Use C++11 nullptr

235 files changed, 1167 insertions, 1214 deletions

diff --git a/.clang-tidy b/.clang-tidy
index a9d121a..5171207 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -24,7 +24,4 @@ readability-*,\
 -readability-simplify-boolean-expr,\
 "
 HeaderFilterRegex: 'Source/cm[^/]*\.(h|hxx|cxx)$'
-CheckOptions:
-  - key:    modernize-use-nullptr.NullMacros
-    value:  'CM_NULLPTR'
 ...
diff --git a/Source/CPack/IFW/cmCPackIFWCommon.cxx b/Source/CPack/IFW/cmCPackIFWCommon.cxx
index e8f05bd..1e72641 100644
--- a/Source/CPack/IFW/cmCPackIFWCommon.cxx
+++ b/Source/CPack/IFW/cmCPackIFWCommon.cxx
@@ -15,14 +15,14 @@
 #include <vector>
 
 cmCPackIFWCommon::cmCPackIFWCommon()
-  : Generator(CM_NULLPTR)
+  : Generator(nullptr)
 {
 }
 
 const char* cmCPackIFWCommon::GetOption(const std::string& op) const
 {
   return this->Generator ? this->Generator->cmCPackGenerator::GetOption(op)
-                         : CM_NULLPTR;
+                         : nullptr;
 }
 
 bool cmCPackIFWCommon::IsOn(const std::string& op) const
diff --git a/Source/CPack/IFW/cmCPackIFWGenerator.cxx b/Source/CPack/IFW/cmCPackIFWGenerator.cxx
index 6861623..a1df32c 100644
--- a/Source/CPack/IFW/cmCPackIFWGenerator.cxx
+++ b/Source/CPack/IFW/cmCPackIFWGenerator.cxx
@@ -73,7 +73,7 @@ int cmCPackIFWGenerator::PackageFiles()
     int retVal = 1;
     cmCPackIFWLogger(OUTPUT, "- Generate repository" << std::endl);
     bool res = cmSystemTools::RunSingleCommand(ifwCmd.c_str(), &output,
-                                               &output, &retVal, CM_NULLPTR,
+                                               &output, &retVal, nullptr,
                                                this->GeneratorVerbose, 0);
     if (!res || retVal) {
       cmGeneratedFileStream ofs(ifwTmpFile.c_str());
@@ -171,7 +171,7 @@ int cmCPackIFWGenerator::PackageFiles()
     int retVal = 1;
     cmCPackIFWLogger(OUTPUT, "- Generate package" << std::endl);
     bool res = cmSystemTools::RunSingleCommand(ifwCmd.c_str(), &output,
-                                               &output, &retVal, CM_NULLPTR,
+                                               &output, &retVal, nullptr,
                                                this->GeneratorVerbose, 0);
     if (!res || retVal) {
       cmGeneratedFileStream ofs(ifwTmpFile.c_str());
@@ -534,7 +534,7 @@ cmCPackIFWPackage* cmCPackIFWGenerator::GetGroupPackage(
 {
   std::map<cmCPackComponentGroup*, cmCPackIFWPackage*>::const_iterator pit =
     this->GroupPackages.find(group);
-  return pit != this->GroupPackages.end() ? pit->second : CM_NULLPTR;
+  return pit != this->GroupPackages.end() ? pit->second : nullptr;
 }
 
 cmCPackIFWPackage* cmCPackIFWGenerator::GetComponentPackage(
@@ -542,7 +542,7 @@ cmCPackIFWPackage* cmCPackIFWGenerator::GetComponentPackage(
 {
   std::map<cmCPackComponent*, cmCPackIFWPackage*>::const_iterator pit =
     this->ComponentPackages.find(component);
-  return pit != this->ComponentPackages.end() ? pit->second : CM_NULLPTR;
+  return pit != this->ComponentPackages.end() ? pit->second : nullptr;
 }
 
 cmCPackIFWRepository* cmCPackIFWGenerator::GetRepository(
@@ -564,7 +564,7 @@ cmCPackIFWRepository* cmCPackIFWGenerator::GetRepository(
     }
   } else {
     this->Repositories.erase(repositoryName);
-    repository = CM_NULLPTR;
+    repository = nullptr;
     cmCPackIFWLogger(WARNING, "Invalid repository \""
                        << repositoryName << "\""
                        << " configuration. Repository will be skipped."
diff --git a/Source/CPack/IFW/cmCPackIFWPackage.cxx b/Source/CPack/IFW/cmCPackIFWPackage.cxx
index c5311c3..8461309 100644
--- a/Source/CPack/IFW/cmCPackIFWPackage.cxx
+++ b/Source/CPack/IFW/cmCPackIFWPackage.cxx
@@ -92,7 +92,7 @@ std::string cmCPackIFWPackage::DependenceStruct::NameWithCompare() const
 
 //------------------------------------------------------ cmCPackIFWPackage ---
 cmCPackIFWPackage::cmCPackIFWPackage()
-  : Installer(CM_NULLPTR)
+  : Installer(nullptr)
 {
 }
 
diff --git a/Source/CPack/WiX/cmWIXPatchParser.cxx b/Source/CPack/WiX/cmWIXPatchParser.cxx
index 0dcc74a..b050b85 100644
--- a/Source/CPack/WiX/cmWIXPatchParser.cxx
+++ b/Source/CPack/WiX/cmWIXPatchParser.cxx
@@ -72,7 +72,7 @@ void cmWIXPatchParser::StartElement(const std::string& name, const char** atts)
 
 void cmWIXPatchParser::StartFragment(const char** attributes)
 {
-  cmWIXPatchElement* new_element = CM_NULLPTR;
+  cmWIXPatchElement* new_element = nullptr;
   /* find the id of for fragment */
   for (size_t i = 0; attributes[i]; i += 2) {
     const std::string key = attributes[i];
diff --git a/Source/CPack/cmCPackArchiveGenerator.cxx b/Source/CPack/cmCPackArchiveGenerator.cxx
index 575c949..1e45b48 100644
--- a/Source/CPack/cmCPackArchiveGenerator.cxx
+++ b/Source/CPack/cmCPackArchiveGenerator.cxx
@@ -79,7 +79,7 @@ int cmCPackArchiveGenerator::addOneComponentToArchive(
        ++fileIt) {
     std::string rp = filePrefix + *fileIt;
     cmCPackLogger(cmCPackLog::LOG_DEBUG, "Adding file: " << rp << std::endl);
-    archive.Add(rp, 0, CM_NULLPTR, false);
+    archive.Add(rp, 0, nullptr, false);
     if (!archive) {
       cmCPackLogger(cmCPackLog::LOG_ERROR, "ERROR while packaging files: "
                       << archive.GetError() << std::endl);
@@ -146,7 +146,7 @@ int cmCPackArchiveGenerator::PackageComponents(bool ignoreGroup)
     for (compIt = this->Components.begin(); compIt != this->Components.end();
          ++compIt) {
       // Does the component belong to a group?
-      if (compIt->second.Group == CM_NULLPTR) {
+      if (compIt->second.Group == nullptr) {
         cmCPackLogger(
           cmCPackLog::LOG_VERBOSE, "Component <"
             << compIt->second.Name
@@ -255,7 +255,7 @@ int cmCPackArchiveGenerator::PackageFiles()
     // Get the relative path to the file
     std::string rp =
       cmSystemTools::RelativePath(toplevel.c_str(), fileIt->c_str());
-    archive.Add(rp, 0, CM_NULLPTR, false);
+    archive.Add(rp, 0, nullptr, false);
     if (!archive) {
       cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem while adding file< "
                       << *fileIt << "> to archive <" << packageFileNames[0]
diff --git a/Source/CPack/cmCPackComponentGroup.h b/Source/CPack/cmCPackComponentGroup.h
index 26d69ba..96c9bca 100644
--- a/Source/CPack/cmCPackComponentGroup.h
+++ b/Source/CPack/cmCPackComponentGroup.h
@@ -36,7 +36,7 @@ class cmCPackComponent
 {
 public:
   cmCPackComponent()
-    : Group(CM_NULLPTR)
+    : Group(nullptr)
     , IsRequired(true)
     , IsHidden(false)
     , IsDisabledByDefault(false)
@@ -114,7 +114,7 @@ class cmCPackComponentGroup
 {
 public:
   cmCPackComponentGroup()
-    : ParentGroup(CM_NULLPTR)
+    : ParentGroup(nullptr)
   {
   }
 
diff --git a/Source/CPack/cmCPackDebGenerator.cxx b/Source/CPack/cmCPackDebGenerator.cxx
index 0705460..01306e2 100644
--- a/Source/CPack/cmCPackDebGenerator.cxx
+++ b/Source/CPack/cmCPackDebGenerator.cxx
@@ -129,7 +129,7 @@ int cmCPackDebGenerator::PackageComponents(bool ignoreGroup)
     for (compIt = this->Components.begin(); compIt != this->Components.end();
          ++compIt) {
       // Does the component belong to a group?
-      if (compIt->second.Group == CM_NULLPTR) {
+      if (compIt->second.Group == nullptr) {
         cmCPackLogger(
           cmCPackLog::LOG_VERBOSE, "Component <"
             << compIt->second.Name
@@ -713,7 +713,7 @@ std::string cmCPackDebGenerator::GetComponentInstallDirNameSuffix(
   // the current COMPONENT belongs to.
   std::string groupVar =
     "CPACK_COMPONENT_" + cmSystemTools::UpperCase(componentName) + "_GROUP";
-  if (CM_NULLPTR != GetOption(groupVar)) {
+  if (nullptr != GetOption(groupVar)) {
     return std::string(GetOption(groupVar));
   }
   return componentName;
@@ -928,18 +928,18 @@ static int ar_append(const char* archive,
 {
   int eval = 0;
   FILE* aFile = cmSystemTools::Fopen(archive, "wb+");
-  if (aFile != CM_NULLPTR) {
+  if (aFile != nullptr) {
     fwrite(ARMAG, SARMAG, 1, aFile);
     if (fseek(aFile, 0, SEEK_END) != -1) {
       CF cf;
       struct stat sb;
       /* Read from disk, write to an archive; pad on write. */
-      SETCF(CM_NULLPTR, CM_NULLPTR, aFile, archive, WPAD);
+      SETCF(nullptr, nullptr, aFile, archive, WPAD);
       for (std::vector<std::string>::const_iterator fileIt = files.begin();
            fileIt != files.end(); ++fileIt) {
         const char* filename = fileIt->c_str();
         FILE* file = cmSystemTools::Fopen(filename, "rb");
-        if (file == CM_NULLPTR) {
+        if (file == nullptr) {
           eval = -1;
           continue;
         }
diff --git a/Source/CPack/cmCPackGenerator.cxx b/Source/CPack/cmCPackGenerator.cxx
index d8e2753..b65eb64 100644
--- a/Source/CPack/cmCPackGenerator.cxx
+++ b/Source/CPack/cmCPackGenerator.cxx
@@ -28,14 +28,14 @@
 cmCPackGenerator::cmCPackGenerator()
 {
   this->GeneratorVerbose = cmSystemTools::OUTPUT_NONE;
-  this->MakefileMap = CM_NULLPTR;
-  this->Logger = CM_NULLPTR;
+  this->MakefileMap = nullptr;
+  this->Logger = nullptr;
   this->componentPackageMethod = ONE_PACKAGE_PER_GROUP;
 }
 
 cmCPackGenerator::~cmCPackGenerator()
 {
-  this->MakefileMap = CM_NULLPTR;
+  this->MakefileMap = nullptr;
 }
 
 void cmCPackGeneratorProgress(const char* msg, float prog, void* ptr)
@@ -156,7 +156,7 @@ int cmCPackGenerator::PrepareNames()
   }
   const char* algoSignature = this->GetOption("CPACK_PACKAGE_CHECKSUM");
   if (algoSignature) {
-    if (cmCryptoHash::New(algoSignature).get() == CM_NULLPTR) {
+    if (cmCryptoHash::New(algoSignature).get() == nullptr) {
       cmCPackLogger(cmCPackLog::LOG_ERROR, "Cannot recognize algorithm: "
                       << algoSignature << std::endl);
       return 0;
@@ -256,7 +256,7 @@ int cmCPackGenerator::InstallProjectViaInstallCommands(
       int retVal = 1;
       bool resB =
         cmSystemTools::RunSingleCommand(it->c_str(), &output, &output, &retVal,
-                                        CM_NULLPTR, this->GeneratorVerbose, 0);
+                                        nullptr, this->GeneratorVerbose, 0);
       if (!resB || retVal) {
         std::string tmpFile = this->GetOption("CPACK_TOPLEVEL_DIRECTORY");
         tmpFile += "/InstallOutput.log";
@@ -820,8 +820,7 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
           }
         }
 
-        if (CM_NULLPTR !=
-            mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES")) {
+        if (nullptr != mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES")) {
           if (!absoluteDestFiles.empty()) {
             absoluteDestFiles += ";";
           }
@@ -835,7 +834,7 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
             std::string absoluteDestFileComponent =
               std::string("CPACK_ABSOLUTE_DESTINATION_FILES") + "_" +
               GetComponentInstallDirNameSuffix(installComponent);
-            if (CM_NULLPTR != this->GetOption(absoluteDestFileComponent)) {
+            if (nullptr != this->GetOption(absoluteDestFileComponent)) {
               std::string absoluteDestFilesListComponent =
                 this->GetOption(absoluteDestFileComponent);
               absoluteDestFilesListComponent += ";";
@@ -1016,7 +1015,7 @@ int cmCPackGenerator::DoPackage()
                     << packageFileName << " generated." << std::endl);
 
     /* Generate checksum file */
-    if (crypto.get() != CM_NULLPTR) {
+    if (crypto.get() != nullptr) {
       std::string hashFile(this->GetOption("CPACK_OUTPUT_FILE_PREFIX"));
       hashFile +=
         "/" + filename.substr(0, filename.rfind(this->GetOutputExtension()));
@@ -1225,7 +1224,7 @@ int cmCPackGenerator::PrepareGroupingKind()
   std::string groupingType;
 
   // Second way to specify grouping
-  if (CM_NULLPTR != this->GetOption("CPACK_COMPONENTS_GROUPING")) {
+  if (nullptr != this->GetOption("CPACK_COMPONENTS_GROUPING")) {
     groupingType = this->GetOption("CPACK_COMPONENTS_GROUPING");
   }
 
@@ -1407,7 +1406,7 @@ cmCPackComponent* cmCPackGenerator::GetComponent(
       component->Group = GetComponentGroup(projectName, groupName);
       component->Group->Components.push_back(component);
     } else {
-      component->Group = CM_NULLPTR;
+      component->Group = nullptr;
     }
 
     const char* description = this->GetOption(macroPrefix + "_DESCRIPTION");
@@ -1475,7 +1474,7 @@ cmCPackComponentGroup* cmCPackGenerator::GetComponentGroup(
       group->ParentGroup = GetComponentGroup(projectName, parentGroupName);
       group->ParentGroup->Subgroups.push_back(group);
     } else {
-      group->ParentGroup = CM_NULLPTR;
+      group->ParentGroup = nullptr;
     }
   }
   return group;
diff --git a/Source/CPack/cmCPackGenerator.h b/Source/CPack/cmCPackGenerator.h
index 45777fa..ed77c0c 100644
--- a/Source/CPack/cmCPackGenerator.h
+++ b/Source/CPack/cmCPackGenerator.h
@@ -105,7 +105,7 @@ protected:
   cmInstalledFile const* GetInstalledFile(std::string const& name) const;
 
   virtual const char* GetOutputExtension() { return ".cpack"; }
-  virtual const char* GetOutputPostfix() { return CM_NULLPTR; }
+  virtual const char* GetOutputPostfix() { return nullptr; }
 
   /**
    * Prepare requested grouping kind from CPACK_xxx vars
diff --git a/Source/CPack/cmCPackGeneratorFactory.cxx b/Source/CPack/cmCPackGeneratorFactory.cxx
index 834913d..1036037 100644
--- a/Source/CPack/cmCPackGeneratorFactory.cxx
+++ b/Source/CPack/cmCPackGeneratorFactory.cxx
@@ -153,7 +153,7 @@ cmCPackGenerator* cmCPackGeneratorFactory::NewGenerator(
 {
   cmCPackGenerator* gen = this->NewGeneratorInternal(name);
   if (!gen) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   this->Generators.push_back(gen);
   gen->SetLogger(this->Logger);
@@ -166,7 +166,7 @@ cmCPackGenerator* cmCPackGeneratorFactory::NewGeneratorInternal(
   cmCPackGeneratorFactory::t_GeneratorCreatorsMap::iterator it =
     this->GeneratorCreators.find(name);
   if (it == this->GeneratorCreators.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return (it->second)();
 }
diff --git a/Source/CPack/cmCPackLog.cxx b/Source/CPack/cmCPackLog.cxx
index 5c71239..5da889d 100644
--- a/Source/CPack/cmCPackLog.cxx
+++ b/Source/CPack/cmCPackLog.cxx
@@ -19,13 +19,13 @@ cmCPackLog::cmCPackLog()
   this->DefaultOutput = &std::cout;
   this->DefaultError = &std::cerr;
 
-  this->LogOutput = CM_NULLPTR;
+  this->LogOutput = nullptr;
   this->LogOutputCleanup = false;
 }
 
 cmCPackLog::~cmCPackLog()
 {
-  this->SetLogOutputStream(CM_NULLPTR);
+  this->SetLogOutputStream(nullptr);
 }
 
 void cmCPackLog::SetLogOutputStream(std::ostream* os)
@@ -39,13 +39,13 @@ void cmCPackLog::SetLogOutputStream(std::ostream* os)
 
 bool cmCPackLog::SetLogOutputFile(const char* fname)
 {
-  cmGeneratedFileStream* cg = CM_NULLPTR;
+  cmGeneratedFileStream* cg = nullptr;
   if (fname) {
     cg = new cmGeneratedFileStream(fname);
   }
   if (cg && !*cg) {
     delete cg;
-    cg = CM_NULLPTR;
+    cg = nullptr;
   }
   this->SetLogOutputStream(cg);
   if (!cg) {
diff --git a/Source/CPack/cmCPackNSISGenerator.cxx b/Source/CPack/cmCPackNSISGenerator.cxx
index 9697a38..d04ea13 100644
--- a/Source/CPack/cmCPackNSISGenerator.cxx
+++ b/Source/CPack/cmCPackNSISGenerator.cxx
@@ -222,7 +222,7 @@ int cmCPackNSISGenerator::PackageFiles()
     std::map<std::string, cmCPackComponentGroup>::iterator groupIt;
     for (groupIt = this->ComponentGroups.begin();
          groupIt != this->ComponentGroups.end(); ++groupIt) {
-      if (groupIt->second.ParentGroup == CM_NULLPTR) {
+      if (groupIt->second.ParentGroup == nullptr) {
         componentCode +=
           this->CreateComponentGroupDescription(&groupIt->second, macrosOut);
       }
@@ -313,7 +313,7 @@ int cmCPackNSISGenerator::PackageFiles()
   int retVal = 1;
   bool res =
     cmSystemTools::RunSingleCommand(nsisCmd.c_str(), &output, &output, &retVal,
-                                    CM_NULLPTR, this->GeneratorVerbose, 0);
+                                    nullptr, this->GeneratorVerbose, 0);
   if (!res || retVal) {
     cmGeneratedFileStream ofs(tmpFile.c_str());
     ofs << "# Run command: " << nsisCmd << std::endl
@@ -337,7 +337,7 @@ int cmCPackNSISGenerator::InitializeInternal()
       "NSIS Generator cannot work with CPACK_INCLUDE_TOPLEVEL_DIRECTORY set. "
       "This option will be reset to 0 (for this generator only)."
         << std::endl);
-    this->SetOption("CPACK_INCLUDE_TOPLEVEL_DIRECTORY", CM_NULLPTR);
+    this->SetOption("CPACK_INCLUDE_TOPLEVEL_DIRECTORY", nullptr);
   }
 
   cmCPackLogger(cmCPackLog::LOG_DEBUG, "cmCPackNSISGenerator::Initialize()"
@@ -412,7 +412,7 @@ int cmCPackNSISGenerator::InitializeInternal()
   int retVal = 1;
   bool resS =
     cmSystemTools::RunSingleCommand(nsisCmd.c_str(), &output, &output, &retVal,
-                                    CM_NULLPTR, this->GeneratorVerbose, 0);
+                                    nullptr, this->GeneratorVerbose, 0);
   cmsys::RegularExpression versionRex("v([0-9]+.[0-9]+)");
   cmsys::RegularExpression versionRexCVS("v(.*)\\.cvs");
   if (!resS || retVal ||
diff --git a/Source/CPack/cmCPackRPMGenerator.cxx b/Source/CPack/cmCPackRPMGenerator.cxx
index 8ec03c2..e40b74d 100644
--- a/Source/CPack/cmCPackRPMGenerator.cxx
+++ b/Source/CPack/cmCPackRPMGenerator.cxx
@@ -148,7 +148,7 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
         for (compIt = this->Components.begin();
              compIt != this->Components.end(); ++compIt) {
           // Does the component belong to a group?
-          if (compIt->second.Group == CM_NULLPTR) {
+          if (compIt->second.Group == nullptr) {
             std::string component(compIt->first);
             std::transform(component.begin(), component.end(),
                            component.begin(), ::toupper);
@@ -214,7 +214,7 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
       for (compIt = this->Components.begin(); compIt != this->Components.end();
            ++compIt) {
         // Does the component belong to a group?
-        if (compIt->second.Group == CM_NULLPTR) {
+        if (compIt->second.Group == nullptr) {
           std::string component(compIt->first);
           std::transform(component.begin(), component.end(), component.begin(),
                          ::toupper);
@@ -299,7 +299,7 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
       for (compIt = this->Components.begin(); compIt != this->Components.end();
            ++compIt) {
         // Does the component belong to a group?
-        if (compIt->second.Group == CM_NULLPTR) {
+        if (compIt->second.Group == nullptr) {
           cmCPackLogger(
             cmCPackLog::LOG_VERBOSE, "Component <"
               << compIt->second.Name
@@ -430,7 +430,7 @@ std::string cmCPackRPMGenerator::GetComponentInstallDirNameSuffix(
   // the current COMPONENT belongs to.
   std::string groupVar =
     "CPACK_COMPONENT_" + cmSystemTools::UpperCase(componentName) + "_GROUP";
-  if (CM_NULLPTR != GetOption(groupVar)) {
+  if (nullptr != GetOption(groupVar)) {
     return std::string(GetOption(groupVar));
   }
   return componentName;
diff --git a/Source/CPack/cpack.cxx b/Source/CPack/cpack.cxx
index a44bc3d..cfa5c26 100644
--- a/Source/CPack/cpack.cxx
+++ b/Source/CPack/cpack.cxx
@@ -29,13 +29,13 @@
 #include "cmake.h"
 
 static const char* cmDocumentationName[][2] = {
-  { CM_NULLPTR, "  cpack - Packaging driver provided by CMake." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cpack - Packaging driver provided by CMake." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsage[][2] = {
-  { CM_NULLPTR, "  cpack -G <generator> [options]" },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cpack -G <generator> [options]" },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationOptions[][2] = {
@@ -49,7 +49,7 @@ static const char* cmDocumentationOptions[][2] = {
   { "-R <package version>", "override/define CPACK_PACKAGE_VERSION" },
   { "-B <package directory>", "override/define CPACK_PACKAGE_DIRECTORY" },
   { "--vendor <vendor name>", "override/define CPACK_PACKAGE_VENDOR" },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, nullptr }
 };
 
 int cpackUnknownArgument(const char* /*unused*/, void* /*unused*/)
@@ -208,7 +208,7 @@ int main(int argc, char const* const* argv)
 
   cmCPackGeneratorFactory generators;
   generators.SetLogger(&log);
-  cmCPackGenerator* cpackGenerator = CM_NULLPTR;
+  cmCPackGenerator* cpackGenerator = nullptr;
 
   cmDocumentation doc;
   doc.addCPackStandardDocSections();
diff --git a/Source/CTest/cmCTestBZR.cxx b/Source/CTest/cmCTestBZR.cxx
index 94f39c2..4c9c5ca 100644
--- a/Source/CTest/cmCTestBZR.cxx
+++ b/Source/CTest/cmCTestBZR.cxx
@@ -136,13 +136,13 @@ std::string cmCTestBZR::LoadInfo()
 {
   // Run "bzr info" to get the repository info from the work tree.
   const char* bzr = this->CommandLineTool.c_str();
-  const char* bzr_info[] = { bzr, "info", CM_NULLPTR };
+  const char* bzr_info[] = { bzr, "info", nullptr };
   InfoParser iout(this, "info-out> ");
   OutputLogger ierr(this->Log, "info-err> ");
   this->RunChild(bzr_info, &iout, &ierr);
 
   // Run "bzr revno" to get the repository revision number from the work tree.
-  const char* bzr_revno[] = { bzr, "revno", CM_NULLPTR };
+  const char* bzr_revno[] = { bzr, "revno", nullptr };
   std::string rev;
   RevnoParser rout(this, "revno-out> ", rev);
   OutputLogger rerr(this->Log, "revno-err> ");
@@ -190,7 +190,7 @@ public:
     if (res) {
       XML_SetUnknownEncodingHandler(static_cast<XML_Parser>(this->Parser),
                                     cmBZRXMLParserUnknownEncodingHandler,
-                                    CM_NULLPTR);
+                                    nullptr);
     }
     return res;
   }
@@ -380,7 +380,7 @@ bool cmCTestBZR::UpdateImpl()
 
   bzr_update.push_back(this->URL.c_str());
 
-  bzr_update.push_back(CM_NULLPTR);
+  bzr_update.push_back(nullptr);
 
   // For some reason bzr uses stderr to display the update status.
   OutputLogger out(this->Log, "pull-out> ");
@@ -408,8 +408,7 @@ bool cmCTestBZR::LoadRevisions()
   // Run "bzr log" to get all global revisions of interest.
   const char* bzr = this->CommandLineTool.c_str();
   const char* bzr_log[] = {
-    bzr,       "log", "-v", "-r", revs.c_str(), "--xml", this->URL.c_str(),
-    CM_NULLPTR
+    bzr, "log", "-v", "-r", revs.c_str(), "--xml", this->URL.c_str(), nullptr
   };
   {
     LogParser out(this, "log-out> ");
@@ -467,7 +466,7 @@ bool cmCTestBZR::LoadModifications()
 {
   // Run "bzr status" which reports local modifications.
   const char* bzr = this->CommandLineTool.c_str();
-  const char* bzr_status[] = { bzr, "status", "-SV", CM_NULLPTR };
+  const char* bzr_status[] = { bzr, "status", "-SV", nullptr };
   StatusParser out(this, "status-out> ");
   OutputLogger err(this->Log, "status-err> ");
   this->RunChild(bzr_status, &out, &err);
diff --git a/Source/CTest/cmCTestBuildAndTestHandler.cxx b/Source/CTest/cmCTestBuildAndTestHandler.cxx
index cc29071..466fc78 100644
--- a/Source/CTest/cmCTestBuildAndTestHandler.cxx
+++ b/Source/CTest/cmCTestBuildAndTestHandler.cxx
@@ -65,7 +65,7 @@ int cmCTestBuildAndTestHandler::RunCMake(std::string* outstring,
     args.push_back(toolset);
   }
 
-  const char* config = CM_NULLPTR;
+  const char* config = nullptr;
   if (!this->CTest->GetConfigType().empty()) {
     config = this->CTest->GetConfigType().c_str();
   }
@@ -148,10 +148,10 @@ public:
   }
   ~cmCTestBuildAndTestCaptureRAII()
   {
-    this->CM.SetProgressCallback(CM_NULLPTR, CM_NULLPTR);
-    cmSystemTools::SetStderrCallback(CM_NULLPTR, CM_NULLPTR);
-    cmSystemTools::SetStdoutCallback(CM_NULLPTR, CM_NULLPTR);
-    cmSystemTools::SetMessageCallback(CM_NULLPTR, CM_NULLPTR);
+    this->CM.SetProgressCallback(nullptr, nullptr);
+    cmSystemTools::SetStderrCallback(nullptr, nullptr);
+    cmSystemTools::SetStdoutCallback(nullptr, nullptr);
+    cmSystemTools::SetMessageCallback(nullptr, nullptr);
   }
 };
 
@@ -236,7 +236,7 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
       }
     }
     std::string output;
-    const char* config = CM_NULLPTR;
+    const char* config = nullptr;
     if (!this->CTest->GetConfigType().empty()) {
       config = this->CTest->GetConfigType().c_str();
     }
@@ -308,7 +308,7 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
   for (size_t k = 0; k < this->TestCommandArgs.size(); ++k) {
     testCommand.push_back(this->TestCommandArgs[k].c_str());
   }
-  testCommand.push_back(CM_NULLPTR);
+  testCommand.push_back(nullptr);
   std::string outs;
   int retval = 0;
   // run the test from the this->BuildRunDir if set
@@ -334,8 +334,8 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
     }
   }
 
-  int runTestRes = this->CTest->RunTest(testCommand, &outs, &retval,
-                                        CM_NULLPTR, remainingTime, CM_NULLPTR);
+  int runTestRes = this->CTest->RunTest(testCommand, &outs, &retval, nullptr,
+                                        remainingTime, nullptr);
 
   if (runTestRes != cmsysProcess_State_Exited || retval != 0) {
     out << "Test command failed: " << testCommand[0] << "\n";
diff --git a/Source/CTest/cmCTestBuildCommand.cxx b/Source/CTest/cmCTestBuildCommand.cxx
index 64ef8de..074f085 100644
--- a/Source/CTest/cmCTestBuildCommand.cxx
+++ b/Source/CTest/cmCTestBuildCommand.cxx
@@ -17,14 +17,14 @@ class cmExecutionStatus;
 
 cmCTestBuildCommand::cmCTestBuildCommand()
 {
-  this->GlobalGenerator = CM_NULLPTR;
+  this->GlobalGenerator = nullptr;
   this->Arguments[ctb_NUMBER_ERRORS] = "NUMBER_ERRORS";
   this->Arguments[ctb_NUMBER_WARNINGS] = "NUMBER_WARNINGS";
   this->Arguments[ctb_TARGET] = "TARGET";
   this->Arguments[ctb_CONFIGURATION] = "CONFIGURATION";
   this->Arguments[ctb_FLAGS] = "FLAGS";
   this->Arguments[ctb_PROJECT_NAME] = "PROJECT_NAME";
-  this->Arguments[ctb_LAST] = CM_NULLPTR;
+  this->Arguments[ctb_LAST] = nullptr;
   this->Last = ctb_LAST;
 }
 
@@ -32,7 +32,7 @@ cmCTestBuildCommand::~cmCTestBuildCommand()
 {
   if (this->GlobalGenerator) {
     delete this->GlobalGenerator;
-    this->GlobalGenerator = CM_NULLPTR;
+    this->GlobalGenerator = nullptr;
   }
 }
 
@@ -41,7 +41,7 @@ cmCTestGenericHandler* cmCTestBuildCommand::InitializeHandler()
   cmCTestGenericHandler* handler = this->CTest->GetInitializedHandler("build");
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate build handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
   this->Handler = (cmCTestBuildHandler*)handler;
 
@@ -89,7 +89,7 @@ cmCTestGenericHandler* cmCTestBuildCommand::InitializeHandler()
       if (this->GlobalGenerator) {
         if (this->GlobalGenerator->GetName() != cmakeGeneratorName) {
           delete this->GlobalGenerator;
-          this->GlobalGenerator = CM_NULLPTR;
+          this->GlobalGenerator = nullptr;
         }
       }
       if (!this->GlobalGenerator) {
@@ -102,11 +102,11 @@ cmCTestGenericHandler* cmCTestBuildCommand::InitializeHandler()
           e += "\"";
           this->Makefile->IssueMessage(cmake::FATAL_ERROR, e);
           cmSystemTools::SetFatalErrorOccured();
-          return CM_NULLPTR;
+          return nullptr;
         }
       }
       if (strlen(cmakeBuildConfiguration) == 0) {
-        const char* config = CM_NULLPTR;
+        const char* config = nullptr;
 #ifdef CMAKE_INTDIR
         config = CMAKE_INTDIR;
 #endif
@@ -143,7 +143,7 @@ cmCTestGenericHandler* cmCTestBuildCommand::InitializeHandler()
         "with a custom command line.";
       /* clang-format on */
       this->SetError(ostr.str());
-      return CM_NULLPTR;
+      return nullptr;
     }
   }
 
diff --git a/Source/CTest/cmCTestBuildHandler.cxx b/Source/CTest/cmCTestBuildHandler.cxx
index f9116e3..3762e13 100644
--- a/Source/CTest/cmCTestBuildHandler.cxx
+++ b/Source/CTest/cmCTestBuildHandler.cxx
@@ -74,7 +74,7 @@ static const char* cmCTestErrorMatches[] = {
   "^The project cannot be built\\.",
   "^\\[ERROR\\]",
   "^Command .* failed with exit code",
-  CM_NULLPTR
+  nullptr
 };
 
 static const char* cmCTestErrorExceptions[] = {
@@ -89,7 +89,7 @@ static const char* cmCTestErrorExceptions[] = {
   ":[ \\t]+Where:",
   "([^ :]+):([0-9]+): Warning",
   "------ Build started: .* ------",
-  CM_NULLPTR
+  nullptr
 };
 
 static const char* cmCTestWarningMatches[] = {
@@ -114,7 +114,7 @@ static const char* cmCTestWarningMatches[] = {
   "cc-[0-9]* CC: REMARK File = .*, Line = [0-9]*",
   "^CMake Warning.*:",
   "^\\[WARNING\\]",
-  CM_NULLPTR
+  nullptr
 };
 
 static const char* cmCTestWarningExceptions[] = {
@@ -134,7 +134,7 @@ static const char* cmCTestWarningExceptions[] = {
   "ld32: WARNING 85: definition of dataKey in",
   "cc: warning 422: Unknown option \"\\+b",
   "_with_warning_C",
-  CM_NULLPTR
+  nullptr
 };
 
 struct cmCTestBuildCompileErrorWarningRex
@@ -152,7 +152,7 @@ static cmCTestBuildCompileErrorWarningRex cmCTestWarningErrorFileLine[] = {
   { "^([a-zA-Z./0-9_+ ~-]+)\\(([0-9]+)\\)", 1, 2 },
   { "\"([a-zA-Z./0-9_+ ~-]+)\", line ([0-9]+)", 1, 2 },
   { "File = ([a-zA-Z./0-9_+ ~-]+), Line = ([0-9]+)", 1, 2 },
-  { CM_NULLPTR, 0, 0 }
+  { nullptr, 0, 0 }
 };
 
 cmCTestBuildHandler::cmCTestBuildHandler()
@@ -504,7 +504,7 @@ public:
   {
   }
   FragmentCompare()
-    : FTC(CM_NULLPTR)
+    : FTC(nullptr)
   {
   }
   bool operator()(std::string const& l, std::string const& r) const
@@ -781,7 +781,7 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
        a != args.end(); ++a) {
     argv.push_back(a->c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, "Run command:",
                      this->Quiet);
@@ -835,7 +835,7 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
 
   // For every chunk of data
   int res;
-  while ((res = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR))) {
+  while ((res = cmsysProcess_WaitForData(cp, &data, &length, nullptr))) {
     // Replace '\0' with '\n', since '\0' does not really make sense. This is
     // for Visual Studio output
     for (int cc = 0; cc < length; ++cc) {
@@ -866,9 +866,9 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
                         &this->BuildProcessingQueue);
   }
 
-  this->ProcessBuffer(CM_NULLPTR, 0, tick, tick_len, ofs,
+  this->ProcessBuffer(nullptr, 0, tick, tick_len, ofs,
                       &this->BuildProcessingQueue);
-  this->ProcessBuffer(CM_NULLPTR, 0, tick, tick_len, ofs,
+  this->ProcessBuffer(nullptr, 0, tick, tick_len, ofs,
                       &this->BuildProcessingErrorQueue);
   cmCTestOptionalLog(this->CTest, HANDLER_PROGRESS_OUTPUT, " Size of output: "
                        << ((this->BuildOutputLogSize + 512) / 1024) << "K"
@@ -876,7 +876,7 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
                      this->Quiet);
 
   // Properly handle output of the build command
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   int result = cmsysProcess_GetState(cp);
 
   if (result == cmsysProcess_State_Exited) {
diff --git a/Source/CTest/cmCTestCVS.cxx b/Source/CTest/cmCTestCVS.cxx
index fad360b..f2a9a85 100644
--- a/Source/CTest/cmCTestCVS.cxx
+++ b/Source/CTest/cmCTestCVS.cxx
@@ -96,7 +96,7 @@ bool cmCTestCVS::UpdateImpl()
        ai != args.end(); ++ai) {
     cvs_update.push_back(ai->c_str());
   }
-  cvs_update.push_back(CM_NULLPTR);
+  cvs_update.push_back(nullptr);
 
   UpdateParser out(this, "up-out> ");
   UpdateParser err(this, "up-err> ");
@@ -221,8 +221,9 @@ void cmCTestCVS::LoadRevisions(std::string const& file, const char* branchFlag,
 
   // Run "cvs log" to get revisions of this file on this branch.
   const char* cvs = this->CommandLineTool.c_str();
-  const char* cvs_log[] = { cvs,        "log",        "-N",
-                            branchFlag, file.c_str(), CM_NULLPTR };
+  const char* cvs_log[] = {
+    cvs, "log", "-N", branchFlag, file.c_str(), nullptr
+  };
 
   LogParser out(this, "log-out> ", revisions);
   OutputLogger err(this->Log, "log-err> ");
diff --git a/Source/CTest/cmCTestCommand.h b/Source/CTest/cmCTestCommand.h
index 6fc237a..8efb419 100644
--- a/Source/CTest/cmCTestCommand.h
+++ b/Source/CTest/cmCTestCommand.h
@@ -20,8 +20,8 @@ class cmCTestCommand : public cmCommand
 public:
   cmCTestCommand()
   {
-    this->CTest = CM_NULLPTR;
-    this->CTestScriptHandler = CM_NULLPTR;
+    this->CTest = nullptr;
+    this->CTestScriptHandler = nullptr;
   }
 
   cmCTest* CTest;
diff --git a/Source/CTest/cmCTestConfigureCommand.cxx b/Source/CTest/cmCTestConfigureCommand.cxx
index aca5bd3..faa75d3 100644
--- a/Source/CTest/cmCTestConfigureCommand.cxx
+++ b/Source/CTest/cmCTestConfigureCommand.cxx
@@ -16,7 +16,7 @@
 cmCTestConfigureCommand::cmCTestConfigureCommand()
 {
   this->Arguments[ctc_OPTIONS] = "OPTIONS";
-  this->Arguments[ctc_LAST] = CM_NULLPTR;
+  this->Arguments[ctc_LAST] = nullptr;
   this->Last = ctc_LAST;
 }
 
@@ -33,7 +33,7 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
       "Build directory not specified. Either use BUILD "
       "argument to CTEST_CONFIGURE command or set CTEST_BINARY_DIRECTORY "
       "variable");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   const char* ctestConfigureCommand =
@@ -53,7 +53,7 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
           "Source directory not specified. Either use SOURCE "
           "argument to CTEST_CONFIGURE command or set CTEST_SOURCE_DIRECTORY "
           "variable");
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       const std::string cmakelists_file = source_dir + "/CMakeLists.txt";
@@ -61,7 +61,7 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
         std::ostringstream e;
         e << "CMakeLists.txt file does not exist [" << cmakelists_file << "]";
         this->SetError(e.str());
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       bool multiConfig = false;
@@ -88,9 +88,8 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
         cmakeConfigureCommand += option;
         cmakeConfigureCommand += "\"";
 
-        if ((CM_NULLPTR != strstr(option.c_str(), "CMAKE_BUILD_TYPE=")) ||
-            (CM_NULLPTR !=
-             strstr(option.c_str(), "CMAKE_BUILD_TYPE:STRING="))) {
+        if ((nullptr != strstr(option.c_str(), "CMAKE_BUILD_TYPE=")) ||
+            (nullptr != strstr(option.c_str(), "CMAKE_BUILD_TYPE:STRING="))) {
           cmakeBuildTypeInOptions = true;
         }
       }
@@ -137,7 +136,7 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
         "Configure command is not specified. If this is a "
         "\"built with CMake\" project, set CTEST_CMAKE_GENERATOR. If not, "
         "set CTEST_CONFIGURE_COMMAND.");
-      return CM_NULLPTR;
+      return nullptr;
     }
   }
 
@@ -152,7 +151,7 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
   if (!handler) {
     this->SetError(
       "internal CTest error. Cannot instantiate configure handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
   handler->SetQuiet(this->Quiet);
   return handler;
diff --git a/Source/CTest/cmCTestCoverageCommand.cxx b/Source/CTest/cmCTestCoverageCommand.cxx
index 535da58..d2003ba 100644
--- a/Source/CTest/cmCTestCoverageCommand.cxx
+++ b/Source/CTest/cmCTestCoverageCommand.cxx
@@ -23,7 +23,7 @@ cmCTestGenericHandler* cmCTestCoverageCommand::InitializeHandler()
     this->CTest->GetInitializedHandler("coverage"));
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate test handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // If a LABELS option was given, select only files with the labels.
diff --git a/Source/CTest/cmCTestCoverageHandler.cxx b/Source/CTest/cmCTestCoverageHandler.cxx
index 877cd24..e3d68c6 100644
--- a/Source/CTest/cmCTestCoverageHandler.cxx
+++ b/Source/CTest/cmCTestCoverageHandler.cxx
@@ -72,7 +72,7 @@ public:
          i != this->CommandLineStrings.end(); ++i) {
       args.push_back(i->c_str());
     }
-    args.push_back(CM_NULLPTR); // null terminate
+    args.push_back(nullptr); // null terminate
     cmsysProcess_SetCommand(this->Process, &*args.begin());
     if (!this->WorkingDirectory.empty()) {
       cmsysProcess_SetWorkingDirectory(this->Process,
@@ -97,7 +97,7 @@ public:
   {
     cmsysProcess_SetPipeFile(this->Process, cmsysProcess_Pipe_STDERR, fname);
   }
-  int WaitForExit(double* timeout = CM_NULLPTR)
+  int WaitForExit(double* timeout = nullptr)
   {
     this->PipeState = cmsysProcess_WaitForExit(this->Process, timeout);
     return this->PipeState;
@@ -1759,7 +1759,7 @@ const char* bullseyeHelp[] = {
   "      condition evaluated true or false, respectively.",
   "    * A k indicates a constant decision or condition.",
   "    * The slash / means this probe is excluded from summary results. ",
-  CM_NULLPTR
+  nullptr
 };
 }
 
@@ -1787,7 +1787,7 @@ int cmCTestCoverageHandler::RunBullseyeCoverageBranch(
   cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                      "run covbr: " << std::endl, this->Quiet);
 
-  if (!this->RunBullseyeCommand(cont, "covbr", CM_NULLPTR, outputFile)) {
+  if (!this->RunBullseyeCommand(cont, "covbr", nullptr, outputFile)) {
     cmCTestLog(this->CTest, ERROR_MESSAGE, "error running covbr for."
                  << "\n");
     return -1;
@@ -1860,7 +1860,7 @@ int cmCTestCoverageHandler::RunBullseyeCoverageBranch(
         covLogXML.StartElement("Report");
         // write the bullseye header
         line = 0;
-        for (int k = 0; bullseyeHelp[k] != CM_NULLPTR; ++k) {
+        for (int k = 0; bullseyeHelp[k] != nullptr; ++k) {
           covLogXML.StartElement("Line");
           covLogXML.Attribute("Number", line);
           covLogXML.Attribute("Count", -1);
diff --git a/Source/CTest/cmCTestCurl.cxx b/Source/CTest/cmCTestCurl.cxx
index b80ea5a..b0b9923 100644
--- a/Source/CTest/cmCTestCurl.cxx
+++ b/Source/CTest/cmCTestCurl.cxx
@@ -145,7 +145,7 @@ bool cmCTestCurl::UploadFile(std::string const& local_file,
   ::curl_easy_setopt(this->Curl, CURLOPT_DEBUGFUNCTION, curlDebugCallback);
   // Set Content-Type to satisfy fussy modsecurity rules.
   struct curl_slist* headers =
-    ::curl_slist_append(CM_NULLPTR, "Content-Type: text/xml");
+    ::curl_slist_append(nullptr, "Content-Type: text/xml");
   // Add any additional headers that the user specified.
   for (std::vector<std::string>::const_iterator h = this->HttpHeaders.begin();
        h != this->HttpHeaders.end(); ++h) {
@@ -212,7 +212,7 @@ bool cmCTestCurl::HttpRequest(std::string const& url,
   ::curl_easy_setopt(this->Curl, CURLOPT_FAILONERROR, 1);
 
   // Add headers if any were specified.
-  struct curl_slist* headers = CM_NULLPTR;
+  struct curl_slist* headers = nullptr;
   if (!this->HttpHeaders.empty()) {
     for (std::vector<std::string>::const_iterator h =
            this->HttpHeaders.begin();
diff --git a/Source/CTest/cmCTestGIT.cxx b/Source/CTest/cmCTestGIT.cxx
index 230aedf..8c27045 100644
--- a/Source/CTest/cmCTestGIT.cxx
+++ b/Source/CTest/cmCTestGIT.cxx
@@ -58,8 +58,8 @@ std::string cmCTestGIT::GetWorkingRevision()
 {
   // Run plumbing "git rev-list" to get work tree revision.
   const char* git = this->CommandLineTool.c_str();
-  const char* git_rev_list[] = { git,    "rev-list", "-n",      "1",
-                                 "HEAD", "--",       CM_NULLPTR };
+  const char* git_rev_list[] = { git,    "rev-list", "-n",   "1",
+                                 "HEAD", "--",       nullptr };
   std::string rev;
   OneLineParser out(this, "rl-out> ", rev);
   OutputLogger err(this->Log, "rl-err> ");
@@ -90,11 +90,11 @@ std::string cmCTestGIT::FindGitDir()
 
   // Run "git rev-parse --git-dir" to locate the real .git directory.
   const char* git = this->CommandLineTool.c_str();
-  char const* git_rev_parse[] = { git, "rev-parse", "--git-dir", CM_NULLPTR };
+  char const* git_rev_parse[] = { git, "rev-parse", "--git-dir", nullptr };
   std::string git_dir_line;
   OneLineParser rev_parse_out(this, "rev-parse-out> ", git_dir_line);
   OutputLogger rev_parse_err(this->Log, "rev-parse-err> ");
-  if (this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err, CM_NULLPTR,
+  if (this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err, nullptr,
                      cmProcessOutput::UTF8)) {
     git_dir = git_dir_line;
   }
@@ -118,7 +118,7 @@ std::string cmCTestGIT::FindGitDir()
                                 0 };
       OneLineParser cygpath_out(this, "cygpath-out> ", git_dir_line);
       OutputLogger cygpath_err(this->Log, "cygpath-err> ");
-      if (this->RunChild(cygpath, &cygpath_out, &cygpath_err, CM_NULLPTR,
+      if (this->RunChild(cygpath, &cygpath_out, &cygpath_err, nullptr,
                          cmProcessOutput::UTF8)) {
         git_dir = git_dir_line;
       }
@@ -134,12 +134,11 @@ std::string cmCTestGIT::FindTopDir()
 
   // Run "git rev-parse --show-cdup" to locate the top of the tree.
   const char* git = this->CommandLineTool.c_str();
-  char const* git_rev_parse[] = { git, "rev-parse", "--show-cdup",
-                                  CM_NULLPTR };
+  char const* git_rev_parse[] = { git, "rev-parse", "--show-cdup", nullptr };
   std::string cdup;
   OneLineParser rev_parse_out(this, "rev-parse-out> ", cdup);
   OutputLogger rev_parse_err(this->Log, "rev-parse-err> ");
-  if (this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err, CM_NULLPTR,
+  if (this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err, nullptr,
                      cmProcessOutput::UTF8) &&
       !cdup.empty()) {
     top_dir += "/";
@@ -170,7 +169,7 @@ bool cmCTestGIT::UpdateByFetchAndReset()
   }
 
   // Sentinel argument.
-  git_fetch.push_back(CM_NULLPTR);
+  git_fetch.push_back(nullptr);
 
   // Fetch upstream refs.
   OutputLogger fetch_out(this->Log, "fetch-out> ");
@@ -205,8 +204,7 @@ bool cmCTestGIT::UpdateByFetchAndReset()
   }
 
   // Reset the local branch to point at that tracked from upstream.
-  char const* git_reset[] = { git, "reset", "--hard", sha1.c_str(),
-                              CM_NULLPTR };
+  char const* git_reset[] = { git, "reset", "--hard", sha1.c_str(), nullptr };
   OutputLogger reset_out(this->Log, "reset-out> ");
   OutputLogger reset_err(this->Log, "reset-err> ");
   return this->RunChild(&git_reset[0], &reset_out, &reset_err);
@@ -221,7 +219,7 @@ bool cmCTestGIT::UpdateByCustom(std::string const& custom)
        i != git_custom_command.end(); ++i) {
     git_custom.push_back(i->c_str());
   }
-  git_custom.push_back(CM_NULLPTR);
+  git_custom.push_back(nullptr);
 
   OutputLogger custom_out(this->Log, "custom-out> ");
   OutputLogger custom_err(this->Log, "custom-err> ");
@@ -250,7 +248,7 @@ bool cmCTestGIT::UpdateImpl()
 
   // Git < 1.6.5 did not support submodule --recursive
   if (this->GetGitVersion() < cmCTestGITVersion(1, 6, 5, 0)) {
-    recursive = CM_NULLPTR;
+    recursive = nullptr;
     // No need to require >= 1.6.5 if there are no submodules.
     if (cmSystemTools::FileExists((top_dir + "/.gitmodules").c_str())) {
       this->Log << "Git < 1.6.5 cannot update submodules recursively\n";
@@ -259,7 +257,7 @@ bool cmCTestGIT::UpdateImpl()
 
   // Git < 1.8.1 did not support sync --recursive
   if (this->GetGitVersion() < cmCTestGITVersion(1, 8, 1, 0)) {
-    sync_recursive = CM_NULLPTR;
+    sync_recursive = nullptr;
     // No need to require >= 1.8.1 if there are no submodules.
     if (cmSystemTools::FileExists((top_dir + "/.gitmodules").c_str())) {
       this->Log << "Git < 1.8.1 cannot synchronize submodules recursively\n";
@@ -274,8 +272,7 @@ bool cmCTestGIT::UpdateImpl()
   std::string init_submodules =
     this->CTest->GetCTestConfiguration("GITInitSubmodules");
   if (cmSystemTools::IsOn(init_submodules.c_str())) {
-    char const* git_submodule_init[] = { git, "submodule", "init",
-                                         CM_NULLPTR };
+    char const* git_submodule_init[] = { git, "submodule", "init", nullptr };
     ret = this->RunChild(git_submodule_init, &submodule_out, &submodule_err,
                          top_dir.c_str());
 
@@ -285,7 +282,7 @@ bool cmCTestGIT::UpdateImpl()
   }
 
   char const* git_submodule_sync[] = { git, "submodule", "sync",
-                                       sync_recursive, CM_NULLPTR };
+                                       sync_recursive, nullptr };
   ret = this->RunChild(git_submodule_sync, &submodule_out, &submodule_err,
                        top_dir.c_str());
 
@@ -294,7 +291,7 @@ bool cmCTestGIT::UpdateImpl()
   }
 
   char const* git_submodule[] = { git, "submodule", "update", recursive,
-                                  CM_NULLPTR };
+                                  nullptr };
   return this->RunChild(git_submodule, &submodule_out, &submodule_err,
                         top_dir.c_str());
 }
@@ -303,7 +300,7 @@ unsigned int cmCTestGIT::GetGitVersion()
 {
   if (!this->CurrentGitVersion) {
     const char* git = this->CommandLineTool.c_str();
-    char const* git_version[] = { git, "--version", CM_NULLPTR };
+    char const* git_version[] = { git, "--version", nullptr };
     std::string version;
     OneLineParser version_out(this, "version-out> ", version);
     OutputLogger version_err(this->Log, "version-err> ");
@@ -615,10 +612,10 @@ bool cmCTestGIT::LoadRevisions()
   std::string range = this->OldRevision + ".." + this->NewRevision;
   const char* git = this->CommandLineTool.c_str();
   const char* git_rev_list[] = { git,           "rev-list", "--reverse",
-                                 range.c_str(), "--",       CM_NULLPTR };
+                                 range.c_str(), "--",       nullptr };
   const char* git_diff_tree[] = {
     git,  "diff-tree",    "--stdin",          "--always", "-z",
-    "-r", "--pretty=raw", "--encoding=utf-8", CM_NULLPTR
+    "-r", "--pretty=raw", "--encoding=utf-8", nullptr
   };
   this->Log << this->ComputeCommandLine(git_rev_list) << " | "
             << this->ComputeCommandLine(git_diff_tree) << "\n";
@@ -645,19 +642,18 @@ bool cmCTestGIT::LoadModifications()
 
   // Use 'git update-index' to refresh the index w.r.t. the work tree.
   const char* git_update_index[] = { git, "update-index", "--refresh",
-                                     CM_NULLPTR };
+                                     nullptr };
   OutputLogger ui_out(this->Log, "ui-out> ");
   OutputLogger ui_err(this->Log, "ui-err> ");
-  this->RunChild(git_update_index, &ui_out, &ui_err, CM_NULLPTR,
+  this->RunChild(git_update_index, &ui_out, &ui_err, nullptr,
                  cmProcessOutput::UTF8);
 
   // Use 'git diff-index' to get modified files.
   const char* git_diff_index[] = { git,    "diff-index", "-z",
-                                   "HEAD", "--",         CM_NULLPTR };
+                                   "HEAD", "--",         nullptr };
   DiffParser out(this, "di-out> ");
   OutputLogger err(this->Log, "di-err> ");
-  this->RunChild(git_diff_index, &out, &err, CM_NULLPTR,
-                 cmProcessOutput::UTF8);
+  this->RunChild(git_diff_index, &out, &err, nullptr, cmProcessOutput::UTF8);
 
   for (std::vector<Change>::const_iterator ci = out.Changes.begin();
        ci != out.Changes.end(); ++ci) {
diff --git a/Source/CTest/cmCTestGenericHandler.cxx b/Source/CTest/cmCTestGenericHandler.cxx
index 19034c0..5729012 100644
--- a/Source/CTest/cmCTestGenericHandler.cxx
+++ b/Source/CTest/cmCTestGenericHandler.cxx
@@ -12,7 +12,7 @@
 cmCTestGenericHandler::cmCTestGenericHandler()
 {
   this->HandlerVerbose = cmSystemTools::OUTPUT_NONE;
-  this->CTest = CM_NULLPTR;
+  this->CTest = nullptr;
   this->SubmitIndex = 0;
   this->AppendXML = false;
   this->Quiet = false;
@@ -70,7 +70,7 @@ const char* cmCTestGenericHandler::GetOption(const std::string& op)
   cmCTestGenericHandler::t_StringToString::iterator remit =
     this->Options.find(op);
   if (remit == this->Options.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return remit->second.c_str();
 }
diff --git a/Source/CTest/cmCTestHG.cxx b/Source/CTest/cmCTestHG.cxx
index 49f9a65..7bf5b67 100644
--- a/Source/CTest/cmCTestHG.cxx
+++ b/Source/CTest/cmCTestHG.cxx
@@ -96,7 +96,7 @@ std::string cmCTestHG::GetWorkingRevision()
 {
   // Run plumbing "hg identify" to get work tree revision.
   const char* hg = this->CommandLineTool.c_str();
-  const char* hg_identify[] = { hg, "identify", "-i", CM_NULLPTR };
+  const char* hg_identify[] = { hg, "identify", "-i", nullptr };
   std::string rev;
   IdentifyParser out(this, "rev-out> ", rev);
   OutputLogger err(this->Log, "rev-err> ");
@@ -126,7 +126,7 @@ bool cmCTestHG::UpdateImpl()
   // Use "hg pull" followed by "hg update" to update the working tree.
   {
     const char* hg = this->CommandLineTool.c_str();
-    const char* hg_pull[] = { hg, "pull", "-v", CM_NULLPTR };
+    const char* hg_pull[] = { hg, "pull", "-v", nullptr };
     OutputLogger out(this->Log, "pull-out> ");
     OutputLogger err(this->Log, "pull-err> ");
     this->RunChild(&hg_pull[0], &out, &err);
@@ -151,7 +151,7 @@ bool cmCTestHG::UpdateImpl()
   }
 
   // Sentinel argument.
-  hg_update.push_back(CM_NULLPTR);
+  hg_update.push_back(nullptr);
 
   OutputLogger out(this->Log, "update-out> ");
   OutputLogger err(this->Log, "update-err> ");
@@ -286,7 +286,7 @@ bool cmCTestHG::LoadRevisions()
                               "</logentry>\n";
   const char* hg_log[] = {
     hg,           "log",         "--removed", "-r", range.c_str(),
-    "--template", hgXMLTemplate, CM_NULLPTR
+    "--template", hgXMLTemplate, nullptr
   };
 
   LogParser out(this, "log-out> ");
@@ -302,7 +302,7 @@ bool cmCTestHG::LoadModifications()
 {
   // Use 'hg status' to get modified files.
   const char* hg = this->CommandLineTool.c_str();
-  const char* hg_status[] = { hg, "status", CM_NULLPTR };
+  const char* hg_status[] = { hg, "status", nullptr };
   StatusParser out(this, "status-out> ");
   OutputLogger err(this->Log, "status-err> ");
   this->RunChild(hg_status, &out, &err);
diff --git a/Source/CTest/cmCTestHandlerCommand.cxx b/Source/CTest/cmCTestHandlerCommand.cxx
index c99e450..9266d1f 100644
--- a/Source/CTest/cmCTestHandlerCommand.cxx
+++ b/Source/CTest/cmCTestHandlerCommand.cxx
@@ -20,7 +20,7 @@ cmCTestHandlerCommand::cmCTestHandlerCommand()
   size_t cc;
   this->Arguments.reserve(INIT_SIZE);
   for (cc = 0; cc < INIT_SIZE; ++cc) {
-    this->Arguments.push_back(CM_NULLPTR);
+    this->Arguments.push_back(nullptr);
   }
   this->Arguments[ct_RETURN_VALUE] = "RETURN_VALUE";
   this->Arguments[ct_CAPTURE_CMAKE_ERROR] = "CAPTURE_CMAKE_ERROR";
@@ -89,7 +89,7 @@ bool cmCTestHandlerCommand::InitialPass(std::vector<std::string> const& args,
   SaveRestoreErrorState errorState;
   // Allocate space for argument values.
   this->Values.clear();
-  this->Values.resize(this->Last, CM_NULLPTR);
+  this->Values.resize(this->Last, nullptr);
 
   // Process input arguments.
   this->ArgumentDoing = ArgumentDoingNone;
diff --git a/Source/CTest/cmCTestLaunch.cxx b/Source/CTest/cmCTestLaunch.cxx
index 9be8696..8d32f2e 100644
--- a/Source/CTest/cmCTestLaunch.cxx
+++ b/Source/CTest/cmCTestLaunch.cxx
@@ -31,7 +31,7 @@
 cmCTestLaunch::cmCTestLaunch(int argc, const char* const* argv)
 {
   this->Passthru = true;
-  this->Process = CM_NULLPTR;
+  this->Process = nullptr;
   this->ExitCode = 1;
   this->CWD = cmSystemTools::GetCurrentWorkingDirectory();
 
@@ -129,7 +129,7 @@ bool cmCTestLaunch::ParseArguments(int argc, const char* const* argv)
     return true;
   }
   this->RealArgC = 0;
-  this->RealArgV = CM_NULLPTR;
+  this->RealArgV = nullptr;
   std::cerr << "No launch/command separator ('--') found!\n";
   return false;
 }
@@ -224,11 +224,11 @@ void cmCTestLaunch::RunChild()
 
   // Record child stdout and stderr if necessary.
   if (!this->Passthru) {
-    char* data = CM_NULLPTR;
+    char* data = nullptr;
     int length = 0;
     cmProcessOutput processOutput;
     std::string strdata;
-    while (int p = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) {
+    while (int p = cmsysProcess_WaitForData(cp, &data, &length, nullptr)) {
       if (p == cmsysProcess_Pipe_STDOUT) {
         processOutput.DecodeText(data, length, strdata, 1);
         fout.write(strdata.c_str(), strdata.size());
@@ -254,7 +254,7 @@ void cmCTestLaunch::RunChild()
   }
 
   // Wait for the real command to finish.
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   this->ExitCode = cmsysProcess_GetExitValue(cp);
 }
 
@@ -396,7 +396,7 @@ void cmCTestLaunch::WriteXMLAction(cmXMLWriter& xml)
   }
 
   // OutputType
-  const char* outputType = CM_NULLPTR;
+  const char* outputType = nullptr;
   if (!this->OptionTargetType.empty()) {
     if (this->OptionTargetType == "EXECUTABLE") {
       outputType = "executable";
diff --git a/Source/CTest/cmCTestMemCheckCommand.cxx b/Source/CTest/cmCTestMemCheckCommand.cxx
index b9cae3b..a5d5995 100644
--- a/Source/CTest/cmCTestMemCheckCommand.cxx
+++ b/Source/CTest/cmCTestMemCheckCommand.cxx
@@ -14,7 +14,7 @@
 cmCTestMemCheckCommand::cmCTestMemCheckCommand()
 {
   this->Arguments[ctm_DEFECT_COUNT] = "DEFECT_COUNT";
-  this->Arguments[ctm_LAST] = CM_NULLPTR;
+  this->Arguments[ctm_LAST] = nullptr;
   this->Last = ctm_LAST;
 }
 
diff --git a/Source/CTest/cmCTestMemCheckHandler.cxx b/Source/CTest/cmCTestMemCheckHandler.cxx
index 6026a2a..848e505 100644
--- a/Source/CTest/cmCTestMemCheckHandler.cxx
+++ b/Source/CTest/cmCTestMemCheckHandler.cxx
@@ -28,7 +28,7 @@ static CatToErrorType cmCTestMemCheckBoundsChecker[] = {
   { "Allocation Conflict", cmCTestMemCheckHandler::FMM },
   { "Bad Pointer Use", cmCTestMemCheckHandler::FMW },
   { "Dangling Pointer", cmCTestMemCheckHandler::FMR },
-  { CM_NULLPTR, 0 }
+  { nullptr, 0 }
 };
 
 static void xmlReportError(int line, const char* msg, void* data)
@@ -58,7 +58,7 @@ public:
     std::ostringstream ostr;
     ostr << name << ":\n";
     int i = 0;
-    for (; atts[i] != CM_NULLPTR; i += 2) {
+    for (; atts[i] != nullptr; i += 2) {
       ostr << "   " << atts[i] << " - " << atts[i + 1] << "\n";
     }
     ostr << "\n";
@@ -69,12 +69,12 @@ public:
   const char* GetAttribute(const char* name, const char** atts)
   {
     int i = 0;
-    for (; atts[i] != CM_NULLPTR; ++i) {
+    for (; atts[i] != nullptr; ++i) {
       if (strcmp(name, atts[i]) == 0) {
         return atts[i + 1];
       }
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
   void ParseError(const char** atts)
   {
@@ -228,9 +228,9 @@ void cmCTestMemCheckHandler::InitializeResultsVectors()
   // define the standard set of errors
   //----------------------------------------------------------------------
   static const char* cmCTestMemCheckResultStrings[] = {
-    "ABR", "ABW", "ABWL", "COR", "EXU", "FFM", "FIM",     "FMM",
-    "FMR", "FMW", "FUM",  "IPR", "IPW", "MAF", "MLK",     "MPK",
-    "NPR", "ODS", "PAR",  "PLK", "UMC", "UMR", CM_NULLPTR
+    "ABR", "ABW", "ABWL", "COR", "EXU", "FFM", "FIM",  "FMM",
+    "FMR", "FMW", "FUM",  "IPR", "IPW", "MAF", "MLK",  "MPK",
+    "NPR", "ODS", "PAR",  "PLK", "UMC", "UMR", nullptr
   };
   static const char* cmCTestMemCheckResultLongStrings[] = {
     "Threading Problem",
@@ -255,10 +255,10 @@ void cmCTestMemCheckHandler::InitializeResultsVectors()
     "PLK",
     "Uninitialized Memory Conditional",
     "Uninitialized Memory Read",
-    CM_NULLPTR
+    nullptr
   };
   this->GlobalResults.clear();
-  for (int i = 0; cmCTestMemCheckResultStrings[i] != CM_NULLPTR; ++i) {
+  for (int i = 0; cmCTestMemCheckResultStrings[i] != nullptr; ++i) {
     this->ResultStrings.push_back(cmCTestMemCheckResultStrings[i]);
     this->ResultStringsLong.push_back(cmCTestMemCheckResultLongStrings[i]);
     this->GlobalResults.push_back(0);
diff --git a/Source/CTest/cmCTestP4.cxx b/Source/CTest/cmCTestP4.cxx
index c802216..ab057ad 100644
--- a/Source/CTest/cmCTestP4.cxx
+++ b/Source/CTest/cmCTestP4.cxx
@@ -155,7 +155,7 @@ cmCTestP4::User cmCTestP4::GetUserData(const std::string& username)
     p4_users.push_back("-m");
     p4_users.push_back("1");
     p4_users.push_back(username.c_str());
-    p4_users.push_back(CM_NULLPTR);
+    p4_users.push_back(nullptr);
 
     UserParser out(this, "users-out> ");
     OutputLogger err(this->Log, "users-err> ");
@@ -350,7 +350,7 @@ std::string cmCTestP4::GetWorkingRevision()
 
   std::string source = this->SourceDirectory + "/...#have";
   p4_identify.push_back(source.c_str());
-  p4_identify.push_back(CM_NULLPTR);
+  p4_identify.push_back(nullptr);
 
   std::string rev;
   IdentifyParser out(this, "p4_changes-out> ", rev);
@@ -411,7 +411,7 @@ bool cmCTestP4::LoadRevisions()
 
   p4_changes.push_back("changes");
   p4_changes.push_back(range.c_str());
-  p4_changes.push_back(CM_NULLPTR);
+  p4_changes.push_back(nullptr);
 
   ChangesParser out(this, "p4_changes-out> ");
   OutputLogger err(this->Log, "p4_changes-err> ");
@@ -431,7 +431,7 @@ bool cmCTestP4::LoadRevisions()
     p4_describe.push_back("describe");
     p4_describe.push_back("-s");
     p4_describe.push_back(i->c_str());
-    p4_describe.push_back(CM_NULLPTR);
+    p4_describe.push_back(nullptr);
 
     DescribeParser outDescribe(this, "p4_describe-out> ");
     OutputLogger errDescribe(this->Log, "p4_describe-err> ");
@@ -451,7 +451,7 @@ bool cmCTestP4::LoadModifications()
   p4_diff.push_back("-dn");
   std::string source = this->SourceDirectory + "/...";
   p4_diff.push_back(source.c_str());
-  p4_diff.push_back(CM_NULLPTR);
+  p4_diff.push_back(nullptr);
 
   DiffParser out(this, "p4_diff-out> ");
   OutputLogger err(this->Log, "p4_diff-err> ");
@@ -469,7 +469,7 @@ bool cmCTestP4::UpdateCustom(const std::string& custom)
        i != p4_custom_command.end(); ++i) {
     p4_custom.push_back(i->c_str());
   }
-  p4_custom.push_back(CM_NULLPTR);
+  p4_custom.push_back(nullptr);
 
   OutputLogger custom_out(this->Log, "p4_customsync-out> ");
   OutputLogger custom_err(this->Log, "p4_customsync-err> ");
@@ -520,7 +520,7 @@ bool cmCTestP4::UpdateImpl()
   }
 
   p4_sync.push_back(source.c_str());
-  p4_sync.push_back(CM_NULLPTR);
+  p4_sync.push_back(nullptr);
 
   OutputLogger out(this->Log, "p4_sync-out> ");
   OutputLogger err(this->Log, "p4_sync-err> ");
diff --git a/Source/CTest/cmCTestRunTest.cxx b/Source/CTest/cmCTestRunTest.cxx
index 9274c01..2c1198f 100644
--- a/Source/CTest/cmCTestRunTest.cxx
+++ b/Source/CTest/cmCTestRunTest.cxx
@@ -25,12 +25,12 @@ cmCTestRunTest::cmCTestRunTest(cmCTestTestHandler* handler)
 {
   this->CTest = handler->CTest;
   this->TestHandler = handler;
-  this->TestProcess = CM_NULLPTR;
+  this->TestProcess = nullptr;
   this->TestResult.ExecutionTime = 0;
   this->TestResult.ReturnValue = 0;
   this->TestResult.Status = cmCTestTestHandler::NOT_RUN;
   this->TestResult.TestCount = 0;
-  this->TestResult.Properties = CM_NULLPTR;
+  this->TestResult.Properties = nullptr;
   this->ProcessOutput = "";
   this->CompressedOutput = "";
   this->CompressionRatio = 2;
@@ -621,7 +621,7 @@ double cmCTestRunTest::ResolveTimeout()
     return timeout;
   }
   struct tm* lctime;
-  time_t current_time = time(CM_NULLPTR);
+  time_t current_time = time(nullptr);
   lctime = gmtime(&current_time);
   int gm_hour = lctime->tm_hour;
   time_t gm_time = mktime(lctime);
diff --git a/Source/CTest/cmCTestSVN.cxx b/Source/CTest/cmCTestSVN.cxx
index f60f78c..36582a2 100644
--- a/Source/CTest/cmCTestSVN.cxx
+++ b/Source/CTest/cmCTestSVN.cxx
@@ -290,7 +290,7 @@ bool cmCTestSVN::RunSVNCommand(std::vector<char const*> const& parameters,
     args.push_back(i->c_str());
   }
 
-  args.push_back(CM_NULLPTR);
+  args.push_back(nullptr);
 
   if (strcmp(parameters[0], "update") == 0) {
     return RunUpdateCommand(&args[0], out, err);
diff --git a/Source/CTest/cmCTestScriptHandler.cxx b/Source/CTest/cmCTestScriptHandler.cxx
index c566c5c..6fd24a5 100644
--- a/Source/CTest/cmCTestScriptHandler.cxx
+++ b/Source/CTest/cmCTestScriptHandler.cxx
@@ -75,9 +75,9 @@ cmCTestScriptHandler::cmCTestScriptHandler()
   this->Backup = false;
   this->EmptyBinDir = false;
   this->EmptyBinDirOnce = false;
-  this->Makefile = CM_NULLPTR;
-  this->CMake = CM_NULLPTR;
-  this->GlobalGenerator = CM_NULLPTR;
+  this->Makefile = nullptr;
+  this->CMake = nullptr;
+  this->GlobalGenerator = nullptr;
 
   this->ScriptStartTime = 0;
 
@@ -114,10 +114,10 @@ void cmCTestScriptHandler::Initialize()
   this->ScriptStartTime = 0;
 
   delete this->Makefile;
-  this->Makefile = CM_NULLPTR;
+  this->Makefile = nullptr;
 
   delete this->GlobalGenerator;
-  this->GlobalGenerator = CM_NULLPTR;
+  this->GlobalGenerator = nullptr;
 
   delete this->CMake;
 }
@@ -193,7 +193,7 @@ int cmCTestScriptHandler::ExecuteScript(const std::string& total_script_arg)
   for (size_t i = 1; i < initArgs.size(); ++i) {
     argv.push_back(initArgs[i].c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   // Now create process object
   cmsysProcess* cp = cmsysProcess_New();
@@ -219,7 +219,7 @@ int cmCTestScriptHandler::ExecuteScript(const std::string& total_script_arg)
   }
 
   // Properly handle output of the build command
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   int result = cmsysProcess_GetState(cp);
   int retVal = 0;
   bool failed = false;
@@ -852,7 +852,7 @@ bool cmCTestScriptHandler::WriteInitialCache(const char* directory,
     return false;
   }
 
-  if (text != CM_NULLPTR) {
+  if (text != nullptr) {
     fout.write(text, strlen(text));
   }
 
diff --git a/Source/CTest/cmCTestStartCommand.cxx b/Source/CTest/cmCTestStartCommand.cxx
index 01a874b..4f0d87b 100644
--- a/Source/CTest/cmCTestStartCommand.cxx
+++ b/Source/CTest/cmCTestStartCommand.cxx
@@ -29,12 +29,12 @@ bool cmCTestStartCommand::InitialPass(std::vector<std::string> const& args,
 
   size_t cnt = 0;
   const char* smodel = args[cnt].c_str();
-  const char* src_dir = CM_NULLPTR;
-  const char* bld_dir = CM_NULLPTR;
+  const char* src_dir = nullptr;
+  const char* bld_dir = nullptr;
 
   cnt++;
 
-  this->CTest->SetSpecificTrack(CM_NULLPTR);
+  this->CTest->SetSpecificTrack(nullptr);
   if (cnt < args.size() - 1) {
     if (args[cnt] == "TRACK") {
       cnt++;
diff --git a/Source/CTest/cmCTestSubmitCommand.cxx b/Source/CTest/cmCTestSubmitCommand.cxx
index 409eb51..1794ca6 100644
--- a/Source/CTest/cmCTestSubmitCommand.cxx
+++ b/Source/CTest/cmCTestSubmitCommand.cxx
@@ -86,7 +86,7 @@ cmCTestGenericHandler* cmCTestSubmitCommand::InitializeHandler()
                          extraFiles.end());
     if (!this->CTest->SubmitExtraFiles(newExtraFiles)) {
       this->SetError("problem submitting extra files.");
-      return CM_NULLPTR;
+      return nullptr;
     }
   }
 
@@ -94,7 +94,7 @@ cmCTestGenericHandler* cmCTestSubmitCommand::InitializeHandler()
     this->CTest->GetInitializedHandler("submit");
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate submit handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // If no FILES or PARTS given, *all* PARTS are submitted by default.
diff --git a/Source/CTest/cmCTestSubmitHandler.cxx b/Source/CTest/cmCTestSubmitHandler.cxx
index 689668d..5c67816 100644
--- a/Source/CTest/cmCTestSubmitHandler.cxx
+++ b/Source/CTest/cmCTestSubmitHandler.cxx
@@ -145,7 +145,7 @@ void cmCTestSubmitHandler::Initialize()
   this->HTTPProxyAuth = "";
   this->FTPProxy = "";
   this->FTPProxyType = 0;
-  this->LogFile = CM_NULLPTR;
+  this->LogFile = nullptr;
   this->Files.clear();
 }
 
@@ -304,7 +304,7 @@ bool cmCTestSubmitHandler::SubmitUsingHTTP(const std::string& localprefix,
   char error_buffer[1024];
   // Set Content-Type to satisfy fussy modsecurity rules.
   struct curl_slist* headers =
-    ::curl_slist_append(CM_NULLPTR, "Content-Type: text/xml");
+    ::curl_slist_append(nullptr, "Content-Type: text/xml");
 
   // Add any additional headers that the user specified.
   for (std::vector<std::string>::const_iterator h = this->HttpHeaders.begin();
@@ -495,10 +495,10 @@ bool cmCTestSubmitHandler::SubmitUsingHTTP(const std::string& localprefix,
       // If curl failed for any reason, or checksum fails, wait and retry
       //
       if (res != CURLE_OK || this->HasErrors) {
-        std::string retryDelay = this->GetOption("RetryDelay") == CM_NULLPTR
+        std::string retryDelay = this->GetOption("RetryDelay") == nullptr
           ? ""
           : this->GetOption("RetryDelay");
-        std::string retryCount = this->GetOption("RetryCount") == CM_NULLPTR
+        std::string retryCount = this->GetOption("RetryCount") == nullptr
           ? ""
           : this->GetOption("RetryCount");
 
@@ -764,7 +764,7 @@ bool cmCTestSubmitHandler::SubmitUsingSCP(const std::string& scp_command,
   argv.push_back(scp_command.c_str()); // Scp command
   argv.push_back(scp_command.c_str()); // Dummy string for file
   argv.push_back(scp_command.c_str()); // Dummy string for remote url
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   cmsysProcess* cp = cmsysProcess_New();
   cmsysProcess_SetOption(cp, cmsysProcess_Option_HideWindow, 1);
@@ -797,7 +797,7 @@ bool cmCTestSubmitHandler::SubmitUsingSCP(const std::string& scp_command,
     cmProcessOutput processOutput;
     std::string strdata;
 
-    while (cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) {
+    while (cmsysProcess_WaitForData(cp, &data, &length, nullptr)) {
       processOutput.DecodeText(data, length, strdata);
       cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                          cmCTestLogWrite(strdata.c_str(), strdata.size()),
@@ -810,7 +810,7 @@ bool cmCTestSubmitHandler::SubmitUsingSCP(const std::string& scp_command,
                          this->Quiet);
     }
 
-    cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+    cmsysProcess_WaitForExit(cp, nullptr);
 
     int result = cmsysProcess_GetState(cp);
 
@@ -1036,10 +1036,10 @@ int cmCTestSubmitHandler::HandleCDashUploadFile(std::string const& file,
   bool internalTest = cmSystemTools::IsOn(this->GetOption("InternalTest"));
 
   // Get RETRY_COUNT and RETRY_DELAY values if they were set.
-  std::string retryDelayString = this->GetOption("RetryDelay") == CM_NULLPTR
+  std::string retryDelayString = this->GetOption("RetryDelay") == nullptr
     ? ""
     : this->GetOption("RetryDelay");
-  std::string retryCountString = this->GetOption("RetryCount") == CM_NULLPTR
+  std::string retryCountString = this->GetOption("RetryCount") == nullptr
     ? ""
     : this->GetOption("RetryCount");
   unsigned long retryDelay = 0;
diff --git a/Source/CTest/cmCTestSubmitHandler.h b/Source/CTest/cmCTestSubmitHandler.h
index 2923f4f..318920e 100644
--- a/Source/CTest/cmCTestSubmitHandler.h
+++ b/Source/CTest/cmCTestSubmitHandler.h
@@ -25,7 +25,7 @@ public:
   typedef cmCTestGenericHandler Superclass;
 
   cmCTestSubmitHandler();
-  ~cmCTestSubmitHandler() CM_OVERRIDE { this->LogFile = CM_NULLPTR; }
+  ~cmCTestSubmitHandler() CM_OVERRIDE { this->LogFile = nullptr; }
 
   /*
    * The main entry point for this class
diff --git a/Source/CTest/cmCTestTestCommand.cxx b/Source/CTest/cmCTestTestCommand.cxx
index 3346d86..febd39e 100644
--- a/Source/CTest/cmCTestTestCommand.cxx
+++ b/Source/CTest/cmCTestTestCommand.cxx
@@ -27,7 +27,7 @@ cmCTestTestCommand::cmCTestTestCommand()
   this->Arguments[ctt_SCHEDULE_RANDOM] = "SCHEDULE_RANDOM";
   this->Arguments[ctt_STOP_TIME] = "STOP_TIME";
   this->Arguments[ctt_TEST_LOAD] = "TEST_LOAD";
-  this->Arguments[ctt_LAST] = CM_NULLPTR;
+  this->Arguments[ctt_LAST] = nullptr;
   this->Last = ctt_LAST;
 }
 
diff --git a/Source/CTest/cmCTestTestHandler.cxx b/Source/CTest/cmCTestTestHandler.cxx
index ef0fac8..91c2fdc 100644
--- a/Source/CTest/cmCTestTestHandler.cxx
+++ b/Source/CTest/cmCTestTestHandler.cxx
@@ -334,7 +334,7 @@ cmCTestTestHandler::cmCTestTestHandler()
 
   this->MemCheck = false;
 
-  this->LogFile = CM_NULLPTR;
+  this->LogFile = nullptr;
 
   // regex to detect <DartMeasurement>...</DartMeasurement>
   this->DartStuff.compile("(<DartMeasurement.*/DartMeasurement[a-zA-Z]*>)");
@@ -600,7 +600,7 @@ int cmCTestTestHandler::ProcessHandler()
       cmCTestLog(this->CTest, ERROR_MESSAGE, "Cannot create "
                    << (this->MemCheck ? "memory check" : "testing")
                    << " XML file" << std::endl);
-      this->LogFile = CM_NULLPTR;
+      this->LogFile = nullptr;
       return 1;
     }
     cmXMLWriter xml(xmlfile);
@@ -608,15 +608,15 @@ int cmCTestTestHandler::ProcessHandler()
   }
 
   if (!this->PostProcessHandler()) {
-    this->LogFile = CM_NULLPTR;
+    this->LogFile = nullptr;
     return -1;
   }
 
   if (!failed.empty()) {
-    this->LogFile = CM_NULLPTR;
+    this->LogFile = nullptr;
     return -1;
   }
-  this->LogFile = CM_NULLPTR;
+  this->LogFile = nullptr;
   return 0;
 }
 
@@ -1327,7 +1327,7 @@ void cmCTestTestHandler::ProcessDirectory(std::vector<std::string>& passed,
 
   bool randomSchedule = this->CTest->GetScheduleType() == "Random";
   if (randomSchedule) {
-    srand((unsigned)time(CM_NULLPTR));
+    srand((unsigned)time(nullptr));
   }
 
   for (ListOfTests::iterator it = this->TestList.begin();
@@ -1556,8 +1556,8 @@ int cmCTestTestHandler::ExecuteCommands(std::vector<std::string>& vec)
     int retVal = 0;
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                        "Run command: " << *it << std::endl, this->Quiet);
-    if (!cmSystemTools::RunSingleCommand(it->c_str(), CM_NULLPTR, CM_NULLPTR,
-                                         &retVal, CM_NULLPTR,
+    if (!cmSystemTools::RunSingleCommand(it->c_str(), nullptr, nullptr,
+                                         &retVal, nullptr,
                                          cmSystemTools::OUTPUT_MERGE
                                          /*this->Verbose*/) ||
         retVal != 0) {
diff --git a/Source/CTest/cmCTestUpdateCommand.cxx b/Source/CTest/cmCTestUpdateCommand.cxx
index 8c03754..3d800f8 100644
--- a/Source/CTest/cmCTestUpdateCommand.cxx
+++ b/Source/CTest/cmCTestUpdateCommand.cxx
@@ -78,12 +78,12 @@ cmCTestGenericHandler* cmCTestUpdateCommand::InitializeHandler()
     this->CTest->GetInitializedHandler("update");
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate update handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
   handler->SetCommand(this);
   if (source_dir.empty()) {
     this->SetError("source directory not specified. Please use SOURCE tag");
-    return CM_NULLPTR;
+    return nullptr;
   }
   handler->SetOption("SourceDirectory", source_dir.c_str());
   handler->SetQuiet(this->Quiet);
diff --git a/Source/CTest/cmCTestUpdateHandler.cxx b/Source/CTest/cmCTestUpdateHandler.cxx
index e08a9b7..0504f90 100644
--- a/Source/CTest/cmCTestUpdateHandler.cxx
+++ b/Source/CTest/cmCTestUpdateHandler.cxx
@@ -309,7 +309,7 @@ bool cmCTestUpdateHandler::SelectVCS()
 
   // If no update command was specified, lookup one for this VCS tool.
   if (this->UpdateCommand.empty()) {
-    const char* key = CM_NULLPTR;
+    const char* key = nullptr;
     switch (this->UpdateType) {
       case e_CVS:
         key = "CVSCommand";
diff --git a/Source/CTest/cmCTestUploadCommand.cxx b/Source/CTest/cmCTestUploadCommand.cxx
index 717117a..d85f35f 100644
--- a/Source/CTest/cmCTestUploadCommand.cxx
+++ b/Source/CTest/cmCTestUploadCommand.cxx
@@ -18,7 +18,7 @@ cmCTestGenericHandler* cmCTestUploadCommand::InitializeHandler()
     this->CTest->GetInitializedHandler("upload");
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate upload handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
   static_cast<cmCTestUploadHandler*>(handler)->SetFiles(this->Files);
 
diff --git a/Source/CTest/cmCTestVC.cxx b/Source/CTest/cmCTestVC.cxx
index fb2742e..186d2d4 100644
--- a/Source/CTest/cmCTestVC.cxx
+++ b/Source/CTest/cmCTestVC.cxx
@@ -60,7 +60,7 @@ bool cmCTestVC::InitialCheckout(const char* command)
        ai != args.end(); ++ai) {
     vc_co.push_back(ai->c_str());
   }
-  vc_co.push_back(CM_NULLPTR);
+  vc_co.push_back(nullptr);
 
   // Run the initial checkout command and log its output.
   this->Log << "--- Begin Initial Checkout ---\n";
@@ -113,7 +113,7 @@ bool cmCTestVC::RunUpdateCommand(char const* const* cmd, OutputParser* out,
   }
 
   // Run the command.
-  return this->RunChild(cmd, out, err, CM_NULLPTR, encoding);
+  return this->RunChild(cmd, out, err, nullptr, encoding);
 }
 
 std::string cmCTestVC::GetNightlyTime()
diff --git a/Source/CTest/cmCTestVC.h b/Source/CTest/cmCTestVC.h
index 6400bcd..e04cb48 100644
--- a/Source/CTest/cmCTestVC.h
+++ b/Source/CTest/cmCTestVC.h
@@ -100,8 +100,8 @@ protected:
     Revision const* PriorRev;
     File()
       : Status(PathUpdated)
-      , Rev(CM_NULLPTR)
-      , PriorRev(CM_NULLPTR)
+      , Rev(nullptr)
+      , PriorRev(nullptr)
     {
     }
     File(PathStatus status, Revision const* rev, Revision const* priorRev)
@@ -117,12 +117,12 @@ protected:
 
   /** Run a command line and send output to given parsers.  */
   bool RunChild(char const* const* cmd, OutputParser* out, OutputParser* err,
-                const char* workDir = CM_NULLPTR,
+                const char* workDir = nullptr,
                 Encoding encoding = cmProcessOutput::Auto);
 
   /** Run VC update command line and send output to given parsers.  */
   bool RunUpdateCommand(char const* const* cmd, OutputParser* out,
-                        OutputParser* err = CM_NULLPTR,
+                        OutputParser* err = nullptr,
                         Encoding encoding = cmProcessOutput::Auto);
 
   /** Write xml element for one file.  */
diff --git a/Source/CTest/cmParseMumpsCoverage.cxx b/Source/CTest/cmParseMumpsCoverage.cxx
index eb29f55..8802f15 100644
--- a/Source/CTest/cmParseMumpsCoverage.cxx
+++ b/Source/CTest/cmParseMumpsCoverage.cxx
@@ -135,8 +135,8 @@ bool cmParseMumpsCoverage::FindMumpsFile(std::string const& routine,
     return true;
   }
   // try some alternate names
-  const char* tryname[] = { "GUX", "GTM", "ONT", CM_NULLPTR };
-  for (int k = 0; tryname[k] != CM_NULLPTR; k++) {
+  const char* tryname[] = { "GUX", "GTM", "ONT", nullptr };
+  for (int k = 0; tryname[k] != nullptr; k++) {
     std::string routine2 = routine + tryname[k];
     i = this->RoutineToDirectory.find(routine2);
     if (i != this->RoutineToDirectory.end()) {
diff --git a/Source/CTest/cmProcess.cxx b/Source/CTest/cmProcess.cxx
index 9680a69..a7f0f4b 100644
--- a/Source/CTest/cmProcess.cxx
+++ b/Source/CTest/cmProcess.cxx
@@ -9,7 +9,7 @@
 
 cmProcess::cmProcess()
 {
-  this->Process = CM_NULLPTR;
+  this->Process = nullptr;
   this->Timeout = 0;
   this->TotalTime = 0;
   this->ExitValue = 0;
@@ -45,7 +45,7 @@ bool cmProcess::StartProcess()
        i != this->Arguments.end(); ++i) {
     this->ProcessArgs.push_back(i->c_str());
   }
-  this->ProcessArgs.push_back(CM_NULLPTR); // null terminate the list
+  this->ProcessArgs.push_back(nullptr); // null terminate the list
   this->Process = cmsysProcess_New();
   cmsysProcess_SetCommand(this->Process, &*this->ProcessArgs.begin());
   if (!this->WorkingDirectory.empty()) {
diff --git a/Source/Checks/cm_cxx_features.cmake b/Source/Checks/cm_cxx_features.cmake
index e75a7ef..7f2b8a0 100644
--- a/Source/Checks/cm_cxx_features.cmake
+++ b/Source/Checks/cm_cxx_features.cmake
@@ -51,6 +51,5 @@ cm_check_cxx_feature(make_unique)
 if(CMake_HAVE_CXX_MAKE_UNIQUE)
   set(CMake_HAVE_CXX_UNIQUE_PTR 1)
 endif()
-cm_check_cxx_feature(nullptr)
 cm_check_cxx_feature(override)
 cm_check_cxx_feature(unique_ptr)
diff --git a/Source/Checks/cm_cxx_nullptr.cxx b/Source/Checks/cm_cxx_nullptr.cxx
deleted file mode 100644
index 500684a..0000000
--- a/Source/Checks/cm_cxx_nullptr.cxx
+++ /dev/null
@@ -1,14 +0,0 @@
-int test(int)
-{
-  return -1;
-}
-
-int test(int*)
-{
-  return 0;
-}
-
-int main()
-{
-  return test(nullptr);
-}
diff --git a/Source/CursesDialog/ccmake.cxx b/Source/CursesDialog/ccmake.cxx
index 28a0e95..768c460 100644
--- a/Source/CursesDialog/ccmake.cxx
+++ b/Source/CursesDialog/ccmake.cxx
@@ -18,30 +18,29 @@
 #include <vector>
 
 static const char* cmDocumentationName[][2] = {
-  { CM_NULLPTR, "  ccmake - Curses Interface for CMake." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  ccmake - Curses Interface for CMake." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsage[][2] = {
-  { CM_NULLPTR, "  ccmake <path-to-source>\n"
-                "  ccmake <path-to-existing-build>" },
-  { CM_NULLPTR,
-    "Specify a source directory to (re-)generate a build system for "
-    "it in the current working directory.  Specify an existing build "
-    "directory to re-generate its build system." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  ccmake <path-to-source>\n"
+             "  ccmake <path-to-existing-build>" },
+  { nullptr, "Specify a source directory to (re-)generate a build system for "
+             "it in the current working directory.  Specify an existing build "
+             "directory to re-generate its build system." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsageNote[][2] = {
-  { CM_NULLPTR, "Run 'ccmake --help' for more information." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "Run 'ccmake --help' for more information." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationOptions[]
                                          [2] = { CMAKE_STANDARD_OPTIONS_TABLE,
-                                                 { CM_NULLPTR, CM_NULLPTR } };
+                                                 { nullptr, nullptr } };
 
-cmCursesForm* cmCursesForm::CurrentForm = CM_NULLPTR;
+cmCursesForm* cmCursesForm::CurrentForm = nullptr;
 
 extern "C" {
 
@@ -169,7 +168,7 @@ int main(int argc, char const* const* argv)
   touchwin(stdscr);
   endwin();
   delete cmCursesForm::CurrentForm;
-  cmCursesForm::CurrentForm = CM_NULLPTR;
+  cmCursesForm::CurrentForm = nullptr;
 
   std::cout << std::endl << std::endl;
 
diff --git a/Source/CursesDialog/cmCursesCacheEntryComposite.cxx b/Source/CursesDialog/cmCursesCacheEntryComposite.cxx
index d071c91..8596281 100644
--- a/Source/CursesDialog/cmCursesCacheEntryComposite.cxx
+++ b/Source/CursesDialog/cmCursesCacheEntryComposite.cxx
@@ -25,7 +25,7 @@ cmCursesCacheEntryComposite::cmCursesCacheEntryComposite(
 {
   this->Label = new cmCursesLabelWidget(this->LabelWidth, 1, 1, 1, key);
   this->IsNewLabel = new cmCursesLabelWidget(1, 1, 1, 1, " ");
-  this->Entry = CM_NULLPTR;
+  this->Entry = nullptr;
   this->Entry = new cmCursesStringWidget(this->EntryWidth, 1, 1, 1);
 }
 
@@ -43,7 +43,7 @@ cmCursesCacheEntryComposite::cmCursesCacheEntryComposite(
     this->IsNewLabel = new cmCursesLabelWidget(1, 1, 1, 1, " ");
   }
 
-  this->Entry = CM_NULLPTR;
+  this->Entry = nullptr;
   const char* value = cm->GetState()->GetCacheEntryValue(key);
   assert(value);
   switch (cm->GetState()->GetCacheEntryType(key)) {
@@ -104,5 +104,5 @@ const char* cmCursesCacheEntryComposite::GetValue()
   if (this->Label) {
     return this->Label->GetValue();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
diff --git a/Source/CursesDialog/cmCursesForm.cxx b/Source/CursesDialog/cmCursesForm.cxx
index 06c1e9c..bd65c4a 100644
--- a/Source/CursesDialog/cmCursesForm.cxx
+++ b/Source/CursesDialog/cmCursesForm.cxx
@@ -7,7 +7,7 @@ bool cmCursesForm::Debug = false;
 
 cmCursesForm::cmCursesForm()
 {
-  this->Form = CM_NULLPTR;
+  this->Form = nullptr;
 }
 
 cmCursesForm::~cmCursesForm()
@@ -15,7 +15,7 @@ cmCursesForm::~cmCursesForm()
   if (this->Form) {
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
 }
 
diff --git a/Source/CursesDialog/cmCursesLongMessageForm.cxx b/Source/CursesDialog/cmCursesLongMessageForm.cxx
index 7fb065d..9bd1c11 100644
--- a/Source/CursesDialog/cmCursesLongMessageForm.cxx
+++ b/Source/CursesDialog/cmCursesLongMessageForm.cxx
@@ -26,8 +26,8 @@ cmCursesLongMessageForm::cmCursesLongMessageForm(
     this->Messages += "\n\n";
   }
   this->Title = title;
-  this->Fields[0] = CM_NULLPTR;
-  this->Fields[1] = CM_NULLPTR;
+  this->Fields[0] = nullptr;
+  this->Fields[1] = nullptr;
 }
 
 cmCursesLongMessageForm::~cmCursesLongMessageForm()
@@ -105,7 +105,7 @@ void cmCursesLongMessageForm::Render(int /*left*/, int /*top*/, int /*width*/,
   if (this->Form) {
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
 
   const char* msg = this->Messages.c_str();
@@ -114,7 +114,7 @@ void cmCursesLongMessageForm::Render(int /*left*/, int /*top*/, int /*width*/,
 
   if (this->Fields[0]) {
     free_field(this->Fields[0]);
-    this->Fields[0] = CM_NULLPTR;
+    this->Fields[0] = nullptr;
   }
 
   this->Fields[0] = new_field(y - 6, x - 2, 1, 1, 0, 0);
diff --git a/Source/CursesDialog/cmCursesMainForm.cxx b/Source/CursesDialog/cmCursesMainForm.cxx
index 026320a..6bcc5bd 100644
--- a/Source/CursesDialog/cmCursesMainForm.cxx
+++ b/Source/CursesDialog/cmCursesMainForm.cxx
@@ -31,8 +31,8 @@ cmCursesMainForm::cmCursesMainForm(std::vector<std::string> const& args,
   , InitialWidth(initWidth)
 {
   this->NumberOfPages = 0;
-  this->Fields = CM_NULLPTR;
-  this->Entries = CM_NULLPTR;
+  this->Fields = nullptr;
+  this->Entries = nullptr;
   this->AdvancedMode = false;
   this->NumberOfVisibleEntries = 0;
   this->OkToGenerate = false;
@@ -59,7 +59,7 @@ cmCursesMainForm::~cmCursesMainForm()
   if (this->Form) {
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
   delete[] this->Fields;
 
@@ -70,7 +70,7 @@ cmCursesMainForm::~cmCursesMainForm()
   delete this->Entries;
   if (this->CMakeInstance) {
     delete this->CMakeInstance;
-    this->CMakeInstance = CM_NULLPTR;
+    this->CMakeInstance = nullptr;
   }
 }
 
@@ -180,7 +180,7 @@ void cmCursesMainForm::RePost()
   if (this->Form) {
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
   delete[] this->Fields;
   if (this->AdvancedMode) {
@@ -210,7 +210,7 @@ void cmCursesMainForm::RePost()
   this->Fields = new FIELD*[3 * this->NumberOfVisibleEntries + 1];
   size_t cc;
   for (cc = 0; cc < 3 * this->NumberOfVisibleEntries + 1; cc++) {
-    this->Fields[cc] = CM_NULLPTR;
+    this->Fields[cc] = nullptr;
   }
 
   // Assign fields
@@ -239,7 +239,7 @@ void cmCursesMainForm::RePost()
     this->NumberOfVisibleEntries = 1;
   }
   // Has to be null terminated.
-  this->Fields[3 * this->NumberOfVisibleEntries] = CM_NULLPTR;
+  this->Fields[3 * this->NumberOfVisibleEntries] = nullptr;
 }
 
 void cmCursesMainForm::Render(int left, int top, int width, int height)
@@ -259,7 +259,7 @@ void cmCursesMainForm::Render(int left, int top, int width, int height)
     // Delete the previous form
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
 
   // Wrong window size
@@ -341,14 +341,14 @@ void cmCursesMainForm::PrintKeys(int process /* = 0 */)
   }
 
   // Give the current widget (if it exists), a chance to print keys
-  cmCursesWidget* cw = CM_NULLPTR;
+  cmCursesWidget* cw = nullptr;
   if (this->Form) {
     FIELD* currentField = current_field(this->Form);
     cw = reinterpret_cast<cmCursesWidget*>(field_userptr(currentField));
   }
 
   char fmt_s[] = "%s";
-  if (cw == CM_NULLPTR || !cw->PrintKeys()) {
+  if (cw == nullptr || !cw->PrintKeys()) {
     char firstLine[512] = "";
     char secondLine[512] = "";
     char thirdLine[512] = "";
@@ -425,7 +425,7 @@ void cmCursesMainForm::UpdateStatusBar(const char* message)
   // Get the key of the current entry
   FIELD* cur = current_field(this->Form);
   int findex = field_index(cur);
-  cmCursesWidget* lbl = CM_NULLPTR;
+  cmCursesWidget* lbl = nullptr;
   if (findex >= 0) {
     lbl = reinterpret_cast<cmCursesWidget*>(
       field_userptr(this->Fields[findex - 2]));
@@ -557,7 +557,7 @@ int cmCursesMainForm::Configure(int noconfigure)
   this->FillCacheManagerFromUI();
   this->CMakeInstance->SaveCache(
     this->CMakeInstance->GetHomeOutputDirectory());
-  this->LoadCache(CM_NULLPTR);
+  this->LoadCache(nullptr);
 
   // Get rid of previous errors
   this->Errors = std::vector<std::string>();
@@ -574,7 +574,7 @@ int cmCursesMainForm::Configure(int noconfigure)
   } else {
     retVal = this->CMakeInstance->Configure();
   }
-  this->CMakeInstance->SetProgressCallback(CM_NULLPTR, CM_NULLPTR);
+  this->CMakeInstance->SetProgressCallback(nullptr, nullptr);
 
   keypad(stdscr, true); /* Use key symbols as KEY_DOWN */
 
@@ -628,7 +628,7 @@ int cmCursesMainForm::Generate()
   // run the generate process
   int retVal = this->CMakeInstance->Generate();
 
-  this->CMakeInstance->SetProgressCallback(CM_NULLPTR, CM_NULLPTR);
+  this->CMakeInstance->SetProgressCallback(nullptr, nullptr);
   keypad(stdscr, true); /* Use key symbols as KEY_DOWN */
 
   if (retVal != 0 || !this->Errors.empty()) {
@@ -877,7 +877,7 @@ void cmCursesMainForm::HandleInput()
         cmCursesWidget* lbl = reinterpret_cast<cmCursesWidget*>(
           field_userptr(this->Fields[findex - 2]));
         const char* curField = lbl->GetValue();
-        const char* helpString = CM_NULLPTR;
+        const char* helpString = nullptr;
 
         const char* existingValue =
           this->CMakeInstance->GetState()->GetCacheEntryValue(curField);
@@ -962,7 +962,7 @@ void cmCursesMainForm::HandleInput()
         // (findex always corresponds to the value field)
         FIELD* nextCur;
         if (findex == 2) {
-          nextCur = CM_NULLPTR;
+          nextCur = nullptr;
         } else if (findex == 3 * this->NumberOfVisibleEntries - 1) {
           nextCur = this->Fields[findex - 5];
         } else {
@@ -992,7 +992,7 @@ void cmCursesMainForm::HandleInput()
 
           if (nextCur) {
             // make the next or prev. current field after deletion
-            nextCur = CM_NULLPTR;
+            nextCur = nullptr;
             std::vector<cmCursesCacheEntryComposite*>::iterator it;
             for (it = this->Entries->begin(); it != this->Entries->end();
                  ++it) {
@@ -1041,7 +1041,7 @@ void cmCursesMainForm::JumpToCacheEntry(const char* astr)
   int findex = start_index;
   for (;;) {
     if (!str.empty()) {
-      cmCursesWidget* lbl = CM_NULLPTR;
+      cmCursesWidget* lbl = nullptr;
       if (findex >= 0) {
         lbl = reinterpret_cast<cmCursesWidget*>(
           field_userptr(this->Fields[findex - 2]));
diff --git a/Source/CursesDialog/cmCursesMainForm.h b/Source/CursesDialog/cmCursesMainForm.h
index e35cf3e..404a971 100644
--- a/Source/CursesDialog/cmCursesMainForm.h
+++ b/Source/CursesDialog/cmCursesMainForm.h
@@ -64,7 +64,7 @@ public:
    * exception is during a resize. The optional argument specifies the
    * string to be displayed in the status bar.
    */
-  void UpdateStatusBar() CM_OVERRIDE { this->UpdateStatusBar(CM_NULLPTR); }
+  void UpdateStatusBar() CM_OVERRIDE { this->UpdateStatusBar(nullptr); }
   virtual void UpdateStatusBar(const char* message);
 
   /**
diff --git a/Source/CursesDialog/cmCursesStringWidget.cxx b/Source/CursesDialog/cmCursesStringWidget.cxx
index ff189f0..8cb9c1f 100644
--- a/Source/CursesDialog/cmCursesStringWidget.cxx
+++ b/Source/CursesDialog/cmCursesStringWidget.cxx
@@ -74,7 +74,7 @@ bool cmCursesStringWidget::HandleInput(int& key, cmCursesMainForm* fm,
     return false;
   }
 
-  this->OriginalString = CM_NULLPTR;
+  this->OriginalString = nullptr;
   this->Done = false;
 
   char debugMessage[128];
diff --git a/Source/CursesDialog/cmCursesWidget.cxx b/Source/CursesDialog/cmCursesWidget.cxx
index 054f27e..cc07411 100644
--- a/Source/CursesDialog/cmCursesWidget.cxx
+++ b/Source/CursesDialog/cmCursesWidget.cxx
@@ -14,7 +14,7 @@ cmCursesWidget::~cmCursesWidget()
 {
   if (this->Field) {
     free_field(this->Field);
-    this->Field = CM_NULLPTR;
+    this->Field = nullptr;
   }
 }
 
diff --git a/Source/QtDialog/CMakeSetup.cxx b/Source/QtDialog/CMakeSetup.cxx
index 7fa2ac6..9f881e2 100644
--- a/Source/QtDialog/CMakeSetup.cxx
+++ b/Source/QtDialog/CMakeSetup.cxx
@@ -22,19 +22,18 @@
 
 #include "cmSystemTools.h" // IWYU pragma: keep
 
-static const char* cmDocumentationName[][2] = { { CM_NULLPTR,
+static const char* cmDocumentationName[][2] = { { nullptr,
                                                   "  cmake-gui - CMake GUI." },
-                                                { CM_NULLPTR, CM_NULLPTR } };
+                                                { nullptr, nullptr } };
 
 static const char* cmDocumentationUsage[][2] = {
-  { CM_NULLPTR, "  cmake-gui [options]\n"
-                "  cmake-gui [options] <path-to-source>\n"
-                "  cmake-gui [options] <path-to-existing-build>" },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cmake-gui [options]\n"
+             "  cmake-gui [options] <path-to-source>\n"
+             "  cmake-gui [options] <path-to-existing-build>" },
+  { nullptr, nullptr }
 };
 
-static const char* cmDocumentationOptions[]
-                                         [2] = { { CM_NULLPTR, CM_NULLPTR } };
+static const char* cmDocumentationOptions[][2] = { { nullptr, nullptr } };
 
 #if defined(Q_OS_MAC)
 static int cmOSXInstall(std::string dir);
diff --git a/Source/QtDialog/CMakeSetupDialog.cxx b/Source/QtDialog/CMakeSetupDialog.cxx
index 5290afe..bbb2395 100644
--- a/Source/QtDialog/CMakeSetupDialog.cxx
+++ b/Source/QtDialog/CMakeSetupDialog.cxx
@@ -32,7 +32,7 @@
 
 QCMakeThread::QCMakeThread(QObject* p)
   : QThread(p)
-  , CMakeInstance(CM_NULLPTR)
+  , CMakeInstance(nullptr)
 {
 }
 
@@ -48,7 +48,7 @@ void QCMakeThread::run()
   emit this->cmakeInitialized();
   this->exec();
   delete this->CMakeInstance;
-  this->CMakeInstance = CM_NULLPTR;
+  this->CMakeInstance = nullptr;
 }
 
 CMakeSetupDialog::CMakeSetupDialog()
diff --git a/Source/QtDialog/Compilers.h b/Source/QtDialog/Compilers.h
index 6c8c8f5..7605e26 100644
--- a/Source/QtDialog/Compilers.h
+++ b/Source/QtDialog/Compilers.h
@@ -13,7 +13,7 @@ class Compilers : public QWidget, public Ui::Compilers
 {
   Q_OBJECT
 public:
-  Compilers(QWidget* p = CM_NULLPTR)
+  Compilers(QWidget* p = nullptr)
     : QWidget(p)
   {
     this->setupUi(this);
diff --git a/Source/QtDialog/QCMake.h b/Source/QtDialog/QCMake.h
index e14cdf2..9980390 100644
--- a/Source/QtDialog/QCMake.h
+++ b/Source/QtDialog/QCMake.h
@@ -63,7 +63,7 @@ class QCMake : public QObject
 {
   Q_OBJECT
 public:
-  QCMake(QObject* p = CM_NULLPTR);
+  QCMake(QObject* p = nullptr);
   ~QCMake();
 public slots:
   /// load the cache file in a directory
diff --git a/Source/QtDialog/QCMakeCacheView.cxx b/Source/QtDialog/QCMakeCacheView.cxx
index 08c2d58..c6b007d 100644
--- a/Source/QtDialog/QCMakeCacheView.cxx
+++ b/Source/QtDialog/QCMakeCacheView.cxx
@@ -539,7 +539,7 @@ QWidget* QCMakeCacheModelDelegate::createEditor(
   QModelIndex var = idx.sibling(idx.row(), 0);
   int type = var.data(QCMakeCacheModel::TypeRole).toInt();
   if (type == QCMakeProperty::BOOL) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   if (type == QCMakeProperty::PATH) {
     QCMakePathEditor* editor =
@@ -642,7 +642,7 @@ QSize QCMakeCacheModelDelegate::sizeHint(const QStyleOptionViewItem& option,
   QStyleOptionButton opt;
   opt.QStyleOption::operator=(option);
   sz = sz.expandedTo(
-    style->subElementRect(QStyle::SE_ViewItemCheckIndicator, &opt, CM_NULLPTR)
+    style->subElementRect(QStyle::SE_ViewItemCheckIndicator, &opt, nullptr)
       .size());
 
   return sz;
diff --git a/Source/QtDialog/QCMakeWidgets.cxx b/Source/QtDialog/QCMakeWidgets.cxx
index 7f0cafa..b544b86 100644
--- a/Source/QtDialog/QCMakeWidgets.cxx
+++ b/Source/QtDialog/QCMakeWidgets.cxx
@@ -57,7 +57,7 @@ void QCMakeFilePathEditor::chooseFile()
   emit this->fileDialogExists(true);
   path =
     QFileDialog::getOpenFileName(this, title, info.absolutePath(), QString(),
-                                 CM_NULLPTR, QFileDialog::DontResolveSymlinks);
+                                 nullptr, QFileDialog::DontResolveSymlinks);
   emit this->fileDialogExists(false);
 
   if (!path.isEmpty()) {
@@ -89,7 +89,7 @@ void QCMakePathEditor::chooseFile()
 // use same QDirModel for all completers
 static QDirModel* fileDirModel()
 {
-  static QDirModel* m = CM_NULLPTR;
+  static QDirModel* m = nullptr;
   if (!m) {
     m = new QDirModel();
   }
@@ -97,7 +97,7 @@ static QDirModel* fileDirModel()
 }
 static QDirModel* pathDirModel()
 {
-  static QDirModel* m = CM_NULLPTR;
+  static QDirModel* m = nullptr;
   if (!m) {
     m = new QDirModel();
     m->setFilter(QDir::AllDirs | QDir::Drives | QDir::NoDotAndDotDot);
diff --git a/Source/QtDialog/QCMakeWidgets.h b/Source/QtDialog/QCMakeWidgets.h
index 1ec666f..87475b2 100644
--- a/Source/QtDialog/QCMakeWidgets.h
+++ b/Source/QtDialog/QCMakeWidgets.h
@@ -35,7 +35,7 @@ class QCMakePathEditor : public QCMakeFileEditor
 {
   Q_OBJECT
 public:
-  QCMakePathEditor(QWidget* p = CM_NULLPTR, const QString& var = QString());
+  QCMakePathEditor(QWidget* p = nullptr, const QString& var = QString());
   void chooseFile();
 };
 
@@ -44,8 +44,7 @@ class QCMakeFilePathEditor : public QCMakeFileEditor
 {
   Q_OBJECT
 public:
-  QCMakeFilePathEditor(QWidget* p = CM_NULLPTR,
-                       const QString& var = QString());
+  QCMakeFilePathEditor(QWidget* p = nullptr, const QString& var = QString());
   void chooseFile();
 };
 
diff --git a/Source/cmAddCustomCommandCommand.cxx b/Source/cmAddCustomCommandCommand.cxx
index b5e7c9e..bd054e8 100644
--- a/Source/cmAddCustomCommandCommand.cxx
+++ b/Source/cmAddCustomCommandCommand.cxx
@@ -31,7 +31,7 @@ bool cmAddCustomCommandCommand::InitialPass(
 
   std::string source, target, main_dependency, working, depfile;
   std::string comment_buffer;
-  const char* comment = CM_NULLPTR;
+  const char* comment = nullptr;
   std::vector<std::string> depends, outputs, output, byproducts;
   bool verbatim = false;
   bool append = false;
diff --git a/Source/cmAddCustomTargetCommand.cxx b/Source/cmAddCustomTargetCommand.cxx
index 87e1147..a8d5b2e 100644
--- a/Source/cmAddCustomTargetCommand.cxx
+++ b/Source/cmAddCustomTargetCommand.cxx
@@ -49,7 +49,7 @@ bool cmAddCustomTargetCommand::InitialPass(
   bool uses_terminal = false;
   bool command_expand_lists = false;
   std::string comment_buffer;
-  const char* comment = CM_NULLPTR;
+  const char* comment = nullptr;
   std::vector<std::string> sources;
 
   // Keep track of parser state.
diff --git a/Source/cmArchiveWrite.cxx b/Source/cmArchiveWrite.cxx
index 0f13b11..02408a1 100644
--- a/Source/cmArchiveWrite.cxx
+++ b/Source/cmArchiveWrite.cxx
@@ -146,9 +146,9 @@ cmArchiveWrite::cmArchiveWrite(std::ostream& os, Compress c,
   }
 
   if (archive_write_open(
-        this->Archive, this, CM_NULLPTR,
+        this->Archive, this, nullptr,
         reinterpret_cast<archive_write_callback*>(&Callback::Write),
-        CM_NULLPTR) != ARCHIVE_OK) {
+        nullptr) != ARCHIVE_OK) {
     this->Error = "archive_write_open: ";
     this->Error += cm_archive_error_string(this->Archive);
     return;
@@ -224,7 +224,7 @@ bool cmArchiveWrite::AddFile(const char* file, size_t skip, const char* prefix)
   Entry e;
   cm_archive_entry_copy_sourcepath(e, file);
   cm_archive_entry_copy_pathname(e, dest);
-  if (archive_read_disk_entry_from_file(this->Disk, e, -1, CM_NULLPTR) !=
+  if (archive_read_disk_entry_from_file(this->Disk, e, -1, nullptr) !=
       ARCHIVE_OK) {
     this->Error = "archive_read_disk_entry_from_file '";
     this->Error += file;
diff --git a/Source/cmArchiveWrite.h b/Source/cmArchiveWrite.h
index 4c85c0d..56dce2a 100644
--- a/Source/cmArchiveWrite.h
+++ b/Source/cmArchiveWrite.h
@@ -67,13 +67,13 @@ public:
    * skip.  The remaining part of the input path is appended to the
    * "prefix" value to construct the final name in the archive.
    */
-  bool Add(std::string path, size_t skip = 0, const char* prefix = CM_NULLPTR,
+  bool Add(std::string path, size_t skip = 0, const char* prefix = nullptr,
            bool recursive = true);
 
   /** Returns true if there has been no error.  */
   operator safe_bool() const
   {
-    return this->Okay() ? &cmArchiveWrite::safe_bool_true : CM_NULLPTR;
+    return this->Okay() ? &cmArchiveWrite::safe_bool_true : nullptr;
   }
 
   /** Returns true if there has been an error.  */
diff --git a/Source/cmCPluginAPI.cxx b/Source/cmCPluginAPI.cxx
index e78f5fe..e0b1711 100644
--- a/Source/cmCPluginAPI.cxx
+++ b/Source/cmCPluginAPI.cxx
@@ -218,8 +218,8 @@ void CCONV cmAddUtilityCommand(void* arg, const char* utilityName,
   }
 
   // Pass the call to the makefile instance.
-  mf->AddUtilityCommand(utilityName, (all ? false : true), CM_NULLPTR,
-                        depends2, commandLines);
+  mf->AddUtilityCommand(utilityName, (all ? false : true), nullptr, depends2,
+                        commandLines);
 }
 void CCONV cmAddCustomCommand(void* arg, const char* source,
                               const char* command, int numArgs,
@@ -257,7 +257,7 @@ void CCONV cmAddCustomCommand(void* arg, const char* source,
   }
 
   // Pass the call to the makefile instance.
-  const char* no_comment = CM_NULLPTR;
+  const char* no_comment = nullptr;
   mf->AddCustomCommandOldStyle(target, outputs2, depends2, source,
                                commandLines, no_comment);
 }
@@ -291,8 +291,8 @@ void CCONV cmAddCustomCommandToOutput(void* arg, const char* output,
   }
 
   // Pass the call to the makefile instance.
-  const char* no_comment = CM_NULLPTR;
-  const char* no_working_dir = CM_NULLPTR;
+  const char* no_comment = nullptr;
+  const char* no_working_dir = nullptr;
   mf->AddCustomCommandToOutput(output, depends2, main_dependency, commandLines,
                                no_comment, no_working_dir);
 }
@@ -333,8 +333,8 @@ void CCONV cmAddCustomCommandToTarget(void* arg, const char* target,
   // Pass the call to the makefile instance.
   std::vector<std::string> no_byproducts;
   std::vector<std::string> no_depends;
-  const char* no_comment = CM_NULLPTR;
-  const char* no_working_dir = CM_NULLPTR;
+  const char* no_comment = nullptr;
+  const char* no_working_dir = nullptr;
   mf->AddCustomCommandToTarget(target, no_byproducts, no_depends, commandLines,
                                cctype, no_comment, no_working_dir);
 }
@@ -443,7 +443,7 @@ void CCONV cmExpandSourceListArguments(void* arg, int numArgs,
     result.push_back(args[i]);
   }
   int resargc = static_cast<int>(result.size());
-  char** resargv = CM_NULLPTR;
+  char** resargv = nullptr;
   if (resargc) {
     resargv = (char**)malloc(resargc * sizeof(char*));
   }
@@ -482,7 +482,7 @@ int CCONV cmGetTotalArgumentSize(int argc, char** argv)
 struct cmCPluginAPISourceFile
 {
   cmCPluginAPISourceFile()
-    : RealSourceFile(CM_NULLPTR)
+    : RealSourceFile(nullptr)
   {
   }
   cmSourceFile* RealSourceFile;
@@ -554,7 +554,7 @@ void CCONV* cmGetSource(void* arg, const char* name)
     }
     return (void*)i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void* CCONV cmAddSource(void* arg, void* arg2)
@@ -562,7 +562,7 @@ void* CCONV cmAddSource(void* arg, void* arg2)
   cmMakefile* mf = static_cast<cmMakefile*>(arg);
   cmCPluginAPISourceFile* osf = static_cast<cmCPluginAPISourceFile*>(arg2);
   if (osf->FullPath.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Create the real cmSourceFile instance and copy over saved information.
diff --git a/Source/cmCTest.cxx b/Source/cmCTest.cxx
index dfb1398..f948645 100644
--- a/Source/cmCTest.cxx
+++ b/Source/cmCTest.cxx
@@ -67,7 +67,7 @@
 struct tm* cmCTest::GetNightlyTime(std::string const& str, bool tomorrowtag)
 {
   struct tm* lctime;
-  time_t tctime = time(CM_NULLPTR);
+  time_t tctime = time(nullptr);
   lctime = gmtime(&tctime);
   char buf[1024];
   // add todays year day and month to the time in str because
@@ -85,7 +85,7 @@ struct tm* cmCTest::GetNightlyTime(std::string const& str, bool tomorrowtag)
   // As such, this time may be in the past or in the future.
   time_t ntime = curl_getdate(buf, &tctime);
   cmCTestLog(this, DEBUG, "   Get curl time: " << ntime << std::endl);
-  tctime = time(CM_NULLPTR);
+  tctime = time(nullptr);
   cmCTestLog(this, DEBUG, "   Get the current time: " << tctime << std::endl);
 
   const int dayLength = 24 * 60 * 60;
@@ -131,7 +131,7 @@ std::string cmCTest::CleanString(const std::string& str)
 
 std::string cmCTest::CurrentTime()
 {
-  time_t currenttime = time(CM_NULLPTR);
+  time_t currenttime = time(nullptr);
   struct tm* t = localtime(&currenttime);
   // return ::CleanString(ctime(&currenttime));
   char current_time[1024];
@@ -242,7 +242,7 @@ std::string cmCTest::DecodeURL(const std::string& in)
   for (const char* c = in.c_str(); *c; ++c) {
     if (*c == '%' && isxdigit(*(c + 1)) && isxdigit(*(c + 2))) {
       char buf[3] = { *(c + 1), *(c + 2), 0 };
-      out.append(1, char(strtoul(buf, CM_NULLPTR, 16)));
+      out.append(1, char(strtoul(buf, nullptr, 16)));
       c += 2;
     } else {
       out.append(1, *c);
@@ -286,7 +286,7 @@ cmCTest::cmCTest()
   this->ScheduleType = "";
   this->StopTime = "";
   this->NextDayStopTime = false;
-  this->OutputLogFile = CM_NULLPTR;
+  this->OutputLogFile = nullptr;
   this->OutputLogFileLastTag = -1;
   this->SuppressUpdatingCTestConfiguration = false;
   this->DartVersion = 1;
@@ -344,7 +344,7 @@ cmCTest::cmCTest()
 cmCTest::~cmCTest()
 {
   cmDeleteAll(this->TestingHandlers);
-  this->SetOutputLogFileName(CM_NULLPTR);
+  this->SetOutputLogFileName(nullptr);
 }
 
 void cmCTest::SetParallelLevel(int level)
@@ -465,7 +465,7 @@ int cmCTest::Initialize(const char* binary_dir, cmCTestStartCommand* command)
     std::string tag;
 
     if (createNewTag) {
-      time_t tctime = time(CM_NULLPTR);
+      time_t tctime = time(nullptr);
       if (this->TomorrowTag) {
         tctime += (24 * 60 * 60);
       }
@@ -490,7 +490,7 @@ int cmCTest::Initialize(const char* binary_dir, cmCTestStartCommand* command)
         }
         tfin.close();
       }
-      if (tag.empty() || (CM_NULLPTR != command) || this->Parts[PartStart]) {
+      if (tag.empty() || (nullptr != command) || this->Parts[PartStart]) {
         cmCTestOptionalLog(
           this, DEBUG,
           "TestModel: " << this->GetTestModelString() << std::endl, quiet);
@@ -512,7 +512,7 @@ int cmCTest::Initialize(const char* binary_dir, cmCTestStartCommand* command)
           ofs << this->GetTestModelString() << std::endl;
         }
         ofs.close();
-        if (CM_NULLPTR == command) {
+        if (nullptr == command) {
           cmCTestOptionalLog(this, OUTPUT, "Create new tag: "
                                << tag << " - " << this->GetTestModelString()
                                << std::endl,
@@ -808,7 +808,7 @@ cmCTestGenericHandler* cmCTest::GetInitializedHandler(const char* handler)
   cmCTest::t_TestingHandlers::iterator it =
     this->TestingHandlers.find(handler);
   if (it == this->TestingHandlers.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   it->second->Initialize();
   return it->second;
@@ -819,7 +819,7 @@ cmCTestGenericHandler* cmCTest::GetHandler(const char* handler)
   cmCTest::t_TestingHandlers::iterator it =
     this->TestingHandlers.find(handler);
   if (it == this->TestingHandlers.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return it->second;
 }
@@ -977,7 +977,7 @@ int cmCTest::RunMakeCommand(const char* command, std::string& output,
        a != args.end(); ++a) {
     argv.push_back(a->c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   output = "";
   cmCTestLog(this, HANDLER_VERBOSE_OUTPUT, "Run command:");
@@ -1007,7 +1007,7 @@ int cmCTest::RunMakeCommand(const char* command, std::string& output,
   cmCTestLog(this, HANDLER_PROGRESS_OUTPUT, "   Each . represents "
                << tick_len << " bytes of output" << std::endl
                << "    " << std::flush);
-  while (cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) {
+  while (cmsysProcess_WaitForData(cp, &data, &length, nullptr)) {
     processOutput.DecodeText(data, length, strdata);
     for (size_t cc = 0; cc < strdata.size(); ++cc) {
       if (strdata[cc] == 0) {
@@ -1043,7 +1043,7 @@ int cmCTest::RunMakeCommand(const char* command, std::string& output,
   cmCTestLog(this, HANDLER_PROGRESS_OUTPUT, " Size of output: "
                << int(double(output.size()) / 1024.0) << "K" << std::endl);
 
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
 
   int result = cmsysProcess_GetState(cp);
 
@@ -1172,7 +1172,7 @@ int cmCTest::RunTest(std::vector<const char*> argv, std::string* output,
   int length;
   cmProcessOutput processOutput(encoding);
   std::string strdata;
-  while (cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) {
+  while (cmsysProcess_WaitForData(cp, &data, &length, nullptr)) {
     processOutput.DecodeText(data, length, strdata);
     if (output) {
       tempOutput.insert(tempOutput.end(), data, data + length);
@@ -1192,7 +1192,7 @@ int cmCTest::RunTest(std::vector<const char*> argv, std::string* output,
     }
   }
 
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   processOutput.DecodeText(tempOutput, tempOutput);
   if (output && tempOutput.begin() != tempOutput.end()) {
     output->append(&*tempOutput.begin(), tempOutput.size());
@@ -2229,7 +2229,7 @@ int cmCTest::ExecuteTests()
       it->second->SetSubmitIndex(this->SubmitIndex);
     }
     std::string cwd = cmSystemTools::GetCurrentWorkingDirectory();
-    if (!this->Initialize(cwd.c_str(), CM_NULLPTR)) {
+    if (!this->Initialize(cwd.c_str(), nullptr)) {
       res = 12;
       cmCTestLog(this, ERROR_MESSAGE, "Problem initializing the dashboard."
                    << std::endl);
@@ -2387,7 +2387,7 @@ std::string cmCTest::GetShortPathToFile(const char* cfname)
   bool inBld = bldRelpath.find("..") == std::string::npos;
   // TODO: Handle files with .. in their name
 
-  std::string* res = CM_NULLPTR;
+  std::string* res = nullptr;
 
   if (inSrc && inBld) {
     // If both have relative path with no dots, pick the shorter one
@@ -2437,7 +2437,7 @@ void cmCTest::EmptyCTestConfiguration()
 void cmCTest::DetermineNextDayStop()
 {
   struct tm* lctime;
-  time_t current_time = time(CM_NULLPTR);
+  time_t current_time = time(nullptr);
   lctime = gmtime(&current_time);
   int gm_hour = lctime->tm_hour;
   time_t gm_time = mktime(lctime);
@@ -2521,7 +2521,7 @@ bool cmCTest::GetProduceXML()
 const char* cmCTest::GetSpecificTrack()
 {
   if (this->SpecificTrack.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return this->SpecificTrack.c_str();
 }
@@ -2596,7 +2596,7 @@ bool cmCTest::RunCommand(const char* command, std::string* stdOut,
        a != args.end(); ++a) {
     argv.push_back(a->c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   *stdOut = "";
   *stdErr = "";
@@ -2619,7 +2619,7 @@ bool cmCTest::RunCommand(const char* command, std::string* stdOut,
   int res;
   bool done = false;
   while (!done) {
-    res = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR);
+    res = cmsysProcess_WaitForData(cp, &data, &length, nullptr);
     switch (res) {
       case cmsysProcess_Pipe_STDOUT:
         tempOutput.insert(tempOutput.end(), data, data + length);
@@ -2643,7 +2643,7 @@ bool cmCTest::RunCommand(const char* command, std::string* stdOut,
     }
   }
 
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   if (!tempOutput.empty()) {
     processOutput.DecodeText(tempOutput, tempOutput);
     stdOut->append(&*tempOutput.begin(), tempOutput.size());
@@ -2687,7 +2687,7 @@ void cmCTest::SetOutputLogFileName(const char* name)
 {
   if (this->OutputLogFile) {
     delete this->OutputLogFile;
-    this->OutputLogFile = CM_NULLPTR;
+    this->OutputLogFile = nullptr;
   }
   if (name) {
     this->OutputLogFile = new cmGeneratedFileStream(name);
@@ -2701,7 +2701,7 @@ static const char* cmCTestStringLogType[] = { "DEBUG",
                                               "HANDLER_VERBOSE_OUTPUT",
                                               "WARNING",
                                               "ERROR_MESSAGE",
-                                              CM_NULLPTR };
+                                              nullptr };
 
 #define cmCTestLogOutputFileLine(stream)                                      \
   if (this->ShowLineNumbers) {                                                \
diff --git a/Source/cmCTest.h b/Source/cmCTest.h
index 0d2a903..10bc787 100644
--- a/Source/cmCTest.h
+++ b/Source/cmCTest.h
@@ -95,7 +95,7 @@ public:
   typedef std::set<std::string> SetOfStrings;
 
   /** Process Command line arguments */
-  int Run(std::vector<std::string>&, std::string* output = CM_NULLPTR);
+  int Run(std::vector<std::string>&, std::string* output = nullptr);
 
   /**
    * Initialize and finalize testing
@@ -252,8 +252,8 @@ public:
    * escaped for this to with spaces.
    */
   bool RunCommand(const char* command, std::string* stdOut,
-                  std::string* stdErr, int* retVal = CM_NULLPTR,
-                  const char* dir = CM_NULLPTR, double timeout = 0.0,
+                  std::string* stdErr, int* retVal = nullptr,
+                  const char* dir = nullptr, double timeout = 0.0,
                   Encoding encoding = cmProcessOutput::Auto);
 
   /**
@@ -577,7 +577,7 @@ private:
 
   /** Check if the argument is the one specified */
   bool CheckArgument(const std::string& arg, const char* varg1,
-                     const char* varg2 = CM_NULLPTR);
+                     const char* varg2 = nullptr);
 
   /** Output errors from a test */
   void OutputTestErrors(std::vector<char> const& process_output);
diff --git a/Source/cmCacheManager.cxx b/Source/cmCacheManager.cxx
index 0b025ab..d599275 100644
--- a/Source/cmCacheManager.cxx
+++ b/Source/cmCacheManager.cxx
@@ -173,7 +173,7 @@ bool cmCacheManager::LoadCache(const std::string& path, bool internal,
 }
 
 const char* cmCacheManager::PersistentProperties[] = { "ADVANCED", "MODIFIED",
-                                                       "STRINGS", CM_NULLPTR };
+                                                       "STRINGS", nullptr };
 
 bool cmCacheManager::ReadPropertyEntry(std::string const& entryKey,
                                        CacheEntry& e)
@@ -440,7 +440,7 @@ cmCacheManager::CacheEntry* cmCacheManager::GetCacheEntry(
   if (i != this->Cache.end()) {
     return &i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmCacheManager::CacheIterator cmCacheManager::GetCacheIterator(const char* key)
@@ -455,7 +455,7 @@ const char* cmCacheManager::GetInitializedCacheValue(
   if (i != this->Cache.end() && i->second.Initialized) {
     return i->second.Value.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmCacheManager::PrintCache(std::ostream& out) const
@@ -610,7 +610,7 @@ const char* cmCacheManager::CacheIterator::GetProperty(
   if (!this->IsAtEnd()) {
     return this->GetEntry().GetProperty(prop);
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmCacheManager::CacheIterator::SetProperty(const std::string& p,
@@ -647,5 +647,5 @@ void cmCacheManager::CacheIterator::SetProperty(const std::string& p, bool v)
 bool cmCacheManager::CacheIterator::PropertyExists(
   const std::string& prop) const
 {
-  return this->GetProperty(prop) != CM_NULLPTR;
+  return this->GetProperty(prop) != nullptr;
 }
diff --git a/Source/cmCacheManager.h b/Source/cmCacheManager.h
index c464311..d215e10 100644
--- a/Source/cmCacheManager.h
+++ b/Source/cmCacheManager.h
@@ -117,7 +117,7 @@ public:
   void PrintCache(std::ostream&) const;
 
   ///! Get the iterator for an entry with a given key.
-  cmCacheManager::CacheIterator GetCacheIterator(const char* key = CM_NULLPTR);
+  cmCacheManager::CacheIterator GetCacheIterator(const char* key = nullptr);
 
   ///! Remove an entry from the cache
   void RemoveCacheEntry(const std::string& key);
@@ -132,7 +132,7 @@ public:
   {
     cmCacheManager::CacheIterator it = this->GetCacheIterator(key.c_str());
     if (it.IsAtEnd()) {
-      return CM_NULLPTR;
+      return nullptr;
     }
     return it.GetValue();
   }
@@ -175,8 +175,7 @@ public:
   void RemoveCacheEntryProperty(std::string const& key,
                                 std::string const& propName)
   {
-    this->GetCacheIterator(key.c_str())
-      .SetProperty(propName, (void*)CM_NULLPTR);
+    this->GetCacheIterator(key.c_str()).SetProperty(propName, (void*)nullptr);
   }
 
   void AppendCacheEntryProperty(std::string const& key,
diff --git a/Source/cmCommand.h b/Source/cmCommand.h
index ad72fe2..5f0f562 100644
--- a/Source/cmCommand.h
+++ b/Source/cmCommand.h
@@ -31,7 +31,7 @@ public:
    * Construct the command. By default it has no makefile.
    */
   cmCommand()
-    : Makefile(CM_NULLPTR)
+    : Makefile(nullptr)
   {
   }
 
diff --git a/Source/cmCommandArgumentParserHelper.cxx b/Source/cmCommandArgumentParserHelper.cxx
index 4eb4531..4764620 100644
--- a/Source/cmCommandArgumentParserHelper.cxx
+++ b/Source/cmCommandArgumentParserHelper.cxx
@@ -19,7 +19,7 @@ cmCommandArgumentParserHelper::cmCommandArgumentParserHelper()
   this->WarnUninitialized = false;
   this->CheckSystemVars = false;
   this->FileLine = -1;
-  this->FileName = CM_NULLPTR;
+  this->FileName = nullptr;
   this->RemoveEmpty = true;
   this->EmptyVariable[0] = 0;
   strcpy(this->DCURLYVariable, "${");
@@ -88,13 +88,13 @@ char* cmCommandArgumentParserHelper::ExpandSpecialVariable(const char* key,
   e << "Syntax $" << key << "{} is not supported.  "
     << "Only ${}, $ENV{}, and $CACHE{} are allowed.";
   this->SetError(e.str());
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 char* cmCommandArgumentParserHelper::ExpandVariable(const char* var)
 {
   if (!var) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   if (this->FileLine >= 0 && strcmp(var, "CMAKE_CURRENT_LIST_LINE") == 0) {
     std::ostringstream ostr;
@@ -117,7 +117,7 @@ char* cmCommandArgumentParserHelper::ExpandVariable(const char* var)
         this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, msg.str());
       }
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
   if (this->EscapeQuotes && value) {
     return this->AddString(cmSystemTools::EscapeQuotes(value));
@@ -169,7 +169,7 @@ char* cmCommandArgumentParserHelper::CombineUnions(char* in1, char* in2)
 void cmCommandArgumentParserHelper::AllocateParserType(
   cmCommandArgumentParserHelper::ParserType* pt, const char* str, int len)
 {
-  pt->str = CM_NULLPTR;
+  pt->str = nullptr;
   if (len == 0) {
     len = static_cast<int>(strlen(str));
   }
diff --git a/Source/cmCommandArgumentsHelper.cxx b/Source/cmCommandArgumentsHelper.cxx
index babddbe..36d4da4 100644
--- a/Source/cmCommandArgumentsHelper.cxx
+++ b/Source/cmCommandArgumentsHelper.cxx
@@ -11,11 +11,11 @@ cmCommandArgument::cmCommandArgument(cmCommandArgumentsHelper* args,
   , ArgumentsBeforeEmpty(true)
   , CurrentIndex(0)
 {
-  if (args != CM_NULLPTR) {
+  if (args != nullptr) {
     args->AddArgument(this);
   }
 
-  if (this->Group != CM_NULLPTR) {
+  if (this->Group != nullptr) {
     this->Group->ContainedArguments.push_back(this);
   }
 }
@@ -35,7 +35,7 @@ void cmCommandArgument::Follows(const cmCommandArgument* arg)
 
 void cmCommandArgument::FollowsGroup(const cmCommandArgumentGroup* group)
 {
-  if (group != CM_NULLPTR) {
+  if (group != nullptr) {
     this->ArgumentsBeforeEmpty = false;
     this->ArgumentsBefore.insert(group->ContainedArguments.begin(),
                                  group->ContainedArguments.end());
@@ -52,7 +52,7 @@ bool cmCommandArgument::MayFollow(const cmCommandArgument* current) const
 
 bool cmCommandArgument::KeyMatches(const std::string& key) const
 {
-  if ((this->Key == CM_NULLPTR) || (this->Key[0] == '\0')) {
+  if ((this->Key == nullptr) || (this->Key[0] == '\0')) {
     return true;
   }
   return (key == this->Key);
@@ -60,7 +60,7 @@ bool cmCommandArgument::KeyMatches(const std::string& key) const
 
 void cmCommandArgument::ApplyOwnGroup()
 {
-  if (this->Group != CM_NULLPTR) {
+  if (this->Group != nullptr) {
     for (std::vector<cmCommandArgument*>::const_iterator it =
            this->Group->ContainedArguments.begin();
          it != this->Group->ContainedArguments.end(); ++it) {
@@ -88,9 +88,9 @@ cmCAStringVector::cmCAStringVector(cmCommandArgumentsHelper* args,
                                    const char* key,
                                    cmCommandArgumentGroup* group)
   : cmCommandArgument(args, key, group)
-  , Ignore(CM_NULLPTR)
+  , Ignore(nullptr)
 {
-  if ((key == CM_NULLPTR) || (*key == 0)) {
+  if ((key == nullptr) || (*key == 0)) {
     this->DataStart = 0;
   } else {
     this->DataStart = 1;
@@ -100,7 +100,7 @@ cmCAStringVector::cmCAStringVector(cmCommandArgumentsHelper* args,
 bool cmCAStringVector::DoConsume(const std::string& arg, unsigned int index)
 {
   if (index >= this->DataStart) {
-    if ((this->Ignore == CM_NULLPTR) || (arg != this->Ignore)) {
+    if ((this->Ignore == nullptr) || (arg != this->Ignore)) {
       this->Vector.push_back(arg);
     }
   }
@@ -117,7 +117,7 @@ cmCAString::cmCAString(cmCommandArgumentsHelper* args, const char* key,
                        cmCommandArgumentGroup* group)
   : cmCommandArgument(args, key, group)
 {
-  if ((key == CM_NULLPTR) || (*key == 0)) {
+  if ((key == nullptr) || (*key == 0)) {
     this->DataStart = 0;
   } else {
     this->DataStart = 1;
@@ -199,7 +199,7 @@ void cmCommandArgumentGroup::FollowsGroup(const cmCommandArgumentGroup* group)
 void cmCommandArgumentsHelper::Parse(const std::vector<std::string>* args,
                                      std::vector<std::string>* unconsumedArgs)
 {
-  if (args == CM_NULLPTR) {
+  if (args == nullptr) {
     return;
   }
 
@@ -210,8 +210,8 @@ void cmCommandArgumentsHelper::Parse(const std::vector<std::string>* args,
     (*argIt)->Reset();
   }
 
-  cmCommandArgument* activeArgument = CM_NULLPTR;
-  const cmCommandArgument* previousArgument = CM_NULLPTR;
+  cmCommandArgument* activeArgument = nullptr;
+  const cmCommandArgument* previousArgument = nullptr;
   for (std::vector<std::string>::const_iterator it = args->begin();
        it != args->end(); ++it) {
     for (std::vector<cmCommandArgument*>::iterator argIt =
@@ -229,10 +229,10 @@ void cmCommandArgumentsHelper::Parse(const std::vector<std::string>* args,
       bool argDone = activeArgument->Consume(*it);
       previousArgument = activeArgument;
       if (argDone) {
-        activeArgument = CM_NULLPTR;
+        activeArgument = nullptr;
       }
     } else {
-      if (unconsumedArgs != CM_NULLPTR) {
+      if (unconsumedArgs != nullptr) {
         unconsumedArgs->push_back(*it);
       }
     }
diff --git a/Source/cmCommandArgumentsHelper.h b/Source/cmCommandArgumentsHelper.h
index 44db374..868c80f 100644
--- a/Source/cmCommandArgumentsHelper.h
+++ b/Source/cmCommandArgumentsHelper.h
@@ -38,7 +38,7 @@ class cmCommandArgument
 {
 public:
   cmCommandArgument(cmCommandArgumentsHelper* args, const char* key,
-                    cmCommandArgumentGroup* group = CM_NULLPTR);
+                    cmCommandArgumentGroup* group = nullptr);
   virtual ~cmCommandArgument() {}
 
   /// this argument may follow after arg. 0 means it comes first.
@@ -90,7 +90,7 @@ class cmCAStringVector : public cmCommandArgument
 {
 public:
   cmCAStringVector(cmCommandArgumentsHelper* args, const char* key,
-                   cmCommandArgumentGroup* group = CM_NULLPTR);
+                   cmCommandArgumentGroup* group = nullptr);
 
   /// Return the vector of strings
   const std::vector<std::string>& GetVector() const { return this->Vector; }
@@ -113,7 +113,7 @@ class cmCAString : public cmCommandArgument
 {
 public:
   cmCAString(cmCommandArgumentsHelper* args, const char* key,
-             cmCommandArgumentGroup* group = CM_NULLPTR);
+             cmCommandArgumentGroup* group = nullptr);
 
   /// Return the string
   const std::string& GetString() const { return this->String; }
@@ -132,7 +132,7 @@ class cmCAEnabler : public cmCommandArgument
 {
 public:
   cmCAEnabler(cmCommandArgumentsHelper* args, const char* key,
-              cmCommandArgumentGroup* group = CM_NULLPTR);
+              cmCommandArgumentGroup* group = nullptr);
 
   /// Has it been enabled ?
   bool IsEnabled() const { return this->Enabled; }
@@ -149,7 +149,7 @@ class cmCADisabler : public cmCommandArgument
 {
 public:
   cmCADisabler(cmCommandArgumentsHelper* args, const char* key,
-               cmCommandArgumentGroup* group = CM_NULLPTR);
+               cmCommandArgumentGroup* group = nullptr);
 
   /// Is it still enabled ?
   bool IsEnabled() const { return this->Enabled; }
diff --git a/Source/cmCommonTargetGenerator.cxx b/Source/cmCommonTargetGenerator.cxx
index 6a007c8..ed5f64d 100644
--- a/Source/cmCommonTargetGenerator.cxx
+++ b/Source/cmCommonTargetGenerator.cxx
@@ -79,7 +79,7 @@ void cmCommonTargetGenerator::AppendFortranFormatFlags(
     const char* tgtfmt = this->GeneratorTarget->GetProperty("Fortran_FORMAT");
     format = cmOutputConverter::GetFortranFormat(tgtfmt);
   }
-  const char* var = CM_NULLPTR;
+  const char* var = nullptr;
   switch (format) {
     case cmOutputConverter::FortranFormatFixed:
       var = "CMAKE_Fortran_FORMAT_FIXED_FLAG";
diff --git a/Source/cmComputeLinkDepends.cxx b/Source/cmComputeLinkDepends.cxx
index 9c516ee..2277bbe 100644
--- a/Source/cmComputeLinkDepends.cxx
+++ b/Source/cmComputeLinkDepends.cxx
@@ -194,7 +194,7 @@ cmComputeLinkDepends::cmComputeLinkDepends(const cmGeneratorTarget* target,
   this->OldLinkDirMode = false;
 
   // No computation has been done.
-  this->CCG = CM_NULLPTR;
+  this->CCG = nullptr;
 }
 
 cmComputeLinkDepends::~cmComputeLinkDepends()
@@ -286,7 +286,7 @@ std::map<std::string, int>::iterator cmComputeLinkDepends::AllocateLinkEntry(
   std::map<std::string, int>::iterator lei =
     this->LinkEntryIndex.insert(index_entry).first;
   this->EntryList.push_back(LinkEntry());
-  this->InferredDependSets.push_back(CM_NULLPTR);
+  this->InferredDependSets.push_back(nullptr);
   this->EntryConstraintGraph.push_back(EdgeList());
   return lei;
 }
@@ -314,7 +314,7 @@ int cmComputeLinkDepends::AddLinkEntry(cmLinkItem const& item)
   // If the item has dependencies queue it to follow them.
   if (entry.Target) {
     // Target dependencies are always known.  Follow them.
-    BFSEntry qe = { index, CM_NULLPTR };
+    BFSEntry qe = { index, nullptr };
     this->BFSQueue.push(qe);
   } else {
     // Look for an old-style <item>_LIB_DEPENDS variable.
diff --git a/Source/cmComputeLinkDepends.h b/Source/cmComputeLinkDepends.h
index 84ee916..dd0e029 100644
--- a/Source/cmComputeLinkDepends.h
+++ b/Source/cmComputeLinkDepends.h
@@ -40,7 +40,7 @@ public:
     bool IsFlag;
     LinkEntry()
       : Item()
-      , Target(CM_NULLPTR)
+      , Target(nullptr)
       , IsSharedDep(false)
       , IsFlag(false)
     {
diff --git a/Source/cmComputeLinkInformation.cxx b/Source/cmComputeLinkInformation.cxx
index b2deaaa..f348a7e 100644
--- a/Source/cmComputeLinkInformation.cxx
+++ b/Source/cmComputeLinkInformation.cxx
@@ -260,7 +260,7 @@ cmComputeLinkInformation::cmComputeLinkInformation(
     this->GlobalGenerator, target, "linker search path");
   this->OrderRuntimeSearchPath = new cmOrderDirectories(
     this->GlobalGenerator, target, "runtime search path");
-  this->OrderDependentRPath = CM_NULLPTR;
+  this->OrderDependentRPath = nullptr;
 
   // Get the language used for linking this target.
   this->LinkLanguage = this->Target->GetLinkerLanguage(config);
@@ -281,7 +281,7 @@ cmComputeLinkInformation::cmComputeLinkInformation(
   // On platforms without import libraries there may be a special flag
   // to use when creating a plugin (module) that obtains symbols from
   // the program that will load it.
-  this->LoaderFlag = CM_NULLPTR;
+  this->LoaderFlag = nullptr;
   if (!this->UseImportLibrary &&
       this->Target->GetType() == cmStateEnums::MODULE_LIBRARY) {
     std::string loader_flag_var = "CMAKE_SHARED_MODULE_LOADER_";
@@ -562,7 +562,7 @@ void cmComputeLinkInformation::AddImplicitLinkInfo(std::string const& lang)
     for (std::vector<std::string>::const_iterator i = libsVec.begin();
          i != libsVec.end(); ++i) {
       if (this->ImplicitLinkLibs.find(*i) == this->ImplicitLinkLibs.end()) {
-        this->AddItem(*i, CM_NULLPTR);
+        this->AddItem(*i, nullptr);
       }
     }
   }
@@ -616,7 +616,7 @@ void cmComputeLinkInformation::AddItem(std::string const& item,
       // Also add the item the interface specifies to be used in its place.
       std::string const& libName = tgt->GetImportedLibName(config);
       if (!libName.empty()) {
-        this->AddItem(libName, CM_NULLPTR);
+        this->AddItem(libName, nullptr);
       }
     } else {
       // Decide whether to use an import library.
@@ -710,7 +710,7 @@ void cmComputeLinkInformation::AddSharedDepItem(std::string const& item,
 
   // Check if we need to include the dependent shared library in other
   // path ordering.
-  cmOrderDirectories* order = CM_NULLPTR;
+  cmOrderDirectories* order = nullptr;
   if (this->SharedDependencyMode == SharedDepModeLibDir &&
       !this->LinkWithRuntimePath /* AddLibraryRuntimeInfo adds it */) {
     // Add the item to the linker search path.
@@ -722,7 +722,7 @@ void cmComputeLinkInformation::AddSharedDepItem(std::string const& item,
   if (order) {
     if (tgt) {
       std::string soName = tgt->GetSOName(this->Config);
-      const char* soname = soName.empty() ? CM_NULLPTR : soName.c_str();
+      const char* soname = soName.empty() ? nullptr : soName.c_str();
       order->AddRuntimeLibrary(lib, soname);
     } else {
       order->AddRuntimeLibrary(lib);
@@ -741,9 +741,9 @@ void cmComputeLinkInformation::ComputeLinkTypeInfo()
   this->LinkTypeEnabled = false;
 
   // Lookup link type selection flags.
-  const char* static_link_type_flag = CM_NULLPTR;
-  const char* shared_link_type_flag = CM_NULLPTR;
-  const char* target_type_str = CM_NULLPTR;
+  const char* static_link_type_flag = nullptr;
+  const char* shared_link_type_flag = nullptr;
+  const char* target_type_str = nullptr;
   switch (this->Target->GetType()) {
     case cmStateEnums::EXECUTABLE:
       target_type_str = "EXE";
@@ -1623,7 +1623,7 @@ void cmComputeLinkInformation::AddLibraryRuntimeInfo(
   // Try to get the soname of the library.  Only files with this name
   // could possibly conflict.
   std::string soName = target->GetSOName(this->Config);
-  const char* soname = soName.empty() ? CM_NULLPTR : soName.c_str();
+  const char* soname = soName.empty() ? nullptr : soName.c_str();
 
   // Include this library in the runtime path ordering.
   this->OrderRuntimeSearchPath->AddRuntimeLibrary(fullPath, soname);
diff --git a/Source/cmComputeLinkInformation.h b/Source/cmComputeLinkInformation.h
index 00e3ad2..f8c6214 100644
--- a/Source/cmComputeLinkInformation.h
+++ b/Source/cmComputeLinkInformation.h
@@ -33,11 +33,11 @@ public:
     Item()
       : Value()
       , IsPath(true)
-      , Target(CM_NULLPTR)
+      , Target(nullptr)
     {
     }
     Item(std::string const& v, bool p,
-         cmGeneratorTarget const* target = CM_NULLPTR)
+         cmGeneratorTarget const* target = nullptr)
       : Value(v)
       , IsPath(p)
       , Target(target)
diff --git a/Source/cmComputeTargetDepends.cxx b/Source/cmComputeTargetDepends.cxx
index 8a3a671..ff0052b 100644
--- a/Source/cmComputeTargetDepends.cxx
+++ b/Source/cmComputeTargetDepends.cxx
@@ -290,7 +290,7 @@ void cmComputeTargetDepends::AddInterfaceDepends(
   // within the project.
   if (dependee && dependee->GetType() == cmStateEnums::EXECUTABLE &&
       !dependee->IsExecutableWithExports()) {
-    dependee = CM_NULLPTR;
+    dependee = nullptr;
   }
 
   if (dependee) {
@@ -348,7 +348,7 @@ void cmComputeTargetDepends::AddTargetDepend(int depender_index,
   // within the project.
   if (linking && dependee && dependee->GetType() == cmStateEnums::EXECUTABLE &&
       !dependee->IsExecutableWithExports()) {
-    dependee = CM_NULLPTR;
+    dependee = nullptr;
   }
 
   if (dependee) {
diff --git a/Source/cmConditionEvaluator.cxx b/Source/cmConditionEvaluator.cxx
index 2bacf73..5028e6b 100644
--- a/Source/cmConditionEvaluator.cxx
+++ b/Source/cmConditionEvaluator.cxx
@@ -139,7 +139,7 @@ const char* cmConditionEvaluator::GetDefinitionIfUnquoted(
   if ((this->Policy54Status != cmPolicies::WARN &&
        this->Policy54Status != cmPolicies::OLD) &&
       argument.WasQuoted()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   const char* def = this->Makefile.GetDefinition(argument.GetValue());
@@ -455,7 +455,7 @@ bool cmConditionEvaluator::HandleLevel1(cmArgumentList& newArgs, std::string&,
       if (this->IsKeyword(keyCOMMAND, *arg) && argP1 != newArgs.end()) {
         cmCommand* command =
           this->Makefile.GetState()->GetCommand(argP1->c_str());
-        this->HandlePredicate(command != CM_NULLPTR, reducible, arg, newArgs,
+        this->HandlePredicate(command != nullptr, reducible, arg, newArgs,
                               argP1, argP2);
       }
       // does a policy exist
@@ -467,7 +467,7 @@ bool cmConditionEvaluator::HandleLevel1(cmArgumentList& newArgs, std::string&,
       // does a target exist
       if (this->IsKeyword(keyTARGET, *arg) && argP1 != newArgs.end()) {
         this->HandlePredicate(
-          this->Makefile.FindTargetToUse(argP1->GetValue()) != CM_NULLPTR,
+          this->Makefile.FindTargetToUse(argP1->GetValue()) != nullptr,
           reducible, arg, newArgs, argP1, argP2);
       }
       // does a test exist
@@ -475,8 +475,8 @@ bool cmConditionEvaluator::HandleLevel1(cmArgumentList& newArgs, std::string&,
           this->Policy64Status != cmPolicies::WARN) {
         if (this->IsKeyword(keyTEST, *arg) && argP1 != newArgs.end()) {
           const cmTest* haveTest = this->Makefile.GetTest(argP1->c_str());
-          this->HandlePredicate(haveTest != CM_NULLPTR, reducible, arg,
-                                newArgs, argP1, argP2);
+          this->HandlePredicate(haveTest != nullptr, reducible, arg, newArgs,
+                                argP1, argP2);
         }
       } else if (this->Policy64Status == cmPolicies::WARN &&
                  this->IsKeyword(keyTEST, *arg)) {
diff --git a/Source/cmConfigure.cmake.h.in b/Source/cmConfigure.cmake.h.in
index a920bf2..00b63a5 100644
--- a/Source/cmConfigure.cmake.h.in
+++ b/Source/cmConfigure.cmake.h.in
@@ -25,7 +25,6 @@
 #cmakedefine CMake_HAVE_CXX_GNU_FALLTHROUGH
 #cmakedefine CMake_HAVE_CXX_ATTRIBUTE_FALLTHROUGH
 #cmakedefine CMake_HAVE_CXX_MAKE_UNIQUE
-#cmakedefine CMake_HAVE_CXX_NULLPTR
 #cmakedefine CMake_HAVE_CXX_OVERRIDE
 #cmakedefine CMake_HAVE_CXX_UNIQUE_PTR
 #define CMAKE_BIN_DIR "/@CMAKE_BIN_DIR@"
@@ -47,12 +46,6 @@ elif defined(CMake_HAVE_CXX_ATTRIBUTE_FALLTHROUGH)
 #define CM_FALLTHROUGH
 #endif
 
-#ifdef CMake_HAVE_CXX_NULLPTR
-#define CM_NULLPTR nullptr
-#else
-#define CM_NULLPTR 0
-#endif
-
 #ifdef CMake_HAVE_CXX_OVERRIDE
 #define CM_OVERRIDE override
 #else
diff --git a/Source/cmConnection.cxx b/Source/cmConnection.cxx
index 00cf283..4d4daf3 100644
--- a/Source/cmConnection.cxx
+++ b/Source/cmConnection.cxx
@@ -69,7 +69,7 @@ void cmEventBasedConnection::on_new_connection(uv_stream_t* stream, int status)
 
 bool cmEventBasedConnection::IsOpen() const
 {
-  return this->WriteStream != CM_NULLPTR;
+  return this->WriteStream != nullptr;
 }
 
 void cmEventBasedConnection::WriteData(const std::string& data)
diff --git a/Source/cmCoreTryCompile.cxx b/Source/cmCoreTryCompile.cxx
index 9a4abf3..206620a 100644
--- a/Source/cmCoreTryCompile.cxx
+++ b/Source/cmCoreTryCompile.cxx
@@ -102,7 +102,7 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
   }
 
   const char* sourceDirectory = argv[2].c_str();
-  const char* projectName = CM_NULLPTR;
+  const char* projectName = nullptr;
   std::string targetName;
   std::vector<std::string> cmakeFlags(1, "CMAKE_FLAGS"); // fake argv[0]
   std::vector<std::string> compileDefs;
diff --git a/Source/cmCryptoHash.cxx b/Source/cmCryptoHash.cxx
index 7995b2c..623c5e0 100644
--- a/Source/cmCryptoHash.cxx
+++ b/Source/cmCryptoHash.cxx
@@ -75,7 +75,7 @@ CM_AUTO_PTR<cmCryptoHash> cmCryptoHash::New(const char* algo)
   if (strcmp(algo, "SHA3_512") == 0) {
     return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA3_512));
   }
-  return CM_AUTO_PTR<cmCryptoHash>(CM_NULLPTR);
+  return CM_AUTO_PTR<cmCryptoHash>(nullptr);
 }
 
 bool cmCryptoHash::IntFromHexDigit(char input, char& output)
diff --git a/Source/cmCurl.h b/Source/cmCurl.h
index a2fa4b1..c879ddd 100644
--- a/Source/cmCurl.h
+++ b/Source/cmCurl.h
@@ -8,6 +8,6 @@
 #include "cm_curl.h"
 #include <string>
 
-std::string cmCurlSetCAInfo(::CURL* curl, const char* cafile = CM_NULLPTR);
+std::string cmCurlSetCAInfo(::CURL* curl, const char* cafile = nullptr);
 
 #endif
diff --git a/Source/cmCustomCommand.cxx b/Source/cmCustomCommand.cxx
index 5e377b5..e779468 100644
--- a/Source/cmCustomCommand.cxx
+++ b/Source/cmCustomCommand.cxx
@@ -30,7 +30,7 @@ cmCustomCommand::cmCustomCommand(cmMakefile const* mf,
   , Backtrace()
   , Comment(comment ? comment : "")
   , WorkingDirectory(workingDirectory ? workingDirectory : "")
-  , HaveComment(comment != CM_NULLPTR)
+  , HaveComment(comment != nullptr)
   , EscapeAllowMakeVars(false)
   , EscapeOldStyle(true)
   , CommandExpandLists(false)
@@ -62,7 +62,7 @@ const cmCustomCommandLines& cmCustomCommand::GetCommandLines() const
 
 const char* cmCustomCommand::GetComment() const
 {
-  const char* no_comment = CM_NULLPTR;
+  const char* no_comment = nullptr;
   return this->HaveComment ? this->Comment.c_str() : no_comment;
 }
 
diff --git a/Source/cmCustomCommandGenerator.cxx b/Source/cmCustomCommandGenerator.cxx
index ef46b17..189d43a 100644
--- a/Source/cmCustomCommandGenerator.cxx
+++ b/Source/cmCustomCommandGenerator.cxx
@@ -75,7 +75,7 @@ const char* cmCustomCommandGenerator::GetCrossCompilingEmulator(
   unsigned int c) const
 {
   if (!this->LG->GetMakefile()->IsOn("CMAKE_CROSSCOMPILING")) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   std::string const& argv0 = this->CommandLines[c][0];
   cmGeneratorTarget* target = this->LG->FindGeneratorTargetToUse(argv0);
@@ -83,7 +83,7 @@ const char* cmCustomCommandGenerator::GetCrossCompilingEmulator(
       !target->IsImported()) {
     return target->GetProperty("CROSSCOMPILING_EMULATOR");
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 const char* cmCustomCommandGenerator::GetArgv0Location(unsigned int c) const
@@ -96,7 +96,7 @@ const char* cmCustomCommandGenerator::GetArgv0Location(unsigned int c) const
        !this->LG->GetMakefile()->IsOn("CMAKE_CROSSCOMPILING"))) {
     return target->GetLocation(this->Config);
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 std::string cmCustomCommandGenerator::GetCommand(unsigned int c) const
@@ -140,14 +140,13 @@ void cmCustomCommandGenerator::AppendArguments(unsigned int c,
                                                std::string& cmd) const
 {
   unsigned int offset = 1;
-  if (this->GetCrossCompilingEmulator(c) != CM_NULLPTR) {
+  if (this->GetCrossCompilingEmulator(c) != nullptr) {
     offset = 0;
   }
   cmCustomCommandLine const& commandLine = this->CommandLines[c];
   for (unsigned int j = offset; j < commandLine.size(); ++j) {
     std::string arg;
-    if (const char* location =
-          j == 0 ? this->GetArgv0Location(c) : CM_NULLPTR) {
+    if (const char* location = j == 0 ? this->GetArgv0Location(c) : nullptr) {
       // GetCommand returned the emulator instead of the argv0 location,
       // so transform the latter now.
       arg = location;
diff --git a/Source/cmDefinitions.cxx b/Source/cmDefinitions.cxx
index 7aa7641..0a95e8e 100644
--- a/Source/cmDefinitions.cxx
+++ b/Source/cmDefinitions.cxx
@@ -35,7 +35,7 @@ const char* cmDefinitions::Get(const std::string& key, StackIter begin,
                                StackIter end)
 {
   Def const& def = cmDefinitions::GetInternal(key, begin, end, false);
-  return def.Exists ? def.c_str() : CM_NULLPTR;
+  return def.Exists ? def.c_str() : nullptr;
 }
 
 void cmDefinitions::Raise(const std::string& key, StackIter begin,
diff --git a/Source/cmDepends.cxx b/Source/cmDepends.cxx
index c898d12..a0775b3 100644
--- a/Source/cmDepends.cxx
+++ b/Source/cmDepends.cxx
@@ -18,7 +18,7 @@ cmDepends::cmDepends(cmLocalGenerator* lg, const char* targetDir)
   : CompileDirectory()
   , LocalGenerator(lg)
   , Verbose(false)
-  , FileComparison(CM_NULLPTR)
+  , FileComparison(nullptr)
   , TargetDirectory(targetDir)
   , MaxPath(16384)
   , Dependee(new char[MaxPath])
@@ -125,7 +125,7 @@ bool cmDepends::CheckDependencies(
   // regenerated.
   bool okay = true;
   bool dependerExists = false;
-  DependencyVector* currentDependencies = CM_NULLPTR;
+  DependencyVector* currentDependencies = nullptr;
 
   while (internalDepends.getline(this->Dependee, this->MaxPath)) {
     if (this->Dependee[0] == 0 || this->Dependee[0] == '#' ||
@@ -167,7 +167,7 @@ bool cmDepends::CheckDependencies(
     bool regenerate = false;
     const char* dependee = this->Dependee + 1;
     const char* depender = this->Depender;
-    if (currentDependencies != CM_NULLPTR) {
+    if (currentDependencies != nullptr) {
       currentDependencies->push_back(dependee);
     }
 
@@ -227,9 +227,9 @@ bool cmDepends::CheckDependencies(
 
       // Remove the information of this depender from the map, it needs
       // to be rescanned
-      if (currentDependencies != CM_NULLPTR) {
+      if (currentDependencies != nullptr) {
         validDeps.erase(this->Depender);
-        currentDependencies = CM_NULLPTR;
+        currentDependencies = nullptr;
       }
 
       // Remove the depender to be sure it is rebuilt.
@@ -246,7 +246,7 @@ bool cmDepends::CheckDependencies(
 void cmDepends::SetIncludePathFromLanguage(const std::string& lang)
 {
   // Look for the new per "TARGET_" variant first:
-  const char* includePath = CM_NULLPTR;
+  const char* includePath = nullptr;
   std::string includePathVar = "CMAKE_";
   includePathVar += lang;
   includePathVar += "_TARGET_INCLUDE_PATH";
diff --git a/Source/cmDepends.h b/Source/cmDepends.h
index b33feb9..deeb663 100644
--- a/Source/cmDepends.h
+++ b/Source/cmDepends.h
@@ -29,7 +29,7 @@ class cmDepends
 public:
   /** Instances need to know the build directory name and the relative
       path from the build directory to the target file.  */
-  cmDepends(cmLocalGenerator* lg = CM_NULLPTR, const char* targetDir = "");
+  cmDepends(cmLocalGenerator* lg = nullptr, const char* targetDir = "");
 
   /** at what level will the compile be done from */
   void SetCompileDirectory(const char* dir) { this->CompileDirectory = dir; }
diff --git a/Source/cmDependsC.cxx b/Source/cmDependsC.cxx
index 2c464cc..39810f1 100644
--- a/Source/cmDependsC.cxx
+++ b/Source/cmDependsC.cxx
@@ -20,7 +20,7 @@
 #define INCLUDE_REGEX_TRANSFORM_MARKER "#IncludeRegexTransform: "
 
 cmDependsC::cmDependsC()
-  : ValidDeps(CM_NULLPTR)
+  : ValidDeps(nullptr)
 {
 }
 
@@ -96,7 +96,7 @@ bool cmDependsC::WriteDependencies(const std::set<std::string>& sources,
   std::set<std::string> dependencies;
   bool haveDeps = false;
 
-  if (this->ValidDeps != CM_NULLPTR) {
+  if (this->ValidDeps != nullptr) {
     std::map<std::string, DependencyVector>::const_iterator tmpIt =
       this->ValidDeps->find(obj);
     if (tmpIt != this->ValidDeps->end()) {
@@ -259,12 +259,12 @@ void cmDependsC::ReadCacheFile()
   }
 
   std::string line;
-  cmIncludeLines* cacheEntry = CM_NULLPTR;
+  cmIncludeLines* cacheEntry = nullptr;
   bool haveFileName = false;
 
   while (cmSystemTools::GetLineFromStream(fin, line)) {
     if (line.empty()) {
-      cacheEntry = CM_NULLPTR;
+      cacheEntry = nullptr;
       haveFileName = false;
       continue;
     }
@@ -302,7 +302,7 @@ void cmDependsC::ReadCacheFile()
           }
         }
       }
-    } else if (cacheEntry != CM_NULLPTR) {
+    } else if (cacheEntry != nullptr) {
       UnscannedEntry entry;
       entry.FileName = line;
       if (cmSystemTools::GetLineFromStream(fin, line)) {
diff --git a/Source/cmDependsFortran.cxx b/Source/cmDependsFortran.cxx
index 8b05fab..e149a19 100644
--- a/Source/cmDependsFortran.cxx
+++ b/Source/cmDependsFortran.cxx
@@ -52,7 +52,7 @@ public:
 };
 
 cmDependsFortran::cmDependsFortran()
-  : Internal(CM_NULLPTR)
+  : Internal(nullptr)
 {
 }
 
diff --git a/Source/cmDependsJavaParserHelper.cxx b/Source/cmDependsJavaParserHelper.cxx
index 7bc91bf..179c44a 100644
--- a/Source/cmDependsJavaParserHelper.cxx
+++ b/Source/cmDependsJavaParserHelper.cxx
@@ -57,7 +57,7 @@ void cmDependsJavaParserHelper::DeallocateParserType(char** pt)
   if (!*pt) {
     return;
   }
-  *pt = CM_NULLPTR;
+  *pt = nullptr;
   this->UnionsAvailable--;
 }
 
@@ -158,13 +158,13 @@ void cmDependsJavaParserHelper::PrepareElement(
   cmDependsJavaParserHelper::ParserType* me)
 {
   // Inititalize self
-  me->str = CM_NULLPTR;
+  me->str = nullptr;
 }
 
 void cmDependsJavaParserHelper::AllocateParserType(
   cmDependsJavaParserHelper::ParserType* pt, const char* str, int len)
 {
-  pt->str = CM_NULLPTR;
+  pt->str = nullptr;
   if (len == 0) {
     len = (int)strlen(str);
   }
@@ -224,7 +224,7 @@ std::vector<std::string> cmDependsJavaParserHelper::GetFilesProduced()
   std::vector<CurrentClass>::const_iterator it;
   for (it = toplevel.NestedClasses.begin(); it != toplevel.NestedClasses.end();
        ++it) {
-    it->AddFileNamesForPrinting(&files, CM_NULLPTR, "$");
+    it->AddFileNamesForPrinting(&files, nullptr, "$");
   }
   return files;
 }
@@ -324,7 +324,7 @@ void cmDependsJavaParserHelper::Error(const char* str)
 void cmDependsJavaParserHelper::UpdateCombine(const char* str1,
                                               const char* str2)
 {
-  if (this->CurrentCombine == "" && str1 != CM_NULLPTR) {
+  if (this->CurrentCombine == "" && str1 != nullptr) {
     this->CurrentCombine = str1;
   }
   this->CurrentCombine += ".";
diff --git a/Source/cmDocumentation.cxx b/Source/cmDocumentation.cxx
index c6286b3..4af44b4 100644
--- a/Source/cmDocumentation.cxx
+++ b/Source/cmDocumentation.cxx
@@ -41,12 +41,12 @@ static const char* cmDocumentationStandardOptions[][2] = {
   { "--help-variable-list [<f>]",
     "List variables with help available and exit." },
   { "--help-variables [<f>]", "Print cmake-variables manual and exit." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationGeneratorsHeader[][2] = {
-  { CM_NULLPTR, "The following generators are available on this platform:" },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "The following generators are available on this platform:" },
+  { nullptr, nullptr }
 };
 
 cmDocumentation::cmDocumentation()
@@ -403,7 +403,7 @@ void cmDocumentation::SetSections(
 
 void cmDocumentation::PrependSection(const char* name, const char* docs[][2])
 {
-  cmDocumentationSection* sec = CM_NULLPTR;
+  cmDocumentationSection* sec = nullptr;
   if (this->AllSections.find(name) == this->AllSections.end()) {
     sec =
       new cmDocumentationSection(name, cmSystemTools::UpperCase(name).c_str());
@@ -417,7 +417,7 @@ void cmDocumentation::PrependSection(const char* name, const char* docs[][2])
 void cmDocumentation::PrependSection(const char* name,
                                      std::vector<cmDocumentationEntry>& docs)
 {
-  cmDocumentationSection* sec = CM_NULLPTR;
+  cmDocumentationSection* sec = nullptr;
   if (this->AllSections.find(name) == this->AllSections.end()) {
     sec =
       new cmDocumentationSection(name, cmSystemTools::UpperCase(name).c_str());
@@ -430,7 +430,7 @@ void cmDocumentation::PrependSection(const char* name,
 
 void cmDocumentation::AppendSection(const char* name, const char* docs[][2])
 {
-  cmDocumentationSection* sec = CM_NULLPTR;
+  cmDocumentationSection* sec = nullptr;
   if (this->AllSections.find(name) == this->AllSections.end()) {
     sec =
       new cmDocumentationSection(name, cmSystemTools::UpperCase(name).c_str());
@@ -444,7 +444,7 @@ void cmDocumentation::AppendSection(const char* name, const char* docs[][2])
 void cmDocumentation::AppendSection(const char* name,
                                     std::vector<cmDocumentationEntry>& docs)
 {
-  cmDocumentationSection* sec = CM_NULLPTR;
+  cmDocumentationSection* sec = nullptr;
   if (this->AllSections.find(name) == this->AllSections.end()) {
     sec =
       new cmDocumentationSection(name, cmSystemTools::UpperCase(name).c_str());
diff --git a/Source/cmDocumentation.h b/Source/cmDocumentation.h
index 2866fef..76b1fc5 100644
--- a/Source/cmDocumentation.h
+++ b/Source/cmDocumentation.h
@@ -32,7 +32,7 @@ public:
    * help arguments.
    */
   bool CheckOptions(int argc, const char* const* argv,
-                    const char* exitOpt = CM_NULLPTR);
+                    const char* exitOpt = nullptr);
 
   /**
    * Print help requested on the command line.  Call after
diff --git a/Source/cmDynamicLoader.cxx b/Source/cmDynamicLoader.cxx
index 7fbe75c..2fe0360 100644
--- a/Source/cmDynamicLoader.cxx
+++ b/Source/cmDynamicLoader.cxx
@@ -22,7 +22,7 @@ private:
   static cmDynamicLoaderCache* Instance;
 };
 
-cmDynamicLoaderCache* cmDynamicLoaderCache::Instance = CM_NULLPTR;
+cmDynamicLoaderCache* cmDynamicLoaderCache::Instance = nullptr;
 
 cmDynamicLoaderCache::~cmDynamicLoaderCache()
 {
@@ -71,7 +71,7 @@ void cmDynamicLoaderCache::FlushCache()
     cmsys::DynamicLoader::CloseLibrary(it->second);
   }
   delete cmDynamicLoaderCache::Instance;
-  cmDynamicLoaderCache::Instance = CM_NULLPTR;
+  cmDynamicLoaderCache::Instance = nullptr;
 }
 
 cmDynamicLoaderCache* cmDynamicLoaderCache::GetInstance()
diff --git a/Source/cmELF.cxx b/Source/cmELF.cxx
index fc97bf3..e2655e7 100644
--- a/Source/cmELF.cxx
+++ b/Source/cmELF.cxx
@@ -594,7 +594,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
     if (dssi->second.Position > 0) {
       return &dssi->second;
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Create an entry for this tag.  Assume it is missing until found.
@@ -605,14 +605,14 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
 
   // Try reading the dynamic section.
   if (!this->LoadDynamicSection()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Get the string table referenced by the DYNAMIC section.
   ELF_Shdr const& sec = this->SectionHeaders[this->DynamicSectionIndex];
   if (sec.sh_link >= this->SectionHeaders.size()) {
     this->SetErrorMessage("Section DYNAMIC has invalid string table index.");
-    return CM_NULLPTR;
+    return nullptr;
   }
   ELF_Shdr const& strtab = this->SectionHeaders[sec.sh_link];
 
@@ -627,7 +627,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
       if (dyn.d_un.d_val >= strtab.sh_size) {
         this->SetErrorMessage("Section DYNAMIC references string beyond "
                               "the end of its string section.");
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       // Seek to the position reported by the entry.
@@ -656,7 +656,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
       if (!this->Stream) {
         this->SetErrorMessage("Dynamic section specifies unreadable RPATH.");
         se.Value = "";
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       // The value has been read successfully.  Report it.
@@ -667,7 +667,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
       return &se;
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 //============================================================================
@@ -683,7 +683,7 @@ const long cmELF::TagMipsRldMapRel = 0;
 #endif
 
 cmELF::cmELF(const char* fname)
-  : Internal(CM_NULLPTR)
+  : Internal(nullptr)
 {
   // Try to open the file.
   CM_AUTO_PTR<cmsys::ifstream> fin(new cmsys::ifstream(fname));
@@ -811,7 +811,7 @@ cmELF::StringEntry const* cmELF::GetSOName()
       this->Internal->GetFileType() == cmELF::FileTypeSharedLibrary) {
     return this->Internal->GetSOName();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmELF::StringEntry const* cmELF::GetRPath()
@@ -821,7 +821,7 @@ cmELF::StringEntry const* cmELF::GetRPath()
        this->Internal->GetFileType() == cmELF::FileTypeSharedLibrary)) {
     return this->Internal->GetRPath();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmELF::StringEntry const* cmELF::GetRunPath()
@@ -831,7 +831,7 @@ cmELF::StringEntry const* cmELF::GetRunPath()
        this->Internal->GetFileType() == cmELF::FileTypeSharedLibrary)) {
     return this->Internal->GetRunPath();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmELF::PrintInfo(std::ostream& os) const
diff --git a/Source/cmExecProgramCommand.cxx b/Source/cmExecProgramCommand.cxx
index fcc3c45..3c39816 100644
--- a/Source/cmExecProgramCommand.cxx
+++ b/Source/cmExecProgramCommand.cxx
@@ -86,7 +86,7 @@ bool cmExecProgramCommand::InitialPass(std::vector<std::string> const& args,
                                               args[1].c_str(), verbose);
   } else {
     result = cmExecProgramCommand::RunCommand(command.c_str(), output, retVal,
-                                              CM_NULLPTR, verbose);
+                                              nullptr, verbose);
   }
   if (!result) {
     retVal = -1;
@@ -205,7 +205,7 @@ bool cmExecProgramCommand::RunCommand(const char* command, std::string& output,
   }
   fflush(stdout);
   fflush(stderr);
-  const char* cmd[] = { "/bin/sh", "-c", command, CM_NULLPTR };
+  const char* cmd[] = { "/bin/sh", "-c", command, nullptr };
   cmsysProcess_SetCommand(cp, cmd);
 #endif
 
@@ -217,7 +217,7 @@ bool cmExecProgramCommand::RunCommand(const char* command, std::string& output,
   int p;
   cmProcessOutput processOutput(encoding);
   std::string strdata;
-  while ((p = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR), p)) {
+  while ((p = cmsysProcess_WaitForData(cp, &data, &length, nullptr), p)) {
     if (p == cmsysProcess_Pipe_STDOUT || p == cmsysProcess_Pipe_STDERR) {
       if (verbose) {
         processOutput.DecodeText(data, length, strdata);
@@ -235,7 +235,7 @@ bool cmExecProgramCommand::RunCommand(const char* command, std::string& output,
   }
 
   // All output has been read.  Wait for the process to exit.
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   processOutput.DecodeText(output, output);
 
   // Check the result of running the process.
diff --git a/Source/cmExecProgramCommand.h b/Source/cmExecProgramCommand.h
index 6463c4d..9f34799 100644
--- a/Source/cmExecProgramCommand.h
+++ b/Source/cmExecProgramCommand.h
@@ -38,8 +38,7 @@ public:
 
 private:
   static bool RunCommand(const char* command, std::string& output, int& retVal,
-                         const char* directory = CM_NULLPTR,
-                         bool verbose = true,
+                         const char* directory = nullptr, bool verbose = true,
                          Encoding encoding = cmProcessOutput::Auto);
 };
 
diff --git a/Source/cmExecuteProcessCommand.cxx b/Source/cmExecuteProcessCommand.cxx
index 435adca..0c76ce0 100644
--- a/Source/cmExecuteProcessCommand.cxx
+++ b/Source/cmExecuteProcessCommand.cxx
@@ -176,7 +176,7 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
       return false;
     }
     // Add the null terminating pointer to the command argument list.
-    cmds[i].push_back(CM_NULLPTR);
+    cmds[i].push_back(nullptr);
   }
 
   // Parse the timeout string.
@@ -244,7 +244,7 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
   int p;
   cmProcessOutput processOutput(encoding);
   std::string strdata;
-  while ((p = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR), p)) {
+  while ((p = cmsysProcess_WaitForData(cp, &data, &length, nullptr), p)) {
     // Put the output in the right place.
     if (p == cmsysProcess_Pipe_STDOUT && !output_quiet) {
       if (output_variable.empty()) {
@@ -276,7 +276,7 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
   }
 
   // All output has been read.  Wait for the process to exit.
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   processOutput.DecodeText(tempOutput, tempOutput);
   processOutput.DecodeText(tempError, tempError);
 
diff --git a/Source/cmExportBuildAndroidMKGenerator.cxx b/Source/cmExportBuildAndroidMKGenerator.cxx
index b443fb0..8662e8a 100644
--- a/Source/cmExportBuildAndroidMKGenerator.cxx
+++ b/Source/cmExportBuildAndroidMKGenerator.cxx
@@ -21,8 +21,8 @@
 
 cmExportBuildAndroidMKGenerator::cmExportBuildAndroidMKGenerator()
 {
-  this->LG = CM_NULLPTR;
-  this->ExportSet = CM_NULLPTR;
+  this->LG = nullptr;
+  this->ExportSet = nullptr;
 }
 
 void cmExportBuildAndroidMKGenerator::GenerateImportHeaderCode(
diff --git a/Source/cmExportBuildFileGenerator.cxx b/Source/cmExportBuildFileGenerator.cxx
index a1c424a..1463c52 100644
--- a/Source/cmExportBuildFileGenerator.cxx
+++ b/Source/cmExportBuildFileGenerator.cxx
@@ -26,8 +26,8 @@ class cmSourceFile;
 
 cmExportBuildFileGenerator::cmExportBuildFileGenerator()
 {
-  this->LG = CM_NULLPTR;
-  this->ExportSet = CM_NULLPTR;
+  this->LG = nullptr;
+  this->ExportSet = nullptr;
 }
 
 void cmExportBuildFileGenerator::Compute(cmLocalGenerator* lg)
diff --git a/Source/cmExportCommand.cxx b/Source/cmExportCommand.cxx
index 38cd511..64baa90 100644
--- a/Source/cmExportCommand.cxx
+++ b/Source/cmExportCommand.cxx
@@ -35,7 +35,7 @@ cmExportCommand::cmExportCommand()
   , ExportOld(&Helper, "EXPORT_LINK_INTERFACE_LIBRARIES", &ArgumentGroup)
   , AndroidMKFile(&Helper, "ANDROID_MK")
 {
-  this->ExportSet = CM_NULLPTR;
+  this->ExportSet = nullptr;
 }
 
 // cmExportCommand
@@ -51,10 +51,10 @@ bool cmExportCommand::InitialPass(std::vector<std::string> const& args,
     return this->HandlePackage(args);
   }
   if (args[0] == "EXPORT") {
-    this->ExportSetName.Follows(CM_NULLPTR);
+    this->ExportSetName.Follows(nullptr);
     this->ArgumentGroup.Follows(&this->ExportSetName);
   } else {
-    this->Targets.Follows(CM_NULLPTR);
+    this->Targets.Follows(nullptr);
     this->ArgumentGroup.Follows(&this->Targets);
   }
 
@@ -186,7 +186,7 @@ bool cmExportCommand::InitialPass(std::vector<std::string> const& args,
   }
 
   // Setup export file generation.
-  cmExportBuildFileGenerator* ebfg = CM_NULLPTR;
+  cmExportBuildFileGenerator* ebfg = nullptr;
   if (android) {
     ebfg = new cmExportBuildAndroidMKGenerator;
   } else {
diff --git a/Source/cmExportTryCompileFileGenerator.cxx b/Source/cmExportTryCompileFileGenerator.cxx
index cd0a7e6..54e0e71 100644
--- a/Source/cmExportTryCompileFileGenerator.cxx
+++ b/Source/cmExportTryCompileFileGenerator.cxx
@@ -62,8 +62,8 @@ std::string cmExportTryCompileFileGenerator::FindTargets(
 
   cmGeneratorExpression ge;
 
-  cmGeneratorExpressionDAGChecker dagChecker(tgt->GetName(), propName,
-                                             CM_NULLPTR, CM_NULLPTR);
+  cmGeneratorExpressionDAGChecker dagChecker(tgt->GetName(), propName, nullptr,
+                                             nullptr);
 
   CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
 
diff --git a/Source/cmExprParserHelper.cxx b/Source/cmExprParserHelper.cxx
index c3f026a..d23b41b 100644
--- a/Source/cmExprParserHelper.cxx
+++ b/Source/cmExprParserHelper.cxx
@@ -14,7 +14,7 @@ int cmExpr_yyparse(yyscan_t yyscanner);
 cmExprParserHelper::cmExprParserHelper()
 {
   this->FileLine = -1;
-  this->FileName = CM_NULLPTR;
+  this->FileName = nullptr;
 }
 
 cmExprParserHelper::~cmExprParserHelper()
diff --git a/Source/cmExtraCodeBlocksGenerator.cxx b/Source/cmExtraCodeBlocksGenerator.cxx
index e7a8975..2054605 100644
--- a/Source/cmExtraCodeBlocksGenerator.cxx
+++ b/Source/cmExtraCodeBlocksGenerator.cxx
@@ -289,7 +289,7 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
 
   xml.StartElement("Build");
 
-  this->AppendTarget(xml, "all", CM_NULLPTR, make.c_str(), lgs[0],
+  this->AppendTarget(xml, "all", nullptr, make.c_str(), lgs[0],
                      compiler.c_str(), makeArgs);
 
   // add all executable and library targets and some of the GLOBAL
@@ -307,7 +307,7 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
           // not from the subdirs
           if (strcmp((*lg)->GetCurrentBinaryDirectory(),
                      (*lg)->GetBinaryDirectory()) == 0) {
-            this->AppendTarget(xml, targetName, CM_NULLPTR, make.c_str(), *lg,
+            this->AppendTarget(xml, targetName, nullptr, make.c_str(), *lg,
                                compiler.c_str(), makeArgs);
           }
         } break;
@@ -323,7 +323,7 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
             break;
           }
 
-          this->AppendTarget(xml, targetName, CM_NULLPTR, make.c_str(), *lg,
+          this->AppendTarget(xml, targetName, nullptr, make.c_str(), *lg,
                              compiler.c_str(), makeArgs);
           break;
         case cmStateEnums::EXECUTABLE:
@@ -517,7 +517,7 @@ void cmExtraCodeBlocksGenerator::AppendTarget(
   xml.StartElement("Target");
   xml.Attribute("title", targetName);
 
-  if (target != CM_NULLPTR) {
+  if (target != nullptr) {
     int cbTargetType = this->GetCBTargetType(target);
     std::string workingDir = lg->GetCurrentBinaryDirectory();
     if (target->GetType() == cmStateEnums::EXECUTABLE) {
@@ -525,12 +525,12 @@ void cmExtraCodeBlocksGenerator::AppendTarget(
       // set the working directory to this dir.
       const char* runtimeOutputDir =
         makefile->GetDefinition("CMAKE_RUNTIME_OUTPUT_DIRECTORY");
-      if (runtimeOutputDir != CM_NULLPTR) {
+      if (runtimeOutputDir != nullptr) {
         workingDir = runtimeOutputDir;
       } else {
         const char* executableOutputDir =
           makefile->GetDefinition("EXECUTABLE_OUTPUT_PATH");
-        if (executableOutputDir != CM_NULLPTR) {
+        if (executableOutputDir != nullptr) {
           workingDir = executableOutputDir;
         }
       }
diff --git a/Source/cmExtraEclipseCDT4Generator.cxx b/Source/cmExtraEclipseCDT4Generator.cxx
index 473af37..684d1f5 100644
--- a/Source/cmExtraEclipseCDT4Generator.cxx
+++ b/Source/cmExtraEclipseCDT4Generator.cxx
@@ -222,17 +222,17 @@ void cmExtraEclipseCDT4Generator::AddEnvVar(std::ostream& out,
 
   // now we have both, decide which one to use
   std::string valueToUse;
-  if (!envVarSet && cacheValue == CM_NULLPTR) {
+  if (!envVarSet && cacheValue == nullptr) {
     // nothing known, do nothing
     valueToUse = "";
-  } else if (envVarSet && cacheValue == CM_NULLPTR) {
+  } else if (envVarSet && cacheValue == nullptr) {
     // The variable is in the env, but not in the cache. Use it and put it
     // in the cache
     valueToUse = envVarValue;
     mf->AddCacheDefinition(cacheEntryName, valueToUse.c_str(),
                            cacheEntryName.c_str(), cmStateEnums::STRING, true);
     mf->GetCMakeInstance()->SaveCache(lg->GetBinaryDirectory());
-  } else if (!envVarSet && cacheValue != CM_NULLPTR) {
+  } else if (!envVarSet && cacheValue != nullptr) {
     // It is already in the cache, but not in the env, so use it from the cache
     valueToUse = cacheValue;
   } else {
diff --git a/Source/cmExtraEclipseCDT4Generator.h b/Source/cmExtraEclipseCDT4Generator.h
index 1380d18..a6a0c59 100644
--- a/Source/cmExtraEclipseCDT4Generator.h
+++ b/Source/cmExtraEclipseCDT4Generator.h
@@ -67,7 +67,7 @@ private:
                            const std::string& make,
                            const std::string& makeArguments,
                            const std::string& path, const char* prefix = "",
-                           const char* makeTarget = CM_NULLPTR);
+                           const char* makeTarget = nullptr);
   static void AppendScannerProfile(
     cmXMLWriter& xml, const std::string& profileID, bool openActionEnabled,
     const std::string& openActionFilePath, bool pParserEnabled,
diff --git a/Source/cmExtraKateGenerator.cxx b/Source/cmExtraKateGenerator.cxx
index e366774..a75a400 100644
--- a/Source/cmExtraKateGenerator.cxx
+++ b/Source/cmExtraKateGenerator.cxx
@@ -135,9 +135,9 @@ void cmExtraKateGenerator::WriteTargets(const cmLocalGenerator* lg,
             if (targetName == "edit_cache") {
               const char* editCommand =
                 (*it)->GetMakefile()->GetDefinition("CMAKE_EDIT_COMMAND");
-              if (editCommand == CM_NULLPTR) {
+              if (editCommand == nullptr) {
                 insertTarget = false;
-              } else if (strstr(editCommand, "ccmake") != CM_NULLPTR) {
+              } else if (strstr(editCommand, "ccmake") != nullptr) {
                 insertTarget = false;
               }
             }
diff --git a/Source/cmExtraSublimeTextGenerator.cxx b/Source/cmExtraSublimeTextGenerator.cxx
index a62a546..5bb424b 100644
--- a/Source/cmExtraSublimeTextGenerator.cxx
+++ b/Source/cmExtraSublimeTextGenerator.cxx
@@ -174,9 +174,9 @@ void cmExtraSublimeTextGenerator::AppendAllTargets(
   std::string make = mf->GetRequiredDefinition("CMAKE_MAKE_PROGRAM");
   std::string compiler;
   if (!lgs.empty()) {
-    this->AppendTarget(fout, "all", lgs[0], CM_NULLPTR, make.c_str(), mf,
+    this->AppendTarget(fout, "all", lgs[0], nullptr, make.c_str(), mf,
                        compiler.c_str(), sourceFileFlags, true);
-    this->AppendTarget(fout, "clean", lgs[0], CM_NULLPTR, make.c_str(), mf,
+    this->AppendTarget(fout, "clean", lgs[0], nullptr, make.c_str(), mf,
                        compiler.c_str(), sourceFileFlags, false);
   }
 
@@ -196,7 +196,7 @@ void cmExtraSublimeTextGenerator::AppendAllTargets(
           // not from the subdirs
           if (strcmp((*lg)->GetCurrentBinaryDirectory(),
                      (*lg)->GetBinaryDirectory()) == 0) {
-            this->AppendTarget(fout, targetName, *lg, CM_NULLPTR, make.c_str(),
+            this->AppendTarget(fout, targetName, *lg, nullptr, make.c_str(),
                                makefile, compiler.c_str(), sourceFileFlags,
                                false);
           }
@@ -213,7 +213,7 @@ void cmExtraSublimeTextGenerator::AppendAllTargets(
             break;
           }
 
-          this->AppendTarget(fout, targetName, *lg, CM_NULLPTR, make.c_str(),
+          this->AppendTarget(fout, targetName, *lg, nullptr, make.c_str(),
                              makefile, compiler.c_str(), sourceFileFlags,
                              false);
           break;
@@ -245,7 +245,7 @@ void cmExtraSublimeTextGenerator::AppendTarget(
   MapSourceFileFlags& sourceFileFlags, bool firstTarget)
 {
 
-  if (target != CM_NULLPTR) {
+  if (target != nullptr) {
     std::vector<cmSourceFile*> sourceFiles;
     target->GetSourceFiles(sourceFiles,
                            makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
diff --git a/Source/cmFLTKWrapUICommand.cxx b/Source/cmFLTKWrapUICommand.cxx
index ff78f52..03d1ad1 100644
--- a/Source/cmFLTKWrapUICommand.cxx
+++ b/Source/cmFLTKWrapUICommand.cxx
@@ -72,8 +72,8 @@ bool cmFLTKWrapUICommand::InitialPass(std::vector<std::string> const& args,
 
       // Add command for generating the .h and .cxx files
       std::string no_main_dependency;
-      const char* no_comment = CM_NULLPTR;
-      const char* no_working_dir = CM_NULLPTR;
+      const char* no_comment = nullptr;
+      const char* no_working_dir = nullptr;
       this->Makefile->AddCustomCommandToOutput(
         cxxres, depends, no_main_dependency, commandLines, no_comment,
         no_working_dir);
diff --git a/Source/cmFileCommand.cxx b/Source/cmFileCommand.cxx
index b769a56..b68d4c0 100644
--- a/Source/cmFileCommand.cxx
+++ b/Source/cmFileCommand.cxx
@@ -269,17 +269,17 @@ bool cmFileCommand::HandleReadCommand(std::vector<std::string> const& args)
   cmCommandArgumentGroup group;
 
   cmCAString readArg(&argHelper, "READ");
-  cmCAString fileNameArg(&argHelper, CM_NULLPTR);
-  cmCAString resultArg(&argHelper, CM_NULLPTR);
+  cmCAString fileNameArg(&argHelper, nullptr);
+  cmCAString resultArg(&argHelper, nullptr);
 
   cmCAString offsetArg(&argHelper, "OFFSET", &group);
   cmCAString limitArg(&argHelper, "LIMIT", &group);
   cmCAEnabler hexOutputArg(&argHelper, "HEX", &group);
-  readArg.Follows(CM_NULLPTR);
+  readArg.Follows(nullptr);
   fileNameArg.Follows(&readArg);
   resultArg.Follows(&fileNameArg);
   group.Follows(&resultArg);
-  argHelper.Parse(&args, CM_NULLPTR);
+  argHelper.Parse(&args, nullptr);
 
   std::string fileName = fileNameArg.GetString();
   if (!cmsys::SystemTools::FileIsFullPath(fileName.c_str())) {
@@ -940,9 +940,9 @@ bool cmFileCommand::HandleDifferentCommand(
    */
 
   // Evaluate arguments.
-  const char* file_lhs = CM_NULLPTR;
-  const char* file_rhs = CM_NULLPTR;
-  const char* var = CM_NULLPTR;
+  const char* file_lhs = nullptr;
+  const char* file_rhs = nullptr;
+  const char* var = nullptr;
   enum Doing
   {
     DoingNone,
@@ -997,7 +997,7 @@ struct cmFileCopier
     , MatchlessFiles(true)
     , FilePermissions(0)
     , DirPermissions(0)
-    , CurrentMatchRule(CM_NULLPTR)
+    , CurrentMatchRule(nullptr)
     , UseGivenPermissionsFile(false)
     , UseGivenPermissionsDir(false)
     , UseSourcePermissions(true)
@@ -2043,9 +2043,9 @@ bool cmFileCommand::HandleRPathChangeCommand(
   std::vector<std::string> const& args)
 {
   // Evaluate arguments.
-  const char* file = CM_NULLPTR;
-  const char* oldRPath = CM_NULLPTR;
-  const char* newRPath = CM_NULLPTR;
+  const char* file = nullptr;
+  const char* oldRPath = nullptr;
+  const char* newRPath = nullptr;
   enum Doing
   {
     DoingNone,
@@ -2133,7 +2133,7 @@ bool cmFileCommand::HandleRPathRemoveCommand(
   std::vector<std::string> const& args)
 {
   // Evaluate arguments.
-  const char* file = CM_NULLPTR;
+  const char* file = nullptr;
   enum Doing
   {
     DoingNone,
@@ -2197,8 +2197,8 @@ bool cmFileCommand::HandleRPathCheckCommand(
   std::vector<std::string> const& args)
 {
   // Evaluate arguments.
-  const char* file = CM_NULLPTR;
-  const char* rpath = CM_NULLPTR;
+  const char* file = nullptr;
+  const char* rpath = nullptr;
   enum Doing
   {
     DoingNone,
@@ -2256,16 +2256,16 @@ bool cmFileCommand::HandleReadElfCommand(std::vector<std::string> const& args)
   cmCommandArgumentGroup group;
 
   cmCAString readArg(&argHelper, "READ_ELF");
-  cmCAString fileNameArg(&argHelper, CM_NULLPTR);
+  cmCAString fileNameArg(&argHelper, nullptr);
 
   cmCAString rpathArg(&argHelper, "RPATH", &group);
   cmCAString runpathArg(&argHelper, "RUNPATH", &group);
   cmCAString errorArg(&argHelper, "CAPTURE_ERROR", &group);
 
-  readArg.Follows(CM_NULLPTR);
+  readArg.Follows(nullptr);
   fileNameArg.Follows(&readArg);
   group.Follows(&fileNameArg);
-  argHelper.Parse(&args, CM_NULLPTR);
+  argHelper.Parse(&args, nullptr);
 
   if (!cmSystemTools::FileExists(fileNameArg.GetString(), true)) {
     std::ostringstream e;
@@ -2596,7 +2596,7 @@ public:
     }
   }
 
-  void release() { this->Easy = CM_NULLPTR; }
+  void release() { this->Easy = nullptr; }
 
 private:
   ::CURL* Easy;
@@ -2881,7 +2881,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
     check_curl_result(res, "DOWNLOAD cannot set user password: ");
   }
 
-  struct curl_slist* headers = CM_NULLPTR;
+  struct curl_slist* headers = nullptr;
   for (std::vector<std::string>::const_iterator h = curl_headers.begin();
        h != curl_headers.end(); ++h) {
     headers = ::curl_slist_append(headers, h->c_str());
@@ -3139,7 +3139,7 @@ bool cmFileCommand::HandleUploadCommand(std::vector<std::string> const& args)
     check_curl_result(res, "UPLOAD cannot set user password: ");
   }
 
-  struct curl_slist* headers = CM_NULLPTR;
+  struct curl_slist* headers = nullptr;
   for (std::vector<std::string>::const_iterator h = curl_headers.begin();
        h != curl_headers.end(); ++h) {
     headers = ::curl_slist_append(headers, h->c_str());
@@ -3163,7 +3163,7 @@ bool cmFileCommand::HandleUploadCommand(std::vector<std::string> const& args)
   ::curl_global_cleanup();
 
   fclose(fin);
-  fin = CM_NULLPTR;
+  fin = nullptr;
 
   if (!logVar.empty()) {
     std::string log;
diff --git a/Source/cmFindBase.cxx b/Source/cmFindBase.cxx
index 10c6fe4..c7d4a46 100644
--- a/Source/cmFindBase.cxx
+++ b/Source/cmFindBase.cxx
@@ -335,7 +335,7 @@ bool cmFindBase::CheckForVariableInCache()
     cmState* state = this->Makefile->GetState();
     const char* cacheEntry = state->GetCacheEntryValue(this->VariableName);
     bool found = !cmSystemTools::IsNOTFOUND(cacheValue);
-    bool cached = cacheEntry != CM_NULLPTR;
+    bool cached = cacheEntry != nullptr;
     if (found) {
       // If the user specifies the entry on the command line without a
       // type we should add the type and docstring but keep the
diff --git a/Source/cmFindCommon.cxx b/Source/cmFindCommon.cxx
index 4ef0f3e..9ebe824 100644
--- a/Source/cmFindCommon.cxx
+++ b/Source/cmFindCommon.cxx
@@ -242,13 +242,13 @@ void cmFindCommon::GetIgnoredPaths(std::vector<std::string>& ignore)
 {
   // null-terminated list of paths.
   static const char* paths[] = { "CMAKE_SYSTEM_IGNORE_PATH",
-                                 "CMAKE_IGNORE_PATH", CM_NULLPTR };
+                                 "CMAKE_IGNORE_PATH", nullptr };
 
   // Construct the list of path roots with no trailing slashes.
   for (const char** pathName = paths; *pathName; ++pathName) {
     // Get the list of paths to ignore from the variable.
     const char* ignorePath = this->Makefile->GetDefinition(*pathName);
-    if ((ignorePath == CM_NULLPTR) || (strlen(ignorePath) == 0)) {
+    if ((ignorePath == nullptr) || (strlen(ignorePath) == 0)) {
       continue;
     }
 
diff --git a/Source/cmFindPackageCommand.cxx b/Source/cmFindPackageCommand.cxx
index 7797700..d0cc6ce 100644
--- a/Source/cmFindPackageCommand.cxx
+++ b/Source/cmFindPackageCommand.cxx
@@ -1319,7 +1319,7 @@ public:
       cmSystemTools::RemoveFile(this->File);
     }
   }
-  void Release() { this->File = CM_NULLPTR; }
+  void Release() { this->File = nullptr; }
 };
 
 void cmFindPackageCommand::LoadPackageRegistryDir(std::string const& dir,
@@ -1642,7 +1642,7 @@ class cmFileList
 public:
   cmFileList()
     : First()
-    , Last(CM_NULLPTR)
+    , Last(nullptr)
   {
   }
   virtual ~cmFileList() {}
diff --git a/Source/cmFortranParserImpl.cxx b/Source/cmFortranParserImpl.cxx
index 4e23f36..00f9bcb 100644
--- a/Source/cmFortranParserImpl.cxx
+++ b/Source/cmFortranParserImpl.cxx
@@ -61,7 +61,7 @@ cmFortranParser_s::cmFortranParser_s(std::vector<std::string> const& includes,
   // Create a dummy buffer that is never read but is the fallback
   // buffer when the last file is popped off the stack.
   YY_BUFFER_STATE buffer =
-    cmFortran_yy_create_buffer(CM_NULLPTR, 4, this->Scanner);
+    cmFortran_yy_create_buffer(nullptr, 4, this->Scanner);
   cmFortran_yy_switch_to_buffer(buffer, this->Scanner);
 }
 
@@ -79,7 +79,7 @@ bool cmFortranParser_FilePush(cmFortranParser* parser, const char* fname)
     std::string dir = cmSystemTools::GetParentDirectory(fname);
     cmFortranFile f(file, current, dir);
     YY_BUFFER_STATE buffer =
-      cmFortran_yy_create_buffer(CM_NULLPTR, 16384, parser->Scanner);
+      cmFortran_yy_create_buffer(nullptr, 16384, parser->Scanner);
     cmFortran_yy_switch_to_buffer(buffer, parser->Scanner);
     parser->FileStack.push(f);
     return true;
diff --git a/Source/cmGeneratorExpression.h b/Source/cmGeneratorExpression.h
index 34516f5..2a1a25e 100644
--- a/Source/cmGeneratorExpression.h
+++ b/Source/cmGeneratorExpression.h
@@ -71,12 +71,12 @@ class cmCompiledGeneratorExpression
   CM_DISABLE_COPY(cmCompiledGeneratorExpression)
 
 public:
-  const char* Evaluate(
-    cmLocalGenerator* lg, const std::string& config, bool quiet = false,
-    cmGeneratorTarget const* headTarget = CM_NULLPTR,
-    cmGeneratorTarget const* currentTarget = CM_NULLPTR,
-    cmGeneratorExpressionDAGChecker* dagChecker = CM_NULLPTR,
-    std::string const& language = std::string()) const;
+  const char* Evaluate(cmLocalGenerator* lg, const std::string& config,
+                       bool quiet = false,
+                       cmGeneratorTarget const* headTarget = nullptr,
+                       cmGeneratorTarget const* currentTarget = nullptr,
+                       cmGeneratorExpressionDAGChecker* dagChecker = nullptr,
+                       std::string const& language = std::string()) const;
   const char* Evaluate(cmLocalGenerator* lg, const std::string& config,
                        bool quiet, cmGeneratorTarget const* headTarget,
                        cmGeneratorExpressionDAGChecker* dagChecker,
diff --git a/Source/cmGeneratorExpressionDAGChecker.h b/Source/cmGeneratorExpressionDAGChecker.h
index 557a192..fa6a112 100644
--- a/Source/cmGeneratorExpressionDAGChecker.h
+++ b/Source/cmGeneratorExpressionDAGChecker.h
@@ -61,7 +61,7 @@ struct cmGeneratorExpressionDAGChecker
   void ReportError(cmGeneratorExpressionContext* context,
                    const std::string& expr);
 
-  bool EvaluatingLinkLibraries(const char* tgt = CM_NULLPTR);
+  bool EvaluatingLinkLibraries(const char* tgt = nullptr);
 
 #define DECLARE_TRANSITIVE_PROPERTY_METHOD(METHOD) bool METHOD() const;
 
diff --git a/Source/cmGeneratorExpressionEvaluationFile.cxx b/Source/cmGeneratorExpressionEvaluationFile.cxx
index 5003e8d..11d1d1d 100644
--- a/Source/cmGeneratorExpressionEvaluationFile.cxx
+++ b/Source/cmGeneratorExpressionEvaluationFile.cxx
@@ -38,7 +38,7 @@ void cmGeneratorExpressionEvaluationFile::Generate(
   std::string rawCondition = this->Condition->GetInput();
   if (!rawCondition.empty()) {
     std::string condResult = this->Condition->Evaluate(
-      lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, lang);
+      lg, config, false, nullptr, nullptr, nullptr, lang);
     if (condResult == "0") {
       return;
     }
@@ -54,9 +54,9 @@ void cmGeneratorExpressionEvaluationFile::Generate(
   }
 
   std::string outputFileName = this->OutputFileExpr->Evaluate(
-    lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, lang);
+    lg, config, false, nullptr, nullptr, nullptr, lang);
   const std::string outputContent = inputExpression->Evaluate(
-    lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, lang);
+    lg, config, false, nullptr, nullptr, nullptr, lang);
 
   if (cmSystemTools::FileIsFullPath(outputFileName)) {
     outputFileName = cmSystemTools::CollapseFullPath(outputFileName);
@@ -103,7 +103,7 @@ void cmGeneratorExpressionEvaluationFile::CreateOutputFile(
   for (std::vector<std::string>::const_iterator le = enabledLanguages.begin();
        le != enabledLanguages.end(); ++le) {
     std::string name = this->OutputFileExpr->Evaluate(
-      lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, *le);
+      lg, config, false, nullptr, nullptr, nullptr, *le);
     cmSourceFile* sf = lg->GetMakefile()->GetOrCreateSource(name);
     sf->SetProperty("GENERATED", "1");
 
diff --git a/Source/cmGeneratorExpressionNode.cxx b/Source/cmGeneratorExpressionNode.cxx
index 4d2e5c7..4a43c0e 100644
--- a/Source/cmGeneratorExpressionNode.cxx
+++ b/Source/cmGeneratorExpressionNode.cxx
@@ -730,8 +730,7 @@ static const struct ConfigurationTestNode : public cmGeneratorExpressionNode
     CM_OVERRIDE
   {
     if (parameters.empty()) {
-      return configurationNode.Evaluate(parameters, context, content,
-                                        CM_NULLPTR);
+      return configurationNode.Evaluate(parameters, context, content, nullptr);
     }
     static cmsys::RegularExpression configValidator("^[A-Za-z0-9_]*$");
     if (!configValidator.find(*parameters.begin())) {
@@ -750,8 +749,8 @@ static const struct ConfigurationTestNode : public cmGeneratorExpressionNode
     }
 
     if (context->CurrentTarget && context->CurrentTarget->IsImported()) {
-      const char* loc = CM_NULLPTR;
-      const char* imp = CM_NULLPTR;
+      const char* loc = nullptr;
+      const char* imp = nullptr;
       std::string suffix;
       if (context->CurrentTarget->Target->GetMappedConfig(
             context->Config, &loc, &imp, suffix)) {
@@ -864,7 +863,7 @@ static const struct CompileLanguageNode : public cmGeneratorExpressionNode
 #define TRANSITIVE_PROPERTY_NAME(PROPERTY) , "INTERFACE_" #PROPERTY
 
 static const char* targetPropertyTransitiveWhitelist[] = {
-  CM_NULLPTR CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(TRANSITIVE_PROPERTY_NAME)
+  nullptr CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(TRANSITIVE_PROPERTY_NAME)
 };
 
 #undef TRANSITIVE_PROPERTY_NAME
@@ -1260,8 +1259,8 @@ static const struct TargetObjectsNode : public cmGeneratorExpressionNode
     std::vector<std::string> objects;
 
     if (gt->IsImported()) {
-      const char* loc = CM_NULLPTR;
-      const char* imp = CM_NULLPTR;
+      const char* loc = nullptr;
+      const char* imp = nullptr;
       std::string suffix;
       if (gt->Target->GetMappedConfig(context->Config, &loc, &imp, suffix)) {
         cmSystemTools::ExpandListArgument(loc, objects);
@@ -1389,7 +1388,7 @@ static const struct CompileFeaturesNode : public cmGeneratorExpressionNode
 } compileFeaturesNode;
 
 static const char* targetPolicyWhitelist[] = {
-  CM_NULLPTR
+  nullptr
 #define TARGET_POLICY_STRING(POLICY) , #POLICY
 
     CM_FOR_EACH_TARGET_POLICY(TARGET_POLICY_STRING)
@@ -1873,7 +1872,7 @@ const cmGeneratorExpressionNode* cmGeneratorExpressionNode::GetNode(
   }
   NodeMap::const_iterator i = nodeMap.find(identifier);
   if (i == nodeMap.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return i->second;
 }
diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index 05f94dd..a0a3f4f 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -204,14 +204,14 @@ const char* cmGeneratorTarget::GetProperty(const std::string& prop) const
   if (!cmTargetPropertyComputer::PassesWhitelist(
         this->GetType(), prop, this->Makefile->GetMessenger(),
         this->GetBacktrace())) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   if (const char* result = cmTargetPropertyComputer::GetProperty(
         this, prop, this->Makefile->GetMessenger(), this->GetBacktrace())) {
     return result;
   }
   if (cmSystemTools::GetFatalErrorOccured()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return this->Target->GetProperty(prop);
 }
@@ -379,7 +379,7 @@ std::vector<cmSourceFile*> const* cmGeneratorTarget::GetSourceDepends(
   if (i != this->SourceDepends.end()) {
     return &i->second.Depends;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static void handleSystemIncludesDep(
@@ -517,7 +517,7 @@ bool cmGeneratorTarget::IsIPOEnabled(std::string const& lang,
   }
 
   // Note: check consistency with messages from CheckIPOSupported
-  const char* message = CM_NULLPTR;
+  const char* message = nullptr;
   if (!this->Makefile->IsOn("_CMAKE_" + lang + "_IPO_SUPPORTED_BY_CMAKE")) {
     message = "CMake doesn't support IPO for current compiler";
   } else if (!this->Makefile->IsOn("_CMAKE_" + lang +
@@ -559,7 +559,7 @@ const char* cmGeneratorTarget::GetCustomObjectExtension() const
     extension = ".ptx";
     return extension.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmGeneratorTarget::AddExplicitObjectName(cmSourceFile const* sf)
@@ -755,7 +755,7 @@ bool cmGeneratorTarget::IsSystemIncludeDirectory(
 
   if (iter == this->SystemIncludesCache.end()) {
     cmGeneratorExpressionDAGChecker dagChecker(
-      this->GetName(), "SYSTEM_INCLUDE_DIRECTORIES", CM_NULLPTR, CM_NULLPTR);
+      this->GetName(), "SYSTEM_INCLUDE_DIRECTORIES", nullptr, nullptr);
 
     bool excludeImported = this->GetPropertyAsBool("NO_SYSTEM_FROM_IMPORTED");
 
@@ -948,7 +948,7 @@ void cmGeneratorTarget::GetSourceFiles(std::vector<std::string>& files,
   }
 
   cmGeneratorExpressionDAGChecker dagChecker(this->GetName(), "SOURCES",
-                                             CM_NULLPTR, CM_NULLPTR);
+                                             nullptr, nullptr);
 
   std::unordered_set<std::string> uniqueSrcs;
   bool contextDependentDirectSources =
@@ -1720,7 +1720,7 @@ const char* cmGeneratorTarget::GetExportMacro() const
     }
     return this->ExportMacro.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 class cmTargetCollectLinkLanguages
@@ -1980,7 +1980,7 @@ cmGeneratorTarget::CompileInfo const* cmGeneratorTarget::GetCompileInfo(
 {
   // There is no compile information for imported targets.
   if (this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   if (this->GetType() > cmStateEnums::OBJECT_LIBRARY) {
@@ -1989,7 +1989,7 @@ cmGeneratorTarget::CompileInfo const* cmGeneratorTarget::GetCompileInfo(
     msg += " which has type ";
     msg += cmState::GetTargetTypeName(this->GetType());
     this->LocalGenerator->IssueMessage(cmake::INTERNAL_ERROR, msg);
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup/compute/cache the compile information for this configuration.
@@ -2015,7 +2015,7 @@ cmGeneratorTarget::GetModuleDefinitionInfo(std::string const& config) const
   if (this->GetType() != cmStateEnums::SHARED_LIBRARY &&
       this->GetType() != cmStateEnums::MODULE_LIBRARY &&
       !this->IsExecutableWithExports()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup/compute/cache the compile information for this configuration.
@@ -2066,7 +2066,7 @@ void cmGeneratorTarget::GetAutoUicOptions(std::vector<std::string>& result,
   cmGeneratorExpression ge;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "AUTOUIC_OPTIONS", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "AUTOUIC_OPTIONS", nullptr, nullptr);
   cmSystemTools::ExpandListArgument(
     ge.Parse(prop)->Evaluate(this->LocalGenerator, config, false, this,
                              &dagChecker),
@@ -2151,7 +2151,7 @@ cmTargetTraceDependencies::cmTargetTraceDependencies(cmGeneratorTarget* target)
   this->Makefile = target->Target->GetMakefile();
   this->LocalGenerator = target->GetLocalGenerator();
   this->GlobalGenerator = this->LocalGenerator->GetGlobalGenerator();
-  this->CurrentEntry = CM_NULLPTR;
+  this->CurrentEntry = nullptr;
 
   // Queue all the source files already specified for the target.
   if (target->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
@@ -2226,7 +2226,7 @@ void cmTargetTraceDependencies::Trace()
       this->CheckCustomCommand(*cc);
     }
   }
-  this->CurrentEntry = CM_NULLPTR;
+  this->CurrentEntry = nullptr;
 
   this->GeneratorTarget->AddTracedSources(this->NewSources);
 }
@@ -2425,7 +2425,7 @@ std::string cmGeneratorTarget::GetCompilePDBDirectory(
 void cmGeneratorTarget::GetAppleArchs(const std::string& config,
                                       std::vector<std::string>& archVec) const
 {
-  const char* archs = CM_NULLPTR;
+  const char* archs = nullptr;
   if (!config.empty()) {
     std::string defVarName = "OSX_ARCHITECTURES_";
     defVarName += cmSystemTools::UpperCase(config);
@@ -2595,7 +2595,7 @@ std::vector<std::string> cmGeneratorTarget::GetIncludeDirectories(
   std::unordered_set<std::string> uniqueIncludes;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "INCLUDE_DIRECTORIES", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "INCLUDE_DIRECTORIES", nullptr, nullptr);
 
   std::vector<std::string> debugProperties;
   const char* debugProp =
@@ -2712,7 +2712,7 @@ void cmGeneratorTarget::GetCompileOptions(std::vector<std::string>& result,
   std::unordered_set<std::string> uniqueOptions;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "COMPILE_OPTIONS", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "COMPILE_OPTIONS", nullptr, nullptr);
 
   std::vector<std::string> debugProperties;
   const char* debugProp =
@@ -2765,7 +2765,7 @@ void cmGeneratorTarget::GetCompileFeatures(std::vector<std::string>& result,
   std::unordered_set<std::string> uniqueFeatures;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "COMPILE_FEATURES", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "COMPILE_FEATURES", nullptr, nullptr);
 
   std::vector<std::string> debugProperties;
   const char* debugProp =
@@ -2816,7 +2816,7 @@ void cmGeneratorTarget::GetCompileDefinitions(
   std::unordered_set<std::string> uniqueOptions;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "COMPILE_DEFINITIONS", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "COMPILE_DEFINITIONS", nullptr, nullptr);
 
   std::vector<std::string> debugProperties;
   const char* debugProp =
@@ -3052,8 +3052,8 @@ void cmGeneratorTarget::GetLibraryNames(std::string& name, std::string& soName,
       this->IsFrameworkOnApple()) {
     // Versioning is supported only for shared libraries and modules,
     // and then only when the platform supports an soname flag.
-    version = CM_NULLPTR;
-    soversion = CM_NULLPTR;
+    version = nullptr;
+    soversion = nullptr;
   }
   if (version && !soversion) {
     // The soversion must be set if the library version is set.  Use
@@ -3129,7 +3129,7 @@ void cmGeneratorTarget::GetExecutableNames(std::string& name,
   const char* version = this->GetProperty("VERSION");
   if (this->GetType() != cmStateEnums::EXECUTABLE ||
       this->Makefile->IsOn("XCODE")) {
-    version = CM_NULLPTR;
+    version = nullptr;
   }
 #endif
 
@@ -3235,7 +3235,7 @@ void cmGeneratorTarget::GetFullNameInternal(
   const char* targetSuffix =
     (isImportedLibraryArtifact ? this->GetProperty("IMPORT_SUFFIX")
                                : this->GetProperty("SUFFIX"));
-  const char* configPostfix = CM_NULLPTR;
+  const char* configPostfix = nullptr;
   if (!config.empty()) {
     std::string configProp = cmSystemTools::UpperCase(config);
     configProp += "_POSTFIX";
@@ -3243,7 +3243,7 @@ void cmGeneratorTarget::GetFullNameInternal(
     // Mac application bundles and frameworks have no postfix.
     if (configPostfix &&
         (this->IsAppBundleOnApple() || this->IsFrameworkOnApple())) {
-      configPostfix = CM_NULLPTR;
+      configPostfix = nullptr;
     }
   }
   const char* prefixVar = this->Target->GetPrefixVariableInternal(artifact);
@@ -3277,14 +3277,14 @@ void cmGeneratorTarget::GetFullNameInternal(
     fw_prefix = this->GetFrameworkDirectory(config, ContentLevel);
     fw_prefix += "/";
     targetPrefix = fw_prefix.c_str();
-    targetSuffix = CM_NULLPTR;
+    targetSuffix = nullptr;
   }
 
   if (this->IsCFBundleOnApple()) {
     fw_prefix = this->GetCFBundleDirectory(config, FullLevel);
     fw_prefix += "/";
     targetPrefix = fw_prefix.c_str();
-    targetSuffix = CM_NULLPTR;
+    targetSuffix = nullptr;
   }
 
   // Begin the final name with the prefix.
@@ -3588,7 +3588,7 @@ const char* getLinkInterfaceDependentProperty(cmGeneratorTarget const* tgt,
     case BoolType:
       assert(false &&
              "String compatibility check function called for boolean");
-      return CM_NULLPTR;
+      return nullptr;
     case StringType:
       return tgt->GetLinkInterfaceDependentStringProperty(prop, config);
     case NumberMinType:
@@ -3597,7 +3597,7 @@ const char* getLinkInterfaceDependentProperty(cmGeneratorTarget const* tgt,
       return tgt->GetLinkInterfaceDependentNumberMaxProperty(prop, config);
   }
   assert(false && "Unreachable!");
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 template <typename PropertyType>
@@ -3635,7 +3635,7 @@ void checkPropertyConsistency(cmGeneratorTarget const* depender,
     }
     if (emitted.insert(*pi).second) {
       getLinkInterfaceDependentProperty<PropertyType>(depender, *pi, config, t,
-                                                      CM_NULLPTR);
+                                                      nullptr);
       if (cmSystemTools::GetErrorOccuredFlag()) {
         return;
       }
@@ -3713,25 +3713,25 @@ void cmGeneratorTarget::CheckPropertyCompatibility(
     }
 
     checkPropertyConsistency<bool>(this, li->Target, strBool, emittedBools,
-                                   config, BoolType, CM_NULLPTR);
+                                   config, BoolType, nullptr);
     if (cmSystemTools::GetErrorOccuredFlag()) {
       return;
     }
     checkPropertyConsistency<const char*>(this, li->Target, strString,
                                           emittedStrings, config, StringType,
-                                          CM_NULLPTR);
+                                          nullptr);
     if (cmSystemTools::GetErrorOccuredFlag()) {
       return;
     }
     checkPropertyConsistency<const char*>(this, li->Target, strNumMin,
                                           emittedMinNumbers, config,
-                                          NumberMinType, CM_NULLPTR);
+                                          NumberMinType, nullptr);
     if (cmSystemTools::GetErrorOccuredFlag()) {
       return;
     }
     checkPropertyConsistency<const char*>(this, li->Target, strNumMax,
                                           emittedMaxNumbers, config,
-                                          NumberMaxType, CM_NULLPTR);
+                                          NumberMaxType, nullptr);
     if (cmSystemTools::GetErrorOccuredFlag()) {
       return;
     }
@@ -3865,7 +3865,7 @@ std::pair<bool, const char*> consistentStringProperty(const char* lhs,
                                                       const char* rhs)
 {
   const bool b = strcmp(lhs, rhs) == 0;
-  return std::make_pair(b, b ? lhs : CM_NULLPTR);
+  return std::make_pair(b, b ? lhs : nullptr);
 }
 
 std::pair<bool, const char*> consistentNumberProperty(const char* lhs,
@@ -3874,7 +3874,7 @@ std::pair<bool, const char*> consistentNumberProperty(const char* lhs,
 {
   char* pEnd;
 
-  const char* const null_ptr = CM_NULLPTR;
+  const char* const null_ptr = nullptr;
 
   long lnum = strtol(lhs, &pEnd, 0);
   if (pEnd == lhs || *pEnd != '\0' || errno == ERANGE) {
@@ -3907,7 +3907,7 @@ std::pair<bool, const char*> consistentProperty(const char* lhs,
     return std::make_pair(true, lhs);
   }
 
-  const char* const null_ptr = CM_NULLPTR;
+  const char* const null_ptr = nullptr;
 
   switch (t) {
     case BoolType:
@@ -4070,28 +4070,28 @@ bool cmGeneratorTarget::GetLinkInterfaceDependentBoolProperty(
   const std::string& p, const std::string& config) const
 {
   return checkInterfacePropertyCompatibility<bool>(this, p, config, "FALSE",
-                                                   BoolType, CM_NULLPTR);
+                                                   BoolType, nullptr);
 }
 
 const char* cmGeneratorTarget::GetLinkInterfaceDependentStringProperty(
   const std::string& p, const std::string& config) const
 {
   return checkInterfacePropertyCompatibility<const char*>(
-    this, p, config, "empty", StringType, CM_NULLPTR);
+    this, p, config, "empty", StringType, nullptr);
 }
 
 const char* cmGeneratorTarget::GetLinkInterfaceDependentNumberMinProperty(
   const std::string& p, const std::string& config) const
 {
   return checkInterfacePropertyCompatibility<const char*>(
-    this, p, config, "empty", NumberMinType, CM_NULLPTR);
+    this, p, config, "empty", NumberMinType, nullptr);
 }
 
 const char* cmGeneratorTarget::GetLinkInterfaceDependentNumberMaxProperty(
   const std::string& p, const std::string& config) const
 {
   return checkInterfacePropertyCompatibility<const char*>(
-    this, p, config, "empty", NumberMaxType, CM_NULLPTR);
+    this, p, config, "empty", NumberMaxType, nullptr);
 }
 
 cmComputeLinkInformation* cmGeneratorTarget::GetLinkInformation(
@@ -4106,7 +4106,7 @@ cmComputeLinkInformation* cmGeneratorTarget::GetLinkInformation(
       new cmComputeLinkInformation(this, config);
     if (!info || !info->Compute()) {
       delete info;
-      info = CM_NULLPTR;
+      info = nullptr;
     }
 
     // Store the information for this configuration.
@@ -4298,8 +4298,8 @@ void cmGeneratorTarget::ExpandLinkItems(
   std::vector<cmLinkItem>& items, bool& hadHeadSensitiveCondition) const
 {
   cmGeneratorExpression ge;
-  cmGeneratorExpressionDAGChecker dagChecker(this->GetName(), prop, CM_NULLPTR,
-                                             CM_NULLPTR);
+  cmGeneratorExpressionDAGChecker dagChecker(this->GetName(), prop, nullptr,
+                                             nullptr);
   // The $<LINK_ONLY> expression may be in a link interface to specify private
   // link dependencies that are otherwise excluded from usage requirements.
   if (usage_requirements_only) {
@@ -4327,7 +4327,7 @@ cmLinkInterface const* cmGeneratorTarget::GetLinkInterface(
   // export symbols.
   if (this->GetType() == cmStateEnums::EXECUTABLE &&
       !this->IsExecutableWithExports()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup any existing link interface for this configuration.
@@ -4351,7 +4351,7 @@ cmLinkInterface const* cmGeneratorTarget::GetLinkInterface(
     }
   }
 
-  return iface.Exists ? &iface : CM_NULLPTR;
+  return iface.Exists ? &iface : nullptr;
 }
 
 void cmGeneratorTarget::ComputeLinkInterface(
@@ -4443,7 +4443,7 @@ const cmLinkInterfaceLibraries* cmGeneratorTarget::GetLinkInterfaceLibraries(
   // export symbols.
   if (this->GetType() == cmStateEnums::EXECUTABLE &&
       !this->IsExecutableWithExports()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup any existing link interface for this configuration.
@@ -4466,7 +4466,7 @@ const cmLinkInterfaceLibraries* cmGeneratorTarget::GetLinkInterfaceLibraries(
                                         usage_requirements_only);
   }
 
-  return iface.Exists ? &iface : CM_NULLPTR;
+  return iface.Exists ? &iface : nullptr;
 }
 
 std::string cmGeneratorTarget::GetDirectory(
@@ -4501,7 +4501,7 @@ cmGeneratorTarget::OutputInfo const* cmGeneratorTarget::GetOutputInfo(
 {
   // There is no output information for imported targets.
   if (this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Only libraries and executables have well-defined output files.
@@ -4511,7 +4511,7 @@ cmGeneratorTarget::OutputInfo const* cmGeneratorTarget::GetOutputInfo(
     msg += " which has type ";
     msg += cmState::GetTargetTypeName(this->GetType());
     this->LocalGenerator->IssueMessage(cmake::INTERNAL_ERROR, msg);
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup/compute/cache the output information for this configuration.
@@ -4544,7 +4544,7 @@ cmGeneratorTarget::OutputInfo const* cmGeneratorTarget::GetOutputInfo(
       cmake::FATAL_ERROR,
       "Target '" + this->GetName() + "' OUTPUT_DIRECTORY depends on itself.",
       this->GetBacktrace());
-    return CM_NULLPTR;
+    return nullptr;
   }
   return &i->second;
 }
@@ -4559,7 +4559,7 @@ bool cmGeneratorTarget::ComputeOutputDir(const std::string& config,
   // Look for a target property defining the target output directory
   // based on the target type.
   std::string targetTypeName = this->GetOutputTargetType(artifact);
-  const char* propertyName = CM_NULLPTR;
+  const char* propertyName = nullptr;
   std::string propertyNameStr = targetTypeName;
   if (!propertyNameStr.empty()) {
     propertyNameStr += "_OUTPUT_DIRECTORY";
@@ -4568,7 +4568,7 @@ bool cmGeneratorTarget::ComputeOutputDir(const std::string& config,
 
   // Check for a per-configuration output directory target property.
   std::string configUpper = cmSystemTools::UpperCase(conf);
-  const char* configProp = CM_NULLPTR;
+  const char* configProp = nullptr;
   std::string configPropStr = targetTypeName;
   if (!configPropStr.empty()) {
     configPropStr += "_OUTPUT_DIRECTORY_";
@@ -4636,7 +4636,7 @@ bool cmGeneratorTarget::ComputePDBOutputDir(const std::string& kind,
 {
   // Look for a target property defining the target output directory
   // based on the target type.
-  const char* propertyName = CM_NULLPTR;
+  const char* propertyName = nullptr;
   std::string propertyNameStr = kind;
   if (!propertyNameStr.empty()) {
     propertyNameStr += "_OUTPUT_DIRECTORY";
@@ -4646,7 +4646,7 @@ bool cmGeneratorTarget::ComputePDBOutputDir(const std::string& kind,
 
   // Check for a per-configuration output directory target property.
   std::string configUpper = cmSystemTools::UpperCase(conf);
-  const char* configProp = CM_NULLPTR;
+  const char* configProp = nullptr;
   std::string configPropStr = kind;
   if (!configPropStr.empty()) {
     configPropStr += "_OUTPUT_DIRECTORY_";
@@ -4704,7 +4704,7 @@ void cmGeneratorTarget::ComputeLinkInterfaceLibraries(
 
   // An explicit list of interface libraries may be set for shared
   // libraries and executables that export symbols.
-  const char* explicitLibraries = CM_NULLPTR;
+  const char* explicitLibraries = nullptr;
   std::string linkIfaceProp;
   if (this->GetPolicyStatusCMP0022() != cmPolicies::OLD &&
       this->GetPolicyStatusCMP0022() != cmPolicies::WARN) {
@@ -4831,7 +4831,7 @@ const cmLinkInterface* cmGeneratorTarget::GetImportLinkInterface(
 {
   cmGeneratorTarget::ImportInfo const* info = this->GetImportInfo(config);
   if (!info) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   std::string CONFIG = cmSystemTools::UpperCase(config);
@@ -4867,7 +4867,7 @@ cmGeneratorTarget::ImportInfo const* cmGeneratorTarget::GetImportInfo(
 {
   // There is no imported information for non-imported targets.
   if (!this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup/compute/cache the import information for this
@@ -4893,7 +4893,7 @@ cmGeneratorTarget::ImportInfo const* cmGeneratorTarget::GetImportInfo(
   // If the location is empty then the target is not available for
   // this configuration.
   if (i->second.Location.empty() && i->second.ImportLibrary.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Return the import information.
@@ -4910,8 +4910,8 @@ void cmGeneratorTarget::ComputeImportInfo(std::string const& desired_config,
   // Initialize members.
   info.NoSOName = false;
 
-  const char* loc = CM_NULLPTR;
-  const char* imp = CM_NULLPTR;
+  const char* loc = nullptr;
+  const char* imp = nullptr;
   std::string suffix;
   if (!this->Target->GetMappedConfig(desired_config, &loc, &imp, suffix)) {
     return;
@@ -5056,7 +5056,7 @@ const cmLinkImplementation* cmGeneratorTarget::GetLinkImplementation(
 {
   // There is no link implementation for imported targets.
   if (this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   std::string CONFIG = cmSystemTools::UpperCase(config);
@@ -5288,7 +5288,7 @@ cmGeneratorTarget::GetLinkImplementationLibrariesInternal(
 {
   // There is no link implementation for imported targets.
   if (this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Populate the link implementation libraries for this configuration.
@@ -5329,7 +5329,7 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries(
        le != end; ++le, ++btIt) {
     std::vector<std::string> llibs;
     cmGeneratorExpressionDAGChecker dagChecker(
-      this->GetName(), "LINK_LIBRARIES", CM_NULLPTR, CM_NULLPTR);
+      this->GetName(), "LINK_LIBRARIES", nullptr, nullptr);
     cmGeneratorExpression ge(*btIt);
     CM_AUTO_PTR<cmCompiledGeneratorExpression> const cge = ge.Parse(*le);
     std::string const evaluated =
@@ -5422,7 +5422,7 @@ cmGeneratorTarget* cmGeneratorTarget::FindTargetToLink(
   // within the project.
   if (tgt && tgt->GetType() == cmStateEnums::EXECUTABLE &&
       !tgt->IsExecutableWithExports()) {
-    tgt = CM_NULLPTR;
+    tgt = nullptr;
   }
 
   if (tgt && tgt->GetType() == cmStateEnums::OBJECT_LIBRARY) {
@@ -5436,7 +5436,7 @@ cmGeneratorTarget* cmGeneratorTarget::FindTargetToLink(
          "with the ENABLE_EXPORTS property set.";
     cmake* cm = this->LocalGenerator->GetCMakeInstance();
     cm->IssueMessage(cmake::FATAL_ERROR, e.str(), this->GetBacktrace());
-    tgt = CM_NULLPTR;
+    tgt = nullptr;
   }
 
   return tgt;
diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h
index b5f7f6e..9d31143 100644
--- a/Source/cmGeneratorTarget.h
+++ b/Source/cmGeneratorTarget.h
@@ -524,7 +524,7 @@ public:
   {
     SourceFileFlags()
       : Type(SourceFileTypeNormal)
-      , MacFolder(CM_NULLPTR)
+      , MacFolder(nullptr)
     {
     }
     SourceFileType Type;
@@ -570,7 +570,7 @@ public:
   /** Convert the given GNU import library name (.dll.a) to a name with a new
       extension (.lib or ${CMAKE_IMPORT_LIBRARY_SUFFIX}).  */
   bool GetImplibGNUtoMS(std::string const& gnuName, std::string& out,
-                        const char* newExt = CM_NULLPTR) const;
+                        const char* newExt = nullptr) const;
 
   bool IsExecutableWithExports() const;
 
diff --git a/Source/cmGetCMakePropertyCommand.cxx b/Source/cmGetCMakePropertyCommand.cxx
index 5ba3326..fc82fee 100644
--- a/Source/cmGetCMakePropertyCommand.cxx
+++ b/Source/cmGetCMakePropertyCommand.cxx
@@ -37,7 +37,7 @@ bool cmGetCMakePropertyCommand::InitialPass(
       this->Makefile->GetGlobalGenerator()->GetInstallComponents();
     output = cmJoin(*components, ";");
   } else {
-    const char* prop = CM_NULLPTR;
+    const char* prop = nullptr;
     if (!args[1].empty()) {
       prop = this->Makefile->GetState()->GetGlobalProperty(args[1]);
     }
diff --git a/Source/cmGetDirectoryPropertyCommand.cxx b/Source/cmGetDirectoryPropertyCommand.cxx
index 1005b15..a8cf6ab 100644
--- a/Source/cmGetDirectoryPropertyCommand.cxx
+++ b/Source/cmGetDirectoryPropertyCommand.cxx
@@ -70,7 +70,7 @@ bool cmGetDirectoryPropertyCommand::InitialPass(
     return true;
   }
 
-  const char* prop = CM_NULLPTR;
+  const char* prop = nullptr;
   if (!i->empty()) {
     if (*i == "DEFINITIONS") {
       switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0059)) {
diff --git a/Source/cmGetPropertyCommand.cxx b/Source/cmGetPropertyCommand.cxx
index ddecdf6..4494c3e 100644
--- a/Source/cmGetPropertyCommand.cxx
+++ b/Source/cmGetPropertyCommand.cxx
@@ -258,9 +258,9 @@ bool cmGetPropertyCommand::HandleTargetMode()
       if (this->Makefile->IsAlias(this->Name)) {
         return this->StoreResult(target->GetName().c_str());
       }
-      return this->StoreResult(CM_NULLPTR);
+      return this->StoreResult(nullptr);
     }
-    const char* prop_cstr = CM_NULLPTR;
+    const char* prop_cstr = nullptr;
     cmListFileBacktrace bt = this->Makefile->GetBacktrace();
     cmMessenger* messenger = this->Makefile->GetMessenger();
     if (cmTargetPropertyComputer::PassesWhitelist(
@@ -333,7 +333,7 @@ bool cmGetPropertyCommand::HandleCacheMode()
     return false;
   }
 
-  const char* value = CM_NULLPTR;
+  const char* value = nullptr;
   if (this->Makefile->GetState()->GetCacheEntryValue(this->Name)) {
     value = this->Makefile->GetState()->GetCacheEntryProperty(
       this->Name, this->PropertyName);
@@ -357,7 +357,7 @@ bool cmGetPropertyCommand::HandleInstallMode()
     std::string value;
     bool isSet = file->GetProperty(this->PropertyName, value);
 
-    return this->StoreResult(isSet ? value.c_str() : CM_NULLPTR);
+    return this->StoreResult(isSet ? value.c_str() : nullptr);
   }
   std::ostringstream e;
   e << "given INSTALL name that could not be found or created: " << this->Name;
diff --git a/Source/cmGetSourceFilePropertyCommand.cxx b/Source/cmGetSourceFilePropertyCommand.cxx
index 1a5f08e..75879a5 100644
--- a/Source/cmGetSourceFilePropertyCommand.cxx
+++ b/Source/cmGetSourceFilePropertyCommand.cxx
@@ -28,7 +28,7 @@ bool cmGetSourceFilePropertyCommand::InitialPass(
       this->Makefile->AddDefinition(var, sf->GetLanguage().c_str());
       return true;
     }
-    const char* prop = CM_NULLPTR;
+    const char* prop = nullptr;
     if (!args[2].empty()) {
       prop = sf->GetPropertyForUser(args[2]);
     }
diff --git a/Source/cmGetTargetPropertyCommand.cxx b/Source/cmGetTargetPropertyCommand.cxx
index 0910a53..ec485aa 100644
--- a/Source/cmGetTargetPropertyCommand.cxx
+++ b/Source/cmGetTargetPropertyCommand.cxx
@@ -34,7 +34,7 @@ bool cmGetTargetPropertyCommand::InitialPass(
         prop_exists = true;
       }
     } else if (!args[2].empty()) {
-      const char* prop_cstr = CM_NULLPTR;
+      const char* prop_cstr = nullptr;
       cmListFileBacktrace bt = this->Makefile->GetBacktrace();
       cmMessenger* messenger = this->Makefile->GetMessenger();
       if (cmTargetPropertyComputer::PassesWhitelist(tgt->GetType(), args[2],
diff --git a/Source/cmGetTestPropertyCommand.cxx b/Source/cmGetTestPropertyCommand.cxx
index 6424515..0b0d6eb 100644
--- a/Source/cmGetTestPropertyCommand.cxx
+++ b/Source/cmGetTestPropertyCommand.cxx
@@ -20,7 +20,7 @@ bool cmGetTestPropertyCommand::InitialPass(
   std::string const& var = args[2];
   cmTest* test = this->Makefile->GetTest(testName);
   if (test) {
-    const char* prop = CM_NULLPTR;
+    const char* prop = nullptr;
     if (!args[1].empty()) {
       prop = test->GetProperty(args[1]);
     }
diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index 85ba5ee..ab35593 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -89,9 +89,9 @@ cmGlobalGenerator::cmGlobalGenerator(cmake* cm)
   // how long to let try compiles run
   this->TryCompileTimeout = 0;
 
-  this->ExtraGenerator = CM_NULLPTR;
-  this->CurrentConfigureMakefile = CM_NULLPTR;
-  this->TryCompileOuterMakefile = CM_NULLPTR;
+  this->ExtraGenerator = nullptr;
+  this->CurrentConfigureMakefile = nullptr;
+  this->TryCompileOuterMakefile = nullptr;
 
   this->ConfigureDoneCMP0026AndCMP0024 = false;
   this->FirstTimeProgress = 0.0f;
@@ -252,7 +252,7 @@ bool cmGlobalGenerator::GenerateImportFile(const std::string& file)
     }
 
     delete it->second;
-    it->second = CM_NULLPTR;
+    it->second = nullptr;
     this->BuildExportSets.erase(it);
     return result;
   }
@@ -1144,7 +1144,7 @@ void cmGlobalGenerator::Configure()
     std::ostringstream msg;
     if (cmSystemTools::GetErrorOccuredFlag()) {
       msg << "Configuring incomplete, errors occurred!";
-      const char* logs[] = { "CMakeOutput.log", "CMakeError.log", CM_NULLPTR };
+      const char* logs[] = { "CMakeOutput.log", "CMakeError.log", nullptr };
       for (const char** log = logs; *log; ++log) {
         std::string f = this->CMakeInstance->GetHomeOutputDirectory();
         f += this->CMakeInstance->GetCMakeFilesDirectory();
@@ -1191,7 +1191,7 @@ cmExportBuildFileGenerator* cmGlobalGenerator::GetExportedTargetsFile(
 {
   std::map<std::string, cmExportBuildFileGenerator*>::const_iterator it =
     this->BuildExportSets.find(filename);
-  return it == this->BuildExportSets.end() ? CM_NULLPTR : it->second;
+  return it == this->BuildExportSets.end() ? nullptr : it->second;
 }
 
 void cmGlobalGenerator::AddCMP0042WarnTarget(const std::string& target)
@@ -1351,7 +1351,7 @@ void cmGlobalGenerator::Generate()
       "Generating", (static_cast<float>(i) + 1.0f) /
         static_cast<float>(this->LocalGenerators.size()));
   }
-  this->SetCurrentMakefile(CM_NULLPTR);
+  this->SetCurrentMakefile(nullptr);
 
   if (!this->GenerateCPackPropertiesFile()) {
     this->GetCMakeInstance()->IssueMessage(
@@ -1374,7 +1374,7 @@ void cmGlobalGenerator::Generate()
 
   this->WriteSummary();
 
-  if (this->ExtraGenerator != CM_NULLPTR) {
+  if (this->ExtraGenerator != nullptr) {
     this->ExtraGenerator->Generate();
   }
 
@@ -1815,7 +1815,7 @@ int cmGlobalGenerator::Build(const std::string& /*unused*/,
     output += "\n";
 
     if (!cmSystemTools::RunSingleCommand(cleanCommand, outputPtr, outputPtr,
-                                         &retVal, CM_NULLPTR, outputflag,
+                                         &retVal, nullptr, outputflag,
                                          timeout)) {
       cmSystemTools::SetRunCommandHideConsole(hideconsole);
       cmSystemTools::Error("Generator: execution of make clean failed.");
@@ -1834,7 +1834,7 @@ int cmGlobalGenerator::Build(const std::string& /*unused*/,
   output += "\n";
 
   if (!cmSystemTools::RunSingleCommand(makeCommand, outputPtr, outputPtr,
-                                       &retVal, CM_NULLPTR, outputflag,
+                                       &retVal, nullptr, outputflag,
                                        timeout)) {
     cmSystemTools::SetRunCommandHideConsole(hideconsole);
     cmSystemTools::Error(
@@ -2057,7 +2057,7 @@ cmMakefile* cmGlobalGenerator::FindMakefile(const std::string& start_dir) const
   if (i != this->MakefileSearchIndex.end()) {
     return i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 ///! Find a local generator by its startdirectory
@@ -2072,7 +2072,7 @@ cmLocalGenerator* cmGlobalGenerator::FindLocalGenerator(
       return *it;
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmGlobalGenerator::AddAlias(const std::string& name,
@@ -2117,7 +2117,7 @@ cmTarget* cmGlobalGenerator::FindTargetImpl(std::string const& name) const
   if (i != this->TargetSearchIndex.end()) {
     return i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmGeneratorTarget* cmGlobalGenerator::FindGeneratorTargetImpl(
@@ -2128,7 +2128,7 @@ cmGeneratorTarget* cmGlobalGenerator::FindGeneratorTargetImpl(
   if (i != this->GeneratorTargetSearchIndex.end()) {
     return i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmTarget* cmGlobalGenerator::FindTarget(const std::string& name,
@@ -2413,7 +2413,7 @@ void cmGlobalGenerator::AddGlobalTarget_Install(
 
     // install_strip
     const char* install_strip = this->GetInstallStripTargetName();
-    if ((install_strip != CM_NULLPTR) && (mf->IsSet("CMAKE_STRIP"))) {
+    if ((install_strip != nullptr) && (mf->IsSet("CMAKE_STRIP"))) {
       gti.Name = install_strip;
       gti.Message = "Installing the project stripped...";
       gti.UsesTerminal = true;
@@ -2470,8 +2470,8 @@ cmTarget cmGlobalGenerator::CreateGlobalTarget(GlobalTargetInfo const& gti,
   std::vector<std::string> no_byproducts;
   std::vector<std::string> no_depends;
   // Store the custom command in the target.
-  cmCustomCommand cc(CM_NULLPTR, no_outputs, no_byproducts, no_depends,
-                     gti.CommandLines, CM_NULLPTR, gti.WorkingDir.c_str());
+  cmCustomCommand cc(nullptr, no_outputs, no_byproducts, no_depends,
+                     gti.CommandLines, nullptr, gti.WorkingDir.c_str());
   cc.SetUsesTerminal(gti.UsesTerminal);
   target.AddPostBuildCommand(cc);
   if (!gti.Message.empty()) {
@@ -2556,7 +2556,7 @@ void cmGlobalGenerator::SetExternalMakefileProjectGenerator(
   cmExternalMakefileProjectGenerator* extraGenerator)
 {
   this->ExtraGenerator = extraGenerator;
-  if (this->ExtraGenerator != CM_NULLPTR) {
+  if (this->ExtraGenerator != nullptr) {
     this->ExtraGenerator->SetGlobalGenerator(this);
   }
 }
diff --git a/Source/cmGlobalGenerator.h b/Source/cmGlobalGenerator.h
index aad6725..7239878 100644
--- a/Source/cmGlobalGenerator.h
+++ b/Source/cmGlobalGenerator.h
@@ -295,15 +295,15 @@ public:
 
   virtual const char* GetAllTargetName() const { return "ALL_BUILD"; }
   virtual const char* GetInstallTargetName() const { return "INSTALL"; }
-  virtual const char* GetInstallLocalTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetInstallStripTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetPreinstallTargetName() const { return CM_NULLPTR; }
+  virtual const char* GetInstallLocalTargetName() const { return nullptr; }
+  virtual const char* GetInstallStripTargetName() const { return nullptr; }
+  virtual const char* GetPreinstallTargetName() const { return nullptr; }
   virtual const char* GetTestTargetName() const { return "RUN_TESTS"; }
   virtual const char* GetPackageTargetName() const { return "PACKAGE"; }
-  virtual const char* GetPackageSourceTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetEditCacheTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetRebuildCacheTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetCleanTargetName() const { return CM_NULLPTR; }
+  virtual const char* GetPackageSourceTargetName() const { return nullptr; }
+  virtual const char* GetEditCacheTargetName() const { return nullptr; }
+  virtual const char* GetRebuildCacheTargetName() const { return nullptr; }
+  virtual const char* GetCleanTargetName() const { return nullptr; }
 
   // Lookup edit_cache target command preferred by this generator.
   virtual std::string GetEditCacheCommand() const { return ""; }
@@ -557,7 +557,7 @@ private:
 
   void IndexMakefile(cmMakefile* mf);
 
-  virtual const char* GetBuildIgnoreErrorsFlag() const { return CM_NULLPTR; }
+  virtual const char* GetBuildIgnoreErrorsFlag() const { return nullptr; }
 
   // Cache directory content and target files to be built.
   struct DirectoryContent
diff --git a/Source/cmGlobalGeneratorFactory.h b/Source/cmGlobalGeneratorFactory.h
index d5a6db0..0f192b2 100644
--- a/Source/cmGlobalGeneratorFactory.h
+++ b/Source/cmGlobalGeneratorFactory.h
@@ -48,7 +48,7 @@ public:
                                            cmake* cm) const CM_OVERRIDE
   {
     if (name != T::GetActualName()) {
-      return CM_NULLPTR;
+      return nullptr;
     }
     return new T(cm);
   }
diff --git a/Source/cmGlobalKdevelopGenerator.cxx b/Source/cmGlobalKdevelopGenerator.cxx
index 85a1417..39ac73a 100644
--- a/Source/cmGlobalKdevelopGenerator.cxx
+++ b/Source/cmGlobalKdevelopGenerator.cxx
@@ -115,13 +115,13 @@ bool cmGlobalKdevelopGenerator::CreateFilelistFile(
       // make sure the file is part of this source tree
       if ((tmp[0] != '/') &&
           (strstr(tmp.c_str(), cmake::GetCMakeFilesDirectoryPostSlash()) ==
-           CM_NULLPTR)) {
+           nullptr)) {
         files.insert(tmp);
         tmp = cmSystemTools::GetFilenameName(tmp);
         // add all files which dont match the default
         // */CMakeLists.txt;*cmake; to the file pattern
         if ((tmp != "CMakeLists.txt") &&
-            (strstr(tmp.c_str(), ".cmake") == CM_NULLPTR)) {
+            (strstr(tmp.c_str(), ".cmake") == nullptr)) {
           cmakeFilePattern += tmp + ";";
         }
       }
@@ -147,7 +147,7 @@ bool cmGlobalKdevelopGenerator::CreateFilelistFile(
 
         if ((tmp[0] != '/') &&
             (strstr(tmp.c_str(), cmake::GetCMakeFilesDirectoryPostSlash()) ==
-             CM_NULLPTR) &&
+             nullptr) &&
             (cmSystemTools::GetFilenameExtension(tmp) != ".moc")) {
           files.insert(tmp);
 
@@ -171,7 +171,7 @@ bool cmGlobalKdevelopGenerator::CreateFilelistFile(
         cmSystemTools::ReplaceString(tmp, projectDir.c_str(), "");
         if ((tmp[0] != '/') &&
             (strstr(tmp.c_str(), cmake::GetCMakeFilesDirectoryPostSlash()) ==
-             CM_NULLPTR)) {
+             nullptr)) {
           files.insert(tmp);
         }
       }
@@ -301,12 +301,12 @@ void cmGlobalKdevelopGenerator::MergeProjectFiles(
        it != lines.end(); it++) {
     const char* line = (*it).c_str();
     // skip these tags as they are always replaced
-    if ((strstr(line, "<projectdirectory>") != CM_NULLPTR) ||
-        (strstr(line, "<projectmanagement>") != CM_NULLPTR) ||
-        (strstr(line, "<absoluteprojectpath>") != CM_NULLPTR) ||
-        (strstr(line, "<filelistdirectory>") != CM_NULLPTR) ||
-        (strstr(line, "<buildtool>") != CM_NULLPTR) ||
-        (strstr(line, "<builddir>") != CM_NULLPTR)) {
+    if ((strstr(line, "<projectdirectory>") != nullptr) ||
+        (strstr(line, "<projectmanagement>") != nullptr) ||
+        (strstr(line, "<absoluteprojectpath>") != nullptr) ||
+        (strstr(line, "<filelistdirectory>") != nullptr) ||
+        (strstr(line, "<buildtool>") != nullptr) ||
+        (strstr(line, "<builddir>") != nullptr)) {
       continue;
     }
 
diff --git a/Source/cmGlobalNinjaGenerator.cxx b/Source/cmGlobalNinjaGenerator.cxx
index 2eef9e4..7bc4239 100644
--- a/Source/cmGlobalNinjaGenerator.cxx
+++ b/Source/cmGlobalNinjaGenerator.cxx
@@ -474,9 +474,9 @@ void cmGlobalNinjaGenerator::WriteDefault(std::ostream& os,
 
 cmGlobalNinjaGenerator::cmGlobalNinjaGenerator(cmake* cm)
   : cmGlobalCommonGenerator(cm)
-  , BuildFileStream(CM_NULLPTR)
-  , RulesFileStream(CM_NULLPTR)
-  , CompileCommandsStream(CM_NULLPTR)
+  , BuildFileStream(nullptr)
+  , RulesFileStream(nullptr)
+  , CompileCommandsStream(nullptr)
   , Rules()
   , AllDependencies()
   , UsingGCCOnWindows(false)
@@ -582,8 +582,8 @@ bool cmGlobalNinjaGenerator::FindMakeProgram(cmMakefile* mf)
     command.push_back("--version");
     std::string version;
     std::string error;
-    if (!cmSystemTools::RunSingleCommand(command, &version, &error, CM_NULLPTR,
-                                         CM_NULLPTR,
+    if (!cmSystemTools::RunSingleCommand(command, &version, &error, nullptr,
+                                         nullptr,
                                          cmSystemTools::OUTPUT_NONE)) {
       mf->IssueMessage(cmake::FATAL_ERROR, "Running\n '" +
                          cmJoin(command, "' '") + "'\n"
@@ -805,7 +805,7 @@ void cmGlobalNinjaGenerator::CloseBuildFileStream()
 {
   if (this->BuildFileStream) {
     delete this->BuildFileStream;
-    this->BuildFileStream = CM_NULLPTR;
+    this->BuildFileStream = nullptr;
   } else {
     cmSystemTools::Error("Build file stream was not open.");
   }
@@ -847,7 +847,7 @@ void cmGlobalNinjaGenerator::CloseRulesFileStream()
 {
   if (this->RulesFileStream) {
     delete this->RulesFileStream;
-    this->RulesFileStream = CM_NULLPTR;
+    this->RulesFileStream = nullptr;
   } else {
     cmSystemTools::Error("Rules file stream was not open.");
   }
@@ -928,7 +928,7 @@ void cmGlobalNinjaGenerator::CloseCompileCommandsStream()
   if (this->CompileCommandsStream) {
     *this->CompileCommandsStream << "\n]";
     delete this->CompileCommandsStream;
-    this->CompileCommandsStream = CM_NULLPTR;
+    this->CompileCommandsStream = nullptr;
   }
 }
 
@@ -1092,7 +1092,7 @@ void cmGlobalNinjaGenerator::AddTargetAlias(const std::string& alias,
   // Mark the target's outputs as ambiguous to ensure that no other target uses
   // the output as an alias.
   for (cmNinjaDeps::iterator i = outputs.begin(); i != outputs.end(); ++i) {
-    TargetAliases[*i] = CM_NULLPTR;
+    TargetAliases[*i] = nullptr;
   }
 
   // Insert the alias into the map.  If the alias was already present in the
@@ -1100,7 +1100,7 @@ void cmGlobalNinjaGenerator::AddTargetAlias(const std::string& alias,
   std::pair<TargetAliasMap::iterator, bool> newAlias =
     TargetAliases.insert(std::make_pair(buildAlias, target));
   if (newAlias.second && newAlias.first->second != target) {
-    newAlias.first->second = CM_NULLPTR;
+    newAlias.first->second = nullptr;
   }
 }
 
diff --git a/Source/cmGlobalNinjaGenerator.h b/Source/cmGlobalNinjaGenerator.h
index b0008f7..49528b9 100644
--- a/Source/cmGlobalNinjaGenerator.h
+++ b/Source/cmGlobalNinjaGenerator.h
@@ -114,7 +114,7 @@ public:
                   const cmNinjaDeps& orderOnlyDeps,
                   const cmNinjaVars& variables,
                   const std::string& rspfile = std::string(),
-                  int cmdLineLimit = 0, bool* usedResponseFile = CM_NULLPTR);
+                  int cmdLineLimit = 0, bool* usedResponseFile = nullptr);
 
   /**
    * Helper to write a build statement with the special 'phony' rule.
diff --git a/Source/cmGlobalUnixMakefileGenerator3.cxx b/Source/cmGlobalUnixMakefileGenerator3.cxx
index e42bf20..05c9ce0 100644
--- a/Source/cmGlobalUnixMakefileGenerator3.cxx
+++ b/Source/cmGlobalUnixMakefileGenerator3.cxx
@@ -38,7 +38,7 @@ cmGlobalUnixMakefileGenerator3::cmGlobalUnixMakefileGenerator3(cmake* cm)
 #else
   this->UseLinkScript = true;
 #endif
-  this->CommandDatabase = CM_NULLPTR;
+  this->CommandDatabase = nullptr;
 
   this->IncludeDirective = "include";
   this->DefineWindowsNULL = false;
@@ -161,10 +161,10 @@ void cmGlobalUnixMakefileGenerator3::Generate()
   this->WriteMainMakefile2();
   this->WriteMainCMakefile();
 
-  if (this->CommandDatabase != CM_NULLPTR) {
+  if (this->CommandDatabase != nullptr) {
     *this->CommandDatabase << std::endl << "]";
     delete this->CommandDatabase;
-    this->CommandDatabase = CM_NULLPTR;
+    this->CommandDatabase = nullptr;
   }
 }
 
@@ -172,7 +172,7 @@ void cmGlobalUnixMakefileGenerator3::AddCXXCompileCommand(
   const std::string& sourceFile, const std::string& workingDirectory,
   const std::string& compileCommand)
 {
-  if (this->CommandDatabase == CM_NULLPTR) {
+  if (this->CommandDatabase == nullptr) {
     std::string commandDatabaseName =
       std::string(this->GetCMakeInstance()->GetHomeOutputDirectory()) +
       "/compile_commands.json";
diff --git a/Source/cmGlobalVisualStudio10Generator.cxx b/Source/cmGlobalVisualStudio10Generator.cxx
index 4fff11a..1c0953a 100644
--- a/Source/cmGlobalVisualStudio10Generator.cxx
+++ b/Source/cmGlobalVisualStudio10Generator.cxx
@@ -495,7 +495,7 @@ const char* cmGlobalVisualStudio10Generator::GetPlatformToolset() const
 {
   std::string const& toolset = this->GetPlatformToolsetString();
   if (toolset.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return toolset.c_str();
 }
@@ -519,7 +519,7 @@ cmGlobalVisualStudio10Generator::GetPlatformToolsetHostArchitecture() const
   if (!this->GeneratorToolsetHostArchitecture.empty()) {
     return this->GeneratorToolsetHostArchitecture.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 const char* cmGlobalVisualStudio10Generator::GetPlatformToolsetCuda() const
@@ -527,7 +527,7 @@ const char* cmGlobalVisualStudio10Generator::GetPlatformToolsetCuda() const
   if (!this->GeneratorToolsetCuda.empty()) {
     return this->GeneratorToolsetCuda.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 std::string const&
@@ -971,7 +971,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetClFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetClFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultClFlagTable;
+  return (table != nullptr) ? table : this->DefaultClFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetCSharpFlagTable()
@@ -980,7 +980,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetCSharpFlagTable()
   cmIDEFlagTable const* table = this->ToolsetOptions.GetCSharpFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultCSharpFlagTable;
+  return (table != nullptr) ? table : this->DefaultCSharpFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetRcFlagTable() const
@@ -988,7 +988,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetRcFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetRcFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultRcFlagTable;
+  return (table != nullptr) ? table : this->DefaultRcFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetLibFlagTable() const
@@ -996,7 +996,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetLibFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetLibFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultLibFlagTable;
+  return (table != nullptr) ? table : this->DefaultLibFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetLinkFlagTable() const
@@ -1004,7 +1004,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetLinkFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetLinkFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultLinkFlagTable;
+  return (table != nullptr) ? table : this->DefaultLinkFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetCudaFlagTable() const
@@ -1023,7 +1023,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetMasmFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetMasmFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultMasmFlagTable;
+  return (table != nullptr) ? table : this->DefaultMasmFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetNasmFlagTable() const
diff --git a/Source/cmGlobalVisualStudio71Generator.cxx b/Source/cmGlobalVisualStudio71Generator.cxx
index aeceb8d..624f9e5 100644
--- a/Source/cmGlobalVisualStudio71Generator.cxx
+++ b/Source/cmGlobalVisualStudio71Generator.cxx
@@ -202,7 +202,7 @@ void cmGlobalVisualStudio71Generator::WriteProjectConfigurations(
        i != configs.end(); ++i) {
     const char* dstConfig = target.GetProperty("MAP_IMPORTED_CONFIG_" +
                                                cmSystemTools::UpperCase(*i));
-    if (dstConfig == CM_NULLPTR) {
+    if (dstConfig == nullptr) {
       dstConfig = i->c_str();
     }
     fout << "\t\t{" << guid << "}." << *i << ".ActiveCfg = " << dstConfig
diff --git a/Source/cmGlobalVisualStudio8Generator.cxx b/Source/cmGlobalVisualStudio8Generator.cxx
index ed1ef1b..728ad2d 100644
--- a/Source/cmGlobalVisualStudio8Generator.cxx
+++ b/Source/cmGlobalVisualStudio8Generator.cxx
@@ -356,7 +356,7 @@ void cmGlobalVisualStudio8Generator::WriteProjectConfigurations(
        i != configs.end(); ++i) {
     const char* dstConfig = target.GetProperty("MAP_IMPORTED_CONFIG_" +
                                                cmSystemTools::UpperCase(*i));
-    if (dstConfig == CM_NULLPTR) {
+    if (dstConfig == nullptr) {
       dstConfig = i->c_str();
     }
     fout << "\t\t{" << guid << "}." << *i << "|" << this->GetPlatformName()
diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index 8f260ec..3bdf789 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -193,7 +193,7 @@ cmGlobalGenerator* cmGlobalXCodeGenerator::Factory::CreateGlobalGenerator(
   if (version_number < 30) {
     cm->IssueMessage(cmake::FATAL_ERROR,
                      "Xcode " + version_string + " not supported.");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   CM_AUTO_PTR<cmGlobalXCodeGenerator> gg(
@@ -3609,7 +3609,7 @@ bool cmGlobalXCodeGenerator::HasKnownObjectFileLocation(
   std::string* reason) const
 {
   if (this->ObjectDirArch.find('$') != std::string::npos) {
-    if (reason != CM_NULLPTR) {
+    if (reason != nullptr) {
       *reason = " under Xcode with multiple architectures";
     }
     return false;
diff --git a/Source/cmGraphVizWriter.cxx b/Source/cmGraphVizWriter.cxx
index 015f887..daf8bb0 100644
--- a/Source/cmGraphVizWriter.cxx
+++ b/Source/cmGraphVizWriter.cxx
@@ -150,7 +150,7 @@ void cmGraphVizWriter::WriteTargetDependersFiles(const char* fileName)
   for (std::map<std::string, const cmGeneratorTarget*>::const_iterator ptrIt =
          this->TargetPtrs.begin();
        ptrIt != this->TargetPtrs.end(); ++ptrIt) {
-    if (ptrIt->second == CM_NULLPTR) {
+    if (ptrIt->second == nullptr) {
       continue;
     }
 
@@ -194,7 +194,7 @@ void cmGraphVizWriter::WritePerTargetFiles(const char* fileName)
   for (std::map<std::string, const cmGeneratorTarget*>::const_iterator ptrIt =
          this->TargetPtrs.begin();
        ptrIt != this->TargetPtrs.end(); ++ptrIt) {
-    if (ptrIt->second == CM_NULLPTR) {
+    if (ptrIt->second == nullptr) {
       continue;
     }
 
@@ -240,7 +240,7 @@ void cmGraphVizWriter::WriteGlobalFile(const char* fileName)
   for (std::map<std::string, const cmGeneratorTarget*>::const_iterator ptrIt =
          this->TargetPtrs.begin();
        ptrIt != this->TargetPtrs.end(); ++ptrIt) {
-    if (ptrIt->second == CM_NULLPTR) {
+    if (ptrIt->second == nullptr) {
       continue;
     }
 
@@ -279,7 +279,7 @@ void cmGraphVizWriter::WriteConnections(
 
   this->WriteNode(targetName, targetPtrIt->second, insertedNodes, str);
 
-  if (targetPtrIt->second == CM_NULLPTR) // it's an external library
+  if (targetPtrIt->second == nullptr) // it's an external library
   {
     return;
   }
@@ -330,7 +330,7 @@ void cmGraphVizWriter::WriteDependerConnections(
 
   this->WriteNode(targetName, targetPtrIt->second, insertedNodes, str);
 
-  if (targetPtrIt->second == CM_NULLPTR) // it's an external library
+  if (targetPtrIt->second == nullptr) // it's an external library
   {
     return;
   }
@@ -341,7 +341,7 @@ void cmGraphVizWriter::WriteDependerConnections(
   for (std::map<std::string, const cmGeneratorTarget*>::const_iterator
          dependerIt = this->TargetPtrs.begin();
        dependerIt != this->TargetPtrs.end(); ++dependerIt) {
-    if (dependerIt->second == CM_NULLPTR) {
+    if (dependerIt->second == nullptr) {
       continue;
     }
 
@@ -471,7 +471,7 @@ int cmGraphVizWriter::CollectAllExternalLibs(int cnt)
           std::ostringstream ostr;
           ostr << this->GraphNodePrefix << cnt++;
           this->TargetNamesNodes[libName] = ostr.str();
-          this->TargetPtrs[libName] = CM_NULLPTR;
+          this->TargetPtrs[libName] = nullptr;
           // str << "    \"" << ostr << "\" [ label=\"" << libName
           // <<  "\" shape=\"ellipse\"];" << std::endl;
         }
diff --git a/Source/cmHexFileConverter.cxx b/Source/cmHexFileConverter.cxx
index 78dceb7..057a7bb 100644
--- a/Source/cmHexFileConverter.cxx
+++ b/Source/cmHexFileConverter.cxx
@@ -22,7 +22,7 @@ static bool cm_IsHexChar(char c)
 
 static unsigned int ChompStrlen(const char* line)
 {
-  if (line == CM_NULLPTR) {
+  if (line == nullptr) {
     return 0;
   }
   unsigned int length = static_cast<unsigned int>(strlen(line));
@@ -139,7 +139,7 @@ cmHexFileConverter::FileType cmHexFileConverter::DetermineFileType(
 {
   char buf[1024];
   FILE* inFile = cmsys::SystemTools::Fopen(inFileName, "rb");
-  if (inFile == CM_NULLPTR) {
+  if (inFile == nullptr) {
     return Binary;
   }
 
@@ -188,11 +188,11 @@ bool cmHexFileConverter::TryConvert(const char* inFileName,
   // try to open the file
   FILE* inFile = cmsys::SystemTools::Fopen(inFileName, "rb");
   FILE* outFile = cmsys::SystemTools::Fopen(outFileName, "wb");
-  if ((inFile == CM_NULLPTR) || (outFile == CM_NULLPTR)) {
-    if (inFile != CM_NULLPTR) {
+  if ((inFile == nullptr) || (outFile == nullptr)) {
+    if (inFile != nullptr) {
       fclose(inFile);
     }
-    if (outFile != CM_NULLPTR) {
+    if (outFile != nullptr) {
       fclose(outFile);
     }
     return false;
@@ -201,7 +201,7 @@ bool cmHexFileConverter::TryConvert(const char* inFileName,
   // convert them line by line
   bool success = false;
   char buf[1024];
-  while (fgets(buf, 1024, inFile) != CM_NULLPTR) {
+  while (fgets(buf, 1024, inFile) != nullptr) {
     if (type == MotorolaSrec) {
       success = ConvertMotorolaSrecLine(buf, outFile);
     } else if (type == IntelHex) {
diff --git a/Source/cmIncludeCommand.cxx b/Source/cmIncludeCommand.cxx
index 12e0c9a..cd4d850 100644
--- a/Source/cmIncludeCommand.cxx
+++ b/Source/cmIncludeCommand.cxx
@@ -78,7 +78,7 @@ bool cmIncludeCommand::InitialPass(std::vector<std::string> const& args,
 
   cmGlobalGenerator* gg = this->Makefile->GetGlobalGenerator();
   if (gg->IsExportedTargetsFile(fname_abs)) {
-    const char* modal = CM_NULLPTR;
+    const char* modal = nullptr;
     std::ostringstream e;
     cmake::MessageType messageType = cmake::AUTHOR_WARNING;
 
diff --git a/Source/cmInstallCommand.cxx b/Source/cmInstallCommand.cxx
index 294fb17..7402105 100644
--- a/Source/cmInstallCommand.cxx
+++ b/Source/cmInstallCommand.cxx
@@ -204,7 +204,7 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
 
   cmCommandArgumentsHelper argHelper;
   cmCommandArgumentGroup group;
-  cmCAStringVector genericArgVector(&argHelper, CM_NULLPTR);
+  cmCAStringVector genericArgVector(&argHelper, nullptr);
   cmCAStringVector archiveArgVector(&argHelper, "ARCHIVE", &group);
   cmCAStringVector libraryArgVector(&argHelper, "LIBRARY", &group);
   cmCAStringVector runtimeArgVector(&argHelper, "RUNTIME", &group);
@@ -216,10 +216,10 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
                                           &group);
   cmCAStringVector publicHeaderArgVector(&argHelper, "PUBLIC_HEADER", &group);
   cmCAStringVector resourceArgVector(&argHelper, "RESOURCE", &group);
-  genericArgVector.Follows(CM_NULLPTR);
+  genericArgVector.Follows(nullptr);
   group.Follows(&genericArgVector);
 
-  argHelper.Parse(&args, CM_NULLPTR);
+  argHelper.Parse(&args, nullptr);
 
   // now parse the generic args (i.e. the ones not specialized on LIBRARY/
   // ARCHIVE, RUNTIME etc. (see above)
@@ -229,7 +229,7 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
   cmCAStringVector targetList(&genericArgs.Parser, "TARGETS");
   cmCAString exports(&genericArgs.Parser, "EXPORT",
                      &genericArgs.ArgumentGroup);
-  targetList.Follows(CM_NULLPTR);
+  targetList.Follows(nullptr);
   genericArgs.ArgumentGroup.Follows(&targetList);
   genericArgs.Parse(&genericArgVector.GetVector(), &unknownArgs);
   bool success = genericArgs.Finalize();
@@ -402,15 +402,15 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
        ti != targets.end(); ++ti) {
     // Handle each target type.
     cmTarget& target = *(*ti);
-    cmInstallTargetGenerator* archiveGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* libraryGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* runtimeGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* objectGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* frameworkGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* bundleGenerator = CM_NULLPTR;
-    cmInstallFilesGenerator* privateHeaderGenerator = CM_NULLPTR;
-    cmInstallFilesGenerator* publicHeaderGenerator = CM_NULLPTR;
-    cmInstallFilesGenerator* resourceGenerator = CM_NULLPTR;
+    cmInstallTargetGenerator* archiveGenerator = nullptr;
+    cmInstallTargetGenerator* libraryGenerator = nullptr;
+    cmInstallTargetGenerator* runtimeGenerator = nullptr;
+    cmInstallTargetGenerator* objectGenerator = nullptr;
+    cmInstallTargetGenerator* frameworkGenerator = nullptr;
+    cmInstallTargetGenerator* bundleGenerator = nullptr;
+    cmInstallFilesGenerator* privateHeaderGenerator = nullptr;
+    cmInstallFilesGenerator* publicHeaderGenerator = nullptr;
+    cmInstallFilesGenerator* resourceGenerator = nullptr;
 
     // Track whether this is a namelink-only rule.
     bool namelinkOnly = false;
@@ -437,8 +437,7 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
             runtimeGenerator =
               CreateInstallTargetGenerator(target, runtimeArgs, false);
           }
-          if ((archiveGenerator == CM_NULLPTR) &&
-              (runtimeGenerator == CM_NULLPTR)) {
+          if ((archiveGenerator == nullptr) && (runtimeGenerator == nullptr)) {
             this->SetError("Library TARGETS given no DESTINATION!");
             return false;
           }
@@ -688,16 +687,16 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
     }
 
     // Keep track of whether we're installing anything in each category
-    installsArchive = installsArchive || archiveGenerator != CM_NULLPTR;
-    installsLibrary = installsLibrary || libraryGenerator != CM_NULLPTR;
-    installsRuntime = installsRuntime || runtimeGenerator != CM_NULLPTR;
-    installsObject = installsObject || objectGenerator != CM_NULLPTR;
-    installsFramework = installsFramework || frameworkGenerator != CM_NULLPTR;
-    installsBundle = installsBundle || bundleGenerator != CM_NULLPTR;
+    installsArchive = installsArchive || archiveGenerator != nullptr;
+    installsLibrary = installsLibrary || libraryGenerator != nullptr;
+    installsRuntime = installsRuntime || runtimeGenerator != nullptr;
+    installsObject = installsObject || objectGenerator != nullptr;
+    installsFramework = installsFramework || frameworkGenerator != nullptr;
+    installsBundle = installsBundle || bundleGenerator != nullptr;
     installsPrivateHeader =
-      installsPrivateHeader || privateHeaderGenerator != CM_NULLPTR;
+      installsPrivateHeader || privateHeaderGenerator != nullptr;
     installsPublicHeader =
-      installsPublicHeader || publicHeaderGenerator != CM_NULLPTR;
+      installsPublicHeader || publicHeaderGenerator != nullptr;
     installsResource = installsResource || resourceGenerator;
 
     this->Makefile->AddInstallGenerator(archiveGenerator);
@@ -779,7 +778,7 @@ bool cmInstallCommand::HandleFilesMode(std::vector<std::string> const& args)
   bool programs = (args[0] == "PROGRAMS");
   cmInstallCommandArguments ica(this->DefaultComponentName);
   cmCAStringVector files(&ica.Parser, programs ? "PROGRAMS" : "FILES");
-  files.Follows(CM_NULLPTR);
+  files.Follows(nullptr);
   ica.ArgumentGroup.Follows(&files);
   std::vector<std::string> unknownArgs;
   ica.Parse(&args, &unknownArgs);
@@ -819,7 +818,7 @@ bool cmInstallCommand::HandleFilesMode(std::vector<std::string> const& args)
   for (std::vector<std::string>::const_iterator fileIt = filesVector.begin();
        fileIt != filesVector.end(); ++fileIt) {
     if (gg->IsExportedTargetsFile(*fileIt)) {
-      const char* modal = CM_NULLPTR;
+      const char* modal = nullptr;
       std::ostringstream e;
       cmake::MessageType messageType = cmake::AUTHOR_WARNING;
 
@@ -895,7 +894,7 @@ bool cmInstallCommand::HandleDirectoryMode(
   bool exclude_from_all = false;
   bool message_never = false;
   std::vector<std::string> dirs;
-  const char* destination = CM_NULLPTR;
+  const char* destination = nullptr;
   std::string permissions_file;
   std::string permissions_dir;
   std::vector<std::string> configurations;
@@ -1181,7 +1180,7 @@ bool cmInstallCommand::HandleExportAndroidMKMode(
   cmCAEnabler exportOld(&ica.Parser, "EXPORT_LINK_INTERFACE_LIBRARIES",
                         &ica.ArgumentGroup);
   cmCAString filename(&ica.Parser, "FILE", &ica.ArgumentGroup);
-  exp.Follows(CM_NULLPTR);
+  exp.Follows(nullptr);
 
   ica.ArgumentGroup.Follows(&exp);
   std::vector<std::string> unknownArgs;
@@ -1273,7 +1272,7 @@ bool cmInstallCommand::HandleExportMode(std::vector<std::string> const& args)
   cmCAEnabler exportOld(&ica.Parser, "EXPORT_LINK_INTERFACE_LIBRARIES",
                         &ica.ArgumentGroup);
   cmCAString filename(&ica.Parser, "FILE", &ica.ArgumentGroup);
-  exp.Follows(CM_NULLPTR);
+  exp.Follows(nullptr);
 
   ica.ArgumentGroup.Follows(&exp);
   std::vector<std::string> unknownArgs;
diff --git a/Source/cmInstallCommandArguments.cxx b/Source/cmInstallCommandArguments.cxx
index b73414d..94c2e83 100644
--- a/Source/cmInstallCommandArguments.cxx
+++ b/Source/cmInstallCommandArguments.cxx
@@ -10,7 +10,7 @@
 const char* cmInstallCommandArguments::PermissionsTable[] = {
   "OWNER_READ",    "OWNER_WRITE",   "OWNER_EXECUTE", "GROUP_READ",
   "GROUP_WRITE",   "GROUP_EXECUTE", "WORLD_READ",    "WORLD_WRITE",
-  "WORLD_EXECUTE", "SETUID",        "SETGID",        CM_NULLPTR
+  "WORLD_EXECUTE", "SETUID",        "SETGID",        nullptr
 };
 
 const std::string cmInstallCommandArguments::EmptyString;
@@ -28,7 +28,7 @@ cmInstallCommandArguments::cmInstallCommandArguments(
   , Optional(&Parser, "OPTIONAL", &ArgumentGroup)
   , NamelinkOnly(&Parser, "NAMELINK_ONLY", &ArgumentGroup)
   , NamelinkSkip(&Parser, "NAMELINK_SKIP", &ArgumentGroup)
-  , GenericArguments(CM_NULLPTR)
+  , GenericArguments(nullptr)
   , DefaultComponentName(defaultComponent)
 {
 }
@@ -38,7 +38,7 @@ const std::string& cmInstallCommandArguments::GetDestination() const
   if (!this->DestinationString.empty()) {
     return this->DestinationString;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetDestination();
   }
   return this->EmptyString;
@@ -49,7 +49,7 @@ const std::string& cmInstallCommandArguments::GetComponent() const
   if (!this->Component.GetString().empty()) {
     return this->Component.GetString();
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetComponent();
   }
   if (!this->DefaultComponentName.empty()) {
@@ -64,7 +64,7 @@ const std::string& cmInstallCommandArguments::GetRename() const
   if (!this->Rename.GetString().empty()) {
     return this->Rename.GetString();
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetRename();
   }
   return this->EmptyString;
@@ -75,7 +75,7 @@ const std::string& cmInstallCommandArguments::GetPermissions() const
   if (!this->PermissionsString.empty()) {
     return this->PermissionsString;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetPermissions();
   }
   return this->EmptyString;
@@ -86,7 +86,7 @@ bool cmInstallCommandArguments::GetOptional() const
   if (this->Optional.IsEnabled()) {
     return true;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetOptional();
   }
   return false;
@@ -97,7 +97,7 @@ bool cmInstallCommandArguments::GetExcludeFromAll() const
   if (this->ExcludeFromAll.IsEnabled()) {
     return true;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetExcludeFromAll();
   }
   return false;
@@ -108,7 +108,7 @@ bool cmInstallCommandArguments::GetNamelinkOnly() const
   if (this->NamelinkOnly.IsEnabled()) {
     return true;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetNamelinkOnly();
   }
   return false;
@@ -119,7 +119,7 @@ bool cmInstallCommandArguments::GetNamelinkSkip() const
   if (this->NamelinkSkip.IsEnabled()) {
     return true;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetNamelinkSkip();
   }
   return false;
@@ -131,7 +131,7 @@ const std::vector<std::string>& cmInstallCommandArguments::GetConfigurations()
   if (!this->Configurations.GetVector().empty()) {
     return this->Configurations.GetVector();
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetConfigurations();
   }
   return this->Configurations.GetVector();
diff --git a/Source/cmInstallDirectoryGenerator.cxx b/Source/cmInstallDirectoryGenerator.cxx
index 54ad85c..1ca9893 100644
--- a/Source/cmInstallDirectoryGenerator.cxx
+++ b/Source/cmInstallDirectoryGenerator.cxx
@@ -17,7 +17,7 @@ cmInstallDirectoryGenerator::cmInstallDirectoryGenerator(
   bool optional)
   : cmInstallGenerator(dest, configurations, component, message,
                        exclude_from_all)
-  , LocalGenerator(CM_NULLPTR)
+  , LocalGenerator(nullptr)
   , Directories(dirs)
   , FilePermissions(file_permissions)
   , DirPermissions(dir_permissions)
@@ -86,7 +86,7 @@ void cmInstallDirectoryGenerator::AddDirectoryInstallRule(
   std::vector<std::string> const& dirs)
 {
   // Write code to install the directories.
-  const char* no_rename = CM_NULLPTR;
+  const char* no_rename = nullptr;
   this->AddInstallRule(os, this->GetDestination(config),
                        cmInstallType_DIRECTORY, dirs, this->Optional,
                        this->FilePermissions.c_str(),
diff --git a/Source/cmInstallExportAndroidMKGenerator.cxx b/Source/cmInstallExportAndroidMKGenerator.cxx
index 8eeaa9c..dd85b88 100644
--- a/Source/cmInstallExportAndroidMKGenerator.cxx
+++ b/Source/cmInstallExportAndroidMKGenerator.cxx
@@ -95,8 +95,8 @@ void cmInstallExportAndroidMKGenerator::GenerateScriptConfigs(
     std::string config_test = this->CreateConfigTest(i->first);
     os << indent << "if(" << config_test << ")\n";
     this->AddInstallRule(os, this->Destination, cmInstallType_FILES, files,
-                         false, this->FilePermissions.c_str(), CM_NULLPTR,
-                         CM_NULLPTR, CM_NULLPTR, indent.Next());
+                         false, this->FilePermissions.c_str(), nullptr,
+                         nullptr, nullptr, indent.Next());
     os << indent << "endif()\n";
     files.clear();
   }
@@ -135,6 +135,6 @@ void cmInstallExportAndroidMKGenerator::GenerateScriptActions(
   std::vector<std::string> files;
   files.push_back(this->MainImportFile);
   this->AddInstallRule(os, this->Destination, cmInstallType_FILES, files,
-                       false, this->FilePermissions.c_str(), CM_NULLPTR,
-                       CM_NULLPTR, CM_NULLPTR, indent);
+                       false, this->FilePermissions.c_str(), nullptr, nullptr,
+                       nullptr, indent);
 }
diff --git a/Source/cmInstallExportGenerator.cxx b/Source/cmInstallExportGenerator.cxx
index b176e85..ec1b210 100644
--- a/Source/cmInstallExportGenerator.cxx
+++ b/Source/cmInstallExportGenerator.cxx
@@ -29,7 +29,7 @@ cmInstallExportGenerator::cmInstallExportGenerator(
   , FileName(filename)
   , Namespace(name_space)
   , ExportOld(exportOld)
-  , LocalGenerator(CM_NULLPTR)
+  , LocalGenerator(nullptr)
 {
   if (android) {
 #ifdef CMAKE_BUILD_WITH_CMAKE
@@ -181,8 +181,8 @@ void cmInstallExportGenerator::GenerateScriptConfigs(std::ostream& os,
     std::string config_test = this->CreateConfigTest(i->first);
     os << indent << "if(" << config_test << ")\n";
     this->AddInstallRule(os, this->Destination, cmInstallType_FILES, files,
-                         false, this->FilePermissions.c_str(), CM_NULLPTR,
-                         CM_NULLPTR, CM_NULLPTR, indent.Next());
+                         false, this->FilePermissions.c_str(), nullptr,
+                         nullptr, nullptr, indent.Next());
     os << indent << "endif()\n";
     files.clear();
   }
@@ -221,6 +221,6 @@ void cmInstallExportGenerator::GenerateScriptActions(std::ostream& os,
   std::vector<std::string> files;
   files.push_back(this->MainImportFile);
   this->AddInstallRule(os, this->Destination, cmInstallType_FILES, files,
-                       false, this->FilePermissions.c_str(), CM_NULLPTR,
-                       CM_NULLPTR, CM_NULLPTR, indent);
+                       false, this->FilePermissions.c_str(), nullptr, nullptr,
+                       nullptr, indent);
 }
diff --git a/Source/cmInstallFilesGenerator.cxx b/Source/cmInstallFilesGenerator.cxx
index 6323a91..4fcff4f 100644
--- a/Source/cmInstallFilesGenerator.cxx
+++ b/Source/cmInstallFilesGenerator.cxx
@@ -16,7 +16,7 @@ cmInstallFilesGenerator::cmInstallFilesGenerator(
   const char* rename, bool optional)
   : cmInstallGenerator(dest, configurations, component, message,
                        exclude_from_all)
-  , LocalGenerator(CM_NULLPTR)
+  , LocalGenerator(nullptr)
   , Files(files)
   , FilePermissions(file_permissions)
   , Rename(rename)
@@ -58,12 +58,12 @@ void cmInstallFilesGenerator::AddFilesInstallRule(
   std::vector<std::string> const& files)
 {
   // Write code to install the files.
-  const char* no_dir_permissions = CM_NULLPTR;
+  const char* no_dir_permissions = nullptr;
   this->AddInstallRule(
     os, this->GetDestination(config),
     (this->Programs ? cmInstallType_PROGRAMS : cmInstallType_FILES), files,
     this->Optional, this->FilePermissions.c_str(), no_dir_permissions,
-    this->Rename.c_str(), CM_NULLPTR, indent);
+    this->Rename.c_str(), nullptr, indent);
 }
 
 void cmInstallFilesGenerator::GenerateScriptActions(std::ostream& os,
diff --git a/Source/cmInstallGenerator.h b/Source/cmInstallGenerator.h
index 8f8701f..a2130d1 100644
--- a/Source/cmInstallGenerator.h
+++ b/Source/cmInstallGenerator.h
@@ -41,9 +41,9 @@ public:
   void AddInstallRule(
     std::ostream& os, std::string const& dest, cmInstallType type,
     std::vector<std::string> const& files, bool optional = false,
-    const char* permissions_file = CM_NULLPTR,
-    const char* permissions_dir = CM_NULLPTR, const char* rename = CM_NULLPTR,
-    const char* literal_args = CM_NULLPTR, Indent indent = Indent());
+    const char* permissions_file = nullptr,
+    const char* permissions_dir = nullptr, const char* rename = nullptr,
+    const char* literal_args = nullptr, Indent indent = Indent());
 
   /** Get the install destination as it should appear in the
       installation script.  */
diff --git a/Source/cmInstallScriptGenerator.cxx b/Source/cmInstallScriptGenerator.cxx
index b39a622..f7e6e44 100644
--- a/Source/cmInstallScriptGenerator.cxx
+++ b/Source/cmInstallScriptGenerator.cxx
@@ -11,7 +11,7 @@ cmInstallScriptGenerator::cmInstallScriptGenerator(const char* script,
                                                    bool code,
                                                    const char* component,
                                                    bool exclude_from_all)
-  : cmInstallGenerator(CM_NULLPTR, std::vector<std::string>(), component,
+  : cmInstallGenerator(nullptr, std::vector<std::string>(), component,
                        MessageDefault, exclude_from_all)
   , Script(script)
   , Code(code)
diff --git a/Source/cmInstallTargetGenerator.cxx b/Source/cmInstallTargetGenerator.cxx
index 84d6f7a..2b15aeb 100644
--- a/Source/cmInstallTargetGenerator.cxx
+++ b/Source/cmInstallTargetGenerator.cxx
@@ -28,7 +28,7 @@ cmInstallTargetGenerator::cmInstallTargetGenerator(
   : cmInstallGenerator(dest, configurations, component, message,
                        exclude_from_all)
   , TargetName(targetName)
-  , Target(CM_NULLPTR)
+  , Target(nullptr)
   , FilePermissions(file_permissions)
   , ImportLibrary(implib)
   , Optional(optional)
@@ -312,8 +312,8 @@ void cmInstallTargetGenerator::GenerateScriptForConfig(
                  &cmInstallTargetGenerator::PreReplacementTweaks);
 
   // Write code to install the target file.
-  const char* no_dir_permissions = CM_NULLPTR;
-  const char* no_rename = CM_NULLPTR;
+  const char* no_dir_permissions = nullptr;
+  const char* no_rename = nullptr;
   bool optional = this->Optional || this->ImportLibrary;
   this->AddInstallRule(os, this->GetDestination(config), type, filesFrom,
                        optional, this->FilePermissions.c_str(),
@@ -351,8 +351,8 @@ void cmInstallTargetGenerator::GenerateScriptForConfigObjectLibrary(
   std::string const obj_dir = this->Target->GetObjectDirectory(config);
   std::string const literal_args = " FILES_FROM_DIR \"" + obj_dir + "\"";
 
-  const char* no_dir_permissions = CM_NULLPTR;
-  const char* no_rename = CM_NULLPTR;
+  const char* no_dir_permissions = nullptr;
+  const char* no_rename = nullptr;
   this->AddInstallRule(os, dest, cmInstallType_FILES, objects, this->Optional,
                        this->FilePermissions.c_str(), no_dir_permissions,
                        no_rename, literal_args.c_str(), indent);
diff --git a/Source/cmInstalledFile.cxx b/Source/cmInstalledFile.cxx
index d51fd8d..4430b3a 100644
--- a/Source/cmInstalledFile.cxx
+++ b/Source/cmInstalledFile.cxx
@@ -11,7 +11,7 @@
 #include <utility>
 
 cmInstalledFile::cmInstalledFile()
-  : NameExpression(CM_NULLPTR)
+  : NameExpression(nullptr)
 {
 }
 
diff --git a/Source/cmLinkItem.h b/Source/cmLinkItem.h
index f0fded2..85bd449 100644
--- a/Source/cmLinkItem.h
+++ b/Source/cmLinkItem.h
@@ -24,7 +24,7 @@ class cmLinkItem : public std::string
 public:
   cmLinkItem()
     : std_string()
-    , Target(CM_NULLPTR)
+    , Target(nullptr)
   {
   }
   cmLinkItem(const std_string& n, cmGeneratorTarget const* t)
@@ -105,7 +105,7 @@ struct cmOptionalLinkInterface : public cmLinkInterface
     , AllDone(false)
     , Exists(false)
     , HadHeadSensitiveCondition(false)
-    , ExplicitLibraries(CM_NULLPTR)
+    , ExplicitLibraries(nullptr)
   {
   }
   bool LibrariesDone;
diff --git a/Source/cmLinkedTree.h b/Source/cmLinkedTree.h
index 55592cb..2a8bb5a 100644
--- a/Source/cmLinkedTree.h
+++ b/Source/cmLinkedTree.h
@@ -49,7 +49,7 @@ public:
 
   public:
     iterator()
-      : Tree(CM_NULLPTR)
+      : Tree(nullptr)
       , Position(0)
     {
     }
diff --git a/Source/cmListFileCache.cxx b/Source/cmListFileCache.cxx
index 0c73cd7..69c4e0d 100644
--- a/Source/cmListFileCache.cxx
+++ b/Source/cmListFileCache.cxx
@@ -82,7 +82,7 @@ bool cmListFileParser::ParseFile()
   }
 
   if (bom == cmListFileLexer_BOM_Broken) {
-    cmListFileLexer_SetFileName(this->Lexer, CM_NULLPTR, CM_NULLPTR);
+    cmListFileLexer_SetFileName(this->Lexer, nullptr, nullptr);
     this->IssueFileOpenError("Error while reading Byte-Order-Mark. "
                              "File not seekable?");
     return false;
@@ -90,7 +90,7 @@ bool cmListFileParser::ParseFile()
 
   // Verify the Byte-Order-Mark, if any.
   if (bom != cmListFileLexer_BOM_None && bom != cmListFileLexer_BOM_UTF8) {
-    cmListFileLexer_SetFileName(this->Lexer, CM_NULLPTR, CM_NULLPTR);
+    cmListFileLexer_SetFileName(this->Lexer, nullptr, nullptr);
     this->IssueFileOpenError(
       "File starts with a Byte-Order-Mark that is not UTF-8.");
     return false;
@@ -330,13 +330,13 @@ cmListFileBacktrace::cmListFileBacktrace(cmStateSnapshot const& bottom,
 
 cmListFileBacktrace::cmListFileBacktrace()
   : Bottom()
-  , Cur(CM_NULLPTR)
+  , Cur(nullptr)
 {
 }
 
 cmListFileBacktrace::cmListFileBacktrace(cmStateSnapshot const& snapshot)
   : Bottom(snapshot.GetCallStackBottom())
-  , Cur(CM_NULLPTR)
+  , Cur(nullptr)
 {
 }
 
diff --git a/Source/cmLoadCommandCommand.cxx b/Source/cmLoadCommandCommand.cxx
index 92a32a1..f533c97 100644
--- a/Source/cmLoadCommandCommand.cxx
+++ b/Source/cmLoadCommandCommand.cxx
@@ -63,7 +63,7 @@ public:
   void FinalPass() CM_OVERRIDE;
   bool HasFinalPass() const CM_OVERRIDE
   {
-    return this->info.FinalPass != CM_NULLPTR;
+    return this->info.FinalPass != nullptr;
   }
 
   static const char* LastName;
@@ -86,11 +86,11 @@ public:
 #endif
       signal(SIGILL, TrapsForSignalsCFunction);
     } else {
-      signal(SIGSEGV, CM_NULLPTR);
+      signal(SIGSEGV, nullptr);
 #ifdef SIGBUS
-      signal(SIGBUS, CM_NULLPTR);
+      signal(SIGBUS, nullptr);
 #endif
-      signal(SIGILL, CM_NULLPTR);
+      signal(SIGILL, nullptr);
     }
   }
 
@@ -102,7 +102,7 @@ extern "C" void TrapsForSignalsCFunction(int sig)
   cmLoadedCommand::TrapsForSignals(sig);
 }
 
-const char* cmLoadedCommand::LastName = CM_NULLPTR;
+const char* cmLoadedCommand::LastName = nullptr;
 
 bool cmLoadedCommand::InitialPass(std::vector<std::string> const& args,
                                   cmExecutionStatus&)
@@ -118,7 +118,7 @@ bool cmLoadedCommand::InitialPass(std::vector<std::string> const& args,
 
   // create argc and argv and then invoke the command
   int argc = static_cast<int>(args.size());
-  char** argv = CM_NULLPTR;
+  char** argv = nullptr;
   if (argc) {
     argv = (char**)malloc(argc * sizeof(char*));
   }
diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index 2c8157e..6e0e28c 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -401,7 +401,7 @@ void cmLocalGenerator::GenerateInstallRules()
   // Choose a default install configuration.
   std::string default_config = config;
   const char* default_order[] = { "RELEASE", "MINSIZEREL", "RELWITHDEBINFO",
-                                  "DEBUG", CM_NULLPTR };
+                                  "DEBUG", nullptr };
   for (const char** c = default_order; *c && default_config.empty(); ++c) {
     for (std::vector<std::string>::iterator i = configurationTypes.begin();
          i != configurationTypes.end(); ++i) {
@@ -588,7 +588,7 @@ cmGeneratorTarget* cmLocalGenerator::FindLocalNonAliasGeneratorTarget(
   if (ti != this->GeneratorTargetSearchIndex.end()) {
     return ti->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmLocalGenerator::ComputeTargetManifest()
@@ -708,7 +708,7 @@ std::string cmLocalGenerator::GetIncludeFlags(
   // normal flag is repeated for each directory.
   std::string sysFlagVar = "CMAKE_INCLUDE_SYSTEM_FLAG_";
   sysFlagVar += lang;
-  const char* sysIncludeFlag = CM_NULLPTR;
+  const char* sysIncludeFlag = nullptr;
   if (repeatFlag) {
     sysIncludeFlag = this->Makefile->GetDefinition(sysFlagVar);
   }
@@ -1346,7 +1346,7 @@ void cmLocalGenerator::AddArchitectureFlags(std::string& flags,
     target->GetAppleArchs(config, archs);
     const char* sysroot = this->Makefile->GetDefinition("CMAKE_OSX_SYSROOT");
     if (sysroot && sysroot[0] == '/' && !sysroot[1]) {
-      sysroot = CM_NULLPTR;
+      sysroot = nullptr;
     }
     std::string sysrootFlagVar =
       std::string("CMAKE_") + lang + "_SYSROOT_FLAG";
@@ -1743,7 +1743,7 @@ void cmLocalGenerator::AddVisibilityPresetFlags(
   }
 
   std::string warnCMP0063;
-  std::string* pWarnCMP0063 = CM_NULLPTR;
+  std::string* pWarnCMP0063 = nullptr;
   if (target->GetType() != cmStateEnums::SHARED_LIBRARY &&
       target->GetType() != cmStateEnums::MODULE_LIBRARY &&
       !target->IsExecutableWithExports()) {
@@ -1854,7 +1854,7 @@ void cmLocalGenerator::AddPositionIndependentFlags(std::string& flags,
                                                    std::string const& lang,
                                                    int targetType)
 {
-  const char* picFlags = CM_NULLPTR;
+  const char* picFlags = nullptr;
 
   if (targetType == cmStateEnums::EXECUTABLE) {
     std::string flagsVar = "CMAKE_";
@@ -1937,7 +1937,7 @@ void cmLocalGenerator::AppendIPOLinkerFlags(std::string& flags,
 
   const std::string name = "CMAKE_" + lang + "_LINK_OPTIONS_IPO";
   const char* rawFlagsList = this->Makefile->GetDefinition(name);
-  if (rawFlagsList == CM_NULLPTR) {
+  if (rawFlagsList == nullptr) {
     return;
   }
 
@@ -2067,7 +2067,7 @@ const char* cmLocalGenerator::GetFeature(const std::string& feature,
     }
     snp = snp.GetBuildsystemDirectoryParent();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 std::string cmLocalGenerator::GetProjectName() const
@@ -2131,7 +2131,7 @@ void cmLocalGenerator::GenerateTargetInstallRules(
 
     // Include the user-specified pre-install script for this target.
     if (const char* preinstall = (*l)->GetProperty("PRE_INSTALL_SCRIPT")) {
-      cmInstallScriptGenerator g(preinstall, false, CM_NULLPTR, false);
+      cmInstallScriptGenerator g(preinstall, false, nullptr, false);
       g.Generate(os, config, configurationTypes);
     }
 
@@ -2184,7 +2184,7 @@ void cmLocalGenerator::GenerateTargetInstallRules(
 
     // Include the user-specified post-install script for this target.
     if (const char* postinstall = (*l)->GetProperty("POST_INSTALL_SCRIPT")) {
-      cmInstallScriptGenerator g(postinstall, false, CM_NULLPTR, false);
+      cmInstallScriptGenerator g(postinstall, false, nullptr, false);
       g.Generate(os, config, configurationTypes);
     }
   }
diff --git a/Source/cmLocalGenerator.h b/Source/cmLocalGenerator.h
index aaf7d71..85eac0b 100644
--- a/Source/cmLocalGenerator.h
+++ b/Source/cmLocalGenerator.h
@@ -283,8 +283,8 @@ public:
   // Compute object file names.
   std::string GetObjectFileNameWithoutTarget(
     const cmSourceFile& source, std::string const& dir_max,
-    bool* hasSourceExtension = CM_NULLPTR,
-    char const* customOutputExtension = CM_NULLPTR);
+    bool* hasSourceExtension = nullptr,
+    char const* customOutputExtension = nullptr);
 
   /** Fill out the static linker flags for the given target.  */
   void GetStaticLibraryFlags(std::string& flags, std::string const& config,
@@ -312,7 +312,7 @@ public:
 
   virtual void ComputeObjectFilenames(
     std::map<cmSourceFile const*, std::string>& mapping,
-    cmGeneratorTarget const* gt = CM_NULLPTR);
+    cmGeneratorTarget const* gt = nullptr);
 
   bool IsWindowsShell() const;
   bool IsWatcomWMake() const;
diff --git a/Source/cmLocalNinjaGenerator.h b/Source/cmLocalNinjaGenerator.h
index a45e018..f69c530 100644
--- a/Source/cmLocalNinjaGenerator.h
+++ b/Source/cmLocalNinjaGenerator.h
@@ -76,7 +76,7 @@ public:
 
   void ComputeObjectFilenames(
     std::map<cmSourceFile const*, std::string>& mapping,
-    cmGeneratorTarget const* gt = CM_NULLPTR) CM_OVERRIDE;
+    cmGeneratorTarget const* gt = nullptr) CM_OVERRIDE;
 
 protected:
   std::string ConvertToIncludeReference(
diff --git a/Source/cmLocalUnixMakefileGenerator3.cxx b/Source/cmLocalUnixMakefileGenerator3.cxx
index 2d10021..cde2621 100644
--- a/Source/cmLocalUnixMakefileGenerator3.cxx
+++ b/Source/cmLocalUnixMakefileGenerator3.cxx
@@ -348,7 +348,7 @@ void cmLocalUnixMakefileGenerator3::WriteObjectConvenienceRule(
     std::vector<std::string> depends;
     depends.push_back(output);
     std::vector<std::string> no_commands;
-    this->WriteMakeRule(ruleFileStream, CM_NULLPTR, outNoExt, depends,
+    this->WriteMakeRule(ruleFileStream, nullptr, outNoExt, depends,
                         no_commands, true, true);
     inHelp = false;
   }
@@ -718,7 +718,7 @@ void cmLocalUnixMakefileGenerator3::WriteSpecialTargetsTop(
   // Add a fake suffix to keep HP happy.  Must be max 32 chars for SGI make.
   std::vector<std::string> depends;
   depends.push_back(".hpux_make_needs_suffix_list");
-  this->WriteMakeRule(makefileStream, CM_NULLPTR, ".SUFFIXES", depends,
+  this->WriteMakeRule(makefileStream, nullptr, ".SUFFIXES", depends,
                       no_commands, false);
   if (this->IsWatcomWMake()) {
     // Switch on WMake feature, if an error or interrupt occurs during
@@ -1186,7 +1186,7 @@ void cmLocalUnixMakefileGenerator3::AppendEcho(
       line = "";
 
       // Progress appears only on first line.
-      progress = CM_NULLPTR;
+      progress = nullptr;
 
       // Terminate on end-of-string.
       if (*c == '\0') {
@@ -1460,7 +1460,7 @@ bool cmLocalUnixMakefileGenerator3::ScanDependencies(
     std::string lang = *li;
 
     // Create the scanner for this language
-    cmDepends* scanner = CM_NULLPTR;
+    cmDepends* scanner = nullptr;
     if (lang == "C" || lang == "CXX" || lang == "RC" || lang == "ASM" ||
         lang == "CUDA") {
       // TODO: Handle RC (resource files) dependencies correctly.
diff --git a/Source/cmLocalUnixMakefileGenerator3.h b/Source/cmLocalUnixMakefileGenerator3.h
index f64409c..f7b4666 100644
--- a/Source/cmLocalUnixMakefileGenerator3.h
+++ b/Source/cmLocalUnixMakefileGenerator3.h
@@ -108,8 +108,7 @@ public:
     std::string Arg;
   };
   void AppendEcho(std::vector<std::string>& commands, std::string const& text,
-                  EchoColor color = EchoNormal,
-                  EchoProgress const* = CM_NULLPTR);
+                  EchoColor color = EchoNormal, EchoProgress const* = nullptr);
 
   /** Get whether the makefile is to have color.  */
   bool GetColorMakefile() const { return this->ColorMakefile; }
@@ -238,11 +237,11 @@ protected:
                            cmGeneratorTarget* target,
                            std::string const& relative,
                            bool echo_comment = false,
-                           std::ostream* content = CM_NULLPTR);
+                           std::ostream* content = nullptr);
   void AppendCleanCommand(std::vector<std::string>& commands,
                           const std::vector<std::string>& files,
                           cmGeneratorTarget* target,
-                          const char* filename = CM_NULLPTR);
+                          const char* filename = nullptr);
 
   // Helper methods for dependeny updates.
   bool ScanDependencies(
@@ -255,7 +254,7 @@ private:
 
   void ComputeObjectFilenames(
     std::map<cmSourceFile const*, std::string>& mapping,
-    cmGeneratorTarget const* gt = CM_NULLPTR) CM_OVERRIDE;
+    cmGeneratorTarget const* gt = nullptr) CM_OVERRIDE;
 
   friend class cmMakefileTargetGenerator;
   friend class cmMakefileExecutableTargetGenerator;
@@ -272,7 +271,7 @@ private:
     cmGeneratorTarget* Target;
     std::string Language;
     LocalObjectEntry()
-      : Target(CM_NULLPTR)
+      : Target(nullptr)
       , Language()
     {
     }
diff --git a/Source/cmLocale.h b/Source/cmLocale.h
index 9f90a3a..8185883 100644
--- a/Source/cmLocale.h
+++ b/Source/cmLocale.h
@@ -14,7 +14,7 @@ class cmLocaleRAII
 
 public:
   cmLocaleRAII()
-    : OldLocale(setlocale(LC_CTYPE, CM_NULLPTR))
+    : OldLocale(setlocale(LC_CTYPE, nullptr))
   {
     setlocale(LC_CTYPE, "");
   }
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 29999e9..230c210 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -779,7 +779,7 @@ cmSourceFile* cmMakefile::AddCustomCommandToOutput(
   // Make sure there is at least one output.
   if (outputs.empty()) {
     cmSystemTools::Error("Attempt to add a custom rule with no output!");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Validate custom commands.  TODO: More strict?
@@ -790,12 +790,12 @@ cmSourceFile* cmMakefile::AddCustomCommandToOutput(
       std::ostringstream e;
       e << "COMMAND may not contain literal quotes:\n  " << cl[0] << "\n";
       this->IssueMessage(cmake::FATAL_ERROR, e.str());
-      return CM_NULLPTR;
+      return nullptr;
     }
   }
 
   // Choose a source file on which to store the custom command.
-  cmSourceFile* file = CM_NULLPTR;
+  cmSourceFile* file = nullptr;
   if (!commandLines.empty() && !main_dependency.empty()) {
     // The main dependency was specified.  Use it unless a different
     // custom command already used it.
@@ -809,7 +809,7 @@ cmSourceFile* cmMakefile::AddCustomCommandToOutput(
       }
       // The existing custom command is different.  We need to
       // generate a rule file for this new command.
-      file = CM_NULLPTR;
+      file = nullptr;
     } else if (!file) {
       file = this->CreateSource(main_dependency);
     }
@@ -933,7 +933,7 @@ void cmMakefile::AddCustomCommandOldStyle(
     std::vector<std::string> no_byproducts;
     this->AddCustomCommandToTarget(target, no_byproducts, depends,
                                    commandLines, cmTarget::POST_BUILD, comment,
-                                   CM_NULLPTR);
+                                   nullptr);
     return;
   }
 
@@ -951,14 +951,14 @@ void cmMakefile::AddCustomCommandOldStyle(
     if (sourceFiles.find(source)) {
       // The source looks like a real file.  Use it as the main dependency.
       sf = this->AddCustomCommandToOutput(output, depends, source,
-                                          commandLines, comment, CM_NULLPTR);
+                                          commandLines, comment, nullptr);
     } else {
       // The source may not be a real file.  Do not use a main dependency.
       std::string no_main_dependency;
       std::vector<std::string> depends2 = depends;
       depends2.push_back(source);
       sf = this->AddCustomCommandToOutput(output, depends2, no_main_dependency,
-                                          commandLines, comment, CM_NULLPTR);
+                                          commandLines, comment, nullptr);
     }
 
     // If the rule was added to the source (and not a .rule file),
@@ -1759,7 +1759,7 @@ void cmMakefile::RemoveDefinition(const std::string& name)
   cmVariableWatch* vv = this->GetVariableWatch();
   if (vv) {
     vv->VariableAccessed(name, cmVariableWatch::VARIABLE_REMOVED_ACCESS,
-                         CM_NULLPTR, this);
+                         nullptr, this);
   }
 #endif
 }
@@ -1910,7 +1910,7 @@ cmSourceFile* cmMakefile::LinearGetSourceFileWithOutput(
   }
 
   // otherwise return NULL
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmSourceFile* cmMakefile::GetSourceFileWithOutput(
@@ -1926,14 +1926,14 @@ cmSourceFile* cmMakefile::GetSourceFileWithOutput(
   if (o != this->OutputToSource.end()) {
     return (*o).second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
 cmSourceGroup* cmMakefile::GetSourceGroup(
   const std::vector<std::string>& name) const
 {
-  cmSourceGroup* sg = CM_NULLPTR;
+  cmSourceGroup* sg = nullptr;
 
   // first look for source group starting with the same as the one we want
   for (std::vector<cmSourceGroup>::const_iterator sgIt =
@@ -1946,11 +1946,11 @@ cmSourceGroup* cmMakefile::GetSourceGroup(
     }
   }
 
-  if (sg != CM_NULLPTR) {
+  if (sg != nullptr) {
     // iterate through its children to find match source group
     for (unsigned int i = 1; i < name.size(); ++i) {
       sg = sg->LookupChild(name[i].c_str());
-      if (sg == CM_NULLPTR) {
+      if (sg == nullptr) {
         break;
       }
     }
@@ -1968,14 +1968,14 @@ void cmMakefile::AddSourceGroup(const std::string& name, const char* regex)
 void cmMakefile::AddSourceGroup(const std::vector<std::string>& name,
                                 const char* regex)
 {
-  cmSourceGroup* sg = CM_NULLPTR;
+  cmSourceGroup* sg = nullptr;
   std::vector<std::string> currentName;
   int i = 0;
   const int lastElement = static_cast<int>(name.size() - 1);
   for (i = lastElement; i >= 0; --i) {
     currentName.assign(name.begin(), name.begin() + i + 1);
     sg = this->GetSourceGroup(currentName);
-    if (sg != CM_NULLPTR) {
+    if (sg != nullptr) {
       break;
     }
   }
@@ -2003,8 +2003,7 @@ void cmMakefile::AddSourceGroup(const std::vector<std::string>& name,
   }
   // build the whole source group path
   for (++i; i <= lastElement; ++i) {
-    sg->AddChild(
-      cmSourceGroup(name[i].c_str(), CM_NULLPTR, sg->GetFullName()));
+    sg->AddChild(cmSourceGroup(name[i].c_str(), nullptr, sg->GetFullName()));
     sg = sg->LookupChild(name[i].c_str());
   }
 
@@ -2254,7 +2253,7 @@ bool cmMakefile::IsDefinitionSet(const std::string& name) const
     }
   }
 #endif
-  return def != CM_NULLPTR;
+  return def != nullptr;
 }
 
 const char* cmMakefile::GetDefinition(const std::string& name) const
@@ -2563,7 +2562,7 @@ cmake::MessageType cmMakefile::ExpandVariablesInStringNew(
           openstack.pop_back();
           result.append(last, in - last);
           std::string const& lookup = result.substr(var.loc);
-          const char* value = CM_NULLPTR;
+          const char* value = nullptr;
           std::string varresult;
           std::string svalue;
           static const std::string lineVar = "CMAKE_CURRENT_LIST_LINE";
@@ -2619,7 +2618,7 @@ cmake::MessageType cmMakefile::ExpandVariablesInStringNew(
         if (!atOnly) {
           t_lookup lookup;
           const char* next = in + 1;
-          const char* start = CM_NULLPTR;
+          const char* start = nullptr;
           char nextc = *next;
           if (nextc == '{') {
             // Looking for a variable.
@@ -3103,7 +3102,7 @@ cmSourceFile* cmMakefile::GetSource(const std::string& sourceName) const
       return sf;
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmSourceFile* cmMakefile::CreateSource(const std::string& sourceName,
@@ -3304,7 +3303,7 @@ cmVariableWatch* cmMakefile::GetVariableWatch() const
       this->GetCMakeInstance()->GetVariableWatch()) {
     return this->GetCMakeInstance()->GetVariableWatch();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 #endif
 
@@ -3469,7 +3468,7 @@ void cmMakefile::ConfigureString(const std::string& input, std::string& output,
   }
 
   // Perform variable replacements.
-  this->ExpandVariablesInString(output, escapeQuotes, true, atOnly, CM_NULLPTR,
+  this->ExpandVariablesInString(output, escapeQuotes, true, atOnly, nullptr,
                                 -1, true, true);
 }
 
@@ -3609,7 +3608,7 @@ cmTarget* cmMakefile::FindLocalNonAliasTarget(const std::string& name) const
   if (i != this->Targets.end()) {
     return &i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmTest* cmMakefile::CreateTest(const std::string& testName)
@@ -3631,7 +3630,7 @@ cmTest* cmMakefile::GetTest(const std::string& testName) const
   if (mi != this->Tests.end()) {
     return mi->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmMakefile::AddCMakeDependFilesFromUser()
@@ -4089,10 +4088,10 @@ bool cmMakefile::IgnoreErrorsCMP0061() const
 }
 
 #define FEATURE_STRING(F) , #F
-static const char* const C_FEATURES[] = { CM_NULLPTR FOR_EACH_C_FEATURE(
+static const char* const C_FEATURES[] = { nullptr FOR_EACH_C_FEATURE(
   FEATURE_STRING) };
 
-static const char* const CXX_FEATURES[] = { CM_NULLPTR FOR_EACH_CXX_FEATURE(
+static const char* const CXX_FEATURES[] = { nullptr FOR_EACH_CXX_FEATURE(
   FEATURE_STRING) };
 #undef FEATURE_STRING
 
@@ -4200,7 +4199,7 @@ const char* cmMakefile::CompileFeaturesAvailable(const std::string& lang,
       this->GetCMakeInstance()->IssueMessage(cmake::FATAL_ERROR, e.str(),
                                              this->Backtrace);
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   const char* featuresKnown =
@@ -4223,7 +4222,7 @@ const char* cmMakefile::CompileFeaturesAvailable(const std::string& lang,
       this->GetCMakeInstance()->IssueMessage(cmake::FATAL_ERROR, e.str(),
                                              this->Backtrace);
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
   return featuresKnown;
 }
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 059a4e7..46abc7d 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -187,24 +187,26 @@ public:
    * Add a utility to the build.  A utiltity target is a command that
    * is run every time the target is built.
    */
-  cmTarget* AddUtilityCommand(
-    const std::string& utilityName, bool excludeFromAll,
-    const std::vector<std::string>& depends, const char* workingDirectory,
-    const char* command, const char* arg1 = CM_NULLPTR,
-    const char* arg2 = CM_NULLPTR, const char* arg3 = CM_NULLPTR,
-    const char* arg4 = CM_NULLPTR);
+  cmTarget* AddUtilityCommand(const std::string& utilityName,
+                              bool excludeFromAll,
+                              const std::vector<std::string>& depends,
+                              const char* workingDirectory,
+                              const char* command, const char* arg1 = nullptr,
+                              const char* arg2 = nullptr,
+                              const char* arg3 = nullptr,
+                              const char* arg4 = nullptr);
   cmTarget* AddUtilityCommand(
     const std::string& utilityName, bool excludeFromAll,
     const char* workingDirectory, const std::vector<std::string>& depends,
     const cmCustomCommandLines& commandLines, bool escapeOldStyle = true,
-    const char* comment = CM_NULLPTR, bool uses_terminal = false,
+    const char* comment = nullptr, bool uses_terminal = false,
     bool command_expand_lists = false);
   cmTarget* AddUtilityCommand(
     const std::string& utilityName, bool excludeFromAll,
     const char* workingDirectory, const std::vector<std::string>& byproducts,
     const std::vector<std::string>& depends,
     const cmCustomCommandLines& commandLines, bool escapeOldStyle = true,
-    const char* comment = CM_NULLPTR, bool uses_terminal = false,
+    const char* comment = nullptr, bool uses_terminal = false,
     bool command_expand_lists = false);
 
   /**
@@ -272,14 +274,14 @@ public:
   /**
    * Add a root source group for consideration when adding a new source.
    */
-  void AddSourceGroup(const std::string& name, const char* regex = CM_NULLPTR);
+  void AddSourceGroup(const std::string& name, const char* regex = nullptr);
 
   /**
    * Add a source group for consideration when adding a new source.
    * name is tokenized.
    */
   void AddSourceGroup(const std::vector<std::string>& name,
-                      const char* regex = CM_NULLPTR);
+                      const char* regex = nullptr);
 
 #endif
 
@@ -521,7 +523,7 @@ public:
   const char* ExpandVariablesInString(std::string& source) const;
   const char* ExpandVariablesInString(std::string& source, bool escapeQuotes,
                                       bool noEscapes, bool atOnly = false,
-                                      const char* filename = CM_NULLPTR,
+                                      const char* filename = nullptr,
                                       long line = -1, bool removeEmpty = false,
                                       bool replaceAt = false) const;
 
@@ -594,11 +596,11 @@ public:
    */
   bool ExpandArguments(std::vector<cmListFileArgument> const& inArgs,
                        std::vector<std::string>& outArgs,
-                       const char* filename = CM_NULLPTR) const;
+                       const char* filename = nullptr) const;
 
   bool ExpandArguments(std::vector<cmListFileArgument> const& inArgs,
                        std::vector<cmExpandedCommandArgument>& outArgs,
-                       const char* filename = CM_NULLPTR) const;
+                       const char* filename = nullptr) const;
 
   /**
    * Get the instance
@@ -744,7 +746,7 @@ public:
   bool PolicyOptionalWarningEnabled(std::string const& var);
 
   bool AddRequiredTargetFeature(cmTarget* target, const std::string& feature,
-                                std::string* error = CM_NULLPTR) const;
+                                std::string* error = nullptr) const;
 
   bool CompileFeatureKnown(cmTarget const* target, const std::string& feature,
                            std::string& lang, std::string* error) const;
@@ -915,11 +917,11 @@ private:
                                cmSourceFile* source);
 
   bool AddRequiredTargetCFeature(cmTarget* target, const std::string& feature,
-                                 std::string* error = CM_NULLPTR) const;
+                                 std::string* error = nullptr) const;
 
   bool AddRequiredTargetCxxFeature(cmTarget* target,
                                    const std::string& feature,
-                                   std::string* error = CM_NULLPTR) const;
+                                   std::string* error = nullptr) const;
 
   void CheckNeededCLanguage(const std::string& feature, bool& needC90,
                             bool& needC99, bool& needC11) const;
diff --git a/Source/cmMakefileExecutableTargetGenerator.cxx b/Source/cmMakefileExecutableTargetGenerator.cxx
index 359b9fd..b9b3c2f 100644
--- a/Source/cmMakefileExecutableTargetGenerator.cxx
+++ b/Source/cmMakefileExecutableTargetGenerator.cxx
@@ -284,7 +284,7 @@ void cmMakefileExecutableTargetGenerator::WriteDeviceExecutableRule(
   commands1.clear();
 
   // Write the build rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       targetOutputReal, depends, commands,
                                       false);
 
@@ -687,7 +687,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
   }
 
   // Write the build rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       targetFullPathReal, depends, commands,
                                       false);
 
@@ -698,7 +698,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
     depends.clear();
     commands.clear();
     depends.push_back(targetFullPathReal);
-    this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+    this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                         targetFullPath, depends, commands,
                                         false);
   }
diff --git a/Source/cmMakefileLibraryTargetGenerator.cxx b/Source/cmMakefileLibraryTargetGenerator.cxx
index 3d1594b..2faef67 100644
--- a/Source/cmMakefileLibraryTargetGenerator.cxx
+++ b/Source/cmMakefileLibraryTargetGenerator.cxx
@@ -117,7 +117,7 @@ void cmMakefileLibraryTargetGenerator::WriteObjectLibraryRules()
   this->AppendObjectDepends(depends);
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       this->GeneratorTarget->GetName(),
                                       depends, commands, true);
 
@@ -454,7 +454,7 @@ void cmMakefileLibraryTargetGenerator::WriteDeviceLibraryRules(
   std::vector<std::string> outputs(1, targetOutputReal);
 
   // Write the build rule.
-  this->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR, outputs, depends,
+  this->WriteMakeRule(*this->BuildFileStream, nullptr, outputs, depends,
                       commands, false);
 
   // Write the main driver rule to build everything in this target.
@@ -1008,7 +1008,7 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
   }
 
   // Write the build rule.
-  this->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR, outputs, depends,
+  this->WriteMakeRule(*this->BuildFileStream, nullptr, outputs, depends,
                       commands, false);
 
   // Write the main driver rule to build everything in this target.
diff --git a/Source/cmMakefileTargetGenerator.cxx b/Source/cmMakefileTargetGenerator.cxx
index 7938683..b9bcdef 100644
--- a/Source/cmMakefileTargetGenerator.cxx
+++ b/Source/cmMakefileTargetGenerator.cxx
@@ -32,12 +32,12 @@
 
 cmMakefileTargetGenerator::cmMakefileTargetGenerator(cmGeneratorTarget* target)
   : cmCommonTargetGenerator(target)
-  , OSXBundleGenerator(CM_NULLPTR)
-  , MacOSXContentGenerator(CM_NULLPTR)
+  , OSXBundleGenerator(nullptr)
+  , MacOSXContentGenerator(nullptr)
 {
-  this->BuildFileStream = CM_NULLPTR;
-  this->InfoFileStream = CM_NULLPTR;
-  this->FlagFileStream = CM_NULLPTR;
+  this->BuildFileStream = nullptr;
+  this->InfoFileStream = nullptr;
+  this->FlagFileStream = nullptr;
   this->CustomCommandDriver = OnBuild;
   this->LocalGenerator =
     static_cast<cmLocalUnixMakefileGenerator3*>(target->GetLocalGenerator());
@@ -60,7 +60,7 @@ cmMakefileTargetGenerator::~cmMakefileTargetGenerator()
 cmMakefileTargetGenerator* cmMakefileTargetGenerator::New(
   cmGeneratorTarget* tgt)
 {
-  cmMakefileTargetGenerator* result = CM_NULLPTR;
+  cmMakefileTargetGenerator* result = nullptr;
 
   switch (tgt->GetType()) {
     case cmStateEnums::EXECUTABLE:
@@ -139,7 +139,7 @@ void cmMakefileTargetGenerator::WriteTargetBuildRules()
 
     cmSystemTools::ExpandListArgument(
       cge->Evaluate(this->LocalGenerator, config, false, this->GeneratorTarget,
-                    CM_NULLPTR, CM_NULLPTR),
+                    nullptr, nullptr),
       this->CleanFiles);
   }
 
@@ -337,7 +337,7 @@ void cmMakefileTargetGenerator::MacOSXContentGeneratorType::operator()(
     output, cmOutputConverter::SHELL);
   commands.push_back(copyCommand);
   this->Generator->LocalGenerator->WriteMakeRule(
-    *this->Generator->BuildFileStream, CM_NULLPTR, output, depends, commands,
+    *this->Generator->BuildFileStream, nullptr, output, depends, commands,
     false);
   this->Generator->ExtraFiles.insert(output);
 }
@@ -711,7 +711,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
   }
 
   // Write the rule.
-  this->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR, outputs, depends,
+  this->WriteMakeRule(*this->BuildFileStream, nullptr, outputs, depends,
                       commands);
 
   bool do_preprocess_rules = lang_has_preprocessor &&
@@ -770,7 +770,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
         commands.push_back(cmd);
       }
 
-      this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+      this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                           relativeObjI, force_depends,
                                           commands, false);
     }
@@ -818,7 +818,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
         commands.push_back(cmd);
       }
 
-      this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+      this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                           relativeObjS, force_depends,
                                           commands, false);
     }
@@ -830,7 +830,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
   objectRequires += ".requires";
   std::vector<std::string> p_depends;
   // always provide an empty requires target
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       objectRequires, p_depends, no_commands,
                                       true);
 
@@ -848,14 +848,14 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
 
   p_depends.clear();
   p_depends.push_back(objectRequires);
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       objectProvides, p_depends, r_commands,
                                       true);
 
   // write the provides.build rule dependency on the obj file
   p_depends.clear();
   p_depends.push_back(relativeObj);
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR, temp,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr, temp,
                                       p_depends, no_commands, false);
 }
 
@@ -881,7 +881,7 @@ void cmMakefileTargetGenerator::WriteTargetRequiresRules()
   }
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       depTarget, depends, no_commands, true);
 }
 
@@ -903,7 +903,7 @@ void cmMakefileTargetGenerator::WriteTargetCleanRules()
     this->LocalGenerator->GetBinaryDirectory());
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       cleanTarget, depends, commands, true);
 }
 
@@ -960,7 +960,7 @@ bool cmMakefileTargetGenerator::WriteMakeRule(
     if (!o_symbolic) {
       output_commands.push_back("@$(CMAKE_COMMAND) -E touch_nocreate " + out);
     }
-    this->LocalGenerator->WriteMakeRule(os, CM_NULLPTR, *o, output_depends,
+    this->LocalGenerator->WriteMakeRule(os, nullptr, *o, output_depends,
                                         output_commands, o_symbolic, in_help);
 
     if (!o_symbolic) {
@@ -1107,7 +1107,7 @@ void cmMakefileTargetGenerator::WriteTargetDependRules()
   }
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       depTarget, depends, commands, true);
 }
 
@@ -1170,8 +1170,8 @@ void cmMakefileTargetGenerator::GenerateCustomRuleFile(
 
   // Write the rule.
   const std::vector<std::string>& outputs = ccg.GetOutputs();
-  bool symbolic = this->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
-                                      outputs, depends, commands);
+  bool symbolic = this->WriteMakeRule(*this->BuildFileStream, nullptr, outputs,
+                                      depends, commands);
 
   // If the rule has changed make sure the output is rebuilt.
   if (!symbolic) {
@@ -1342,7 +1342,7 @@ void cmMakefileTargetGenerator::WriteTargetDriverRule(
   std::vector<std::string> depends;
   depends.push_back(main_output);
 
-  const char* comment = CM_NULLPTR;
+  const char* comment = nullptr;
   if (relink) {
     // Setup the comment for the preinstall driver.
     comment = "Rule to relink during preinstall.";
diff --git a/Source/cmMakefileUtilityTargetGenerator.cxx b/Source/cmMakefileUtilityTargetGenerator.cxx
index a7c5d27..46df0d8 100644
--- a/Source/cmMakefileUtilityTargetGenerator.cxx
+++ b/Source/cmMakefileUtilityTargetGenerator.cxx
@@ -95,7 +95,7 @@ void cmMakefileUtilityTargetGenerator::WriteRuleFiles()
   }
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       this->GeneratorTarget->GetName(),
                                       depends, commands, true);
 
diff --git a/Source/cmMarkAsAdvancedCommand.cxx b/Source/cmMarkAsAdvancedCommand.cxx
index 14fd96f..45c59b9 100644
--- a/Source/cmMarkAsAdvancedCommand.cxx
+++ b/Source/cmMarkAsAdvancedCommand.cxx
@@ -34,7 +34,7 @@ bool cmMarkAsAdvancedCommand::InitialPass(std::vector<std::string> const& args,
     cmState* state = this->Makefile->GetState();
     if (!state->GetCacheEntryValue(variable)) {
       this->Makefile->GetCMakeInstance()->AddCacheEntry(
-        variable, CM_NULLPTR, CM_NULLPTR, cmStateEnums::UNINITIALIZED);
+        variable, nullptr, nullptr, cmStateEnums::UNINITIALIZED);
       overwrite = true;
     }
     if (!state->GetCacheEntryValue(variable)) {
diff --git a/Source/cmNinjaNormalTargetGenerator.cxx b/Source/cmNinjaNormalTargetGenerator.cxx
index 1e0bf8d..f029a3f 100644
--- a/Source/cmNinjaNormalTargetGenerator.cxx
+++ b/Source/cmNinjaNormalTargetGenerator.cxx
@@ -142,7 +142,7 @@ const char* cmNinjaNormalTargetGenerator::GetVisibleTypeName() const
     case cmStateEnums::EXECUTABLE:
       return "executable";
     default:
-      return CM_NULLPTR;
+      return nullptr;
   }
 }
 
diff --git a/Source/cmNinjaTargetGenerator.cxx b/Source/cmNinjaTargetGenerator.cxx
index 7cc6ede..ba44f0e 100644
--- a/Source/cmNinjaTargetGenerator.cxx
+++ b/Source/cmNinjaTargetGenerator.cxx
@@ -47,14 +47,14 @@ cmNinjaTargetGenerator* cmNinjaTargetGenerator::New(cmGeneratorTarget* target)
       return new cmNinjaUtilityTargetGenerator(target);
 
     default:
-      return CM_NULLPTR;
+      return nullptr;
   }
 }
 
 cmNinjaTargetGenerator::cmNinjaTargetGenerator(cmGeneratorTarget* target)
   : cmCommonTargetGenerator(target)
-  , MacOSXContentGenerator(CM_NULLPTR)
-  , OSXBundleGenerator(CM_NULLPTR)
+  , MacOSXContentGenerator(nullptr)
+  , OSXBundleGenerator(nullptr)
   , MacContentFolders()
   , LocalGenerator(
       static_cast<cmLocalNinjaGenerator*>(target->GetLocalGenerator()))
diff --git a/Source/cmOSXBundleGenerator.cxx b/Source/cmOSXBundleGenerator.cxx
index beddc6e..c3d049b 100644
--- a/Source/cmOSXBundleGenerator.cxx
+++ b/Source/cmOSXBundleGenerator.cxx
@@ -21,7 +21,7 @@ cmOSXBundleGenerator::cmOSXBundleGenerator(cmGeneratorTarget* target,
   , Makefile(target->Target->GetMakefile())
   , LocalGenerator(target->GetLocalGenerator())
   , ConfigName(configName)
-  , MacContentFolders(CM_NULLPTR)
+  , MacContentFolders(nullptr)
 {
   if (this->MustSkip()) {
     return;
diff --git a/Source/cmOrderDirectories.h b/Source/cmOrderDirectories.h
index 3a0637a..61c7a03 100644
--- a/Source/cmOrderDirectories.h
+++ b/Source/cmOrderDirectories.h
@@ -26,7 +26,7 @@ public:
                      const char* purpose);
   ~cmOrderDirectories();
   void AddRuntimeLibrary(std::string const& fullPath,
-                         const char* soname = CM_NULLPTR);
+                         const char* soname = nullptr);
   void AddLinkLibrary(std::string const& fullPath);
   void AddUserDirectories(std::vector<std::string> const& extra);
   void AddLanguageDirectories(std::vector<std::string> const& dirs);
diff --git a/Source/cmOutputRequiredFilesCommand.cxx b/Source/cmOutputRequiredFilesCommand.cxx
index 93d2c14..2fd266a 100644
--- a/Source/cmOutputRequiredFilesCommand.cxx
+++ b/Source/cmOutputRequiredFilesCommand.cxx
@@ -31,7 +31,7 @@ public:
    */
   cmDependInformation()
     : DependDone(false)
-    , SourceFile(CM_NULLPTR)
+    , SourceFile(nullptr)
   {
   }
 
@@ -157,7 +157,7 @@ public:
    */
   const cmDependInformation* FindDependencies(const char* file)
   {
-    cmDependInformation* info = this->GetDependInformation(file, CM_NULLPTR);
+    cmDependInformation* info = this->GetDependInformation(file, nullptr);
     this->GenerateDependInformation(info);
     return info;
   }
@@ -202,7 +202,7 @@ protected:
             message += includeFile;
             message += " for file ";
             message += info->FullPath;
-            cmSystemTools::Error(message.c_str(), CM_NULLPTR);
+            cmSystemTools::Error(message.c_str(), nullptr);
           }
           continue;
         }
@@ -328,7 +328,7 @@ protected:
 
     // See if the cmSourceFile for it has any files specified as
     // dependency hints.
-    if (info->SourceFile != CM_NULLPTR) {
+    if (info->SourceFile != nullptr) {
 
       // Get the cmSourceFile corresponding to this.
       const cmSourceFile& cFile = *(info->SourceFile);
diff --git a/Source/cmPipeConnection.cxx b/Source/cmPipeConnection.cxx
index cc82438..dd9174c 100644
--- a/Source/cmPipeConnection.cxx
+++ b/Source/cmPipeConnection.cxx
@@ -30,7 +30,7 @@ void cmPipeConnection::Connect(uv_stream_t* server)
   auto client = reinterpret_cast<uv_stream_t*>(this->ClientPipe);
   if (uv_accept(server, client) != 0) {
     uv_close(reinterpret_cast<uv_handle_t*>(client), &on_close_delete);
-    this->ClientPipe = CM_NULLPTR;
+    this->ClientPipe = nullptr;
     return;
   }
   this->ReadStream = client;
diff --git a/Source/cmPolicies.cxx b/Source/cmPolicies.cxx
index da3edd4..76b8ba1 100644
--- a/Source/cmPolicies.cxx
+++ b/Source/cmPolicies.cxx
@@ -62,9 +62,9 @@ static const char* idToString(cmPolicies::PolicyID id)
     CM_FOR_EACH_POLICY_ID(POLICY_CASE)
 #undef POLICY_CASE
     case cmPolicies::CMPCOUNT:
-      return CM_NULLPTR;
+      return nullptr;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static const char* idToVersion(cmPolicies::PolicyID id)
@@ -76,9 +76,9 @@ static const char* idToVersion(cmPolicies::PolicyID id)
     CM_FOR_EACH_POLICY_ID_VERSION(POLICY_CASE)
 #undef POLICY_CASE
     case cmPolicies::CMPCOUNT:
-      return CM_NULLPTR;
+      return nullptr;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static bool isPolicyNewerThan(cmPolicies::PolicyID id, unsigned int majorV,
@@ -108,9 +108,9 @@ const char* idToShortDescription(cmPolicies::PolicyID id)
     CM_FOR_EACH_POLICY_ID_DOC(POLICY_CASE)
 #undef POLICY_CASE
     case cmPolicies::CMPCOUNT:
-      return CM_NULLPTR;
+      return nullptr;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static void DiagnoseAncientPolicies(
diff --git a/Source/cmProcessTools.cxx b/Source/cmProcessTools.cxx
index de7b061..67b4a97 100644
--- a/Source/cmProcessTools.cxx
+++ b/Source/cmProcessTools.cxx
@@ -10,22 +10,22 @@ void cmProcessTools::RunProcess(struct cmsysProcess_s* cp, OutputParser* out,
                                 OutputParser* err, Encoding encoding)
 {
   cmsysProcess_Execute(cp);
-  char* data = CM_NULLPTR;
+  char* data = nullptr;
   int length = 0;
   int p;
   cmProcessOutput processOutput(encoding);
   std::string strdata;
   while ((out || err) &&
-         (p = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR), p)) {
+         (p = cmsysProcess_WaitForData(cp, &data, &length, nullptr), p)) {
     if (out && p == cmsysProcess_Pipe_STDOUT) {
       processOutput.DecodeText(data, length, strdata, 1);
       if (!out->Process(strdata.c_str(), int(strdata.size()))) {
-        out = CM_NULLPTR;
+        out = nullptr;
       }
     } else if (err && p == cmsysProcess_Pipe_STDERR) {
       processOutput.DecodeText(data, length, strdata, 2);
       if (!err->Process(strdata.c_str(), int(strdata.size()))) {
-        err = CM_NULLPTR;
+        err = nullptr;
       }
     }
   }
@@ -41,12 +41,12 @@ void cmProcessTools::RunProcess(struct cmsysProcess_s* cp, OutputParser* out,
       out->Process(strdata.c_str(), int(strdata.size()));
     }
   }
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
 }
 
 cmProcessTools::LineParser::LineParser(char sep, bool ignoreCR)
-  : Log(CM_NULLPTR)
-  , Prefix(CM_NULLPTR)
+  : Log(nullptr)
+  , Prefix(nullptr)
   , Separator(sep)
   , LineEnd('\0')
   , IgnoreCR(ignoreCR)
diff --git a/Source/cmProcessTools.h b/Source/cmProcessTools.h
index e7d9a10..4119115 100644
--- a/Source/cmProcessTools.h
+++ b/Source/cmProcessTools.h
@@ -70,7 +70,7 @@ public:
   class OutputLogger : public LineParser
   {
   public:
-    OutputLogger(std::ostream& log, const char* prefix = CM_NULLPTR)
+    OutputLogger(std::ostream& log, const char* prefix = nullptr)
     {
       this->SetLog(&log, prefix);
     }
@@ -81,7 +81,7 @@ public:
 
   /** Run a process and send output to given parsers.  */
   static void RunProcess(struct cmsysProcess_s* cp, OutputParser* out,
-                         OutputParser* err = CM_NULLPTR,
+                         OutputParser* err = nullptr,
                          Encoding encoding = cmProcessOutput::Auto);
 };
 
diff --git a/Source/cmProperty.cxx b/Source/cmProperty.cxx
index 222afb4..4e2f470 100644
--- a/Source/cmProperty.cxx
+++ b/Source/cmProperty.cxx
@@ -24,5 +24,5 @@ const char* cmProperty::GetValue() const
   if (this->ValueHasBeenSet) {
     return this->Value.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
diff --git a/Source/cmPropertyMap.cxx b/Source/cmPropertyMap.cxx
index 1e089d1..34ce283 100644
--- a/Source/cmPropertyMap.cxx
+++ b/Source/cmPropertyMap.cxx
@@ -59,7 +59,7 @@ const char* cmPropertyMap::GetPropertyValue(const std::string& name) const
 
   cmPropertyMap::const_iterator it = this->find(name);
   if (it == this->end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return it->second.GetValue();
 }
diff --git a/Source/cmQTWrapCPPCommand.cxx b/Source/cmQTWrapCPPCommand.cxx
index de9e545..ae1fdfa 100644
--- a/Source/cmQTWrapCPPCommand.cxx
+++ b/Source/cmQTWrapCPPCommand.cxx
@@ -78,7 +78,7 @@ bool cmQTWrapCPPCommand::InitialPass(std::vector<std::string> const& args,
       depends.push_back(hname);
 
       std::string no_main_dependency;
-      const char* no_working_dir = CM_NULLPTR;
+      const char* no_working_dir = nullptr;
       this->Makefile->AddCustomCommandToOutput(
         newName, depends, no_main_dependency, commandLines, "Qt Wrapped File",
         no_working_dir);
diff --git a/Source/cmQTWrapUICommand.cxx b/Source/cmQTWrapUICommand.cxx
index d3c6631..3d586d6 100644
--- a/Source/cmQTWrapUICommand.cxx
+++ b/Source/cmQTWrapUICommand.cxx
@@ -109,8 +109,8 @@ bool cmQTWrapUICommand::InitialPass(std::vector<std::string> const& args,
       std::vector<std::string> depends;
       depends.push_back(uiName);
       std::string no_main_dependency;
-      const char* no_comment = CM_NULLPTR;
-      const char* no_working_dir = CM_NULLPTR;
+      const char* no_comment = nullptr;
+      const char* no_working_dir = nullptr;
       this->Makefile->AddCustomCommandToOutput(
         hName, depends, no_main_dependency, hCommandLines, no_comment,
         no_working_dir);
diff --git a/Source/cmQtAutoGeneratorCommon.cxx b/Source/cmQtAutoGeneratorCommon.cxx
index 3e1b58c..a8e6b96 100644
--- a/Source/cmQtAutoGeneratorCommon.cxx
+++ b/Source/cmQtAutoGeneratorCommon.cxx
@@ -38,7 +38,7 @@ static bool RccListInputsQt4(const std::string& fileName,
       osst << ifs.rdbuf();
       qrcContents = osst.str();
     } else {
-      if (errorMessage != CM_NULLPTR) {
+      if (errorMessage != nullptr) {
         std::ostringstream ost;
         ost << "AutoRcc: Error: Rcc file not readable:\n"
             << cmQtAutoGeneratorCommon::Quoted(fileName) << "\n";
@@ -98,7 +98,7 @@ static bool RccListInputsQt5(const std::string& rccCommand,
     int retVal = 0;
     bool result =
       cmSystemTools::RunSingleCommand(command, &rccStdOut, &rccStdErr, &retVal,
-                                      CM_NULLPTR, cmSystemTools::OUTPUT_NONE);
+                                      nullptr, cmSystemTools::OUTPUT_NONE);
     if (result && retVal == 0 &&
         rccStdOut.find("--list") != std::string::npos) {
       hasDashDashList = true;
@@ -117,10 +117,10 @@ static bool RccListInputsQt5(const std::string& rccCommand,
     command.push_back(fileName);
     result =
       cmSystemTools::RunSingleCommand(command, &rccStdOut, &rccStdErr, &retVal,
-                                      CM_NULLPTR, cmSystemTools::OUTPUT_NONE);
+                                      nullptr, cmSystemTools::OUTPUT_NONE);
   }
   if (!result || retVal) {
-    if (errorMessage != CM_NULLPTR) {
+    if (errorMessage != nullptr) {
       std::ostringstream ost;
       ost << "AutoRcc: Error: Rcc list process for " << fileName
           << " failed:\n"
@@ -153,7 +153,7 @@ static bool RccListInputsQt5(const std::string& rccCommand,
 
         std::string::size_type pos = eline.find(searchString);
         if (pos == std::string::npos) {
-          if (errorMessage != CM_NULLPTR) {
+          if (errorMessage != nullptr) {
             std::ostringstream ost;
             ost << "AutoRcc: Error: Rcc lists unparsable output:\n"
                 << cmQtAutoGeneratorCommon::Quoted(eline) << "\n";
@@ -205,7 +205,7 @@ bool cmQtAutoGeneratorCommon::RccListInputs(const std::string& qtMajorVersion,
       allGood = RccListInputsQt5(rccCommand, fileName, files, errorMessage);
     }
   } else {
-    if (errorMessage != CM_NULLPTR) {
+    if (errorMessage != nullptr) {
       std::ostringstream ost;
       ost << "AutoRcc: Error: Rcc file does not exist:\n"
           << cmQtAutoGeneratorCommon::Quoted(fileName) << "\n";
diff --git a/Source/cmQtAutoGeneratorCommon.h b/Source/cmQtAutoGeneratorCommon.h
index a131baf..b5ace1c 100644
--- a/Source/cmQtAutoGeneratorCommon.h
+++ b/Source/cmQtAutoGeneratorCommon.h
@@ -33,7 +33,7 @@ public:
                             const std::string& rccCommand,
                             const std::string& fileName,
                             std::vector<std::string>& files,
-                            std::string* errorMessage = CM_NULLPTR);
+                            std::string* errorMessage = nullptr);
 };
 
 #endif
diff --git a/Source/cmQtAutoGeneratorInitializer.cxx b/Source/cmQtAutoGeneratorInitializer.cxx
index a8e2bca..d943b8b 100644
--- a/Source/cmQtAutoGeneratorInitializer.cxx
+++ b/Source/cmQtAutoGeneratorInitializer.cxx
@@ -33,7 +33,7 @@
 
 inline static const char* SafeString(const char* value)
 {
-  return (value != CM_NULLPTR) ? value : "";
+  return (value != nullptr) ? value : "";
 }
 
 static std::string GetSafeProperty(cmGeneratorTarget const* target,
@@ -86,7 +86,7 @@ static std::string GetQtMajorVersion(cmGeneratorTarget const* target)
   }
   const char* targetQtVersion =
     target->GetLinkInterfaceDependentStringProperty("QT_MAJOR_VERSION", "");
-  if (targetQtVersion != CM_NULLPTR) {
+  if (targetQtVersion != nullptr) {
     qtMajorVersion = targetQtVersion;
   }
   return qtMajorVersion;
@@ -106,7 +106,7 @@ static std::string GetQtMinorVersion(cmGeneratorTarget const* target,
 
   const char* targetQtVersion =
     target->GetLinkInterfaceDependentStringProperty("QT_MINOR_VERSION", "");
-  if (targetQtVersion != CM_NULLPTR) {
+  if (targetQtVersion != nullptr) {
     qtMinorVersion = targetQtVersion;
   }
   return qtMinorVersion;
@@ -148,12 +148,12 @@ static void GetCompileDefinitionsAndDirectories(
 }
 
 static std::vector<std::string> GetConfigurations(
-  cmMakefile* makefile, std::string* config = CM_NULLPTR)
+  cmMakefile* makefile, std::string* config = nullptr)
 {
   std::vector<std::string> configs;
   {
     std::string cfg = makefile->GetConfigurations(configs);
-    if (config != CM_NULLPTR) {
+    if (config != nullptr) {
       *config = cfg;
     }
   }
@@ -204,10 +204,10 @@ static void AddDefinitionEscaped(cmMakefile* makefile, const char* key,
 static bool AddToSourceGroup(cmMakefile* makefile, const std::string& fileName,
                              cmQtAutoGeneratorCommon::GeneratorType genType)
 {
-  cmSourceGroup* sourceGroup = CM_NULLPTR;
+  cmSourceGroup* sourceGroup = nullptr;
   // Acquire source group
   {
-    const char* groupName = CM_NULLPTR;
+    const char* groupName = nullptr;
     // Use generator specific group name
     switch (genType) {
       case cmQtAutoGeneratorCommon::MOC:
@@ -222,27 +222,27 @@ static bool AddToSourceGroup(cmMakefile* makefile, const std::string& fileName,
         break;
     }
     // Use default group name on demand
-    if ((groupName == CM_NULLPTR) || (*groupName == 0)) {
+    if ((groupName == nullptr) || (*groupName == 0)) {
       groupName =
         makefile->GetState()->GetGlobalProperty("AUTOGEN_SOURCE_GROUP");
     }
     // Generate a source group on demand
-    if ((groupName != CM_NULLPTR) && (*groupName != 0)) {
+    if ((groupName != nullptr) && (*groupName != 0)) {
       {
         const char* delimiter =
           makefile->GetDefinition("SOURCE_GROUP_DELIMITER");
-        if (delimiter == CM_NULLPTR) {
+        if (delimiter == nullptr) {
           delimiter = "\\";
         }
         std::vector<std::string> folders =
           cmSystemTools::tokenize(groupName, delimiter);
         sourceGroup = makefile->GetSourceGroup(folders);
-        if (sourceGroup == CM_NULLPTR) {
+        if (sourceGroup == nullptr) {
           makefile->AddSourceGroup(folders);
           sourceGroup = makefile->GetSourceGroup(folders);
         }
       }
-      if (sourceGroup == CM_NULLPTR) {
+      if (sourceGroup == nullptr) {
         cmSystemTools::Error(
           "Autogen: Could not create or find source group: ",
           cmQtAutoGeneratorCommon::Quoted(groupName).c_str());
@@ -250,7 +250,7 @@ static bool AddToSourceGroup(cmMakefile* makefile, const std::string& fileName,
       }
     }
   }
-  if (sourceGroup != CM_NULLPTR) {
+  if (sourceGroup != nullptr) {
     sourceGroup->AddGroupFile(fileName);
   }
   return true;
@@ -449,14 +449,14 @@ static void SetupAutoTargetMoc(cmGeneratorTarget const* target,
 
     if (qtMajorVersion == "5") {
       cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt5::moc");
-      if (tgt != CM_NULLPTR) {
+      if (tgt != nullptr) {
         mocExec = SafeString(tgt->ImportedGetLocation(""));
       } else {
         err = "AUTOMOC: Qt5::moc target not found";
       }
     } else if (qtMajorVersion == "4") {
       cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt4::moc");
-      if (tgt != CM_NULLPTR) {
+      if (tgt != nullptr) {
         mocExec = SafeString(tgt->ImportedGetLocation(""));
       } else {
         err = "AUTOMOC: Qt4::moc target not found";
@@ -565,14 +565,14 @@ static void SetupAutoTargetUic(cmGeneratorTarget const* target,
 
     if (qtMajorVersion == "5") {
       cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt5::uic");
-      if (tgt != CM_NULLPTR) {
+      if (tgt != nullptr) {
         uicExec = SafeString(tgt->ImportedGetLocation(""));
       } else {
         // Project does not use Qt5Widgets, but has AUTOUIC ON anyway
       }
     } else if (qtMajorVersion == "4") {
       cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt4::uic");
-      if (tgt != CM_NULLPTR) {
+      if (tgt != nullptr) {
         uicExec = SafeString(tgt->ImportedGetLocation(""));
       } else {
         err = "AUTOUIC: Qt4::uic target not found";
@@ -599,14 +599,14 @@ static std::string RccGetExecutable(cmGeneratorTarget const* target,
   cmLocalGenerator* localGen = target->GetLocalGenerator();
   if (qtMajorVersion == "5") {
     cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt5::rcc");
-    if (tgt != CM_NULLPTR) {
+    if (tgt != nullptr) {
       rccExec = SafeString(tgt->ImportedGetLocation(""));
     } else {
       err = "AUTORCC: Qt5::rcc target not found";
     }
   } else if (qtMajorVersion == "4") {
     cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt4::rcc");
-    if (tgt != CM_NULLPTR) {
+    if (tgt != nullptr) {
       rccExec = SafeString(tgt->ImportedGetLocation(""));
     } else {
       err = "AUTORCC: Qt4::rcc target not found";
@@ -839,7 +839,7 @@ void cmQtAutoGeneratorInitializer::InitializeAutogenTarget(
     for (std::set<std::string>::const_iterator it = utils.begin();
          it != utils.end(); ++it) {
       const std::string& targetName = *it;
-      if (makefile->FindTargetToUse(targetName) != CM_NULLPTR) {
+      if (makefile->FindTargetToUse(targetName) != nullptr) {
         autogenDependsSet.insert(targetName);
       }
     }
@@ -851,7 +851,7 @@ void cmQtAutoGeneratorInitializer::InitializeAutogenTarget(
     for (cmTarget::LinkLibraryVectorType::const_iterator it = libVec.begin();
          it != libVec.end(); ++it) {
       const std::string& libName = it->first;
-      if (makefile->FindTargetToUse(libName) != CM_NULLPTR) {
+      if (makefile->FindTargetToUse(libName) != nullptr) {
         autogenDependsSet.insert(libName);
       }
     }
@@ -973,7 +973,7 @@ void cmQtAutoGeneratorInitializer::InitializeAutogenTarget(
       for (std::vector<std::string>::const_iterator it =
              autogenDepends.begin();
            it != autogenDepends.end(); ++it) {
-        if (makefile->FindTargetToUse(*it) != CM_NULLPTR) {
+        if (makefile->FindTargetToUse(*it) != nullptr) {
           usePRE_BUILD = false;
           break;
         }
@@ -1004,15 +1004,15 @@ void cmQtAutoGeneratorInitializer::InitializeAutogenTarget(
     {
       const char* autogenFolder =
         makefile->GetState()->GetGlobalProperty("AUTOMOC_TARGETS_FOLDER");
-      if (autogenFolder == CM_NULLPTR) {
+      if (autogenFolder == nullptr) {
         autogenFolder =
           makefile->GetState()->GetGlobalProperty("AUTOGEN_TARGETS_FOLDER");
       }
       // Inherit FOLDER property from target (#13688)
-      if (autogenFolder == CM_NULLPTR) {
+      if (autogenFolder == nullptr) {
         autogenFolder = target->Target->GetProperty("FOLDER");
       }
-      if ((autogenFolder != CM_NULLPTR) && (*autogenFolder != '\0')) {
+      if ((autogenFolder != nullptr) && (*autogenFolder != '\0')) {
         autogenTarget->SetProperty("FOLDER", autogenFolder);
       }
     }
diff --git a/Source/cmQtAutoGenerators.cxx b/Source/cmQtAutoGenerators.cxx
index 65ea048..db9afa3 100644
--- a/Source/cmQtAutoGenerators.cxx
+++ b/Source/cmQtAutoGenerators.cxx
@@ -81,7 +81,7 @@ static void InfoGet(cmMakefile* makefile, const char* key,
 static void InfoGetConfig(cmMakefile* makefile, const char* key,
                           const std::string& config, std::string& value)
 {
-  const char* valueConf = CM_NULLPTR;
+  const char* valueConf = nullptr;
   {
     std::string keyConf = key;
     if (!config.empty()) {
@@ -90,7 +90,7 @@ static void InfoGetConfig(cmMakefile* makefile, const char* key,
     }
     valueConf = makefile->GetDefinition(keyConf);
   }
-  if (valueConf == CM_NULLPTR) {
+  if (valueConf == nullptr) {
     valueConf = makefile->GetSafeDefinition(key);
   }
   value = valueConf;
@@ -817,7 +817,7 @@ bool cmQtAutoGenerators::MocRequired(const std::string& contentText,
     if (contentText.find(filter.first) != std::string::npos) {
       if (filter.second.find(contentText)) {
         // Return macro name on demand
-        if (macroName != CM_NULLPTR) {
+        if (macroName != nullptr) {
           *macroName = filter.first;
         }
         return true;
@@ -939,7 +939,7 @@ void cmQtAutoGenerators::UicParseContent(
   }
 
   const char* contentChars = contentText.c_str();
-  if (strstr(contentChars, "ui_") != CM_NULLPTR) {
+  if (strstr(contentChars, "ui_") != nullptr) {
     while (this->UicRegExpInclude.find(contentChars)) {
       uisIncluded[absFilename].push_back(this->UicRegExpInclude.match(1));
       contentChars += this->UicRegExpInclude.end();
@@ -973,7 +973,7 @@ bool cmQtAutoGenerators::MocParseSourceContent(
   // and if the string search already fails, we don't have to try the
   // expensive regexp
   const char* contentChars = contentText.c_str();
-  if (strstr(contentChars, "moc") != CM_NULLPTR) {
+  if (strstr(contentChars, "moc") != nullptr) {
     // Iterate over all included moc files
     while (this->MocRegExpInclude.find(contentChars)) {
       const std::string incString = this->MocRegExpInclude.match(1);
@@ -1741,13 +1741,13 @@ bool cmQtAutoGenerators::RccGenerateFile(const std::string& rccInputFile,
               readFiles, &error)) {
           files = &readFiles;
         } else {
-          files = CM_NULLPTR;
+          files = nullptr;
           this->LogError(error);
           this->RccRunFailed = true;
         }
       }
       // Test if any input file is newer than the build file
-      if (files != CM_NULLPTR) {
+      if (files != nullptr) {
         for (std::vector<std::string>::const_iterator it = files->begin();
              it != files->end(); ++it) {
           if (FileAbsentOrOlder(rccBuildFile, *it)) {
@@ -2043,7 +2043,7 @@ bool cmQtAutoGenerators::RunCommand(const std::vector<std::string>& command,
   // Execute command
   int retVal = 0;
   bool res = cmSystemTools::RunSingleCommand(
-    command, &output, &output, &retVal, CM_NULLPTR,
+    command, &output, &output, &retVal, nullptr,
     verbose ? cmSystemTools::OUTPUT_MERGE : cmSystemTools::OUTPUT_NONE);
   return (res && (retVal == 0));
 }
diff --git a/Source/cmQtAutoGenerators.h b/Source/cmQtAutoGenerators.h
index ce5db4a..a8eb961 100644
--- a/Source/cmQtAutoGenerators.h
+++ b/Source/cmQtAutoGenerators.h
@@ -59,7 +59,7 @@ private:
 
   // -- Content analysis
   bool MocRequired(const std::string& contentText,
-                   std::string* macroName = CM_NULLPTR);
+                   std::string* macroName = nullptr);
   void MocFindDepends(
     const std::string& absFilename, const std::string& contentText,
     std::map<std::string, std::set<std::string> >& mocDepends);
diff --git a/Source/cmScriptGenerator.cxx b/Source/cmScriptGenerator.cxx
index 753a1ba..768e15a 100644
--- a/Source/cmScriptGenerator.cxx
+++ b/Source/cmScriptGenerator.cxx
@@ -10,7 +10,7 @@ cmScriptGenerator::cmScriptGenerator(
   : RuntimeConfigVariable(config_var)
   , Configurations(configurations)
   , ConfigurationName("")
-  , ConfigurationTypes(CM_NULLPTR)
+  , ConfigurationTypes(nullptr)
   , ActionsPerConfig(false)
 {
 }
@@ -27,7 +27,7 @@ void cmScriptGenerator::Generate(
   this->ConfigurationTypes = &configurationTypes;
   this->GenerateScript(os);
   this->ConfigurationName = "";
-  this->ConfigurationTypes = CM_NULLPTR;
+  this->ConfigurationTypes = nullptr;
 }
 
 static void cmScriptGeneratorEncodeConfig(const std::string& config,
diff --git a/Source/cmSearchPath.cxx b/Source/cmSearchPath.cxx
index 0df6e0c..0f2ef6e 100644
--- a/Source/cmSearchPath.cxx
+++ b/Source/cmSearchPath.cxx
@@ -42,7 +42,7 @@ void cmSearchPath::AddPath(const std::string& path)
 
 void cmSearchPath::AddUserPath(const std::string& path)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   std::vector<std::string> outPaths;
 
@@ -77,7 +77,7 @@ void cmSearchPath::AddUserPath(const std::string& path)
 
 void cmSearchPath::AddCMakePath(const std::string& variable)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   // Get a path from a CMake variable.
   if (const char* value = this->FC->Makefile->GetDefinition(variable)) {
@@ -104,7 +104,7 @@ void cmSearchPath::AddEnvPath(const std::string& variable)
 
 void cmSearchPath::AddCMakePrefixPath(const std::string& variable)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   // Get a path from a CMake variable.
   if (const char* value = this->FC->Makefile->GetDefinition(variable)) {
@@ -168,7 +168,7 @@ void cmSearchPath::AddSuffixes(const std::vector<std::string>& suffixes)
 void cmSearchPath::AddPrefixPaths(const std::vector<std::string>& paths,
                                   const char* base)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   // default for programs
   std::string subdir = "bin";
@@ -209,7 +209,7 @@ void cmSearchPath::AddPrefixPaths(const std::vector<std::string>& paths,
 
 void cmSearchPath::AddPathInternal(const std::string& path, const char* base)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   std::string collapsed = cmSystemTools::CollapseFullPath(path, base);
 
diff --git a/Source/cmSearchPath.h b/Source/cmSearchPath.h
index 932022a..8f56669 100644
--- a/Source/cmSearchPath.h
+++ b/Source/cmSearchPath.h
@@ -23,7 +23,7 @@ public:
   // cmSearchPath must be initialized from a valid pointer.  The only reason
   // for the default is to allow it to be easily used in stl containers.
   // Attempting to initialize with a NULL value will fail an assertion
-  cmSearchPath(cmFindCommon* findCmd = CM_NULLPTR);
+  cmSearchPath(cmFindCommon* findCmd = nullptr);
   ~cmSearchPath();
 
   const std::vector<std::string>& GetPaths() const { return this->Paths; }
@@ -42,8 +42,8 @@ public:
 
 protected:
   void AddPrefixPaths(const std::vector<std::string>& paths,
-                      const char* base = CM_NULLPTR);
-  void AddPathInternal(const std::string& path, const char* base = CM_NULLPTR);
+                      const char* base = nullptr);
+  void AddPathInternal(const std::string& path, const char* base = nullptr);
 
   cmFindCommon* FC;
   std::vector<std::string> Paths;
diff --git a/Source/cmServer.cxx b/Source/cmServer.cxx
index ccb9af6..04810c6 100644
--- a/Source/cmServer.cxx
+++ b/Source/cmServer.cxx
@@ -219,7 +219,7 @@ cmServerResponse cmServer::SetProtocolVersion(const cmServerRequest& request)
 
   std::string errorMessage;
   if (!this->Protocol->Activate(this, request, &errorMessage)) {
-    this->Protocol = CM_NULLPTR;
+    this->Protocol = nullptr;
     return request.ReportError("Failed to activate protocol version: " +
                                errorMessage);
   }
@@ -484,7 +484,7 @@ void cmServerBase::StartShutDown()
 
   uv_stop(&Loop);
 
-  uv_walk(&Loop, on_walk_to_shutdown, CM_NULLPTR);
+  uv_walk(&Loop, on_walk_to_shutdown, nullptr);
 
   uv_run(&Loop, UV_RUN_DEFAULT);
 }
diff --git a/Source/cmServerProtocol.cxx b/Source/cmServerProtocol.cxx
index 2063c82..cb5e6ae 100644
--- a/Source/cmServerProtocol.cxx
+++ b/Source/cmServerProtocol.cxx
@@ -223,7 +223,7 @@ bool cmServerProtocol::Activate(cmServer* server,
   this->m_CMakeInstance = std::make_unique<cmake>(cmake::RoleProject);
   const bool result = this->DoActivate(request, errorMessage);
   if (!result) {
-    this->m_CMakeInstance = CM_NULLPTR;
+    this->m_CMakeInstance = nullptr;
   }
   return result;
 }
diff --git a/Source/cmSetCommand.cxx b/Source/cmSetCommand.cxx
index 820e7f6..b32cda3 100644
--- a/Source/cmSetCommand.cxx
+++ b/Source/cmSetCommand.cxx
@@ -61,7 +61,7 @@ bool cmSetCommand::InitialPass(std::vector<std::string> const& args,
   // SET (VAR PARENT_SCOPE) // Removes the definition of VAR
   // in the parent scope.
   if (args.size() == 2 && args[args.size() - 1] == "PARENT_SCOPE") {
-    this->Makefile->RaiseScope(variable, CM_NULLPTR);
+    this->Makefile->RaiseScope(variable, nullptr);
     return true;
   }
 
@@ -75,8 +75,8 @@ bool cmSetCommand::InitialPass(std::vector<std::string> const& args,
   bool force = false; // optional
   bool parentScope = false;
   cmStateEnums::CacheEntryType type =
-    cmStateEnums::STRING;             // required if cache
-  const char* docstring = CM_NULLPTR; // required if cache
+    cmStateEnums::STRING;          // required if cache
+  const char* docstring = nullptr; // required if cache
 
   unsigned int ignoreLastArgs = 0;
   // look for PARENT_SCOPE argument
diff --git a/Source/cmSetPropertyCommand.cxx b/Source/cmSetPropertyCommand.cxx
index b57f62a..338fcea 100644
--- a/Source/cmSetPropertyCommand.cxx
+++ b/Source/cmSetPropertyCommand.cxx
@@ -141,7 +141,7 @@ bool cmSetPropertyCommand::HandleGlobalMode()
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
   if (this->AppendMode) {
     cm->AppendProperty(name, value ? value : "", this->AppendAsString);
@@ -191,7 +191,7 @@ bool cmSetPropertyCommand::HandleDirectoryMode()
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
   if (this->AppendMode) {
     mf->AppendProperty(name, value ? value : "", this->AppendAsString);
@@ -232,7 +232,7 @@ bool cmSetPropertyCommand::HandleTarget(cmTarget* target)
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
   if (this->AppendMode) {
     target->AppendProperty(name, value, this->AppendAsString);
@@ -271,7 +271,7 @@ bool cmSetPropertyCommand::HandleSource(cmSourceFile* sf)
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
 
   if (this->AppendMode) {
@@ -319,7 +319,7 @@ bool cmSetPropertyCommand::HandleTest(cmTest* test)
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
   if (this->AppendMode) {
     test->AppendProperty(name, value, this->AppendAsString);
diff --git a/Source/cmSiteNameCommand.cxx b/Source/cmSiteNameCommand.cxx
index 7eace26..d2e83a6 100644
--- a/Source/cmSiteNameCommand.cxx
+++ b/Source/cmSiteNameCommand.cxx
@@ -52,8 +52,8 @@ bool cmSiteNameCommand::InitialPass(std::vector<std::string> const& args,
   // try to find the hostname for this computer
   if (!cmSystemTools::IsOff(hostname_cmd.c_str())) {
     std::string host;
-    cmSystemTools::RunSingleCommand(hostname_cmd.c_str(), &host, CM_NULLPTR,
-                                    CM_NULLPTR, CM_NULLPTR,
+    cmSystemTools::RunSingleCommand(hostname_cmd.c_str(), &host, nullptr,
+                                    nullptr, nullptr,
                                     cmSystemTools::OUTPUT_NONE);
 
     // got the hostname
diff --git a/Source/cmSourceFile.cxx b/Source/cmSourceFile.cxx
index baf95c5..912f773 100644
--- a/Source/cmSourceFile.cxx
+++ b/Source/cmSourceFile.cxx
@@ -15,13 +15,13 @@
 cmSourceFile::cmSourceFile(cmMakefile* mf, const std::string& name)
   : Location(mf, name)
 {
-  this->CustomCommand = CM_NULLPTR;
+  this->CustomCommand = nullptr;
   this->FindFullPathFailed = false;
 }
 
 cmSourceFile::~cmSourceFile()
 {
-  this->SetCustomCommand(CM_NULLPTR);
+  this->SetCustomCommand(nullptr);
 }
 
 std::string const& cmSourceFile::GetExtension() const
@@ -129,7 +129,7 @@ bool cmSourceFile::FindFullPath(std::string* error)
 
   // The file is not generated.  It must exist on disk.
   cmMakefile const* mf = this->Location.GetMakefile();
-  const char* tryDirs[3] = { CM_NULLPTR, CM_NULLPTR, CM_NULLPTR };
+  const char* tryDirs[3] = { nullptr, nullptr, nullptr };
   if (this->Location.DirectoryIsAmbiguous()) {
     tryDirs[0] = mf->GetCurrentSourceDirectory();
     tryDirs[1] = mf->GetCurrentBinaryDirectory();
@@ -281,7 +281,7 @@ const char* cmSourceFile::GetProperty(const std::string& prop) const
   // Check for computed properties.
   if (prop == "LOCATION") {
     if (this->FullPath.empty()) {
-      return CM_NULLPTR;
+      return nullptr;
     }
     return this->FullPath.c_str();
   }
diff --git a/Source/cmSourceFile.h b/Source/cmSourceFile.h
index 91f783d..c92afdc 100644
--- a/Source/cmSourceFile.h
+++ b/Source/cmSourceFile.h
@@ -57,7 +57,7 @@ public:
    * horrible interface, but is necessary for backwards
    * compatibility).
    */
-  std::string const& GetFullPath(std::string* error = CM_NULLPTR);
+  std::string const& GetFullPath(std::string* error = nullptr);
   std::string const& GetFullPath() const;
 
   /**
diff --git a/Source/cmSourceFileLocation.cxx b/Source/cmSourceFileLocation.cxx
index 86711d7..7d81ff2 100644
--- a/Source/cmSourceFileLocation.cxx
+++ b/Source/cmSourceFileLocation.cxx
@@ -15,7 +15,7 @@
 #include <vector>
 
 cmSourceFileLocation::cmSourceFileLocation()
-  : Makefile(CM_NULLPTR)
+  : Makefile(nullptr)
   , AmbiguousDirectory(true)
   , AmbiguousExtension(true)
 {
diff --git a/Source/cmSourceGroup.cxx b/Source/cmSourceGroup.cxx
index 104e959..fba4c31 100644
--- a/Source/cmSourceGroup.cxx
+++ b/Source/cmSourceGroup.cxx
@@ -114,7 +114,7 @@ cmSourceGroup* cmSourceGroup::LookupChild(const char* name) const
   }
 
   // if no child with this name was found return NULL
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmSourceGroup* cmSourceGroup::MatchChildrenFiles(const char* name)
@@ -134,7 +134,7 @@ cmSourceGroup* cmSourceGroup::MatchChildrenFiles(const char* name)
       return result;
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmSourceGroup* cmSourceGroup::MatchChildrenRegex(const char* name)
@@ -155,7 +155,7 @@ cmSourceGroup* cmSourceGroup::MatchChildrenRegex(const char* name)
     return this;
   }
 
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 std::vector<cmSourceGroup> const& cmSourceGroup::GetGroupChildren() const
diff --git a/Source/cmSourceGroup.h b/Source/cmSourceGroup.h
index 97affed..c4206e3 100644
--- a/Source/cmSourceGroup.h
+++ b/Source/cmSourceGroup.h
@@ -27,7 +27,7 @@ class cmSourceGroup
 {
 public:
   cmSourceGroup(const char* name, const char* regex,
-                const char* parentName = CM_NULLPTR);
+                const char* parentName = nullptr);
   cmSourceGroup(cmSourceGroup const& r);
   ~cmSourceGroup();
   cmSourceGroup& operator=(cmSourceGroup const&);
diff --git a/Source/cmSourceGroupCommand.cxx b/Source/cmSourceGroupCommand.cxx
index a966300..77fde7b 100644
--- a/Source/cmSourceGroupCommand.cxx
+++ b/Source/cmSourceGroupCommand.cxx
@@ -71,7 +71,7 @@ cmSourceGroup* addSourceGroup(const std::vector<std::string>& tokenizedPath,
     makefile.AddSourceGroup(tokenizedPath);
     sg = makefile.GetSourceGroup(tokenizedPath);
     if (!sg) {
-      return CM_NULLPTR;
+      return nullptr;
     }
   }
 
@@ -166,7 +166,7 @@ bool cmSourceGroupCommand::InitialPass(std::vector<std::string> const& args,
   std::vector<std::string> folders =
     cmSystemTools::tokenize(args[0], delimiter);
 
-  cmSourceGroup* sg = CM_NULLPTR;
+  cmSourceGroup* sg = nullptr;
   sg = this->Makefile->GetSourceGroup(folders);
   if (!sg) {
     this->Makefile->AddSourceGroup(folders);
diff --git a/Source/cmState.cxx b/Source/cmState.cxx
index 92e47f7..c325b88 100644
--- a/Source/cmState.cxx
+++ b/Source/cmState.cxx
@@ -63,12 +63,12 @@ const char* cmState::GetTargetTypeName(cmStateEnums::TargetType targetType)
       return "UNKNOWN_LIBRARY";
   }
   assert(false && "Unexpected target type");
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 const char* cmCacheEntryTypes[] = { "BOOL",          "PATH",     "FILEPATH",
                                     "STRING",        "INTERNAL", "STATIC",
-                                    "UNINITIALIZED", CM_NULLPTR };
+                                    "UNINITIALIZED", nullptr };
 
 const char* cmState::CacheEntryTypeToString(cmStateEnums::CacheEntryType type)
 {
@@ -132,7 +132,7 @@ const char* cmState::GetCacheEntryValue(std::string const& key) const
 {
   cmCacheManager::CacheEntry* e = this->CacheManager->GetCacheEntry(key);
   if (!e) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return e->Value.c_str();
 }
@@ -188,7 +188,7 @@ const char* cmState::GetCacheEntryProperty(std::string const& key,
   cmCacheManager::CacheIterator it =
     this->CacheManager->GetCacheIterator(key.c_str());
   if (!it.PropertyExists(propertyName)) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return it.GetProperty(propertyName);
 }
@@ -224,7 +224,7 @@ void cmState::RemoveCacheEntryProperty(std::string const& key,
                                        std::string const& propertyName)
 {
   this->CacheManager->GetCacheIterator(key.c_str())
-    .SetProperty(propertyName, (void*)CM_NULLPTR);
+    .SetProperty(propertyName, (void*)nullptr);
 }
 
 cmStateSnapshot cmState::Reset()
@@ -303,7 +303,7 @@ cmPropertyDefinition const* cmState::GetPropertyDefinition(
       this->PropertyDefinitions.find(scope)->second;
     return &defs.find(name)->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 bool cmState::IsPropertyDefined(const std::string& name,
@@ -436,7 +436,7 @@ cmCommand* cmState::GetCommand(std::string const& name) const
   if (pos != this->BuiltinCommands.end()) {
     return pos->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 std::vector<std::string> cmState::GetCommandNames() const
diff --git a/Source/cmStateSnapshot.cxx b/Source/cmStateSnapshot.cxx
index 77413c7..bdef3e5 100644
--- a/Source/cmStateSnapshot.cxx
+++ b/Source/cmStateSnapshot.cxx
@@ -220,7 +220,7 @@ void cmStateSnapshot::SetDefinition(std::string const& name,
 
 void cmStateSnapshot::RemoveDefinition(std::string const& name)
 {
-  this->Position->Vars->Set(name, CM_NULLPTR);
+  this->Position->Vars->Set(name, nullptr);
 }
 
 std::vector<std::string> cmStateSnapshot::UnusedKeys() const
diff --git a/Source/cmStateSnapshot.h b/Source/cmStateSnapshot.h
index 6293803..94d6274 100644
--- a/Source/cmStateSnapshot.h
+++ b/Source/cmStateSnapshot.h
@@ -19,7 +19,7 @@ class cmStateDirectory;
 class cmStateSnapshot
 {
 public:
-  cmStateSnapshot(cmState* state = CM_NULLPTR);
+  cmStateSnapshot(cmState* state = nullptr);
   cmStateSnapshot(cmState* state, cmStateDetail::PositionType position);
 
   const char* GetDefinition(std::string const& name) const;
diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 9f214c3..b9c118f 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -654,7 +654,7 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
        a != command.end(); ++a) {
     argv.push_back(a->c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   cmsysProcess* cp = cmsysProcess_New();
   cmsysProcess_SetCommand(cp, &*argv.begin());
@@ -666,12 +666,12 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
   if (outputflag == OUTPUT_PASSTHROUGH) {
     cmsysProcess_SetPipeShared(cp, cmsysProcess_Pipe_STDOUT, 1);
     cmsysProcess_SetPipeShared(cp, cmsysProcess_Pipe_STDERR, 1);
-    captureStdOut = CM_NULLPTR;
-    captureStdErr = CM_NULLPTR;
+    captureStdOut = nullptr;
+    captureStdErr = nullptr;
   } else if (outputflag == OUTPUT_MERGE ||
              (captureStdErr && captureStdErr == captureStdOut)) {
     cmsysProcess_SetOption(cp, cmsysProcess_Option_MergeOutput, 1);
-    captureStdErr = CM_NULLPTR;
+    captureStdErr = nullptr;
   }
   assert(!captureStdErr || captureStdErr != captureStdOut);
 
@@ -687,7 +687,7 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
   std::string strdata;
   if (outputflag != OUTPUT_PASSTHROUGH &&
       (captureStdOut || captureStdErr || outputflag != OUTPUT_NONE)) {
-    while ((pipe = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) >
+    while ((pipe = cmsysProcess_WaitForData(cp, &data, &length, nullptr)) >
            0) {
       // Translate NULL characters in the output into valid text.
       for (int i = 0; i < length; ++i) {
@@ -727,7 +727,7 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
     }
   }
 
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
 
   if (captureStdOut) {
     captureStdOut->assign(tempStdOut.begin(), tempStdOut.end());
@@ -1518,7 +1518,7 @@ void list_item_verbose(FILE* out, struct archive_entry* entry)
 
   /* Use uname if it's present, else uid. */
   p = archive_entry_uname(entry);
-  if ((p == CM_NULLPTR) || (*p == '\0')) {
+  if ((p == nullptr) || (*p == '\0')) {
     sprintf(tmp, "%lu ", (unsigned long)archive_entry_uid(entry));
     p = tmp;
   }
@@ -1529,7 +1529,7 @@ void list_item_verbose(FILE* out, struct archive_entry* entry)
   fprintf(out, "%-*s ", (int)u_width, p);
   /* Use gname if it's present, else gid. */
   p = archive_entry_gname(entry);
-  if (p != CM_NULLPTR && p[0] != '\0') {
+  if (p != nullptr && p[0] != '\0') {
     fprintf(out, "%s", p);
     w = strlen(p);
   } else {
@@ -1971,7 +1971,7 @@ unsigned int cmSystemTools::RandomSeed()
 
   // Try using a real random source.
   cmsys::ifstream fin;
-  fin.rdbuf()->pubsetbuf(CM_NULLPTR, 0); // Unbuffered read.
+  fin.rdbuf()->pubsetbuf(nullptr, 0); // Unbuffered read.
   fin.open("/dev/urandom");
   if (fin.good() && fin.read(seed.bytes, sizeof(seed)) &&
       fin.gcount() == sizeof(seed)) {
@@ -1980,7 +1980,7 @@ unsigned int cmSystemTools::RandomSeed()
 
   // Fall back to the time and pid.
   struct timeval t;
-  gettimeofday(&t, CM_NULLPTR);
+  gettimeofday(&t, nullptr);
   unsigned int pid = static_cast<unsigned int>(getpid());
   unsigned int tv_sec = static_cast<unsigned int>(t.tv_sec);
   unsigned int tv_usec = static_cast<unsigned int>(t.tv_usec);
@@ -2296,8 +2296,8 @@ bool cmSystemTools::ChangeRPath(std::string const& file,
 
     // Get the RPATH and RUNPATH entries from it.
     int se_count = 0;
-    cmELF::StringEntry const* se[2] = { CM_NULLPTR, CM_NULLPTR };
-    const char* se_name[2] = { CM_NULLPTR, CM_NULLPTR };
+    cmELF::StringEntry const* se[2] = { nullptr, nullptr };
+    const char* se_name[2] = { nullptr, nullptr };
     if (cmELF::StringEntry const* se_rpath = elf.GetRPath()) {
       se[se_count] = se_rpath;
       se_name[se_count] = "RPATH";
@@ -2610,7 +2610,7 @@ bool cmSystemTools::RemoveRPath(std::string const& file, std::string* emsg,
     // Get the RPATH and RUNPATH entries from it and sort them by index
     // in the dynamic section header.
     int se_count = 0;
-    cmELF::StringEntry const* se[2] = { CM_NULLPTR, CM_NULLPTR };
+    cmELF::StringEntry const* se[2] = { nullptr, nullptr };
     if (cmELF::StringEntry const* se_rpath = elf.GetRPath()) {
       se[se_count++] = se_rpath;
     }
diff --git a/Source/cmSystemTools.h b/Source/cmSystemTools.h
index e163c91..a116aa1 100644
--- a/Source/cmSystemTools.h
+++ b/Source/cmSystemTools.h
@@ -62,34 +62,34 @@ public:
    *  set to false, will disable furthur messages (cancel).
    */
   static void SetMessageCallback(MessageCallback f,
-                                 void* clientData = CM_NULLPTR);
+                                 void* clientData = nullptr);
 
   /**
    * Display an error message.
    */
-  static void Error(const char* m, const char* m2 = CM_NULLPTR,
-                    const char* m3 = CM_NULLPTR, const char* m4 = CM_NULLPTR);
+  static void Error(const char* m, const char* m2 = nullptr,
+                    const char* m3 = nullptr, const char* m4 = nullptr);
 
   /**
    * Display a message.
    */
-  static void Message(const char* m, const char* title = CM_NULLPTR);
+  static void Message(const char* m, const char* title = nullptr);
 
   typedef void (*OutputCallback)(const char*, size_t length, void*);
 
   ///! Send a string to stdout
   static void Stdout(const char* s);
   static void Stdout(const char* s, size_t length);
-  static void SetStdoutCallback(OutputCallback, void* clientData = CM_NULLPTR);
+  static void SetStdoutCallback(OutputCallback, void* clientData = nullptr);
 
   ///! Send a string to stderr
   static void Stderr(const char* s);
   static void Stderr(const char* s, size_t length);
-  static void SetStderrCallback(OutputCallback, void* clientData = CM_NULLPTR);
+  static void SetStderrCallback(OutputCallback, void* clientData = nullptr);
 
   typedef bool (*InterruptCallback)(void*);
   static void SetInterruptCallback(InterruptCallback f,
-                                   void* clientData = CM_NULLPTR);
+                                   void* clientData = nullptr);
   static bool GetInterruptFlag();
 
   ///! Return true if there was an error at any point.
@@ -220,10 +220,10 @@ public:
     OUTPUT_PASSTHROUGH
   };
   static bool RunSingleCommand(const char* command,
-                               std::string* captureStdOut = CM_NULLPTR,
-                               std::string* captureStdErr = CM_NULLPTR,
-                               int* retVal = CM_NULLPTR,
-                               const char* dir = CM_NULLPTR,
+                               std::string* captureStdOut = nullptr,
+                               std::string* captureStdErr = nullptr,
+                               int* retVal = nullptr,
+                               const char* dir = nullptr,
                                OutputOption outputflag = OUTPUT_MERGE,
                                double timeout = 0.0);
   /**
@@ -232,10 +232,10 @@ public:
    * be in comand[1]...command[command.size()]
    */
   static bool RunSingleCommand(std::vector<std::string> const& command,
-                               std::string* captureStdOut = CM_NULLPTR,
-                               std::string* captureStdErr = CM_NULLPTR,
-                               int* retVal = CM_NULLPTR,
-                               const char* dir = CM_NULLPTR,
+                               std::string* captureStdOut = nullptr,
+                               std::string* captureStdErr = nullptr,
+                               int* retVal = nullptr,
+                               const char* dir = nullptr,
                                OutputOption outputflag = OUTPUT_MERGE,
                                double timeout = 0.0,
                                Encoding encoding = cmProcessOutput::Auto);
@@ -463,13 +463,12 @@ public:
   /** Try to set the RPATH in an ELF binary.  */
   static bool ChangeRPath(std::string const& file, std::string const& oldRPath,
                           std::string const& newRPath,
-                          std::string* emsg = CM_NULLPTR,
-                          bool* changed = CM_NULLPTR);
+                          std::string* emsg = nullptr,
+                          bool* changed = nullptr);
 
   /** Try to remove the RPATH from an ELF binary.  */
-  static bool RemoveRPath(std::string const& file,
-                          std::string* emsg = CM_NULLPTR,
-                          bool* removed = CM_NULLPTR);
+  static bool RemoveRPath(std::string const& file, std::string* emsg = nullptr,
+                          bool* removed = nullptr);
 
   /** Check whether the RPATH in an ELF binary contains the path
       given.  */
diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index a116ea3..d4a0bf5 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -75,7 +75,7 @@ const char* cmTargetPropertyComputer::GetSources<cmTarget>(
 {
   cmStringRange entries = tgt->GetSourceEntries();
   if (entries.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   std::ostringstream ss;
@@ -211,79 +211,79 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
   // Setup default property values.
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
       this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("ANDROID_API", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_API_MIN", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_ARCH", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_STL_TYPE", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_SKIP_ANT_STEP", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_PROCESS_MAX", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_PROGUARD", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_PROGUARD_CONFIG_PATH", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_SECURE_PROPS_PATH", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_NATIVE_LIB_DIRECTORIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_NATIVE_LIB_DEPENDENCIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_JAVA_SOURCE_DIR", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_JAR_DIRECTORIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_JAR_DEPENDENCIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_ASSETS_DIRECTORIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_ANT_ADDITIONAL_OPTIONS", CM_NULLPTR);
-    this->SetPropertyDefault("BUILD_RPATH", CM_NULLPTR);
-    this->SetPropertyDefault("INSTALL_NAME_DIR", CM_NULLPTR);
+    this->SetPropertyDefault("ANDROID_API", nullptr);
+    this->SetPropertyDefault("ANDROID_API_MIN", nullptr);
+    this->SetPropertyDefault("ANDROID_ARCH", nullptr);
+    this->SetPropertyDefault("ANDROID_STL_TYPE", nullptr);
+    this->SetPropertyDefault("ANDROID_SKIP_ANT_STEP", nullptr);
+    this->SetPropertyDefault("ANDROID_PROCESS_MAX", nullptr);
+    this->SetPropertyDefault("ANDROID_PROGUARD", nullptr);
+    this->SetPropertyDefault("ANDROID_PROGUARD_CONFIG_PATH", nullptr);
+    this->SetPropertyDefault("ANDROID_SECURE_PROPS_PATH", nullptr);
+    this->SetPropertyDefault("ANDROID_NATIVE_LIB_DIRECTORIES", nullptr);
+    this->SetPropertyDefault("ANDROID_NATIVE_LIB_DEPENDENCIES", nullptr);
+    this->SetPropertyDefault("ANDROID_JAVA_SOURCE_DIR", nullptr);
+    this->SetPropertyDefault("ANDROID_JAR_DIRECTORIES", nullptr);
+    this->SetPropertyDefault("ANDROID_JAR_DEPENDENCIES", nullptr);
+    this->SetPropertyDefault("ANDROID_ASSETS_DIRECTORIES", nullptr);
+    this->SetPropertyDefault("ANDROID_ANT_ADDITIONAL_OPTIONS", nullptr);
+    this->SetPropertyDefault("BUILD_RPATH", nullptr);
+    this->SetPropertyDefault("INSTALL_NAME_DIR", nullptr);
     this->SetPropertyDefault("INSTALL_RPATH", "");
     this->SetPropertyDefault("INSTALL_RPATH_USE_LINK_PATH", "OFF");
-    this->SetPropertyDefault("INTERPROCEDURAL_OPTIMIZATION", CM_NULLPTR);
+    this->SetPropertyDefault("INTERPROCEDURAL_OPTIMIZATION", nullptr);
     this->SetPropertyDefault("SKIP_BUILD_RPATH", "OFF");
     this->SetPropertyDefault("BUILD_WITH_INSTALL_RPATH", "OFF");
-    this->SetPropertyDefault("ARCHIVE_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("LIBRARY_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("RUNTIME_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("PDB_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("COMPILE_PDB_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("Fortran_FORMAT", CM_NULLPTR);
-    this->SetPropertyDefault("Fortran_MODULE_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("GNUtoMS", CM_NULLPTR);
-    this->SetPropertyDefault("OSX_ARCHITECTURES", CM_NULLPTR);
-    this->SetPropertyDefault("IOS_INSTALL_COMBINED", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOMOC", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOUIC", CM_NULLPTR);
-    this->SetPropertyDefault("AUTORCC", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOMOC_DEPEND_FILTERS", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOMOC_MACRO_NAMES", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOMOC_MOC_OPTIONS", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOUIC_OPTIONS", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOUIC_SEARCH_PATHS", CM_NULLPTR);
-    this->SetPropertyDefault("AUTORCC_OPTIONS", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_DEPENDS_NO_SHARED", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_INTERFACE_LIBRARIES", CM_NULLPTR);
-    this->SetPropertyDefault("WIN32_EXECUTABLE", CM_NULLPTR);
-    this->SetPropertyDefault("MACOSX_BUNDLE", CM_NULLPTR);
-    this->SetPropertyDefault("MACOSX_RPATH", CM_NULLPTR);
-    this->SetPropertyDefault("BUILD_WITH_INSTALL_NAME_DIR", CM_NULLPTR);
-    this->SetPropertyDefault("C_CLANG_TIDY", CM_NULLPTR);
-    this->SetPropertyDefault("C_COMPILER_LAUNCHER", CM_NULLPTR);
-    this->SetPropertyDefault("C_CPPLINT", CM_NULLPTR);
-    this->SetPropertyDefault("C_INCLUDE_WHAT_YOU_USE", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_WHAT_YOU_USE", CM_NULLPTR);
-    this->SetPropertyDefault("C_STANDARD", CM_NULLPTR);
-    this->SetPropertyDefault("C_STANDARD_REQUIRED", CM_NULLPTR);
-    this->SetPropertyDefault("C_EXTENSIONS", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_CLANG_TIDY", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_COMPILER_LAUNCHER", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_CPPLINT", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_INCLUDE_WHAT_YOU_USE", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_STANDARD", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_STANDARD_REQUIRED", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_EXTENSIONS", CM_NULLPTR);
-    this->SetPropertyDefault("CUDA_STANDARD", CM_NULLPTR);
-    this->SetPropertyDefault("CUDA_STANDARD_REQUIRED", CM_NULLPTR);
-    this->SetPropertyDefault("CUDA_EXTENSIONS", CM_NULLPTR);
-    this->SetPropertyDefault("CUDA_COMPILER_LAUNCHER", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_SEARCH_START_STATIC", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_SEARCH_END_STATIC", CM_NULLPTR);
+    this->SetPropertyDefault("ARCHIVE_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("LIBRARY_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("RUNTIME_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("PDB_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("COMPILE_PDB_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("Fortran_FORMAT", nullptr);
+    this->SetPropertyDefault("Fortran_MODULE_DIRECTORY", nullptr);
+    this->SetPropertyDefault("GNUtoMS", nullptr);
+    this->SetPropertyDefault("OSX_ARCHITECTURES", nullptr);
+    this->SetPropertyDefault("IOS_INSTALL_COMBINED", nullptr);
+    this->SetPropertyDefault("AUTOMOC", nullptr);
+    this->SetPropertyDefault("AUTOUIC", nullptr);
+    this->SetPropertyDefault("AUTORCC", nullptr);
+    this->SetPropertyDefault("AUTOMOC_DEPEND_FILTERS", nullptr);
+    this->SetPropertyDefault("AUTOMOC_MACRO_NAMES", nullptr);
+    this->SetPropertyDefault("AUTOMOC_MOC_OPTIONS", nullptr);
+    this->SetPropertyDefault("AUTOUIC_OPTIONS", nullptr);
+    this->SetPropertyDefault("AUTOUIC_SEARCH_PATHS", nullptr);
+    this->SetPropertyDefault("AUTORCC_OPTIONS", nullptr);
+    this->SetPropertyDefault("LINK_DEPENDS_NO_SHARED", nullptr);
+    this->SetPropertyDefault("LINK_INTERFACE_LIBRARIES", nullptr);
+    this->SetPropertyDefault("WIN32_EXECUTABLE", nullptr);
+    this->SetPropertyDefault("MACOSX_BUNDLE", nullptr);
+    this->SetPropertyDefault("MACOSX_RPATH", nullptr);
+    this->SetPropertyDefault("BUILD_WITH_INSTALL_NAME_DIR", nullptr);
+    this->SetPropertyDefault("C_CLANG_TIDY", nullptr);
+    this->SetPropertyDefault("C_COMPILER_LAUNCHER", nullptr);
+    this->SetPropertyDefault("C_CPPLINT", nullptr);
+    this->SetPropertyDefault("C_INCLUDE_WHAT_YOU_USE", nullptr);
+    this->SetPropertyDefault("LINK_WHAT_YOU_USE", nullptr);
+    this->SetPropertyDefault("C_STANDARD", nullptr);
+    this->SetPropertyDefault("C_STANDARD_REQUIRED", nullptr);
+    this->SetPropertyDefault("C_EXTENSIONS", nullptr);
+    this->SetPropertyDefault("CXX_CLANG_TIDY", nullptr);
+    this->SetPropertyDefault("CXX_COMPILER_LAUNCHER", nullptr);
+    this->SetPropertyDefault("CXX_CPPLINT", nullptr);
+    this->SetPropertyDefault("CXX_INCLUDE_WHAT_YOU_USE", nullptr);
+    this->SetPropertyDefault("CXX_STANDARD", nullptr);
+    this->SetPropertyDefault("CXX_STANDARD_REQUIRED", nullptr);
+    this->SetPropertyDefault("CXX_EXTENSIONS", nullptr);
+    this->SetPropertyDefault("CUDA_STANDARD", nullptr);
+    this->SetPropertyDefault("CUDA_STANDARD_REQUIRED", nullptr);
+    this->SetPropertyDefault("CUDA_EXTENSIONS", nullptr);
+    this->SetPropertyDefault("CUDA_COMPILER_LAUNCHER", nullptr);
+    this->SetPropertyDefault("LINK_SEARCH_START_STATIC", nullptr);
+    this->SetPropertyDefault("LINK_SEARCH_END_STATIC", nullptr);
   }
 
   if (this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("NO_SYSTEM_FROM_IMPORTED", CM_NULLPTR);
+    this->SetPropertyDefault("NO_SYSTEM_FROM_IMPORTED", nullptr);
   }
 
   // Collect the set of configuration types.
@@ -297,7 +297,7 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
       "ARCHIVE_OUTPUT_DIRECTORY_",     "LIBRARY_OUTPUT_DIRECTORY_",
       "RUNTIME_OUTPUT_DIRECTORY_",     "PDB_OUTPUT_DIRECTORY_",
       "COMPILE_PDB_OUTPUT_DIRECTORY_", "MAP_IMPORTED_CONFIG_",
-      "INTERPROCEDURAL_OPTIMIZATION_", CM_NULLPTR
+      "INTERPROCEDURAL_OPTIMIZATION_", nullptr
     };
     for (std::vector<std::string>::iterator ci = configNames.begin();
          ci != configNames.end(); ++ci) {
@@ -311,7 +311,7 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
         }
         std::string property = *p;
         property += configUpper;
-        this->SetPropertyDefault(property, CM_NULLPTR);
+        this->SetPropertyDefault(property, nullptr);
       }
 
       // Initialize per-configuration name postfix property from the
@@ -323,7 +323,7 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
           this->TargetTypeValue != cmStateEnums::INTERFACE_LIBRARY) {
         std::string property = cmSystemTools::UpperCase(*ci);
         property += "_POSTFIX";
-        this->SetPropertyDefault(property, CM_NULLPTR);
+        this->SetPropertyDefault(property, nullptr);
       }
     }
   }
@@ -367,16 +367,16 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
 
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
       this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("C_VISIBILITY_PRESET", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_VISIBILITY_PRESET", CM_NULLPTR);
-    this->SetPropertyDefault("CUDA_VISIBILITY_PRESET", CM_NULLPTR);
-    this->SetPropertyDefault("VISIBILITY_INLINES_HIDDEN", CM_NULLPTR);
+    this->SetPropertyDefault("C_VISIBILITY_PRESET", nullptr);
+    this->SetPropertyDefault("CXX_VISIBILITY_PRESET", nullptr);
+    this->SetPropertyDefault("CUDA_VISIBILITY_PRESET", nullptr);
+    this->SetPropertyDefault("VISIBILITY_INLINES_HIDDEN", nullptr);
   }
 
   if (this->TargetTypeValue == cmStateEnums::EXECUTABLE) {
-    this->SetPropertyDefault("ANDROID_GUI", CM_NULLPTR);
-    this->SetPropertyDefault("CROSSCOMPILING_EMULATOR", CM_NULLPTR);
-    this->SetPropertyDefault("ENABLE_EXPORTS", CM_NULLPTR);
+    this->SetPropertyDefault("ANDROID_GUI", nullptr);
+    this->SetPropertyDefault("CROSSCOMPILING_EMULATOR", nullptr);
+    this->SetPropertyDefault("ENABLE_EXPORTS", nullptr);
   }
   if (this->TargetTypeValue == cmStateEnums::SHARED_LIBRARY ||
       this->TargetTypeValue == cmStateEnums::MODULE_LIBRARY) {
@@ -384,12 +384,12 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
   }
   if (this->TargetTypeValue == cmStateEnums::SHARED_LIBRARY ||
       this->TargetTypeValue == cmStateEnums::EXECUTABLE) {
-    this->SetPropertyDefault("WINDOWS_EXPORT_ALL_SYMBOLS", CM_NULLPTR);
+    this->SetPropertyDefault("WINDOWS_EXPORT_ALL_SYMBOLS", nullptr);
   }
 
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
       this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("POSITION_INDEPENDENT_CODE", CM_NULLPTR);
+    this->SetPropertyDefault("POSITION_INDEPENDENT_CODE", nullptr);
   }
 
   // Record current policies for later use.
@@ -405,8 +405,8 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
 
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
       this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("JOB_POOL_COMPILE", CM_NULLPTR);
-    this->SetPropertyDefault("JOB_POOL_LINK", CM_NULLPTR);
+    this->SetPropertyDefault("JOB_POOL_COMPILE", nullptr);
+    this->SetPropertyDefault("JOB_POOL_LINK", nullptr);
   }
 }
 
@@ -429,7 +429,7 @@ cmListFileBacktrace const* cmTarget::GetUtilityBacktrace(
   std::map<std::string, cmListFileBacktrace>::const_iterator i =
     this->UtilityBacktraces.find(u);
   if (i == this->UtilityBacktraces.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   return &i->second;
@@ -547,7 +547,7 @@ cmSourceFile* cmTarget::AddSourceCMP0049(const std::string& s)
 {
   std::string src = this->ProcessSourceItemCMP0049(s);
   if (!s.empty() && src.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return this->AddSource(src);
 }
@@ -618,7 +618,7 @@ cmSourceFile* cmTarget::AddSource(const std::string& src)
     this->Internal->SourceBacktraces.push_back(lfbt);
   }
   if (cmGeneratorExpression::Find(src) != std::string::npos) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return this->Makefile->GetOrCreateSource(src);
 }
@@ -1212,7 +1212,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
   if (specialProps.count(prop)) {
     if (prop == propLINK_LIBRARIES) {
       if (this->Internal->LinkImplementationPropertyEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1225,7 +1225,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propINCLUDE_DIRECTORIES) {
       if (this->Internal->IncludeDirectoriesEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1234,7 +1234,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propCOMPILE_FEATURES) {
       if (this->Internal->CompileFeaturesEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1243,7 +1243,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propCOMPILE_OPTIONS) {
       if (this->Internal->CompileOptionsEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1252,7 +1252,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propCOMPILE_DEFINITIONS) {
       if (this->Internal->CompileDefinitionsEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1261,7 +1261,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propMANUALLY_ADDED_DEPENDENCIES) {
       if (this->Utilities.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1399,8 +1399,8 @@ std::string cmTarget::ImportedGetFullPath(
 
   std::string result;
 
-  const char* loc = CM_NULLPTR;
-  const char* imp = CM_NULLPTR;
+  const char* loc = nullptr;
+  const char* imp = nullptr;
   std::string suffix;
 
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
diff --git a/Source/cmTarget.h b/Source/cmTarget.h
index 53fd45e..c335c81 100644
--- a/Source/cmTarget.h
+++ b/Source/cmTarget.h
@@ -184,7 +184,7 @@ public:
    * name as would be specified to the ADD_EXECUTABLE or UTILITY_SOURCE
    * commands. It is not a full path nor does it have an extension.
    */
-  void AddUtility(const std::string& u, cmMakefile* makefile = CM_NULLPTR);
+  void AddUtility(const std::string& u, cmMakefile* makefile = nullptr);
   ///! Get the utilities used by this target
   std::set<std::string> const& GetUtilities() const { return this->Utilities; }
   cmListFileBacktrace const* GetUtilityBacktrace(const std::string& u) const;
diff --git a/Source/cmTargetLinkLibrariesCommand.cxx b/Source/cmTargetLinkLibrariesCommand.cxx
index e173036..bfae53c 100644
--- a/Source/cmTargetLinkLibrariesCommand.cxx
+++ b/Source/cmTargetLinkLibrariesCommand.cxx
@@ -95,7 +95,7 @@ bool cmTargetLinkLibrariesCommand::InitialPass(
 
   if (this->Target->GetType() == cmStateEnums::UTILITY) {
     std::ostringstream e;
-    const char* modal = CM_NULLPTR;
+    const char* modal = nullptr;
     cmake::MessageType messageType = cmake::AUTHOR_WARNING;
     switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0039)) {
       case cmPolicies::WARN:
@@ -311,7 +311,7 @@ bool cmTargetLinkLibrariesCommand::HandleLibrary(const std::string& lib,
   if (!this->Target->PushTLLCommandTrace(
         sig, this->Makefile->GetExecutionContext())) {
     std::ostringstream e;
-    const char* modal = CM_NULLPTR;
+    const char* modal = nullptr;
     cmake::MessageType messageType = cmake::AUTHOR_WARNING;
     switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0023)) {
       case cmPolicies::WARN:
diff --git a/Source/cmTargetPropertyComputer.cxx b/Source/cmTargetPropertyComputer.cxx
index b19b024..3a3c165 100644
--- a/Source/cmTargetPropertyComputer.cxx
+++ b/Source/cmTargetPropertyComputer.cxx
@@ -16,7 +16,7 @@ bool cmTargetPropertyComputer::HandleLocationPropertyPolicy(
   cmListFileBacktrace const& context)
 {
   std::ostringstream e;
-  const char* modal = CM_NULLPTR;
+  const char* modal = nullptr;
   cmake::MessageType messageType = cmake::AUTHOR_WARNING;
   switch (context.GetBottom().GetPolicy(cmPolicies::CMP0026)) {
     case cmPolicies::WARN:
diff --git a/Source/cmTargetPropertyComputer.h b/Source/cmTargetPropertyComputer.h
index 94688e3..97e4fba 100644
--- a/Source/cmTargetPropertyComputer.h
+++ b/Source/cmTargetPropertyComputer.h
@@ -26,12 +26,12 @@ public:
       return loc;
     }
     if (cmSystemTools::GetFatalErrorOccured()) {
-      return CM_NULLPTR;
+      return nullptr;
     }
     if (prop == "SOURCES") {
       return GetSources(tgt, messenger, context);
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   static bool WhiteListedInterfaceProperty(const std::string& prop);
@@ -69,7 +69,7 @@ private:
         if (!tgt->IsImported() &&
             !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
                                           context)) {
-          return CM_NULLPTR;
+          return nullptr;
         }
         return ComputeLocationForBuild(tgt);
       }
@@ -79,7 +79,7 @@ private:
         if (!tgt->IsImported() &&
             !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
                                           context)) {
-          return CM_NULLPTR;
+          return nullptr;
         }
         const char* configName = prop.c_str() + 9;
         return ComputeLocation(tgt, configName);
@@ -93,13 +93,13 @@ private:
           if (!tgt->IsImported() &&
               !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
                                             context)) {
-            return CM_NULLPTR;
+            return nullptr;
           }
           return ComputeLocation(tgt, configName);
         }
       }
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   template <typename Target>
diff --git a/Source/cmTestGenerator.cxx b/Source/cmTestGenerator.cxx
index be4b378..85d4b97 100644
--- a/Source/cmTestGenerator.cxx
+++ b/Source/cmTestGenerator.cxx
@@ -23,7 +23,7 @@ cmTestGenerator::cmTestGenerator(
 {
   this->ActionsPerConfig = !test->GetOldStyle();
   this->TestGenerated = false;
-  this->LG = CM_NULLPTR;
+  this->LG = nullptr;
 }
 
 cmTestGenerator::~cmTestGenerator()
@@ -80,7 +80,7 @@ void cmTestGenerator::GenerateScriptForConfig(std::ostream& os,
 
     // Prepend with the emulator when cross compiling if required.
     const char* emulator = target->GetProperty("CROSSCOMPILING_EMULATOR");
-    if (emulator != CM_NULLPTR) {
+    if (emulator != nullptr) {
       std::vector<std::string> emulatorWithArgs;
       cmSystemTools::ExpandListArgument(emulator, emulatorWithArgs);
       std::string emulatorExe(emulatorWithArgs[0]);
diff --git a/Source/cmTimestamp.cxx b/Source/cmTimestamp.cxx
index 4b97188..ad08444 100644
--- a/Source/cmTimestamp.cxx
+++ b/Source/cmTimestamp.cxx
@@ -12,7 +12,7 @@
 std::string cmTimestamp::CurrentTime(const std::string& formatString,
                                      bool utcFlag)
 {
-  time_t currentTimeT = time(CM_NULLPTR);
+  time_t currentTimeT = time(nullptr);
   std::string source_date_epoch;
   cmSystemTools::GetEnv("SOURCE_DATE_EPOCH", source_date_epoch);
   if (!source_date_epoch.empty()) {
@@ -56,14 +56,14 @@ std::string cmTimestamp::CreateTimestampFromTimeT(time_t timeT,
   struct tm timeStruct;
   memset(&timeStruct, 0, sizeof(timeStruct));
 
-  struct tm* ptr = (struct tm*)CM_NULLPTR;
+  struct tm* ptr = (struct tm*)nullptr;
   if (utcFlag) {
     ptr = gmtime(&timeT);
   } else {
     ptr = localtime(&timeT);
   }
 
-  if (ptr == CM_NULLPTR) {
+  if (ptr == nullptr) {
     return std::string();
   }
 
diff --git a/Source/cmTryRunCommand.cxx b/Source/cmTryRunCommand.cxx
index 07e20e6..cc93b03 100644
--- a/Source/cmTryRunCommand.cxx
+++ b/Source/cmTryRunCommand.cxx
@@ -125,9 +125,8 @@ bool cmTryRunCommand::InitialPass(std::vector<std::string> const& argv,
       std::string runOutputContents;
       if (this->Makefile->IsOn("CMAKE_CROSSCOMPILING") &&
           !this->Makefile->IsDefinitionSet("CMAKE_CROSSCOMPILING_EMULATOR")) {
-        this->DoNotRunExecutable(runArgs, argv[3], captureRunOutput
-                                   ? &runOutputContents
-                                   : CM_NULLPTR);
+        this->DoNotRunExecutable(
+          runArgs, argv[3], captureRunOutput ? &runOutputContents : nullptr);
       } else {
         this->RunExecutable(runArgs, &runOutputContents);
       }
@@ -189,7 +188,7 @@ void cmTryRunCommand::RunExecutable(const std::string& runArgs,
   }
   int timeout = 0;
   bool worked = cmSystemTools::RunSingleCommand(
-    finalCommand.c_str(), out, out, &retVal, CM_NULLPTR,
+    finalCommand.c_str(), out, out, &retVal, nullptr,
     cmSystemTools::OUTPUT_NONE, timeout);
   // set the run var
   char retChar[1000];
@@ -233,7 +232,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
     this->RunResultVariable + "__TRYRUN_OUTPUT";
   bool error = false;
 
-  if (this->Makefile->GetDefinition(this->RunResultVariable) == CM_NULLPTR) {
+  if (this->Makefile->GetDefinition(this->RunResultVariable) == nullptr) {
     // if the variables doesn't exist, create it with a helpful error text
     // and mark it as advanced
     std::string comment;
@@ -255,8 +254,8 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
   }
 
   // is the output from the executable used ?
-  if (out != CM_NULLPTR) {
-    if (this->Makefile->GetDefinition(internalRunOutputName) == CM_NULLPTR) {
+  if (out != nullptr) {
+    if (this->Makefile->GetDefinition(internalRunOutputName) == nullptr) {
       // if the variables doesn't exist, create it with a helpful error text
       // and mark it as advanced
       std::string comment;
@@ -304,7 +303,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
       comment += " to\n"
                  "   the exit code (in many cases 0 for success), otherwise "
                  "enter \"FAILED_TO_RUN\".\n";
-      if (out != CM_NULLPTR) {
+      if (out != nullptr) {
         comment += internalRunOutputName;
         comment +=
           "\n   contains the text the executable "
@@ -335,7 +334,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
            << this->Makefile->GetDefinition(this->RunResultVariable)
            << "\"\n     CACHE STRING \"Result from TRY_RUN\" FORCE)\n\n";
 
-      if (out != CM_NULLPTR) {
+      if (out != nullptr) {
         file << "set( " << internalRunOutputName << " \n     \""
              << this->Makefile->GetDefinition(internalRunOutputName)
              << "\"\n     CACHE STRING \"Output from TRY_RUN\" FORCE)\n\n";
@@ -348,7 +347,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
                                "please set the following cache variables "
                                "appropriately:\n";
     errorMessage += "   " + this->RunResultVariable + " (advanced)\n";
-    if (out != CM_NULLPTR) {
+    if (out != nullptr) {
       errorMessage += "   " + internalRunOutputName + " (advanced)\n";
     }
     errorMessage += detailsString;
@@ -356,7 +355,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
     return;
   }
 
-  if (out != CM_NULLPTR) {
+  if (out != nullptr) {
     (*out) = this->Makefile->GetDefinition(internalRunOutputName);
   }
 }
diff --git a/Source/cmUnsetCommand.cxx b/Source/cmUnsetCommand.cxx
index 31525ba..18bbdd7 100644
--- a/Source/cmUnsetCommand.cxx
+++ b/Source/cmUnsetCommand.cxx
@@ -46,7 +46,7 @@ bool cmUnsetCommand::InitialPass(std::vector<std::string> const& args,
   }
   // unset(VAR PARENT_SCOPE)
   if ((args.size() == 2) && (args[1] == "PARENT_SCOPE")) {
-    this->Makefile->RaiseScope(variable, CM_NULLPTR);
+    this->Makefile->RaiseScope(variable, nullptr);
     return true;
   }
   // ERROR: second argument isn't CACHE or PARENT_SCOPE
diff --git a/Source/cmUtilitySourceCommand.cxx b/Source/cmUtilitySourceCommand.cxx
index eabd7ef..0ce437c 100644
--- a/Source/cmUtilitySourceCommand.cxx
+++ b/Source/cmUtilitySourceCommand.cxx
@@ -33,7 +33,7 @@ bool cmUtilitySourceCommand::InitialPass(std::vector<std::string> const& args,
 
   bool haveCacheValue = false;
   if (this->Makefile->IsOn("CMAKE_CROSSCOMPILING")) {
-    haveCacheValue = (cacheValue != CM_NULLPTR);
+    haveCacheValue = (cacheValue != nullptr);
     if (!haveCacheValue) {
       std::string msg = "UTILITY_SOURCE is used in cross compiling mode for ";
       msg += cacheEntry;
@@ -45,7 +45,7 @@ bool cmUtilitySourceCommand::InitialPass(std::vector<std::string> const& args,
   } else {
     cmState* state = this->Makefile->GetState();
     haveCacheValue =
-      (cacheValue && (strstr(cacheValue, "(IntDir)") == CM_NULLPTR ||
+      (cacheValue && (strstr(cacheValue, "(IntDir)") == nullptr ||
                       (intDir && strcmp(intDir, "$(IntDir)") == 0)) &&
        (state->GetCacheMajorVersion() != 0 &&
         state->GetCacheMinorVersion() != 0));
diff --git a/Source/cmVariableWatch.h b/Source/cmVariableWatch.h
index a575afe..05a0a56 100644
--- a/Source/cmVariableWatch.h
+++ b/Source/cmVariableWatch.h
@@ -31,10 +31,9 @@ public:
    * Add watch to the variable
    */
   bool AddWatch(const std::string& variable, WatchMethod method,
-                void* client_data = CM_NULLPTR,
-                DeleteData delete_data = CM_NULLPTR);
+                void* client_data = nullptr, DeleteData delete_data = nullptr);
   void RemoveWatch(const std::string& variable, WatchMethod method,
-                   void* client_data = CM_NULLPTR);
+                   void* client_data = nullptr);
 
   /**
    * This method is called when variable is accessed
@@ -67,9 +66,9 @@ protected:
     void* ClientData;
     DeleteData DeleteDataCall;
     Pair()
-      : Method(CM_NULLPTR)
-      , ClientData(CM_NULLPTR)
-      , DeleteDataCall(CM_NULLPTR)
+      : Method(nullptr)
+      , ClientData(nullptr)
+      , DeleteDataCall(nullptr)
     {
     }
     ~Pair()
diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index e1a0c83..5427539 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -2063,7 +2063,7 @@ bool cmVisualStudio10TargetGenerator::OutputSourceSpecificFlags(
       hasFlags = true;
       cmGlobalVisualStudio10Generator* gg =
         static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-      cmIDEFlagTable const* flagtable = CM_NULLPTR;
+      cmIDEFlagTable const* flagtable = nullptr;
       const std::string& srclang = source->GetLanguage();
       if (srclang == "C" || srclang == "CXX") {
         flagtable = gg->GetClFlagTable();
diff --git a/Source/cmVisualStudioGeneratorOptions.cxx b/Source/cmVisualStudioGeneratorOptions.cxx
index 1f808c8..51944fa 100644
--- a/Source/cmVisualStudioGeneratorOptions.cxx
+++ b/Source/cmVisualStudioGeneratorOptions.cxx
@@ -89,7 +89,7 @@ void cmVisualStudioGeneratorOptions::AddTable(cmVS7FlagTable const* table)
 void cmVisualStudioGeneratorOptions::ClearTables()
 {
   for (int i = 0; i < FlagTableCount; ++i) {
-    this->FlagTable[i] = CM_NULLPTR;
+    this->FlagTable[i] = nullptr;
   }
 }
 
diff --git a/Source/cmXMLParser.cxx b/Source/cmXMLParser.cxx
index 18afbf3..04cf91e 100644
--- a/Source/cmXMLParser.cxx
+++ b/Source/cmXMLParser.cxx
@@ -11,10 +11,10 @@
 
 cmXMLParser::cmXMLParser()
 {
-  this->Parser = CM_NULLPTR;
+  this->Parser = nullptr;
   this->ParseError = 0;
-  this->ReportCallback = CM_NULLPTR;
-  this->ReportCallbackData = CM_NULLPTR;
+  this->ReportCallback = nullptr;
+  this->ReportCallbackData = nullptr;
 }
 
 cmXMLParser::~cmXMLParser()
@@ -55,7 +55,7 @@ int cmXMLParser::InitializeParser()
   }
 
   // Create the expat XML parser.
-  this->Parser = XML_ParserCreate(CM_NULLPTR);
+  this->Parser = XML_ParserCreate(nullptr);
   XML_SetElementHandler(static_cast<XML_Parser>(this->Parser),
                         &cmXMLParserStartElement, &cmXMLParserEndElement);
   XML_SetCharacterDataHandler(static_cast<XML_Parser>(this->Parser),
@@ -99,7 +99,7 @@ int cmXMLParser::CleanupParser()
 
   // Clean up the parser.
   XML_ParserFree(static_cast<XML_Parser>(this->Parser));
-  this->Parser = CM_NULLPTR;
+  this->Parser = nullptr;
 
   return result;
 }
@@ -156,7 +156,7 @@ const char* cmXMLParser::FindAttribute(const char** atts,
       }
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmXMLParserStartElement(void* parser, const char* name, const char** atts)
diff --git a/Source/cm_auto_ptr.hxx b/Source/cm_auto_ptr.hxx
index 773602a..1ac9220 100644
--- a/Source/cm_auto_ptr.hxx
+++ b/Source/cm_auto_ptr.hxx
@@ -112,7 +112,7 @@ public:
    *
    *   auto_ptr<X> ptr(new X());
    */
-  explicit auto_ptr(X* p = CM_NULLPTR) throw()
+  explicit auto_ptr(X* p = nullptr) throw()
     : x_(p)
   {
   }
@@ -154,7 +154,7 @@ public:
   X* release() throw()
   {
     X* x = this->x_;
-    this->x_ = CM_NULLPTR;
+    this->x_ = nullptr;
     return x;
   }
 
diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index 4269a10..425e221 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -163,9 +163,9 @@ cmake::cmake(Role role)
   }
 #endif
 
-  this->GlobalGenerator = CM_NULLPTR;
-  this->ProgressCallback = CM_NULLPTR;
-  this->ProgressCallbackClientData = CM_NULLPTR;
+  this->GlobalGenerator = nullptr;
+  this->ProgressCallback = nullptr;
+  this->ProgressCallbackClientData = nullptr;
   this->CurrentWorkingMode = NORMAL_MODE;
 
 #ifdef CMAKE_BUILD_WITH_CMAKE
@@ -215,7 +215,7 @@ cmake::~cmake()
   delete this->Messenger;
   if (this->GlobalGenerator) {
     delete this->GlobalGenerator;
-    this->GlobalGenerator = CM_NULLPTR;
+    this->GlobalGenerator = nullptr;
   }
   cmDeleteAll(this->Generators);
 #ifdef CMAKE_BUILD_WITH_CMAKE
@@ -555,7 +555,7 @@ bool cmake::FindPackage(const std::vector<std::string>& args)
     gg->CreateGenerationObjects();
     cmLocalGenerator* lg = gg->LocalGenerators[0];
     std::string includeFlags =
-      lg->GetIncludeFlags(includeDirs, CM_NULLPTR, language);
+      lg->GetIncludeFlags(includeDirs, nullptr, language);
 
     std::string definitions = mf->GetSafeDefinition("PACKAGE_DEFINITIONS");
     printf("%s %s\n", includeFlags.c_str(), definitions.c_str());
@@ -983,7 +983,7 @@ createExtraGenerator(
     }
   }
   return std::make_pair(
-    static_cast<cmExternalMakefileProjectGenerator*>(CM_NULLPTR), name);
+    static_cast<cmExternalMakefileProjectGenerator*>(nullptr), name);
 }
 
 cmGlobalGenerator* cmake::CreateGlobalGenerator(const std::string& gname)
@@ -993,7 +993,7 @@ cmGlobalGenerator* cmake::CreateGlobalGenerator(const std::string& gname)
   cmExternalMakefileProjectGenerator* extraGenerator = extra.first;
   const std::string name = extra.second;
 
-  cmGlobalGenerator* generator = CM_NULLPTR;
+  cmGlobalGenerator* generator = nullptr;
   for (RegisteredGeneratorsVector::const_iterator i = this->Generators.begin();
        i != this->Generators.end(); ++i) {
     generator = (*i)->CreateGlobalGenerator(name, this);
@@ -2127,7 +2127,7 @@ cmInstalledFile const* cmake::GetInstalledFile(const std::string& name) const
     cmInstalledFile const& file = i->second;
     return &file;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 int cmake::GetSystemInformation(std::vector<std::string>& args)
diff --git a/Source/cmake.h b/Source/cmake.h
index 4ddacf7..c5d5b63 100644
--- a/Source/cmake.h
+++ b/Source/cmake.h
@@ -268,8 +268,7 @@ public:
    *  number provided may be negative in cases where a message is
    *  to be displayed without any progress percentage.
    */
-  void SetProgressCallback(ProgressCallbackType f,
-                           void* clientData = CM_NULLPTR);
+  void SetProgressCallback(ProgressCallbackType f, void* clientData = nullptr);
 
   ///! this is called by generators to update the progress
   void UpdateProgress(const char* msg, float prog);
diff --git a/Source/cmakemain.cxx b/Source/cmakemain.cxx
index dd88083..c0d20eb 100644
--- a/Source/cmakemain.cxx
+++ b/Source/cmakemain.cxx
@@ -33,23 +33,22 @@
 
 #ifdef CMAKE_BUILD_WITH_CMAKE
 static const char* cmDocumentationName[][2] = {
-  { CM_NULLPTR, "  cmake - Cross-Platform Makefile Generator." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cmake - Cross-Platform Makefile Generator." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsage[][2] = {
-  { CM_NULLPTR, "  cmake [options] <path-to-source>\n"
-                "  cmake [options] <path-to-existing-build>" },
-  { CM_NULLPTR,
-    "Specify a source directory to (re-)generate a build system for "
-    "it in the current working directory.  Specify an existing build "
-    "directory to re-generate its build system." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cmake [options] <path-to-source>\n"
+             "  cmake [options] <path-to-existing-build>" },
+  { nullptr, "Specify a source directory to (re-)generate a build system for "
+             "it in the current working directory.  Specify an existing build "
+             "directory to re-generate its build system." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsageNote[][2] = {
-  { CM_NULLPTR, "Run 'cmake --help' for more information." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "Run 'cmake --help' for more information." },
+  { nullptr, nullptr }
 };
 
 #define CMAKE_BUILD_OPTIONS                                                   \
@@ -85,7 +84,7 @@ static const char* cmDocumentationOptions[][2] = {
   { "--no-warn-unused-cli", "Don't warn about command line options." },
   { "--check-system-vars", "Find problems with variable usage in system "
                            "files." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, nullptr }
 };
 
 #endif
@@ -111,7 +110,7 @@ static cmMakefile* cmakemainGetMakefile(void* clientdata)
       return gg->GetCurrentMakefile();
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static std::string cmakemainGetStack(void* clientdata)
diff --git a/Source/cmcmd.cxx b/Source/cmcmd.cxx
index c546c7e..6b9a4a4 100644
--- a/Source/cmcmd.cxx
+++ b/Source/cmcmd.cxx
@@ -349,8 +349,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
         // Run the iwyu command line.  Capture its stderr and hide its stdout.
         // Ignore its return code because the tool always returns non-zero.
         std::string stdErr;
-        if (!cmSystemTools::RunSingleCommand(iwyu_cmd, CM_NULLPTR, &stdErr,
-                                             &ret, CM_NULLPTR,
+        if (!cmSystemTools::RunSingleCommand(iwyu_cmd, nullptr, &stdErr, &ret,
+                                             nullptr,
                                              cmSystemTools::OUTPUT_NONE)) {
           std::cerr << "Error running '" << iwyu_cmd[0] << "': " << stdErr
                     << "\n";
@@ -380,7 +380,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
         std::string stdOut;
         std::string stdErr;
         if (!cmSystemTools::RunSingleCommand(tidy_cmd, &stdOut, &stdErr, &ret,
-                                             CM_NULLPTR,
+                                             nullptr,
                                              cmSystemTools::OUTPUT_NONE)) {
           std::cerr << "Error running '" << tidy_cmd[0] << "': " << stdErr
                     << "\n";
@@ -410,7 +410,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
         std::string stdOut;
         std::string stdErr;
         if (!cmSystemTools::RunSingleCommand(lwyu_cmd, &stdOut, &stdErr, &ret,
-                                             CM_NULLPTR,
+                                             nullptr,
                                              cmSystemTools::OUTPUT_NONE)) {
           std::cerr << "Error running '" << lwyu_cmd[0] << "': " << stdErr
                     << "\n";
@@ -433,7 +433,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
         // Run the cpplint command line.  Capture its output.
         std::string stdOut;
         if (!cmSystemTools::RunSingleCommand(cpplint_cmd, &stdOut, &stdOut,
-                                             &ret, CM_NULLPTR,
+                                             &ret, nullptr,
                                              cmSystemTools::OUTPUT_NONE)) {
           std::cerr << "Error running '" << cpplint_cmd[0] << "': " << stdOut
                     << "\n";
@@ -453,7 +453,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       // Now run the real compiler command and return its result value.
       if (lwyu.empty() &&
           !cmSystemTools::RunSingleCommand(
-            orig_cmd, CM_NULLPTR, CM_NULLPTR, &ret, CM_NULLPTR,
+            orig_cmd, nullptr, nullptr, &ret, nullptr,
             cmSystemTools::OUTPUT_PASSTHROUGH)) {
         std::cerr << "Error running '" << orig_cmd[0] << "'\n";
         return 1;
@@ -504,8 +504,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       // Execute command from remaining arguments.
       std::vector<std::string> cmd(ai, ae);
       int retval;
-      if (cmSystemTools::RunSingleCommand(cmd, CM_NULLPTR, CM_NULLPTR, &retval,
-                                          CM_NULLPTR,
+      if (cmSystemTools::RunSingleCommand(cmd, nullptr, nullptr, &retval,
+                                          nullptr,
                                           cmSystemTools::OUTPUT_PASSTHROUGH)) {
         return retval;
       }
@@ -630,7 +630,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       time(&time_start);
       clock_start = clock();
       int ret = 0;
-      cmSystemTools::RunSingleCommand(command, CM_NULLPTR, CM_NULLPTR, &ret);
+      cmSystemTools::RunSingleCommand(command, nullptr, nullptr, &ret);
 
       clock_finish = clock();
       time(&time_finish);
@@ -686,8 +686,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       int retval = 0;
       int timeout = 0;
       if (cmSystemTools::RunSingleCommand(
-            command.c_str(), CM_NULLPTR, CM_NULLPTR, &retval,
-            directory.c_str(), cmSystemTools::OUTPUT_PASSTHROUGH, timeout)) {
+            command.c_str(), nullptr, nullptr, &retval, directory.c_str(),
+            cmSystemTools::OUTPUT_PASSTHROUGH, timeout)) {
         return retval;
       }
 
@@ -1315,7 +1315,7 @@ int cmcmd::ExecuteLinkScript(std::vector<std::string>& args)
     }
 
     // Setup this command line.
-    const char* cmd[2] = { command.c_str(), CM_NULLPTR };
+    const char* cmd[2] = { command.c_str(), nullptr };
     cmsysProcess_SetCommand(cp, cmd);
 
     // Report the command if verbose output is enabled.
@@ -1325,7 +1325,7 @@ int cmcmd::ExecuteLinkScript(std::vector<std::string>& args)
 
     // Run the command and wait for it to exit.
     cmsysProcess_Execute(cp);
-    cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+    cmsysProcess_WaitForExit(cp, nullptr);
 
     // Report failure if any.
     switch (cmsysProcess_GetState(cp)) {
@@ -1442,7 +1442,7 @@ int cmcmd::VisualStudioLink(std::vector<std::string>& args, int type)
 }
 
 static bool RunCommand(const char* comment, std::vector<std::string>& command,
-                       bool verbose, int* retCodeOut = CM_NULLPTR)
+                       bool verbose, int* retCodeOut = nullptr)
 {
   if (verbose) {
     std::cout << comment << ":\n";
@@ -1451,9 +1451,8 @@ static bool RunCommand(const char* comment, std::vector<std::string>& command,
   std::string output;
   int retCode = 0;
   // use rc command to create .res file
-  bool res =
-    cmSystemTools::RunSingleCommand(command, &output, &output, &retCode,
-                                    CM_NULLPTR, cmSystemTools::OUTPUT_NONE);
+  bool res = cmSystemTools::RunSingleCommand(
+    command, &output, &output, &retCode, nullptr, cmSystemTools::OUTPUT_NONE);
   // always print the output of the command, unless
   // it is the dumb rc command banner, but if the command
   // returned an error code then print the output anyway as
diff --git a/Source/ctest.cxx b/Source/ctest.cxx
index 8f9e676..d04a2de 100644
--- a/Source/ctest.cxx
+++ b/Source/ctest.cxx
@@ -18,13 +18,13 @@
 #include <vector>
 
 static const char* cmDocumentationName[][2] = {
-  { CM_NULLPTR, "  ctest - Testing driver provided by CMake." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  ctest - Testing driver provided by CMake." },
+  { nullptr, nullptr }
 };
 
-static const char* cmDocumentationUsage[][2] = { { CM_NULLPTR,
+static const char* cmDocumentationUsage[][2] = { { nullptr,
                                                    "  ctest [options]" },
-                                                 { CM_NULLPTR, CM_NULLPTR } };
+                                                 { nullptr, nullptr } };
 
 static const char* cmDocumentationOptions[][2] = {
   { "-C <cfg>, --build-config <cfg>", "Choose configuration to test." },
@@ -120,7 +120,7 @@ static const char* cmDocumentationOptions[][2] = {
   { "--http1.0", "Submit using HTTP 1.0." },
   { "--no-compress-output", "Do not compress test output when submitting." },
   { "--print-labels", "Print all available test labels." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, nullptr }
 };
 
 // this is a test driver program for cmCTest.
diff --git a/Tests/CMakeLib/run_compile_commands.cxx b/Tests/CMakeLib/run_compile_commands.cxx
index 46431bc..3a91c21 100644
--- a/Tests/CMakeLib/run_compile_commands.cxx
+++ b/Tests/CMakeLib/run_compile_commands.cxx
@@ -150,8 +150,7 @@ int main()
        it != end; ++it) {
     std::vector<std::string> command;
     cmSystemTools::ParseUnixCommandLine(it->at("command").c_str(), command);
-    if (!cmSystemTools::RunSingleCommand(command, CM_NULLPTR, CM_NULLPTR,
-                                         CM_NULLPTR,
+    if (!cmSystemTools::RunSingleCommand(command, nullptr, nullptr, nullptr,
                                          it->at("directory").c_str())) {
       std::cout << "ERROR: Failed to run command \"" << command[0] << "\""
                 << std::endl;
diff --git a/Tests/CMakeLib/testXMLSafe.cxx b/Tests/CMakeLib/testXMLSafe.cxx
index fe776c5..e6ee1e3 100644
--- a/Tests/CMakeLib/testXMLSafe.cxx
+++ b/Tests/CMakeLib/testXMLSafe.cxx
@@ -21,7 +21,7 @@ static test_pair const pairs[] = {
   { "angles <>", "angles &lt;&gt;" },
   { "ampersand &", "ampersand &amp;" },
   { "bad-byte \x80", "bad-byte [NON-UTF-8-BYTE-0x80]" },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, nullptr }
 };
 
 int testXMLSafe(int /*unused*/, char* /*unused*/ [])
diff --git a/bootstrap b/bootstrap
index 378d92e..ba33195 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1203,7 +1203,6 @@ cmake_report cmConfigure.h${_tmp} "#define CMAKE_DATA_DIR \"/bootstrap-not-insal
 cmake_report cmConfigure.h${_tmp} "#define CMAKE_BOOTSTRAP"
 cmake_report cmConfigure.h${_tmp} "#define CM_EQ_DELETE"
 cmake_report cmConfigure.h${_tmp} "#define CM_FALLTHROUGH"
-cmake_report cmConfigure.h${_tmp} "#define CM_NULLPTR 0"
 cmake_report cmConfigure.h${_tmp} "#define CM_OVERRIDE"
 cmake_report cmConfigure.h${_tmp} "#define CM_DISABLE_COPY(Class)"