Retire std::auto_ptr and its macro CM_AUTO_PTR

Signed-off-by: Matthias Maennich <matthias@maennich.net>

51 files changed, 351 insertions, 562 deletions

diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index 9cd7b84..fdc6476 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -587,7 +587,6 @@ set(SRCS
   cmWriteFileCommand.cxx
   cmWriteFileCommand.h
 
-  cm_auto_ptr.hxx
   cm_get_date.h
   cm_get_date.c
   cm_utf8.h
diff --git a/Source/CPack/cmCPackGenerator.cxx b/Source/CPack/cmCPackGenerator.cxx
index f56b5fa..ecb5adb 100644
--- a/Source/CPack/cmCPackGenerator.cxx
+++ b/Source/CPack/cmCPackGenerator.cxx
@@ -6,6 +6,7 @@
 #include "cmsys/Glob.hxx"
 #include "cmsys/RegularExpression.hxx"
 #include <algorithm>
+#include <memory> // IWYU pragma: keep
 #include <utility>
 
 #include "cmCPackComponentGroup.h"
@@ -17,7 +18,6 @@
 #include "cmStateSnapshot.h"
 #include "cmWorkingDirectory.h"
 #include "cmXMLSafe.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #if defined(__HAIKU__)
@@ -156,7 +156,7 @@ int cmCPackGenerator::PrepareNames()
   }
   const char* algoSignature = this->GetOption("CPACK_PACKAGE_CHECKSUM");
   if (algoSignature) {
-    if (cmCryptoHash::New(algoSignature).get() == nullptr) {
+    if (!cmCryptoHash::New(algoSignature)) {
       cmCPackLogger(cmCPackLog::LOG_ERROR, "Cannot recognize algorithm: "
                       << algoSignature << std::endl);
       return 0;
@@ -610,8 +610,7 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         cm.AddCMakePaths();
         cm.SetProgressCallback(cmCPackGeneratorProgress, this);
         cmGlobalGenerator gg(&cm);
-        CM_AUTO_PTR<cmMakefile> mf(
-          new cmMakefile(&gg, cm.GetCurrentSnapshot()));
+        cmMakefile mf(&gg, cm.GetCurrentSnapshot());
         if (!installSubDirectory.empty() && installSubDirectory != "/" &&
             installSubDirectory != ".") {
           tempInstallDirectory += installSubDirectory;
@@ -657,11 +656,11 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
           if (this->GetOption("CPACK_INSTALL_PREFIX")) {
             dir += this->GetOption("CPACK_INSTALL_PREFIX");
           }
-          mf->AddDefinition("CMAKE_INSTALL_PREFIX", dir.c_str());
+          mf.AddDefinition("CMAKE_INSTALL_PREFIX", dir.c_str());
 
           cmCPackLogger(
             cmCPackLog::LOG_DEBUG,
-            "- Using DESTDIR + CPACK_INSTALL_PREFIX... (mf->AddDefinition)"
+            "- Using DESTDIR + CPACK_INSTALL_PREFIX... (mf.AddDefinition)"
               << std::endl);
           cmCPackLogger(cmCPackLog::LOG_DEBUG,
                         "- Setting CMAKE_INSTALL_PREFIX to '" << dir << "'"
@@ -698,8 +697,8 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
             return 0;
           }
         } else {
-          mf->AddDefinition("CMAKE_INSTALL_PREFIX",
-                            tempInstallDirectory.c_str());
+          mf.AddDefinition("CMAKE_INSTALL_PREFIX",
+                           tempInstallDirectory.c_str());
 
           if (!cmsys::SystemTools::MakeDirectory(
                 tempInstallDirectory.c_str())) {
@@ -710,7 +709,7 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
           }
 
           cmCPackLogger(cmCPackLog::LOG_DEBUG,
-                        "- Using non-DESTDIR install... (mf->AddDefinition)"
+                        "- Using non-DESTDIR install... (mf.AddDefinition)"
                           << std::endl);
           cmCPackLogger(cmCPackLog::LOG_DEBUG,
                         "- Setting CMAKE_INSTALL_PREFIX to '"
@@ -718,19 +717,19 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         }
 
         if (!buildConfig.empty()) {
-          mf->AddDefinition("BUILD_TYPE", buildConfig.c_str());
+          mf.AddDefinition("BUILD_TYPE", buildConfig.c_str());
         }
         std::string installComponentLowerCase =
           cmSystemTools::LowerCase(installComponent);
         if (installComponentLowerCase != "all") {
-          mf->AddDefinition("CMAKE_INSTALL_COMPONENT",
-                            installComponent.c_str());
+          mf.AddDefinition("CMAKE_INSTALL_COMPONENT",
+                           installComponent.c_str());
         }
 
         // strip on TRUE, ON, 1, one or several file names, but not on
         // FALSE, OFF, 0 and an empty string
         if (!cmSystemTools::IsOff(this->GetOption("CPACK_STRIP_FILES"))) {
-          mf->AddDefinition("CMAKE_INSTALL_DO_STRIP", "1");
+          mf.AddDefinition("CMAKE_INSTALL_DO_STRIP", "1");
         }
         // Remember the list of files before installation
         // of the current component (if we are in component install)
@@ -750,7 +749,7 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         // If CPack was asked to warn on ABSOLUTE INSTALL DESTINATION
         // then forward request to cmake_install.cmake script
         if (this->IsOn("CPACK_WARN_ON_ABSOLUTE_INSTALL_DESTINATION")) {
-          mf->AddDefinition("CMAKE_WARN_ON_ABSOLUTE_INSTALL_DESTINATION", "1");
+          mf.AddDefinition("CMAKE_WARN_ON_ABSOLUTE_INSTALL_DESTINATION", "1");
         }
         // If current CPack generator does support
         // ABSOLUTE INSTALL DESTINATION or CPack has been asked for
@@ -758,18 +757,17 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         // as soon as it occurs (before installing file)
         if (!SupportsAbsoluteDestination() ||
             this->IsOn("CPACK_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION")) {
-          mf->AddDefinition("CMAKE_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION",
-                            "1");
+          mf.AddDefinition("CMAKE_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION", "1");
         }
         // do installation
-        int res = mf->ReadListFile(installFile.c_str());
+        int res = mf.ReadListFile(installFile.c_str());
         // forward definition of CMAKE_ABSOLUTE_DESTINATION_FILES
         // to CPack (may be used by generators like CPack RPM or DEB)
         // in order to transparently handle ABSOLUTE PATH
-        if (mf->GetDefinition("CMAKE_ABSOLUTE_DESTINATION_FILES")) {
-          mf->AddDefinition(
+        if (mf.GetDefinition("CMAKE_ABSOLUTE_DESTINATION_FILES")) {
+          mf.AddDefinition(
             "CPACK_ABSOLUTE_DESTINATION_FILES",
-            mf->GetDefinition("CMAKE_ABSOLUTE_DESTINATION_FILES"));
+            mf.GetDefinition("CMAKE_ABSOLUTE_DESTINATION_FILES"));
         }
 
         // Now rebuild the list of files after installation
@@ -803,12 +801,12 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
           }
         }
 
-        if (nullptr != mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES")) {
+        if (nullptr != mf.GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES")) {
           if (!absoluteDestFiles.empty()) {
             absoluteDestFiles += ";";
           }
           absoluteDestFiles +=
-            mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES");
+            mf.GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES");
           cmCPackLogger(cmCPackLog::LOG_DEBUG,
                         "Got some ABSOLUTE DESTINATION FILES: "
                           << absoluteDestFiles << std::endl);
@@ -822,13 +820,13 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
                 this->GetOption(absoluteDestFileComponent);
               absoluteDestFilesListComponent += ";";
               absoluteDestFilesListComponent +=
-                mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES");
+                mf.GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES");
               this->SetOption(absoluteDestFileComponent,
                               absoluteDestFilesListComponent.c_str());
             } else {
               this->SetOption(
                 absoluteDestFileComponent,
-                mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES"));
+                mf.GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES"));
             }
           }
         }
@@ -964,7 +962,7 @@ int cmCPackGenerator::DoPackage()
 
   /* Prepare checksum algorithm*/
   const char* algo = this->GetOption("CPACK_PACKAGE_CHECKSUM");
-  CM_AUTO_PTR<cmCryptoHash> crypto = cmCryptoHash::New(algo ? algo : "");
+  std::unique_ptr<cmCryptoHash> crypto = cmCryptoHash::New(algo ? algo : "");
 
   /*
    * Copy the generated packages to final destination
@@ -997,7 +995,7 @@ int cmCPackGenerator::DoPackage()
                     << packageFileName << " generated." << std::endl);
 
     /* Generate checksum file */
-    if (crypto.get() != nullptr) {
+    if (crypto) {
       std::string hashFile(this->GetOption("CPACK_OUTPUT_FILE_PREFIX"));
       hashFile += "/" + filename;
       hashFile += "." + cmSystemTools::LowerCase(algo);
diff --git a/Source/CPack/cpack.cxx b/Source/CPack/cpack.cxx
index cc51c60..f2c54fc 100644
--- a/Source/CPack/cpack.cxx
+++ b/Source/CPack/cpack.cxx
@@ -5,6 +5,7 @@
 #include "cmsys/Encoding.hxx"
 #include <iostream>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stddef.h>
 #include <string>
@@ -24,7 +25,6 @@
 #include "cmMakefile.h"
 #include "cmStateSnapshot.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 static const char* cmDocumentationName[][2] = {
@@ -192,8 +192,7 @@ int main(int argc, char const* const* argv)
   cminst.SetHomeOutputDirectory("");
   cminst.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator cmgg(&cminst);
-  CM_AUTO_PTR<cmMakefile> globalMF(
-    new cmMakefile(&cmgg, cminst.GetCurrentSnapshot()));
+  cmMakefile globalMF(&cmgg, cminst.GetCurrentSnapshot());
 #if defined(__CYGWIN__)
   globalMF->AddDefinition("CMAKE_LEGACY_CYGWIN_WIN32", "0");
 #endif
@@ -225,16 +224,16 @@ int main(int argc, char const* const* argv)
     // find out which system cpack is running on, so it can setup the search
     // paths, so FIND_XXX() commands can be used in scripts
     std::string systemFile =
-      globalMF->GetModulesFile("CMakeDetermineSystem.cmake");
-    if (!globalMF->ReadListFile(systemFile.c_str())) {
+      globalMF.GetModulesFile("CMakeDetermineSystem.cmake");
+    if (!globalMF.ReadListFile(systemFile.c_str())) {
       cmCPack_Log(&log, cmCPackLog::LOG_ERROR,
                   "Error reading CMakeDetermineSystem.cmake" << std::endl);
       return 1;
     }
 
     systemFile =
-      globalMF->GetModulesFile("CMakeSystemSpecificInformation.cmake");
-    if (!globalMF->ReadListFile(systemFile.c_str())) {
+      globalMF.GetModulesFile("CMakeSystemSpecificInformation.cmake");
+    if (!globalMF.ReadListFile(systemFile.c_str())) {
       cmCPack_Log(&log, cmCPackLog::LOG_ERROR,
                   "Error reading CMakeSystemSpecificInformation.cmake"
                     << std::endl);
@@ -242,7 +241,7 @@ int main(int argc, char const* const* argv)
     }
 
     if (!cpackBuildConfig.empty()) {
-      globalMF->AddDefinition("CPACK_BUILD_CONFIG", cpackBuildConfig.c_str());
+      globalMF.AddDefinition("CPACK_BUILD_CONFIG", cpackBuildConfig.c_str());
     }
 
     if (cmSystemTools::FileExists(cpackConfigFile.c_str())) {
@@ -250,7 +249,7 @@ int main(int argc, char const* const* argv)
       cmCPack_Log(&log, cmCPackLog::LOG_VERBOSE,
                   "Read CPack configuration file: " << cpackConfigFile
                                                     << std::endl);
-      if (!globalMF->ReadListFile(cpackConfigFile.c_str())) {
+      if (!globalMF.ReadListFile(cpackConfigFile.c_str())) {
         cmCPack_Log(&log, cmCPackLog::LOG_ERROR,
                     "Problem reading CPack config file: \""
                       << cpackConfigFile << "\"" << std::endl);
@@ -264,45 +263,44 @@ int main(int argc, char const* const* argv)
     }
 
     if (!generator.empty()) {
-      globalMF->AddDefinition("CPACK_GENERATOR", generator.c_str());
+      globalMF.AddDefinition("CPACK_GENERATOR", generator.c_str());
     }
     if (!cpackProjectName.empty()) {
-      globalMF->AddDefinition("CPACK_PACKAGE_NAME", cpackProjectName.c_str());
+      globalMF.AddDefinition("CPACK_PACKAGE_NAME", cpackProjectName.c_str());
     }
     if (!cpackProjectVersion.empty()) {
-      globalMF->AddDefinition("CPACK_PACKAGE_VERSION",
-                              cpackProjectVersion.c_str());
+      globalMF.AddDefinition("CPACK_PACKAGE_VERSION",
+                             cpackProjectVersion.c_str());
     }
     if (!cpackProjectVendor.empty()) {
-      globalMF->AddDefinition("CPACK_PACKAGE_VENDOR",
-                              cpackProjectVendor.c_str());
+      globalMF.AddDefinition("CPACK_PACKAGE_VENDOR",
+                             cpackProjectVendor.c_str());
     }
     // if this is not empty it has been set on the command line
     // go for it. Command line override values set in config file.
     if (!cpackProjectDirectory.empty()) {
-      globalMF->AddDefinition("CPACK_PACKAGE_DIRECTORY",
-                              cpackProjectDirectory.c_str());
+      globalMF.AddDefinition("CPACK_PACKAGE_DIRECTORY",
+                             cpackProjectDirectory.c_str());
     }
     // The value has not been set on the command line
     else {
       // get a default value (current working directory)
       cpackProjectDirectory = cmsys::SystemTools::GetCurrentWorkingDirectory();
       // use default value iff no value has been provided by the config file
-      if (!globalMF->IsSet("CPACK_PACKAGE_DIRECTORY")) {
-        globalMF->AddDefinition("CPACK_PACKAGE_DIRECTORY",
-                                cpackProjectDirectory.c_str());
+      if (!globalMF.IsSet("CPACK_PACKAGE_DIRECTORY")) {
+        globalMF.AddDefinition("CPACK_PACKAGE_DIRECTORY",
+                               cpackProjectDirectory.c_str());
       }
     }
     for (auto const& cd : definitions.Map) {
-      globalMF->AddDefinition(cd.first, cd.second.c_str());
+      globalMF.AddDefinition(cd.first, cd.second.c_str());
     }
 
-    const char* cpackModulesPath =
-      globalMF->GetDefinition("CPACK_MODULE_PATH");
+    const char* cpackModulesPath = globalMF.GetDefinition("CPACK_MODULE_PATH");
     if (cpackModulesPath) {
-      globalMF->AddDefinition("CMAKE_MODULE_PATH", cpackModulesPath);
+      globalMF.AddDefinition("CMAKE_MODULE_PATH", cpackModulesPath);
     }
-    const char* genList = globalMF->GetDefinition("CPACK_GENERATOR");
+    const char* genList = globalMF.GetDefinition("CPACK_GENERATOR");
     if (!genList) {
       cmCPack_Log(&log, cmCPackLog::LOG_ERROR, "CPack generator not specified"
                     << std::endl);
@@ -310,8 +308,8 @@ int main(int argc, char const* const* argv)
       std::vector<std::string> generatorsVector;
       cmSystemTools::ExpandListArgument(genList, generatorsVector);
       for (std::string const& gen : generatorsVector) {
-        cmMakefile::ScopePushPop raii(globalMF.get());
-        cmMakefile* mf = globalMF.get();
+        cmMakefile::ScopePushPop raii(&globalMF);
+        cmMakefile* mf = &globalMF;
         cmCPack_Log(&log, cmCPackLog::LOG_VERBOSE,
                     "Specified generator: " << gen << std::endl);
         if (parsed && !mf->GetDefinition("CPACK_PACKAGE_NAME")) {
diff --git a/Source/CTest/cmCTestLaunch.cxx b/Source/CTest/cmCTestLaunch.cxx
index 453ae99..a1249f5 100644
--- a/Source/CTest/cmCTestLaunch.cxx
+++ b/Source/CTest/cmCTestLaunch.cxx
@@ -6,6 +6,7 @@
 #include "cmsys/Process.h"
 #include "cmsys/RegularExpression.hxx"
 #include <iostream>
+#include <memory> // IWYU pragma: keep
 #include <stdlib.h>
 #include <string.h>
 
@@ -17,7 +18,6 @@
 #include "cmStateSnapshot.h"
 #include "cmSystemTools.h"
 #include "cmXMLWriter.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #ifdef _WIN32
@@ -626,12 +626,12 @@ void cmCTestLaunch::LoadConfig()
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator gg(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&gg, cm.GetCurrentSnapshot()));
+  cmMakefile mf(&gg, cm.GetCurrentSnapshot());
   std::string fname = this->LogDir;
   fname += "CTestLaunchConfig.cmake";
   if (cmSystemTools::FileExists(fname.c_str()) &&
-      mf->ReadListFile(fname.c_str())) {
-    this->SourceDir = mf->GetSafeDefinition("CTEST_SOURCE_DIRECTORY");
+      mf.ReadListFile(fname.c_str())) {
+    this->SourceDir = mf.GetSafeDefinition("CTEST_SOURCE_DIRECTORY");
     cmSystemTools::ConvertToUnixSlashes(this->SourceDir);
   }
 }
diff --git a/Source/CTest/cmCTestTestHandler.cxx b/Source/CTest/cmCTestTestHandler.cxx
index 5896014..c7ed927 100644
--- a/Source/CTest/cmCTestTestHandler.cxx
+++ b/Source/CTest/cmCTestTestHandler.cxx
@@ -8,6 +8,7 @@
 #include <functional>
 #include <iomanip>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <sstream>
 #include <stdio.h>
@@ -28,7 +29,6 @@
 #include "cmSystemTools.h"
 #include "cmWorkingDirectory.h"
 #include "cmXMLWriter.h"
-#include "cm_auto_ptr.hxx"
 #include "cm_utf8.h"
 #include "cmake.h"
 #include "cmsys/FStream.hxx"
@@ -1636,9 +1636,9 @@ void cmCTestTestHandler::GetListOfTests()
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator gg(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&gg, cm.GetCurrentSnapshot()));
-  mf->AddDefinition("CTEST_CONFIGURATION_TYPE",
-                    this->CTest->GetConfigType().c_str());
+  cmMakefile mf(&gg, cm.GetCurrentSnapshot());
+  mf.AddDefinition("CTEST_CONFIGURATION_TYPE",
+                   this->CTest->GetConfigType().c_str());
 
   // Add handler for ADD_TEST
   cmCTestAddTestCommand* newCom1 = new cmCTestAddTestCommand;
@@ -1678,7 +1678,7 @@ void cmCTestTestHandler::GetListOfTests()
     return;
   }
 
-  if (!mf->ReadListFile(testFilename)) {
+  if (!mf.ReadListFile(testFilename)) {
     return;
   }
   if (cmSystemTools::GetErrorOccuredFlag()) {
diff --git a/Source/CTest/cmCTestUpdateHandler.cxx b/Source/CTest/cmCTestUpdateHandler.cxx
index 7173439..786ed5e 100644
--- a/Source/CTest/cmCTestUpdateHandler.cxx
+++ b/Source/CTest/cmCTestUpdateHandler.cxx
@@ -2,6 +2,7 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCTestUpdateHandler.h"
 
+#include "cmAlgorithms.h"
 #include "cmCLocaleEnvironmentScope.h"
 #include "cmCTest.h"
 #include "cmCTestBZR.h"
@@ -16,7 +17,7 @@
 #include "cmVersion.h"
 #include "cmXMLWriter.h"
 
-#include "cm_auto_ptr.hxx"
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 
 static const char* cmCTestUpdateHandlerUpdateStrings[] = {
@@ -134,28 +135,28 @@ int cmCTestUpdateHandler::ProcessHandler()
                      , this->Quiet);
 
   // Create an object to interact with the VCS tool.
-  CM_AUTO_PTR<cmCTestVC> vc;
+  std::unique_ptr<cmCTestVC> vc;
   switch (this->UpdateType) {
     case e_CVS:
-      vc.reset(new cmCTestCVS(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestCVS>(this->CTest, ofs);
       break;
     case e_SVN:
-      vc.reset(new cmCTestSVN(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestSVN>(this->CTest, ofs);
       break;
     case e_BZR:
-      vc.reset(new cmCTestBZR(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestBZR>(this->CTest, ofs);
       break;
     case e_GIT:
-      vc.reset(new cmCTestGIT(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestGIT>(this->CTest, ofs);
       break;
     case e_HG:
-      vc.reset(new cmCTestHG(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestHG>(this->CTest, ofs);
       break;
     case e_P4:
-      vc.reset(new cmCTestP4(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestP4>(this->CTest, ofs);
       break;
     default:
-      vc.reset(new cmCTestVC(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestVC>(this->CTest, ofs);
       break;
   }
   vc->SetCommandLineTool(this->UpdateCommand);
diff --git a/Source/cmCTest.cxx b/Source/cmCTest.cxx
index ba50986..e248219 100644
--- a/Source/cmCTest.cxx
+++ b/Source/cmCTest.cxx
@@ -15,6 +15,7 @@
 #include <ctype.h>
 #include <iostream>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -50,7 +51,6 @@
 #include "cmVersion.h"
 #include "cmVersionConfig.h"
 #include "cmXMLWriter.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #if defined(__BEOS__) || defined(__HAIKU__)
@@ -421,9 +421,8 @@ int cmCTest::Initialize(const char* binary_dir, cmCTestStartCommand* command)
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator gg(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&gg, cm.GetCurrentSnapshot()));
-  if (!this->ReadCustomConfigurationFileTree(this->BinaryDir.c_str(),
-                                             mf.get())) {
+  cmMakefile mf(&gg, cm.GetCurrentSnapshot());
+  if (!this->ReadCustomConfigurationFileTree(this->BinaryDir.c_str(), &mf)) {
     cmCTestOptionalLog(
       this, DEBUG, "Cannot find custom configuration file tree" << std::endl,
       quiet);
@@ -1123,9 +1122,9 @@ int cmCTest::RunTest(std::vector<const char*> argv, std::string* output,
       *log << "* Run internal CTest" << std::endl;
     }
 
-    CM_AUTO_PTR<cmSystemTools::SaveRestoreEnvironment> saveEnv;
+    std::unique_ptr<cmSystemTools::SaveRestoreEnvironment> saveEnv;
     if (modifyEnv) {
-      saveEnv.reset(new cmSystemTools::SaveRestoreEnvironment);
+      saveEnv = cm::make_unique<cmSystemTools::SaveRestoreEnvironment>();
       cmSystemTools::AppendEnv(*environment);
     }
 
@@ -1150,9 +1149,9 @@ int cmCTest::RunTest(std::vector<const char*> argv, std::string* output,
     output->clear();
   }
 
-  CM_AUTO_PTR<cmSystemTools::SaveRestoreEnvironment> saveEnv;
+  std::unique_ptr<cmSystemTools::SaveRestoreEnvironment> saveEnv;
   if (modifyEnv) {
-    saveEnv.reset(new cmSystemTools::SaveRestoreEnvironment);
+    saveEnv = cm::make_unique<cmSystemTools::SaveRestoreEnvironment>();
     cmSystemTools::AppendEnv(*environment);
   }
 
diff --git a/Source/cmCryptoHash.cxx b/Source/cmCryptoHash.cxx
index 965f55b..d914eb1 100644
--- a/Source/cmCryptoHash.cxx
+++ b/Source/cmCryptoHash.cxx
@@ -2,11 +2,14 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCryptoHash.h"
 
+#include "cmAlgorithms.h"
 #include "cm_kwiml.h"
 #include "cm_rhash.h"
 #include "cmsys/FStream.hxx"
 #include <string.h>
 
+#include <memory> // IWYU pragma: keep
+
 static unsigned int const cmCryptoHashAlgoToId[] = {
   /* clang-format needs this comment to break after the opening brace */
   RHASH_MD5,      //
@@ -43,39 +46,39 @@ cmCryptoHash::~cmCryptoHash()
   rhash_free(this->CTX);
 }
 
-CM_AUTO_PTR<cmCryptoHash> cmCryptoHash::New(const char* algo)
+std::unique_ptr<cmCryptoHash> cmCryptoHash::New(const char* algo)
 {
   if (strcmp(algo, "MD5") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoMD5));
+    return cm::make_unique<cmCryptoHash>(AlgoMD5);
   }
   if (strcmp(algo, "SHA1") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA1));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA1);
   }
   if (strcmp(algo, "SHA224") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA224));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA224);
   }
   if (strcmp(algo, "SHA256") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA256));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA256);
   }
   if (strcmp(algo, "SHA384") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA384));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA384);
   }
   if (strcmp(algo, "SHA512") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA512));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA512);
   }
   if (strcmp(algo, "SHA3_224") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA3_224));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA3_224);
   }
   if (strcmp(algo, "SHA3_256") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA3_256));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA3_256);
   }
   if (strcmp(algo, "SHA3_384") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA3_384));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA3_384);
   }
   if (strcmp(algo, "SHA3_512") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA3_512));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA3_512);
   }
-  return CM_AUTO_PTR<cmCryptoHash>(nullptr);
+  return std::unique_ptr<cmCryptoHash>(nullptr);
 }
 
 bool cmCryptoHash::IntFromHexDigit(char input, char& output)
diff --git a/Source/cmCryptoHash.h b/Source/cmCryptoHash.h
index 9c13968..1f2a1b5 100644
--- a/Source/cmCryptoHash.h
+++ b/Source/cmCryptoHash.h
@@ -5,12 +5,11 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include <memory> // IWYU pragma: keep
 #include <stddef.h>
 #include <string>
 #include <vector>
 
-#include "cm_auto_ptr.hxx"
-
 /**
  * @brief Abstract base class for cryptographic hash generators
  */
@@ -42,7 +41,7 @@ public:
   ///      SHA3_224, SHA3_256, SHA3_384, SHA3_512
   /// @return A valid auto pointer if algo is supported or
   ///         an invalid/NULL pointer otherwise
-  static CM_AUTO_PTR<cmCryptoHash> New(const char* algo);
+  static std::unique_ptr<cmCryptoHash> New(const char* algo);
 
   /// @brief Converts a hex character to its binary value (4 bits)
   /// @arg input Hex character [0-9a-fA-F].
diff --git a/Source/cmCustomCommandGenerator.cxx b/Source/cmCustomCommandGenerator.cxx
index ff62a60..3d816d5 100644
--- a/Source/cmCustomCommandGenerator.cxx
+++ b/Source/cmCustomCommandGenerator.cxx
@@ -11,8 +11,8 @@
 #include "cmOutputConverter.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 
+#include <memory> // IWYU pragma: keep
 #include <stddef.h>
 
 cmCustomCommandGenerator::cmCustomCommandGenerator(cmCustomCommand const& cc,
@@ -29,7 +29,8 @@ cmCustomCommandGenerator::cmCustomCommandGenerator(cmCustomCommand const& cc,
   for (cmCustomCommandLine const& cmdline : cmdlines) {
     cmCustomCommandLine argv;
     for (std::string const& clarg : cmdline) {
-      CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = this->GE->Parse(clarg);
+      std::unique_ptr<cmCompiledGeneratorExpression> cge =
+        this->GE->Parse(clarg);
       std::string parsed_arg = cge->Evaluate(this->LG, this->Config);
       if (this->CC.GetCommandExpandLists()) {
         std::vector<std::string> ExpandedArg;
@@ -44,7 +45,7 @@ cmCustomCommandGenerator::cmCustomCommandGenerator(cmCustomCommand const& cc,
 
   std::vector<std::string> depends = this->CC.GetDepends();
   for (std::string const& d : depends) {
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = this->GE->Parse(d);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = this->GE->Parse(d);
     std::vector<std::string> result;
     cmSystemTools::ExpandListArgument(cge->Evaluate(this->LG, this->Config),
                                       result);
diff --git a/Source/cmELF.cxx b/Source/cmELF.cxx
index 2d6d8f9..76374b2 100644
--- a/Source/cmELF.cxx
+++ b/Source/cmELF.cxx
@@ -2,10 +2,10 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmELF.h"
 
-#include "cm_auto_ptr.hxx"
 #include "cm_kwiml.h"
 #include "cmsys/FStream.hxx"
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stddef.h>
 #include <utility>
@@ -108,7 +108,7 @@ public:
   };
 
   // Construct and take ownership of the file stream object.
-  cmELFInternal(cmELF* external, CM_AUTO_PTR<cmsys::ifstream>& fin,
+  cmELFInternal(cmELF* external, std::unique_ptr<cmsys::ifstream>& fin,
                 ByteOrderType order)
     : External(external)
     , Stream(*fin.release())
@@ -231,7 +231,7 @@ public:
   typedef typename Types::tagtype tagtype;
 
   // Construct with a stream and byte swap indicator.
-  cmELFInternalImpl(cmELF* external, CM_AUTO_PTR<cmsys::ifstream>& fin,
+  cmELFInternalImpl(cmELF* external, std::unique_ptr<cmsys::ifstream>& fin,
                     ByteOrderType order);
 
   // Return the number of sections as specified by the ELF header.
@@ -424,9 +424,8 @@ private:
 };
 
 template <class Types>
-cmELFInternalImpl<Types>::cmELFInternalImpl(cmELF* external,
-                                            CM_AUTO_PTR<cmsys::ifstream>& fin,
-                                            ByteOrderType order)
+cmELFInternalImpl<Types>::cmELFInternalImpl(
+  cmELF* external, std::unique_ptr<cmsys::ifstream>& fin, ByteOrderType order)
   : cmELFInternal(external, fin, order)
 {
   // Read the main header.
@@ -682,7 +681,7 @@ cmELF::cmELF(const char* fname)
   : Internal(nullptr)
 {
   // Try to open the file.
-  CM_AUTO_PTR<cmsys::ifstream> fin(new cmsys::ifstream(fname));
+  std::unique_ptr<cmsys::ifstream> fin(new cmsys::ifstream(fname));
 
   // Quit now if the file could not be opened.
   if (!fin.get() || !*fin) {
diff --git a/Source/cmExportBuildAndroidMKGenerator.cxx b/Source/cmExportBuildAndroidMKGenerator.cxx
index b5b7214..5e2cd53 100644
--- a/Source/cmExportBuildAndroidMKGenerator.cxx
+++ b/Source/cmExportBuildAndroidMKGenerator.cxx
@@ -3,6 +3,7 @@
 #include "cmExportBuildAndroidMKGenerator.h"
 
 #include <algorithm>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <utility>
 
@@ -15,7 +16,6 @@
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmExportBuildAndroidMKGenerator::cmExportBuildAndroidMKGenerator()
@@ -126,7 +126,7 @@ void cmExportBuildAndroidMKGenerator::GenerateInterfaceProperties(
             // evaluate any generator expressions with the current
             // build type of the makefile
             cmGeneratorExpression ge;
-            CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(lib);
+            std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(lib);
             std::string evaluated =
               cge->Evaluate(target->GetLocalGenerator(), config);
             bool relpath = false;
diff --git a/Source/cmExportFileGenerator.cxx b/Source/cmExportFileGenerator.cxx
index e729632..7f0cb97 100644
--- a/Source/cmExportFileGenerator.cxx
+++ b/Source/cmExportFileGenerator.cxx
@@ -17,9 +17,9 @@
 #include "cmTargetExport.h"
 #include "cmake.h"
 
-#include "cm_auto_ptr.hxx"
 #include "cmsys/FStream.hxx"
 #include <assert.h>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <string.h>
 #include <utility>
@@ -65,18 +65,17 @@ const char* cmExportFileGenerator::GetMainExportFileName() const
 bool cmExportFileGenerator::GenerateImportFile()
 {
   // Open the output file to generate it.
-  CM_AUTO_PTR<cmsys::ofstream> foutPtr;
+  std::unique_ptr<cmsys::ofstream> foutPtr;
   if (this->AppendMode) {
     // Open for append.
-    CM_AUTO_PTR<cmsys::ofstream> ap(
-      new cmsys::ofstream(this->MainImportFile.c_str(), std::ios::app));
-    foutPtr = ap;
+    foutPtr = cm::make_unique<cmsys::ofstream>(this->MainImportFile.c_str(),
+                                               std::ios::app);
   } else {
     // Generate atomically and with copy-if-different.
-    CM_AUTO_PTR<cmGeneratedFileStream> ap(
+    std::unique_ptr<cmGeneratedFileStream> ap(
       new cmGeneratedFileStream(this->MainImportFile.c_str(), true));
     ap->SetCopyIfDifferent(true);
-    foutPtr = ap;
+    foutPtr = std::move(ap);
   }
   if (!foutPtr.get() || !*foutPtr) {
     std::string se = cmSystemTools::GetLastSystemError();
@@ -372,7 +371,7 @@ void cmExportFileGenerator::PopulateIncludeDirectoriesInterface(
   std::string dirs = cmGeneratorExpression::Preprocess(
     tei->InterfaceIncludeDirectories, preprocessRule, true);
   this->ReplaceInstallPrefix(dirs);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(dirs);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(dirs);
   std::string exportDirs =
     cge->Evaluate(target->GetLocalGenerator(), "", false, target);
 
diff --git a/Source/cmExportLibraryDependenciesCommand.cxx b/Source/cmExportLibraryDependenciesCommand.cxx
index cf12d33..50f8cb0 100644
--- a/Source/cmExportLibraryDependenciesCommand.cxx
+++ b/Source/cmExportLibraryDependenciesCommand.cxx
@@ -4,8 +4,10 @@
 
 #include "cmsys/FStream.hxx"
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <utility>
 
+#include "cmAlgorithms.h"
 #include "cmGeneratedFileStream.h"
 #include "cmGlobalGenerator.h"
 #include "cmMakefile.h"
@@ -13,7 +15,6 @@
 #include "cmSystemTools.h"
 #include "cmTarget.h"
 #include "cmTargetLinkLibraryType.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 class cmExecutionStatus;
@@ -47,16 +48,15 @@ void cmExportLibraryDependenciesCommand::FinalPass()
 void cmExportLibraryDependenciesCommand::ConstFinalPass() const
 {
   // Use copy-if-different if not appending.
-  CM_AUTO_PTR<cmsys::ofstream> foutPtr;
+  std::unique_ptr<cmsys::ofstream> foutPtr;
   if (this->Append) {
-    CM_AUTO_PTR<cmsys::ofstream> ap(
-      new cmsys::ofstream(this->Filename.c_str(), std::ios::app));
-    foutPtr = ap;
+    foutPtr =
+      cm::make_unique<cmsys::ofstream>(this->Filename.c_str(), std::ios::app);
   } else {
-    CM_AUTO_PTR<cmGeneratedFileStream> ap(
+    std::unique_ptr<cmGeneratedFileStream> ap(
       new cmGeneratedFileStream(this->Filename.c_str(), true));
     ap->SetCopyIfDifferent(true);
-    foutPtr = ap;
+    foutPtr = std::move(ap);
   }
   std::ostream& fout = *foutPtr;
 
diff --git a/Source/cmExportTryCompileFileGenerator.cxx b/Source/cmExportTryCompileFileGenerator.cxx
index 3e3fea1..1fb9cf8 100644
--- a/Source/cmExportTryCompileFileGenerator.cxx
+++ b/Source/cmExportTryCompileFileGenerator.cxx
@@ -11,9 +11,9 @@
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
 
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <utility>
 
 cmExportTryCompileFileGenerator::cmExportTryCompileFileGenerator(
@@ -65,7 +65,7 @@ std::string cmExportTryCompileFileGenerator::FindTargets(
   cmGeneratorExpressionDAGChecker dagChecker(tgt->GetName(), propName, nullptr,
                                              nullptr);
 
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
 
   cmTarget dummyHead("try_compile_dummy_exe", cmStateEnums::EXECUTABLE,
                      cmTarget::VisibilityNormal, tgt->Target->GetMakefile());
diff --git a/Source/cmFileCommand.cxx b/Source/cmFileCommand.cxx
index 98c5733..f06ef43 100644
--- a/Source/cmFileCommand.cxx
+++ b/Source/cmFileCommand.cxx
@@ -10,6 +10,7 @@
 #include "cmsys/String.hxx"
 #include <algorithm>
 #include <assert.h>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -30,7 +31,6 @@
 #include "cmPolicies.h"
 #include "cmSystemTools.h"
 #include "cmTimestamp.h"
-#include "cm_auto_ptr.hxx"
 #include "cm_sys_stat.h"
 #include "cmake.h"
 
@@ -368,8 +368,8 @@ bool cmFileCommand::HandleHashCommand(std::vector<std::string> const& args)
     return false;
   }
 
-  CM_AUTO_PTR<cmCryptoHash> hash(cmCryptoHash::New(args[0].c_str()));
-  if (hash.get()) {
+  std::unique_ptr<cmCryptoHash> hash(cmCryptoHash::New(args[0].c_str()));
+  if (hash) {
     std::string out = hash->HashFile(args[1]);
     if (!out.empty()) {
       this->Makefile->AddDefinition(args[2], out.c_str());
@@ -2629,7 +2629,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
   const char* cainfo = this->Makefile->GetDefinition("CMAKE_TLS_CAINFO");
   std::string expectedHash;
   std::string hashMatchMSG;
-  CM_AUTO_PTR<cmCryptoHash> hash;
+  std::unique_ptr<cmCryptoHash> hash;
   bool showProgress = false;
   std::string userpwd;
 
@@ -2688,8 +2688,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
         this->SetError("DOWNLOAD missing sum value for EXPECTED_MD5.");
         return false;
       }
-      hash =
-        CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(cmCryptoHash::AlgoMD5));
+      hash = cm::make_unique<cmCryptoHash>(cmCryptoHash::AlgoMD5);
       hashMatchMSG = "MD5 sum";
       expectedHash = cmSystemTools::LowerCase(*i);
     } else if (*i == "SHOW_PROGRESS") {
@@ -2710,7 +2709,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
       }
       std::string algo = i->substr(0, pos);
       expectedHash = cmSystemTools::LowerCase(i->substr(pos + 1));
-      hash = CM_AUTO_PTR<cmCryptoHash>(cmCryptoHash::New(algo.c_str()));
+      hash = std::unique_ptr<cmCryptoHash>(cmCryptoHash::New(algo.c_str()));
       if (!hash.get()) {
         std::string err = "DOWNLOAD EXPECTED_HASH given unknown ALGO: ";
         err += algo;
@@ -2906,7 +2905,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
 
   // Verify MD5 sum if requested:
   //
-  if (hash.get()) {
+  if (hash) {
     std::string actualHash = hash->HashFile(file);
     if (actualHash.empty()) {
       this->SetError("DOWNLOAD cannot compute hash on downloaded file");
@@ -3195,15 +3194,15 @@ void cmFileCommand::AddEvaluationFile(const std::string& inputName,
   cmListFileBacktrace lfbt = this->Makefile->GetBacktrace();
 
   cmGeneratorExpression outputGe(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> outputCge =
+  std::unique_ptr<cmCompiledGeneratorExpression> outputCge =
     outputGe.Parse(outputExpr);
 
   cmGeneratorExpression conditionGe(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> conditionCge =
+  std::unique_ptr<cmCompiledGeneratorExpression> conditionCge =
     conditionGe.Parse(condition);
 
-  this->Makefile->AddEvaluationFile(inputName, outputCge, conditionCge,
-                                    inputIsContent);
+  this->Makefile->AddEvaluationFile(inputName, std::move(outputCge),
+                                    std::move(conditionCge), inputIsContent);
 }
 
 bool cmFileCommand::HandleGenerateCommand(std::vector<std::string> const& args)
diff --git a/Source/cmFindPackageCommand.cxx b/Source/cmFindPackageCommand.cxx
index cd55e89..5a72655 100644
--- a/Source/cmFindPackageCommand.cxx
+++ b/Source/cmFindPackageCommand.cxx
@@ -13,6 +13,7 @@
 #include <deque>
 #include <functional>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <string.h>
@@ -24,7 +25,6 @@
 #include "cmState.h"
 #include "cmStateTypes.h"
 #include "cmVersion.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #if defined(__HAIKU__)
@@ -1611,10 +1611,10 @@ protected:
 private:
   bool Search(cmFileList&);
   virtual bool Search(std::string const& parent, cmFileList&) = 0;
-  virtual CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const = 0;
+  virtual std::unique_ptr<cmFileListGeneratorBase> Clone() const = 0;
   friend class cmFileList;
   cmFileListGeneratorBase* SetNext(cmFileListGeneratorBase const& next);
-  CM_AUTO_PTR<cmFileListGeneratorBase> Next;
+  std::unique_ptr<cmFileListGeneratorBase> Next;
 };
 
 class cmFileList
@@ -1638,7 +1638,7 @@ public:
   }
   bool Search()
   {
-    if (this->First.get()) {
+    if (this->First) {
       return this->First->Search(*this);
     }
     return false;
@@ -1647,7 +1647,7 @@ public:
 private:
   virtual bool Visit(std::string const& fullPath) = 0;
   friend class cmFileListGeneratorBase;
-  CM_AUTO_PTR<cmFileListGeneratorBase> First;
+  std::unique_ptr<cmFileListGeneratorBase> First;
   cmFileListGeneratorBase* Last;
 };
 
@@ -1688,7 +1688,7 @@ cmFileListGeneratorBase* cmFileListGeneratorBase::SetNext(
 bool cmFileListGeneratorBase::Consider(std::string const& fullPath,
                                        cmFileList& listing)
 {
-  if (this->Next.get()) {
+  if (this->Next) {
     return this->Next->Search(fullPath + "/", listing);
   }
   return listing.Visit(fullPath + "/");
@@ -1715,9 +1715,9 @@ private:
     std::string fullPath = parent + this->String;
     return this->Consider(fullPath, lister);
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const override
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorFixed(*this));
     return g;
   }
@@ -1748,9 +1748,9 @@ private:
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const override
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorEnumerate(*this));
     return g;
   }
@@ -1820,9 +1820,9 @@ private:
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const override
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorProject(*this));
     return g;
   }
@@ -1874,9 +1874,9 @@ private:
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const override
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorMacProject(*this));
     return g;
   }
@@ -1918,9 +1918,9 @@ private:
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const override
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorCaseInsensitive(*this));
     return g;
   }
@@ -1963,10 +1963,9 @@ private:
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const override
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(new cmFileListGeneratorGlob(*this));
-    return g;
+    return cm::make_unique<cmFileListGeneratorGlob>(*this);
   }
 };
 
diff --git a/Source/cmForEachCommand.cxx b/Source/cmForEachCommand.cxx
index 37387b0..542a860 100644
--- a/Source/cmForEachCommand.cxx
+++ b/Source/cmForEachCommand.cxx
@@ -2,6 +2,7 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmForEachCommand.h"
 
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -9,7 +10,6 @@
 #include "cmExecutionStatus.h"
 #include "cmMakefile.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmForEachFunctionBlocker::cmForEachFunctionBlocker(cmMakefile* mf)
@@ -35,7 +35,8 @@ bool cmForEachFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
     // if this is the endofreach for this statement
     if (!this->Depth) {
       // Remove the function blocker for this scope or bail.
-      CM_AUTO_PTR<cmFunctionBlocker> fb(mf.RemoveFunctionBlocker(this, lff));
+      std::unique_ptr<cmFunctionBlocker> fb(
+        mf.RemoveFunctionBlocker(this, lff));
       if (!fb.get()) {
         return false;
       }
@@ -181,7 +182,7 @@ bool cmForEachCommand::InitialPass(std::vector<std::string> const& args,
 
 bool cmForEachCommand::HandleInMode(std::vector<std::string> const& args)
 {
-  CM_AUTO_PTR<cmForEachFunctionBlocker> f(
+  std::unique_ptr<cmForEachFunctionBlocker> f(
     new cmForEachFunctionBlocker(this->Makefile));
   f->Args.push_back(args[0]);
 
@@ -213,7 +214,7 @@ bool cmForEachCommand::HandleInMode(std::vector<std::string> const& args)
     }
   }
 
-  this->Makefile->AddFunctionBlocker(f.release()); // TODO: pass auto_ptr
+  this->Makefile->AddFunctionBlocker(f.release()); // TODO: pass unique_ptr
 
   return true;
 }
diff --git a/Source/cmGeneratorExpression.cxx b/Source/cmGeneratorExpression.cxx
index d4b501f..86991c1 100644
--- a/Source/cmGeneratorExpression.cxx
+++ b/Source/cmGeneratorExpression.cxx
@@ -3,6 +3,7 @@
 #include "cmGeneratorExpression.h"
 
 #include "cmsys/RegularExpression.hxx"
+#include <memory> // IWYU pragma: keep
 #include <utility>
 
 #include "assert.h"
@@ -12,7 +13,6 @@
 #include "cmGeneratorExpressionLexer.h"
 #include "cmGeneratorExpressionParser.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 
 cmGeneratorExpression::cmGeneratorExpression(
   const cmListFileBacktrace& backtrace)
@@ -20,14 +20,14 @@ cmGeneratorExpression::cmGeneratorExpression(
 {
 }
 
-CM_AUTO_PTR<cmCompiledGeneratorExpression> cmGeneratorExpression::Parse(
+std::unique_ptr<cmCompiledGeneratorExpression> cmGeneratorExpression::Parse(
   std::string const& input)
 {
-  return CM_AUTO_PTR<cmCompiledGeneratorExpression>(
+  return std::unique_ptr<cmCompiledGeneratorExpression>(
     new cmCompiledGeneratorExpression(this->Backtrace, input));
 }
 
-CM_AUTO_PTR<cmCompiledGeneratorExpression> cmGeneratorExpression::Parse(
+std::unique_ptr<cmCompiledGeneratorExpression> cmGeneratorExpression::Parse(
   const char* input)
 {
   return this->Parse(std::string(input ? input : ""));
diff --git a/Source/cmGeneratorExpression.h b/Source/cmGeneratorExpression.h
index d22a191..cface0d 100644
--- a/Source/cmGeneratorExpression.h
+++ b/Source/cmGeneratorExpression.h
@@ -7,8 +7,8 @@
 
 #include "cmListFileCache.h"
 
-#include "cm_auto_ptr.hxx"
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <string>
 #include <vector>
@@ -39,8 +39,9 @@ public:
     cmListFileBacktrace const& backtrace = cmListFileBacktrace());
   ~cmGeneratorExpression();
 
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> Parse(std::string const& input);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> Parse(const char* input);
+  std::unique_ptr<cmCompiledGeneratorExpression> Parse(
+    std::string const& input);
+  std::unique_ptr<cmCompiledGeneratorExpression> Parse(const char* input);
 
   enum PreprocessContext
   {
diff --git a/Source/cmGeneratorExpressionEvaluationFile.cxx b/Source/cmGeneratorExpressionEvaluationFile.cxx
index ace9609..87b6b34 100644
--- a/Source/cmGeneratorExpressionEvaluationFile.cxx
+++ b/Source/cmGeneratorExpressionEvaluationFile.cxx
@@ -3,6 +3,7 @@
 #include "cmGeneratorExpressionEvaluationFile.h"
 
 #include "cmsys/FStream.hxx"
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <utility>
 
@@ -13,17 +14,16 @@
 #include "cmMakefile.h"
 #include "cmSourceFile.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmGeneratorExpressionEvaluationFile::cmGeneratorExpressionEvaluationFile(
   const std::string& input,
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> outputFileExpr,
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> condition, bool inputIsContent,
-  cmPolicies::PolicyStatus policyStatusCMP0070)
+  std::unique_ptr<cmCompiledGeneratorExpression> outputFileExpr,
+  std::unique_ptr<cmCompiledGeneratorExpression> condition,
+  bool inputIsContent, cmPolicies::PolicyStatus policyStatusCMP0070)
   : Input(input)
-  , OutputFileExpr(outputFileExpr)
-  , Condition(condition)
+  , OutputFileExpr(std::move(outputFileExpr))
+  , Condition(std::move(condition))
   , InputIsContent(inputIsContent)
   , PolicyStatusCMP0070(policyStatusCMP0070)
 {
@@ -144,7 +144,7 @@ void cmGeneratorExpressionEvaluationFile::Generate(cmLocalGenerator* lg)
 
   cmListFileBacktrace lfbt = this->OutputFileExpr->GetBacktrace();
   cmGeneratorExpression contentGE(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> inputExpression =
+  std::unique_ptr<cmCompiledGeneratorExpression> inputExpression =
     contentGE.Parse(inputContent);
 
   std::map<std::string, std::string> outputFiles;
diff --git a/Source/cmGeneratorExpressionEvaluationFile.h b/Source/cmGeneratorExpressionEvaluationFile.h
index ecf919d..2a79069 100644
--- a/Source/cmGeneratorExpressionEvaluationFile.h
+++ b/Source/cmGeneratorExpressionEvaluationFile.h
@@ -6,12 +6,12 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <string>
 #include <vector>
 
 #include "cmGeneratorExpression.h"
 #include "cmPolicies.h"
-#include "cm_auto_ptr.hxx"
 #include "cm_sys_stat.h"
 
 class cmLocalGenerator;
@@ -21,9 +21,9 @@ class cmGeneratorExpressionEvaluationFile
 public:
   cmGeneratorExpressionEvaluationFile(
     const std::string& input,
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> outputFileExpr,
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> condition, bool inputIsContent,
-    cmPolicies::PolicyStatus policyStatusCMP0070);
+    std::unique_ptr<cmCompiledGeneratorExpression> outputFileExpr,
+    std::unique_ptr<cmCompiledGeneratorExpression> condition,
+    bool inputIsContent, cmPolicies::PolicyStatus policyStatusCMP0070);
 
   void Generate(cmLocalGenerator* lg);
 
@@ -47,8 +47,8 @@ private:
 
 private:
   const std::string Input;
-  const CM_AUTO_PTR<cmCompiledGeneratorExpression> OutputFileExpr;
-  const CM_AUTO_PTR<cmCompiledGeneratorExpression> Condition;
+  const std::unique_ptr<cmCompiledGeneratorExpression> OutputFileExpr;
+  const std::unique_ptr<cmCompiledGeneratorExpression> Condition;
   std::vector<std::string> Files;
   const bool InputIsContent;
   cmPolicies::PolicyStatus PolicyStatusCMP0070;
diff --git a/Source/cmGeneratorExpressionNode.cxx b/Source/cmGeneratorExpressionNode.cxx
index 8f32410..fea20ba 100644
--- a/Source/cmGeneratorExpressionNode.cxx
+++ b/Source/cmGeneratorExpressionNode.cxx
@@ -17,7 +17,6 @@
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #include "cmsys/RegularExpression.hxx"
@@ -26,6 +25,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <sstream>
 #include <stdlib.h>
@@ -39,7 +39,7 @@ std::string cmGeneratorExpressionNode::EvaluateDependentExpression(
   cmGeneratorExpressionDAGChecker* dagChecker)
 {
   cmGeneratorExpression ge(context->Backtrace);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
   cge->SetEvaluateForBuildsystem(context->EvaluateForBuildsystem);
   std::string result =
     cge->Evaluate(lg, context->Config, context->Quiet, headTarget,
diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index 28b43e7..ea41204e 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -7,6 +7,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <queue>
 #include <sstream>
 #include <stdio.h>
@@ -32,7 +33,6 @@
 #include "cmTarget.h"
 #include "cmTargetLinkLibraryType.h"
 #include "cmTargetPropertyComputer.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 class cmMessenger;
@@ -64,13 +64,13 @@ class cmGeneratorTarget::TargetPropertyEntry
   static cmLinkImplItem NoLinkImplItem;
 
 public:
-  TargetPropertyEntry(CM_AUTO_PTR<cmCompiledGeneratorExpression> cge,
+  TargetPropertyEntry(std::unique_ptr<cmCompiledGeneratorExpression> cge,
                       cmLinkImplItem const& item = NoLinkImplItem)
-    : ge(cge)
+    : ge(std::move(cge))
     , LinkImplItem(item)
   {
   }
-  const CM_AUTO_PTR<cmCompiledGeneratorExpression> ge;
+  const std::unique_ptr<cmCompiledGeneratorExpression> ge;
   cmLinkImplItem const& LinkImplItem;
 };
 cmLinkImplItem cmGeneratorTarget::TargetPropertyEntry::NoLinkImplItem;
@@ -84,9 +84,10 @@ void CreatePropertyGeneratorExpressions(
   for (std::vector<std::string>::const_iterator it = entries.begin();
        it != entries.end(); ++it, ++btIt) {
     cmGeneratorExpression ge(*btIt);
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(*it);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(*it);
     cge->SetEvaluateForBuildsystem(evaluateForBuildsystem);
-    items.push_back(new cmGeneratorTarget::TargetPropertyEntry(cge));
+    items.push_back(
+      new cmGeneratorTarget::TargetPropertyEntry(std::move(cge)));
   }
 }
 
@@ -309,7 +310,7 @@ std::string cmGeneratorTarget::GetOutputName(
 
     // Now evaluate genex and update the previously-prepared map entry.
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(outName);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(outName);
     i->second = cge->Evaluate(this->LocalGenerator, config);
   } else if (i->second.empty()) {
     // An empty map entry indicates we have been called recursively
@@ -333,9 +334,9 @@ void cmGeneratorTarget::AddSourceCommon(const std::string& src)
 {
   cmListFileBacktrace lfbt = this->Makefile->GetBacktrace();
   cmGeneratorExpression ge(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(src);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(src);
   cge->SetEvaluateForBuildsystem(true);
-  this->SourceEntries.push_back(new TargetPropertyEntry(cge));
+  this->SourceEntries.push_back(new TargetPropertyEntry(std::move(cge)));
   this->ClearSourcesCache();
 }
 
@@ -359,13 +360,14 @@ void cmGeneratorTarget::AddIncludeDirectory(const std::string& src,
   this->Target->InsertInclude(src, this->Makefile->GetBacktrace(), before);
   cmListFileBacktrace lfbt = this->Makefile->GetBacktrace();
   cmGeneratorExpression ge(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(src);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(src);
   cge->SetEvaluateForBuildsystem(true);
   // Insert before begin/end
   std::vector<TargetPropertyEntry*>::iterator pos = before
     ? this->IncludeDirectoriesEntries.begin()
     : this->IncludeDirectoriesEntries.end();
-  this->IncludeDirectoriesEntries.insert(pos, new TargetPropertyEntry(cge));
+  this->IncludeDirectoriesEntries.insert(
+    pos, new TargetPropertyEntry(std::move(cge)));
 }
 
 std::vector<cmSourceFile*> const* cmGeneratorTarget::GetSourceDepends(
@@ -795,10 +797,10 @@ static void AddInterfaceEntries(
       if (lib.Target) {
         std::string genex = "$<TARGET_PROPERTY:" + lib + "," + prop + ">";
         cmGeneratorExpression ge(lib.Backtrace);
-        CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(genex);
+        std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(genex);
         cge->SetEvaluateForBuildsystem(true);
         entries.push_back(
-          new cmGeneratorTarget::TargetPropertyEntry(cge, lib));
+          new cmGeneratorTarget::TargetPropertyEntry(std::move(cge), lib));
       }
     }
   }
@@ -2285,7 +2287,7 @@ void cmTargetTraceDependencies::CheckCustomCommand(cmCustomCommand const& cc)
 
     // Check for target references in generator expressions.
     for (std::string const& cl : cCmdLine) {
-      const CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(cl);
+      const std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(cl);
       cge->Evaluate(this->GeneratorTarget->GetLocalGenerator(), "", true);
       std::set<cmGeneratorTarget*> geTargets = cge->GetTargets();
       targets.insert(geTargets.begin(), geTargets.end());
@@ -2570,10 +2572,10 @@ std::vector<std::string> cmGeneratorTarget::GetIncludeDirectories(
       libDir = frameworkCheck.match(1);
 
       cmGeneratorExpression ge;
-      CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+      std::unique_ptr<cmCompiledGeneratorExpression> cge =
         ge.Parse(libDir.c_str());
       linkInterfaceIncludeDirectoriesEntries.push_back(
-        new cmGeneratorTarget::TargetPropertyEntry(cge));
+        new cmGeneratorTarget::TargetPropertyEntry(std::move(cge)));
     }
   }
 
@@ -2781,10 +2783,10 @@ void cmGeneratorTarget::GetCompileDefinitions(
         }
         case cmPolicies::OLD: {
           cmGeneratorExpression ge;
-          CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+          std::unique_ptr<cmCompiledGeneratorExpression> cge =
             ge.Parse(configProp);
           linkInterfaceCompileDefinitionsEntries.push_back(
-            new cmGeneratorTarget::TargetPropertyEntry(cge));
+            new cmGeneratorTarget::TargetPropertyEntry(std::move(cge)));
         } break;
         case cmPolicies::NEW:
         case cmPolicies::REQUIRED_ALWAYS:
@@ -4214,7 +4216,7 @@ void cmGeneratorTarget::ExpandLinkItems(
     dagChecker.SetTransitivePropertiesOnly();
   }
   std::vector<std::string> libs;
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(value);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(value);
   cmSystemTools::ExpandListArgument(cge->Evaluate(this->LocalGenerator, config,
                                                   false, headTarget, this,
                                                   &dagChecker),
@@ -4484,7 +4486,8 @@ bool cmGeneratorTarget::ComputeOutputDir(const std::string& config,
   if (const char* config_outdir = this->GetProperty(configProp)) {
     // Use the user-specified per-configuration output directory.
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(config_outdir);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
+      ge.Parse(config_outdir);
     out = cge->Evaluate(this->LocalGenerator, config);
 
     // Skip per-configuration subdirectory.
@@ -4492,7 +4495,7 @@ bool cmGeneratorTarget::ComputeOutputDir(const std::string& config,
   } else if (const char* outdir = this->GetProperty(propertyName)) {
     // Use the user-specified output directory.
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(outdir);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(outdir);
     out = cge->Evaluate(this->LocalGenerator, config);
 
     // Skip per-configuration subdirectory if the value contained a
@@ -5222,7 +5225,7 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries(
     cmGeneratorExpressionDAGChecker dagChecker(
       this->GetName(), "LINK_LIBRARIES", nullptr, nullptr);
     cmGeneratorExpression ge(*btIt);
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> const cge = ge.Parse(*le);
+    std::unique_ptr<cmCompiledGeneratorExpression> const cge = ge.Parse(*le);
     std::string const evaluated =
       cge->Evaluate(this->LocalGenerator, config, false, head, &dagChecker);
     cmSystemTools::ExpandListArgument(evaluated, llibs);
diff --git a/Source/cmGhsMultiTargetGenerator.cxx b/Source/cmGhsMultiTargetGenerator.cxx
index 4f799ba..a31e415 100644
--- a/Source/cmGhsMultiTargetGenerator.cxx
+++ b/Source/cmGhsMultiTargetGenerator.cxx
@@ -363,7 +363,7 @@ void cmGhsMultiTargetGenerator::WriteTargetLinkLibraries(
       this->GeneratorTarget->GetCreateRuleVariable(language, config);
     bool useWatcomQuote =
       this->Makefile->IsOn(createRule + "_USE_WATCOM_QUOTE");
-    CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+    std::unique_ptr<cmLinkLineComputer> linkLineComputer(
       this->GetGlobalGenerator()->CreateLinkLineComputer(
         this->LocalGenerator,
         this->LocalGenerator->GetStateSnapshot().GetDirectory()));
diff --git a/Source/cmGlobalNinjaGenerator.cxx b/Source/cmGlobalNinjaGenerator.cxx
index 3e9e995..d5531cb 100644
--- a/Source/cmGlobalNinjaGenerator.cxx
+++ b/Source/cmGlobalNinjaGenerator.cxx
@@ -10,6 +10,7 @@
 #include <ctype.h>
 #include <functional>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 
@@ -32,7 +33,6 @@
 #include "cmTarget.h"
 #include "cmTargetDepend.h"
 #include "cmVersion.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 class cmLinkLineComputer;
@@ -1692,9 +1692,10 @@ bool cmGlobalNinjaGenerator::WriteDyndepFile(
     snapshot.GetDirectory().SetCurrentBinary(dir_cur_bld);
     snapshot.GetDirectory().SetRelativePathTopSource(dir_top_src.c_str());
     snapshot.GetDirectory().SetRelativePathTopBinary(dir_top_bld.c_str());
-    CM_AUTO_PTR<cmMakefile> mfd(new cmMakefile(this, snapshot));
-    CM_AUTO_PTR<cmLocalNinjaGenerator> lgd(static_cast<cmLocalNinjaGenerator*>(
-      this->CreateLocalGenerator(mfd.get())));
+    auto mfd = cm::make_unique<cmMakefile>(this, snapshot);
+    std::unique_ptr<cmLocalNinjaGenerator> lgd(
+      static_cast<cmLocalNinjaGenerator*>(
+        this->CreateLocalGenerator(mfd.get())));
     this->Makefiles.push_back(mfd.release());
     this->LocalGenerators.push_back(lgd.release());
   }
@@ -1869,7 +1870,7 @@ int cmcmd_cmake_ninja_dyndep(std::vector<std::string>::const_iterator argBeg,
   cmake cm(cmake::RoleInternal);
   cm.SetHomeDirectory(dir_top_src);
   cm.SetHomeOutputDirectory(dir_top_bld);
-  CM_AUTO_PTR<cmGlobalNinjaGenerator> ggd(
+  std::unique_ptr<cmGlobalNinjaGenerator> ggd(
     static_cast<cmGlobalNinjaGenerator*>(cm.CreateGlobalGenerator("Ninja")));
   if (!ggd.get() ||
       !ggd->WriteDyndepFile(dir_top_src, dir_top_bld, dir_cur_src, dir_cur_bld,
diff --git a/Source/cmGlobalVisualStudio7Generator.cxx b/Source/cmGlobalVisualStudio7Generator.cxx
index 8c1111e..a14b5f7 100644
--- a/Source/cmGlobalVisualStudio7Generator.cxx
+++ b/Source/cmGlobalVisualStudio7Generator.cxx
@@ -708,7 +708,7 @@ std::set<std::string> cmGlobalVisualStudio7Generator::IsPartOfDefaultBuild(
           const char* propertyValue =
             target->Target->GetMakefile()->GetDefinition(propertyName);
           cmGeneratorExpression ge;
-          CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+          std::unique_ptr<cmCompiledGeneratorExpression> cge =
             ge.Parse(propertyValue);
           if (cmSystemTools::IsOn(
                 cge->Evaluate(target->GetLocalGenerator(), *i))) {
diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index 2a05d4e..9375f60 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -5,10 +5,12 @@
 #include "cmsys/RegularExpression.hxx"
 #include <assert.h>
 #include <iomanip>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <string.h>
 
+#include "cmAlgorithms.h"
 #include "cmComputeLinkInformation.h"
 #include "cmCustomCommandGenerator.h"
 #include "cmDocumentationEntry.h"
@@ -29,7 +31,6 @@
 #include "cmXCode21Object.h"
 #include "cmXCodeObject.h"
 #include "cmXCodeScheme.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 struct cmLinkImplementation;
@@ -197,8 +198,8 @@ cmGlobalGenerator* cmGlobalXCodeGenerator::Factory::CreateGlobalGenerator(
     return nullptr;
   }
 
-  CM_AUTO_PTR<cmGlobalXCodeGenerator> gg(
-    new cmGlobalXCodeGenerator(cm, version_string, version_number));
+  auto gg = cm::make_unique<cmGlobalXCodeGenerator>(cm, version_string,
+                                                    version_number);
   return gg.release();
 #else
   std::cerr << "CMake should be built with cmake to use Xcode, "
@@ -669,7 +670,8 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateXCodeSourceFile(
   if (const char* cflags = sf->GetProperty("COMPILE_FLAGS")) {
     cmGeneratorExpression ge;
     std::string configName = "NO-PER-CONFIG-SUPPORT-IN-XCODE";
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> compiledExpr = ge.Parse(cflags);
+    std::unique_ptr<cmCompiledGeneratorExpression> compiledExpr =
+      ge.Parse(cflags);
     const char* processed = compiledExpr->Evaluate(lg, configName);
     if (compiledExpr->GetHadContextSensitiveCondition()) {
       std::ostringstream e;
diff --git a/Source/cmGraphVizWriter.cxx b/Source/cmGraphVizWriter.cxx
index ca87cbf..dd2993d 100644
--- a/Source/cmGraphVizWriter.cxx
+++ b/Source/cmGraphVizWriter.cxx
@@ -4,6 +4,7 @@
 
 #include <cstddef>
 #include <iostream>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <utility>
 
@@ -15,7 +16,6 @@
 #include "cmStateSnapshot.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 namespace {
@@ -147,8 +147,8 @@ void cmGraphVizWriter::ReadSettings(const char* settingsFileName,
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator ggi(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&ggi, cm.GetCurrentSnapshot()));
-  CM_AUTO_PTR<cmLocalGenerator> lg(ggi.CreateLocalGenerator(mf.get()));
+  cmMakefile mf(&ggi, cm.GetCurrentSnapshot());
+  std::unique_ptr<cmLocalGenerator> lg(ggi.CreateLocalGenerator(&mf));
 
   const char* inFileName = settingsFileName;
 
@@ -159,7 +159,7 @@ void cmGraphVizWriter::ReadSettings(const char* settingsFileName,
     }
   }
 
-  if (!mf->ReadListFile(inFileName)) {
+  if (!mf.ReadListFile(inFileName)) {
     cmSystemTools::Error("Problem opening GraphViz options file: ",
                          inFileName);
     return;
@@ -169,7 +169,7 @@ void cmGraphVizWriter::ReadSettings(const char* settingsFileName,
 
 #define __set_if_set(var, cmakeDefinition)                                    \
   {                                                                           \
-    const char* value = mf->GetDefinition(cmakeDefinition);                   \
+    const char* value = mf.GetDefinition(cmakeDefinition);                    \
     if (value) {                                                              \
       (var) = value;                                                          \
     }                                                                         \
@@ -182,9 +182,9 @@ void cmGraphVizWriter::ReadSettings(const char* settingsFileName,
 
 #define __set_bool_if_set(var, cmakeDefinition)                               \
   {                                                                           \
-    const char* value = mf->GetDefinition(cmakeDefinition);                   \
+    const char* value = mf.GetDefinition(cmakeDefinition);                    \
     if (value) {                                                              \
-      (var) = mf->IsOn(cmakeDefinition);                                      \
+      (var) = mf.IsOn(cmakeDefinition);                                       \
     }                                                                         \
   }
 
diff --git a/Source/cmIfCommand.cxx b/Source/cmIfCommand.cxx
index 1a01854..4926f22 100644
--- a/Source/cmIfCommand.cxx
+++ b/Source/cmIfCommand.cxx
@@ -8,9 +8,10 @@
 #include "cmMakefile.h"
 #include "cmOutputConverter.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
+#include <memory> // IWYU pragma: keep
+
 static std::string cmIfCommandError(
   std::vector<cmExpandedCommandArgument> const& args)
 {
@@ -36,7 +37,8 @@ bool cmIfFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
     // if this is the endif for this if statement, then start executing
     if (!this->ScopeDepth) {
       // Remove the function blocker for this scope or bail.
-      CM_AUTO_PTR<cmFunctionBlocker> fb(mf.RemoveFunctionBlocker(this, lff));
+      std::unique_ptr<cmFunctionBlocker> fb(
+        mf.RemoveFunctionBlocker(this, lff));
       if (!fb.get()) {
         return false;
       }
diff --git a/Source/cmInstallDirectoryGenerator.cxx b/Source/cmInstallDirectoryGenerator.cxx
index 49e57b1..e4209bd 100644
--- a/Source/cmInstallDirectoryGenerator.cxx
+++ b/Source/cmInstallDirectoryGenerator.cxx
@@ -7,7 +7,8 @@
 #include "cmLocalGenerator.h"
 #include "cmMakefile.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
+
+#include <memory> // IWYU pragma: keep
 
 cmInstallDirectoryGenerator::cmInstallDirectoryGenerator(
   std::vector<std::string> const& dirs, const char* dest,
@@ -63,7 +64,7 @@ void cmInstallDirectoryGenerator::GenerateScriptForConfig(
   std::vector<std::string> dirs;
   cmGeneratorExpression ge;
   for (std::string const& d : this->Directories) {
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(d);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(d);
     cmSystemTools::ExpandListArgument(
       cge->Evaluate(this->LocalGenerator, config), dirs);
   }
diff --git a/Source/cmInstallFilesGenerator.cxx b/Source/cmInstallFilesGenerator.cxx
index 0e79563..68e3f86 100644
--- a/Source/cmInstallFilesGenerator.cxx
+++ b/Source/cmInstallFilesGenerator.cxx
@@ -5,7 +5,8 @@
 #include "cmGeneratorExpression.h"
 #include "cmInstallType.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
+
+#include <memory> // IWYU pragma: keep
 
 class cmLocalGenerator;
 
@@ -82,7 +83,7 @@ void cmInstallFilesGenerator::GenerateScriptForConfig(
   std::vector<std::string> files;
   cmGeneratorExpression ge;
   for (std::string const& f : this->Files) {
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(f);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(f);
     cmSystemTools::ExpandListArgument(
       cge->Evaluate(this->LocalGenerator, config), files);
   }
diff --git a/Source/cmInstalledFile.h b/Source/cmInstalledFile.h
index fbf754f..47a4959 100644
--- a/Source/cmInstalledFile.h
+++ b/Source/cmInstalledFile.h
@@ -6,9 +6,9 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmGeneratorExpression.h"
-#include "cm_auto_ptr.hxx"
 
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <string>
 #include <vector>
 
@@ -22,7 +22,7 @@ class cmMakefile;
 class cmInstalledFile
 {
 public:
-  typedef CM_AUTO_PTR<cmCompiledGeneratorExpression>
+  typedef std::unique_ptr<cmCompiledGeneratorExpression>
     CompiledGeneratorExpressionPtrType;
 
   typedef std::vector<cmCompiledGeneratorExpression*> ExpressionVectorType;
diff --git a/Source/cmLocalNinjaGenerator.cxx b/Source/cmLocalNinjaGenerator.cxx
index 73f5a16..477ce51 100644
--- a/Source/cmLocalNinjaGenerator.cxx
+++ b/Source/cmLocalNinjaGenerator.cxx
@@ -5,6 +5,7 @@
 #include <algorithm>
 #include <assert.h>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <utility>
@@ -22,7 +23,6 @@
 #include "cmState.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmLocalNinjaGenerator::cmLocalNinjaGenerator(cmGlobalGenerator* gg,
@@ -505,7 +505,7 @@ std::string cmLocalNinjaGenerator::MakeCustomLauncher(
   std::string launcher = property_value;
   launcher += " ";
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->CreateRulePlaceholderExpander());
 
   rulePlaceholderExpander->ExpandRuleVariables(this, launcher, vars);
diff --git a/Source/cmLocalUnixMakefileGenerator3.cxx b/Source/cmLocalUnixMakefileGenerator3.cxx
index 50ed0ed..e26182a 100644
--- a/Source/cmLocalUnixMakefileGenerator3.cxx
+++ b/Source/cmLocalUnixMakefileGenerator3.cxx
@@ -5,6 +5,7 @@
 #include "cmsys/FStream.hxx"
 #include "cmsys/Terminal.h"
 #include <algorithm>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <utility>
@@ -28,7 +29,6 @@
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
 #include "cmVersion.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 // Include dependency scanners for supported languages.  Only the
@@ -121,9 +121,9 @@ void cmLocalUnixMakefileGenerator3::Generate()
     if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
-    CM_AUTO_PTR<cmMakefileTargetGenerator> tg(
+    std::unique_ptr<cmMakefileTargetGenerator> tg(
       cmMakefileTargetGenerator::New(target));
-    if (tg.get()) {
+    if (tg) {
       tg->WriteRuleFiles();
       gg->RecordTargetProgress(tg.get());
     }
@@ -930,7 +930,7 @@ void cmLocalUnixMakefileGenerator3::AppendCustomCommand(
     *content << dir;
   }
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->CreateRulePlaceholderExpander());
 
   // Add each command line to the set of commands.
diff --git a/Source/cmLocalVisualStudio7Generator.cxx b/Source/cmLocalVisualStudio7Generator.cxx
index a1771ee..0a90020 100644
--- a/Source/cmLocalVisualStudio7Generator.cxx
+++ b/Source/cmLocalVisualStudio7Generator.cxx
@@ -1453,7 +1453,7 @@ cmLocalVisualStudio7GeneratorFCInfo::cmLocalVisualStudio7GeneratorFCInfo(
     }
     if (const char* cflags = sf.GetProperty("COMPILE_FLAGS")) {
       cmGeneratorExpression ge;
-      CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
+      std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
       fc.CompileFlags = cge->Evaluate(lg, *i);
       needfc = true;
     }
@@ -1849,7 +1849,7 @@ void cmLocalVisualStudio7Generator::OutputTargetRules(
   if (!addedPrelink) {
     event.Write(target->GetPreLinkCommands());
   }
-  CM_AUTO_PTR<cmCustomCommand> pcc(
+  std::unique_ptr<cmCustomCommand> pcc(
     this->MaybeCreateImplibDir(target, configName, this->FortranProject));
   if (pcc.get()) {
     event.Write(*pcc);
diff --git a/Source/cmLocalVisualStudioGenerator.cxx b/Source/cmLocalVisualStudioGenerator.cxx
index 718c8cd..bbb91e0 100644
--- a/Source/cmLocalVisualStudioGenerator.cxx
+++ b/Source/cmLocalVisualStudioGenerator.cxx
@@ -78,12 +78,12 @@ void cmLocalVisualStudioGenerator::ComputeObjectFilenames(
   }
 }
 
-CM_AUTO_PTR<cmCustomCommand>
+std::unique_ptr<cmCustomCommand>
 cmLocalVisualStudioGenerator::MaybeCreateImplibDir(cmGeneratorTarget* target,
                                                    const std::string& config,
                                                    bool isFortran)
 {
-  CM_AUTO_PTR<cmCustomCommand> pcc;
+  std::unique_ptr<cmCustomCommand> pcc;
 
   // If an executable exports symbols then VS wants to create an
   // import library but forgets to create the output directory.
diff --git a/Source/cmLocalVisualStudioGenerator.h b/Source/cmLocalVisualStudioGenerator.h
index c47db4f..cba24fe 100644
--- a/Source/cmLocalVisualStudioGenerator.h
+++ b/Source/cmLocalVisualStudioGenerator.h
@@ -6,12 +6,11 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
-#include <memory>
+#include <memory> // IWYU pragma: keep
 #include <string>
 
 #include "cmGlobalVisualStudioGenerator.h"
 #include "cmLocalGenerator.h"
-#include "cm_auto_ptr.hxx"
 
 class cmCustomCommand;
 class cmCustomCommandGenerator;
@@ -56,9 +55,8 @@ protected:
   virtual bool CustomCommandUseLocal() const { return false; }
 
   /** Construct a custom command to make exe import lib dir.  */
-  CM_AUTO_PTR<cmCustomCommand> MaybeCreateImplibDir(cmGeneratorTarget* target,
-                                                    const std::string& config,
-                                                    bool isFortran);
+  std::unique_ptr<cmCustomCommand> MaybeCreateImplibDir(
+    cmGeneratorTarget* target, const std::string& config, bool isFortran);
 };
 
 #endif
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index c96b892..9b98c47 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -7,6 +7,7 @@
 #include <algorithm>
 #include <assert.h>
 #include <ctype.h>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdlib.h>
 #include <string.h>
@@ -37,7 +38,6 @@
 #include "cmTestGenerator.h" // IWYU pragma: keep
 #include "cmVersion.h"
 #include "cmWorkingDirectory.h"
-#include "cm_auto_ptr.hxx"
 #include "cm_sys_stat.h"
 #include "cmake.h"
 
@@ -264,7 +264,7 @@ bool cmMakefile::ExecuteCommand(const cmListFileFunction& lff,
   // Lookup the command prototype.
   if (cmCommand* proto = this->GetState()->GetCommand(name)) {
     // Clone the prototype.
-    CM_AUTO_PTR<cmCommand> pcmd(proto->Clone());
+    std::unique_ptr<cmCommand> pcmd(proto->Clone());
     pcmd->SetMakefile(this);
 
     // Decide whether to invoke the command.
@@ -584,11 +584,12 @@ void cmMakefile::EnforceDirectoryLevelRules() const
 
 void cmMakefile::AddEvaluationFile(
   const std::string& inputFile,
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> outputName,
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> condition, bool inputIsContent)
+  std::unique_ptr<cmCompiledGeneratorExpression> outputName,
+  std::unique_ptr<cmCompiledGeneratorExpression> condition,
+  bool inputIsContent)
 {
   this->EvaluationFiles.push_back(new cmGeneratorExpressionEvaluationFile(
-    inputFile, outputName, condition, inputIsContent,
+    inputFile, std::move(outputName), std::move(condition), inputIsContent,
     this->GetPolicyStatus(cmPolicies::CMP0070)));
 }
 
@@ -2874,7 +2875,7 @@ void cmMakefile::PopFunctionBlockerBarrier(bool reportError)
   FunctionBlockersType::size_type barrier =
     this->FunctionBlockerBarriers.back();
   while (this->FunctionBlockers.size() > barrier) {
-    CM_AUTO_PTR<cmFunctionBlocker> fb(this->FunctionBlockers.back());
+    std::unique_ptr<cmFunctionBlocker> fb(this->FunctionBlockers.back());
     this->FunctionBlockers.pop_back();
     if (reportError) {
       // Report the context in which the unclosed block was opened.
@@ -3009,7 +3010,7 @@ void cmMakefile::AddFunctionBlocker(cmFunctionBlocker* fb)
   this->FunctionBlockers.push_back(fb);
 }
 
-CM_AUTO_PTR<cmFunctionBlocker> cmMakefile::RemoveFunctionBlocker(
+std::unique_ptr<cmFunctionBlocker> cmMakefile::RemoveFunctionBlocker(
   cmFunctionBlocker* fb, const cmListFileFunction& lff)
 {
   // Find the function blocker stack barrier for the current scope.
@@ -3042,11 +3043,11 @@ CM_AUTO_PTR<cmFunctionBlocker> cmMakefile::RemoveFunctionBlocker(
       }
       cmFunctionBlocker* b = *pos;
       this->FunctionBlockers.erase(pos);
-      return CM_AUTO_PTR<cmFunctionBlocker>(b);
+      return std::unique_ptr<cmFunctionBlocker>(b);
     }
   }
 
-  return CM_AUTO_PTR<cmFunctionBlocker>();
+  return std::unique_ptr<cmFunctionBlocker>();
 }
 
 const char* cmMakefile::GetHomeDirectory() const
@@ -3747,7 +3748,7 @@ cmTarget* cmMakefile::AddImportedTarget(const std::string& name,
                                         bool global)
 {
   // Create the target.
-  CM_AUTO_PTR<cmTarget> target(
+  std::unique_ptr<cmTarget> target(
     new cmTarget(name, type, global ? cmTarget::VisibilityImportedGlobally
                                     : cmTarget::VisibilityImported,
                  this));
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 2cae659..998fb25 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -8,6 +8,7 @@
 #include "cmsys/RegularExpression.hxx"
 #include <deque>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <stack>
 #include <stddef.h>
@@ -23,7 +24,6 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
@@ -93,7 +93,7 @@ public:
    * Remove the function blocker whose scope ends with the given command.
    * This returns ownership of the function blocker object.
    */
-  CM_AUTO_PTR<cmFunctionBlocker> RemoveFunctionBlocker(
+  std::unique_ptr<cmFunctionBlocker> RemoveFunctionBlocker(
     cmFunctionBlocker* fb, const cmListFileFunction& lff);
 
   /**
@@ -782,10 +782,11 @@ public:
 
   void EnforceDirectoryLevelRules() const;
 
-  void AddEvaluationFile(const std::string& inputFile,
-                         CM_AUTO_PTR<cmCompiledGeneratorExpression> outputName,
-                         CM_AUTO_PTR<cmCompiledGeneratorExpression> condition,
-                         bool inputIsContent);
+  void AddEvaluationFile(
+    const std::string& inputFile,
+    std::unique_ptr<cmCompiledGeneratorExpression> outputName,
+    std::unique_ptr<cmCompiledGeneratorExpression> condition,
+    bool inputIsContent);
   std::vector<cmGeneratorExpressionEvaluationFile*> GetEvaluationFiles() const;
 
   std::vector<cmExportBuildFileGenerator*> GetExportBuildFileGenerators()
diff --git a/Source/cmMakefileExecutableTargetGenerator.cxx b/Source/cmMakefileExecutableTargetGenerator.cxx
index ebc8e30..801f72a 100644
--- a/Source/cmMakefileExecutableTargetGenerator.cxx
+++ b/Source/cmMakefileExecutableTargetGenerator.cxx
@@ -3,6 +3,7 @@
 #include "cmMakefileExecutableTargetGenerator.h"
 
 #include <algorithm>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <string>
 #include <vector>
@@ -23,7 +24,6 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmMakefileExecutableTargetGenerator::cmMakefileExecutableTargetGenerator(
@@ -193,7 +193,7 @@ void cmMakefileExecutableTargetGenerator::WriteDeviceExecutableRule(
     // Set path conversion for link script shells.
     this->LocalGenerator->SetLinkScriptShell(useLinkScript);
 
-    CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+    std::unique_ptr<cmLinkLineComputer> linkLineComputer(
       new cmLinkLineDeviceComputer(
         this->LocalGenerator,
         this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -251,7 +251,7 @@ void cmMakefileExecutableTargetGenerator::WriteDeviceExecutableRule(
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->LocalGenerator->CreateRulePlaceholderExpander());
 
     // Expand placeholders in the commands.
@@ -448,7 +448,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
     linkFlags, this->GeneratorTarget->GetProperty(linkFlagsConfig));
 
   {
-    CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+    std::unique_ptr<cmLinkLineComputer> linkLineComputer(
       this->CreateLinkLineComputer(
         this->LocalGenerator,
         this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -538,7 +538,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
     // Set path conversion for link script shells.
     this->LocalGenerator->SetLinkScriptShell(useLinkScript);
 
-    CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+    std::unique_ptr<cmLinkLineComputer> linkLineComputer(
       this->CreateLinkLineComputer(
         this->LocalGenerator,
         this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -632,7 +632,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->LocalGenerator->CreateRulePlaceholderExpander());
 
     // Expand placeholders in the commands.
diff --git a/Source/cmMakefileLibraryTargetGenerator.cxx b/Source/cmMakefileLibraryTargetGenerator.cxx
index 68d73d4..80c62d1 100644
--- a/Source/cmMakefileLibraryTargetGenerator.cxx
+++ b/Source/cmMakefileLibraryTargetGenerator.cxx
@@ -3,6 +3,7 @@
 #include "cmMakefileLibraryTargetGenerator.h"
 
 #include <algorithm>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <vector>
 
@@ -22,7 +23,6 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmMakefileLibraryTargetGenerator::cmMakefileLibraryTargetGenerator(
@@ -199,7 +199,7 @@ void cmMakefileLibraryTargetGenerator::WriteSharedLibraryRules(bool relink)
   this->LocalGenerator->AddConfigVariableFlags(
     extraFlags, "CMAKE_SHARED_LINKER_FLAGS", this->ConfigName);
 
-  CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+  std::unique_ptr<cmLinkLineComputer> linkLineComputer(
     this->CreateLinkLineComputer(
       this->LocalGenerator,
       this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -248,7 +248,7 @@ void cmMakefileLibraryTargetGenerator::WriteModuleLibraryRules(bool relink)
   this->LocalGenerator->AddConfigVariableFlags(
     extraFlags, "CMAKE_MODULE_LINKER_FLAGS", this->ConfigName);
 
-  CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+  std::unique_ptr<cmLinkLineComputer> linkLineComputer(
     this->CreateLinkLineComputer(
       this->LocalGenerator,
       this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -348,7 +348,7 @@ void cmMakefileLibraryTargetGenerator::WriteDeviceLibraryRules(
     std::string linkLibs;
     if (this->GeneratorTarget->GetType() != cmStateEnums::STATIC_LIBRARY) {
 
-      CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+      std::unique_ptr<cmLinkLineComputer> linkLineComputer(
         new cmLinkLineDeviceComputer(
           this->LocalGenerator,
           this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -410,7 +410,7 @@ void cmMakefileLibraryTargetGenerator::WriteDeviceLibraryRules(
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->LocalGenerator->CreateRulePlaceholderExpander());
 
     // Construct the main link rule and expand placeholders.
@@ -754,7 +754,7 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
     std::string linkLibs;
     if (this->GeneratorTarget->GetType() != cmStateEnums::STATIC_LIBRARY) {
 
-      CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+      std::unique_ptr<cmLinkLineComputer> linkLineComputer(
         this->CreateLinkLineComputer(
           this->LocalGenerator,
           this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -873,7 +873,7 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->LocalGenerator->CreateRulePlaceholderExpander());
     // Construct the main link rule and expand placeholders.
     rulePlaceholderExpander->SetTargetImpLib(targetOutPathImport);
diff --git a/Source/cmMakefileTargetGenerator.cxx b/Source/cmMakefileTargetGenerator.cxx
index d0aad30..7db010c 100644
--- a/Source/cmMakefileTargetGenerator.cxx
+++ b/Source/cmMakefileTargetGenerator.cxx
@@ -2,6 +2,7 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmMakefileTargetGenerator.h"
 
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <utility>
@@ -27,7 +28,6 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmMakefileTargetGenerator::cmMakefileTargetGenerator(cmGeneratorTarget* target)
@@ -134,7 +134,7 @@ void cmMakefileTargetGenerator::WriteTargetBuildRules()
   if (const char* additional_clean_files =
         this->Makefile->GetProperty("ADDITIONAL_MAKE_CLEAN_FILES")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
       ge.Parse(additional_clean_files);
 
     cmSystemTools::ExpandListArgument(
@@ -434,7 +434,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
   // Add flags from source file properties.
   if (const char* cflags = source.GetProperty("COMPILE_FLAGS")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
     const char* evaluatedFlags = cge->Evaluate(this->LocalGenerator, config,
                                                false, this->GeneratorTarget);
     this->LocalGenerator->AppendFlags(flags, evaluatedFlags);
@@ -570,7 +570,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
   bool const lang_has_assembly = lang_has_preprocessor;
   bool const lang_can_export_cmds = lang_has_preprocessor;
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->LocalGenerator->CreateRulePlaceholderExpander());
 
   // Construct the compile rules.
diff --git a/Source/cmNinjaNormalTargetGenerator.cxx b/Source/cmNinjaNormalTargetGenerator.cxx
index e0844e8..e0cc35a 100644
--- a/Source/cmNinjaNormalTargetGenerator.cxx
+++ b/Source/cmNinjaNormalTargetGenerator.cxx
@@ -6,6 +6,7 @@
 #include <assert.h>
 #include <iterator>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <sstream>
 
@@ -29,7 +30,6 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 class cmCustomCommand;
@@ -241,7 +241,7 @@ void cmNinjaNormalTargetGenerator::WriteDeviceLinkRule(bool useResponseFile)
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->GetLocalGenerator()->CreateRulePlaceholderExpander());
 
     // Rule for linking library/executable.
@@ -365,7 +365,7 @@ void cmNinjaNormalTargetGenerator::WriteLinkRule(bool useResponseFile)
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->GetLocalGenerator()->CreateRulePlaceholderExpander());
 
     // Rule for linking library/executable.
@@ -636,7 +636,7 @@ void cmNinjaNormalTargetGenerator::WriteDeviceLinkStatement()
   vars["TARGET_FILE"] =
     localGen.ConvertToOutputFormat(targetOutputReal, cmOutputConverter::SHELL);
 
-  CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+  std::unique_ptr<cmLinkLineComputer> linkLineComputer(
     new cmNinjaLinkLineDeviceComputer(
       this->GetLocalGenerator(),
       this->GetLocalGenerator()->GetStateSnapshot().GetDirectory(),
@@ -839,7 +839,7 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
   vars["TARGET_FILE"] =
     localGen.ConvertToOutputFormat(targetOutputReal, cmOutputConverter::SHELL);
 
-  CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+  std::unique_ptr<cmLinkLineComputer> linkLineComputer(
     this->GetGlobalGenerator()->CreateLinkLineComputer(
       this->GetLocalGenerator(),
       this->GetLocalGenerator()->GetStateSnapshot().GetDirectory()));
diff --git a/Source/cmNinjaTargetGenerator.cxx b/Source/cmNinjaTargetGenerator.cxx
index a464d6e..4dbc9b0 100644
--- a/Source/cmNinjaTargetGenerator.cxx
+++ b/Source/cmNinjaTargetGenerator.cxx
@@ -8,6 +8,7 @@
 #include <assert.h>
 #include <iterator>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <string.h>
 
@@ -29,7 +30,6 @@
 #include "cmState.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmNinjaTargetGenerator* cmNinjaTargetGenerator::New(cmGeneratorTarget* target)
@@ -138,7 +138,7 @@ std::string cmNinjaTargetGenerator::ComputeFlagsForObject(
   if (const char* cflags = source->GetProperty("COMPILE_FLAGS")) {
     std::string config = this->LocalGenerator->GetConfigName();
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
     const char* evaluatedFlags = cge->Evaluate(this->LocalGenerator, config,
                                                false, this->GeneratorTarget);
     this->LocalGenerator->AppendFlags(flags, evaluatedFlags);
@@ -463,7 +463,7 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
   vars.Flags = flags.c_str();
   vars.DependencyFile = depfile.c_str();
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->GetLocalGenerator()->CreateRulePlaceholderExpander());
 
   std::string const tdi = this->GetLocalGenerator()->ConvertToOutputFormat(
@@ -1077,7 +1077,7 @@ void cmNinjaTargetGenerator::ExportObjectCompileCommand(
     cmSystemTools::ExpandListArgument(compileCmd, compileCmds);
   }
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->GetLocalGenerator()->CreateRulePlaceholderExpander());
 
   for (std::string& i : compileCmds) {
diff --git a/Source/cmStringCommand.cxx b/Source/cmStringCommand.cxx
index 3b6a7ee..55af078 100644
--- a/Source/cmStringCommand.cxx
+++ b/Source/cmStringCommand.cxx
@@ -4,6 +4,7 @@
 
 #include "cmsys/RegularExpression.hxx"
 #include <ctype.h>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -15,7 +16,6 @@
 #include "cmSystemTools.h"
 #include "cmTimestamp.h"
 #include "cmUuid.h"
-#include "cm_auto_ptr.hxx"
 
 class cmExecutionStatus;
 
@@ -108,8 +108,8 @@ bool cmStringCommand::HandleHashCommand(std::vector<std::string> const& args)
     return false;
   }
 
-  CM_AUTO_PTR<cmCryptoHash> hash(cmCryptoHash::New(args[0].c_str()));
-  if (hash.get()) {
+  std::unique_ptr<cmCryptoHash> hash(cmCryptoHash::New(args[0].c_str()));
+  if (hash) {
     std::string out = hash->HashString(args[2]);
     this->Makefile->AddDefinition(args[1], out.c_str());
     return true;
diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index 8dce028..e163783 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -15,7 +15,7 @@
 #include "cmVisualStudioGeneratorOptions.h"
 #include "windows.h"
 
-#include "cm_auto_ptr.hxx"
+#include <memory> // IWYU pragma: keep
 
 static std::string cmVS10EscapeXML(std::string arg)
 {
@@ -1722,7 +1722,8 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
 
     if (!deployContent.empty()) {
       cmGeneratorExpression ge;
-      CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(deployContent);
+      std::unique_ptr<cmCompiledGeneratorExpression> cge =
+        ge.Parse(deployContent);
       // Deployment location cannot be set on a configuration basis
       if (!deployLocation.empty()) {
         this->WriteString("<Link>", 3);
@@ -2089,7 +2090,7 @@ bool cmVisualStudio10TargetGenerator::OutputSourceSpecificFlags(
       }
       if (configDependentFlags) {
         cmGeneratorExpression ge;
-        CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(flags);
+        std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(flags);
         std::string evaluatedFlags =
           cge->Evaluate(this->LocalGenerator, *config);
         clOptions.Parse(evaluatedFlags.c_str());
@@ -2297,16 +2298,16 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
 
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions;
+  std::unique_ptr<Options> pOptions;
   switch (this->ProjectType) {
     case vcxproj:
-      pOptions = CM_AUTO_PTR<Options>(new Options(
-        this->LocalGenerator, Options::Compiler, gg->GetClFlagTable()));
+      pOptions = cm::make_unique<Options>(
+        this->LocalGenerator, Options::Compiler, gg->GetClFlagTable());
       break;
     case csproj:
-      pOptions = CM_AUTO_PTR<Options>(new Options(this->LocalGenerator,
-                                                  Options::CSharpCompiler,
-                                                  gg->GetCSharpFlagTable()));
+      pOptions =
+        cm::make_unique<Options>(this->LocalGenerator, Options::CSharpCompiler,
+                                 gg->GetCSharpFlagTable());
       break;
   }
   Options& clOptions = *pOptions;
@@ -2520,8 +2521,8 @@ bool cmVisualStudio10TargetGenerator::ComputeRcOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::ResourceCompiler, gg->GetRcFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::ResourceCompiler, gg->GetRcFlagTable());
   Options& rcOptions = *pOptions;
 
   std::string CONFIG = cmSystemTools::UpperCase(configName);
@@ -2581,8 +2582,8 @@ bool cmVisualStudio10TargetGenerator::ComputeCudaOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::CudaCompiler, gg->GetCudaFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::CudaCompiler, gg->GetCudaFlagTable());
   Options& cudaOptions = *pOptions;
 
   // Get compile flags for CUDA in this directory.
@@ -2689,8 +2690,8 @@ bool cmVisualStudio10TargetGenerator::ComputeCudaLinkOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::CudaCompiler, gg->GetCudaFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::CudaCompiler, gg->GetCudaFlagTable());
   Options& cudaLinkOptions = *pOptions;
 
   // Determine if we need to do a device link
@@ -2760,8 +2761,8 @@ bool cmVisualStudio10TargetGenerator::ComputeMasmOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::MasmCompiler, gg->GetMasmFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::MasmCompiler, gg->GetMasmFlagTable());
   Options& masmOptions = *pOptions;
 
   std::string CONFIG = cmSystemTools::UpperCase(configName);
@@ -2818,8 +2819,8 @@ bool cmVisualStudio10TargetGenerator::ComputeNasmOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::NasmCompiler, gg->GetNasmFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::NasmCompiler, gg->GetNasmFlagTable());
   Options& nasmOptions = *pOptions;
 
   std::string CONFIG = cmSystemTools::UpperCase(configName);
@@ -2980,7 +2981,7 @@ void cmVisualStudio10TargetGenerator::WriteAntBuildOptions(
   if (const char* nativeLibDirectoriesExpression =
         this->GeneratorTarget->GetProperty("ANDROID_NATIVE_LIB_DIRECTORIES")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
       ge.Parse(nativeLibDirectoriesExpression);
     std::string nativeLibDirs =
       cge->Evaluate(this->LocalGenerator, configName);
@@ -2993,7 +2994,7 @@ void cmVisualStudio10TargetGenerator::WriteAntBuildOptions(
         this->GeneratorTarget->GetProperty(
           "ANDROID_NATIVE_LIB_DEPENDENCIES")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
       ge.Parse(nativeLibDependenciesExpression);
     std::string nativeLibDeps =
       cge->Evaluate(this->LocalGenerator, configName);
@@ -3012,7 +3013,7 @@ void cmVisualStudio10TargetGenerator::WriteAntBuildOptions(
   if (const char* jarDirectoriesExpression =
         this->GeneratorTarget->GetProperty("ANDROID_JAR_DIRECTORIES")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
       ge.Parse(jarDirectoriesExpression);
     std::string jarDirectories =
       cge->Evaluate(this->LocalGenerator, configName);
@@ -3074,8 +3075,9 @@ bool cmVisualStudio10TargetGenerator::ComputeLinkOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::Linker, gg->GetLinkFlagTable(), 0, this));
+  auto pOptions =
+    cm::make_unique<Options>(this->LocalGenerator, Options::Linker,
+                             gg->GetLinkFlagTable(), nullptr, this);
   Options& linkOptions = *pOptions;
 
   cmGeneratorTarget::LinkClosure const* linkClosure =
diff --git a/Source/cmWhileCommand.cxx b/Source/cmWhileCommand.cxx
index 172ac62..a080034 100644
--- a/Source/cmWhileCommand.cxx
+++ b/Source/cmWhileCommand.cxx
@@ -7,9 +7,10 @@
 #include "cmExpandedCommandArgument.h"
 #include "cmMakefile.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
+#include <memory> // IWYU pragma: keep
+
 cmWhileFunctionBlocker::cmWhileFunctionBlocker(cmMakefile* mf)
   : Makefile(mf)
   , Depth(0)
@@ -34,7 +35,8 @@ bool cmWhileFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
     // if this is the endwhile for this while loop then execute
     if (!this->Depth) {
       // Remove the function blocker for this scope or bail.
-      CM_AUTO_PTR<cmFunctionBlocker> fb(mf.RemoveFunctionBlocker(this, lff));
+      std::unique_ptr<cmFunctionBlocker> fb(
+        mf.RemoveFunctionBlocker(this, lff));
       if (!fb.get()) {
         return false;
       }
diff --git a/Source/cm_auto_ptr.hxx b/Source/cm_auto_ptr.hxx
deleted file mode 100644
index 1ac9220..0000000
--- a/Source/cm_auto_ptr.hxx
+++ /dev/null
@@ -1,220 +0,0 @@
-/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
-   file Copyright.txt or https://cmake.org/licensing for details.  */
-#ifndef CM_AUTO_PTR_HXX
-#define CM_AUTO_PTR_HXX
-
-#include "cmConfigure.h"
-
-#ifdef CMake_HAVE_CXX_AUTO_PTR
-
-#include <memory>
-#define CM_AUTO_PTR std::auto_ptr
-
-#else
-
-#define CM_AUTO_PTR cm::auto_ptr
-
-// The HP compiler cannot handle the conversions necessary to use
-// auto_ptr_ref to pass an auto_ptr returned from one function
-// directly to another function as in use_auto_ptr(get_auto_ptr()).
-// We instead use const_cast to achieve the syntax on those platforms.
-// We do not use const_cast on other platforms to maintain the C++
-// standard design and guarantee that if an auto_ptr is bound
-// to a reference-to-const then ownership will be maintained.
-#if defined(__HP_aCC)
-#define cm_AUTO_PTR_REF 0
-#define cm_AUTO_PTR_CONST const
-#define cm_AUTO_PTR_CAST(a) cast(a)
-#else
-#define cm_AUTO_PTR_REF 1
-#define cm_AUTO_PTR_CONST
-#define cm_AUTO_PTR_CAST(a) a
-#endif
-
-// In C++11, clang will warn about using dynamic exception specifications
-// as they are deprecated.  But as this class is trying to faithfully
-// mimic std::auto_ptr, we want to keep the 'throw()' decorations below.
-// So we suppress the warning.
-#if defined(__clang__) && defined(__has_warning)
-#if __has_warning("-Wdeprecated")
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated"
-#endif
-#endif
-
-namespace cm {
-
-template <class X>
-class auto_ptr;
-
-#if cm_AUTO_PTR_REF
-namespace detail {
-// The auto_ptr_ref template is supposed to be a private member of
-// auto_ptr but Borland 5.8 cannot handle it.  Instead put it in
-// a private namespace.
-template <class Y>
-struct auto_ptr_ref
-{
-  Y* p_;
-
-  // The extra constructor argument prevents implicit conversion to
-  // auto_ptr_ref from auto_ptr through the constructor.  Normally
-  // this should be done with the explicit keyword but Borland 5.x
-  // generates code in the conversion operator to call itself
-  // infinately.
-  auto_ptr_ref(Y* p, int)
-    : p_(p)
-  {
-  }
-};
-}
-#endif
-
-/** C++98 Standard Section 20.4.5 - Template class auto_ptr.  */
-template <class X>
-class auto_ptr
-{
-#if !cm_AUTO_PTR_REF
-  template <typename Y>
-  static inline auto_ptr<Y>& cast(auto_ptr<Y> const& a)
-  {
-    return const_cast<auto_ptr<Y>&>(a);
-  }
-#endif
-
-  /** The pointer to the object held.  */
-  X* x_;
-
-public:
-  /** The type of object held by the auto_ptr.  */
-  typedef X element_type;
-
-  /** Construct from an auto_ptr holding a compatible object.  This
-      transfers ownership to the newly constructed auto_ptr.  */
-  template <class Y>
-  auto_ptr(auto_ptr<Y> cm_AUTO_PTR_CONST& a) throw()
-    : x_(cm_AUTO_PTR_CAST(a).release())
-  {
-  }
-
-  /** Assign from an auto_ptr holding a compatible object.  This
-      transfers ownership to the left-hand-side of the assignment.  */
-  template <class Y>
-  auto_ptr& operator=(auto_ptr<Y> cm_AUTO_PTR_CONST& a) throw() // NOLINT
-  {
-    this->reset(cm_AUTO_PTR_CAST(a).release());
-    return *this; // NOLINT
-  }
-
-  /**
-   * Explicitly construct from a raw pointer.  This is typically
-   * called with the result of operator new.  For example:
-   *
-   *   auto_ptr<X> ptr(new X());
-   */
-  explicit auto_ptr(X* p = nullptr) throw()
-    : x_(p)
-  {
-  }
-
-  /** Construct from another auto_ptr holding an object of the same
-      type.  This transfers ownership to the newly constructed
-      auto_ptr.  */
-  auto_ptr(auto_ptr cm_AUTO_PTR_CONST& a) throw()
-    : x_(cm_AUTO_PTR_CAST(a).release())
-  {
-  }
-
-  /** Assign from another auto_ptr holding an object of the same type.
-      This transfers ownership to the newly constructed auto_ptr.  */
-  auto_ptr& operator=(auto_ptr cm_AUTO_PTR_CONST& a) throw() // NOLINT
-  {
-    this->reset(cm_AUTO_PTR_CAST(a).release());
-    return *this; // NOLINT
-  }
-
-  /** Destruct and delete the object held.  */
-  ~auto_ptr() throw()
-  {
-    // Assume object destructor is nothrow.
-    delete this->x_;
-  }
-
-  /** Dereference and return a reference to the object held.  */
-  X& operator*() const throw() { return *this->x_; }
-
-  /** Return a pointer to the object held.  */
-  X* operator->() const throw() { return this->x_; }
-
-  /** Return a pointer to the object held.  */
-  X* get() const throw() { return this->x_; }
-
-  /** Return a pointer to the object held and reset to hold no object.
-      This transfers ownership to the caller.  */
-  X* release() throw()
-  {
-    X* x = this->x_;
-    this->x_ = nullptr;
-    return x;
-  }
-
-  /** Assume ownership of the given object.  The object previously
-      held is deleted.  */
-  void reset(X* p = 0) throw()
-  {
-    if (this->x_ != p) {
-      // Assume object destructor is nothrow.
-      delete this->x_;
-      this->x_ = p;
-    }
-  }
-
-  /** Convert to an auto_ptr holding an object of a compatible type.
-      This transfers ownership to the returned auto_ptr.  */
-  template <class Y>
-  operator auto_ptr<Y>() throw()
-  {
-    return auto_ptr<Y>(this->release());
-  }
-
-#if cm_AUTO_PTR_REF
-  /** Construct from an auto_ptr_ref.  This is used when the
-      constructor argument is a call to a function returning an
-      auto_ptr.  */
-  auto_ptr(detail::auto_ptr_ref<X> r) throw()
-    : x_(r.p_)
-  {
-  }
-
-  /** Assign from an auto_ptr_ref.  This is used when a function
-      returning an auto_ptr is passed on the right-hand-side of an
-      assignment.  */
-  auto_ptr& operator=(detail::auto_ptr_ref<X> r) throw()
-  {
-    this->reset(r.p_);
-    return *this; // NOLINT
-  }
-
-  /** Convert to an auto_ptr_ref.  This is used when a function
-      returning an auto_ptr is the argument to the constructor of
-      another auto_ptr.  */
-  template <class Y>
-  operator detail::auto_ptr_ref<Y>() throw()
-  {
-    return detail::auto_ptr_ref<Y>(this->release(), 1);
-  }
-#endif
-};
-
-} // namespace cm
-
-// Undo warning suppression.
-#if defined(__clang__) && defined(__has_warning)
-#if __has_warning("-Wdeprecated")
-#pragma clang diagnostic pop
-#endif
-#endif
-
-#endif
-
-#endif
diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index e61acb1..61595d5 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -24,7 +24,6 @@
 #include "cmUtils.hxx"
 #include "cmVersionConfig.h"
 #include "cmWorkingDirectory.h"
-#include "cm_auto_ptr.hxx"
 #include "cm_sys_stat.h"
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
@@ -111,6 +110,7 @@
 #include "cmsys/RegularExpression.hxx"
 #include <algorithm>
 #include <iostream>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -482,15 +482,15 @@ void cmake::ReadListFile(const std::vector<std::string>& args,
     snapshot.GetDirectory().SetCurrentSource(
       cmSystemTools::GetCurrentWorkingDirectory());
     snapshot.SetDefaultDefinitions();
-    CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(gg, snapshot));
+    cmMakefile mf(gg, snapshot);
     if (this->GetWorkingMode() != NORMAL_MODE) {
       std::string file(cmSystemTools::CollapseFullPath(path));
       cmSystemTools::ConvertToUnixSlashes(file);
-      mf->SetScriptModeFile(file.c_str());
+      mf.SetScriptModeFile(file.c_str());
 
-      mf->SetArgcArgv(args);
+      mf.SetArgcArgv(args);
     }
-    if (!mf->ReadListFile(path)) {
+    if (!mf.ReadListFile(path)) {
       cmSystemTools::Error("Error processing file: ", path);
     }
     this->SetHomeDirectory(homeDir);
@@ -1874,8 +1874,8 @@ int cmake::CheckBuildSystem()
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator gg(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&gg, cm.GetCurrentSnapshot()));
-  if (!mf->ReadListFile(this->CheckBuildSystemArgument.c_str()) ||
+  cmMakefile mf(&gg, cm.GetCurrentSnapshot());
+  if (!mf.ReadListFile(this->CheckBuildSystemArgument.c_str()) ||
       cmSystemTools::GetErrorOccuredFlag()) {
     if (verbose) {
       std::ostringstream msg;
@@ -1889,25 +1889,25 @@ int cmake::CheckBuildSystem()
 
   if (this->ClearBuildSystem) {
     // Get the generator used for this build system.
-    const char* genName = mf->GetDefinition("CMAKE_DEPENDS_GENERATOR");
+    const char* genName = mf.GetDefinition("CMAKE_DEPENDS_GENERATOR");
     if (!genName || genName[0] == '\0') {
       genName = "Unix Makefiles";
     }
 
     // Create the generator and use it to clear the dependencies.
-    CM_AUTO_PTR<cmGlobalGenerator> ggd(this->CreateGlobalGenerator(genName));
-    if (ggd.get()) {
+    std::unique_ptr<cmGlobalGenerator> ggd(
+      this->CreateGlobalGenerator(genName));
+    if (ggd) {
       cm.GetCurrentSnapshot().SetDefaultDefinitions();
-      CM_AUTO_PTR<cmMakefile> mfd(
-        new cmMakefile(ggd.get(), cm.GetCurrentSnapshot()));
-      CM_AUTO_PTR<cmLocalGenerator> lgd(ggd->CreateLocalGenerator(mfd.get()));
-      lgd->ClearDependencies(mfd.get(), verbose);
+      cmMakefile mfd(ggd.get(), cm.GetCurrentSnapshot());
+      std::unique_ptr<cmLocalGenerator> lgd(ggd->CreateLocalGenerator(&mfd));
+      lgd->ClearDependencies(&mfd, verbose);
     }
   }
 
   // If any byproduct of makefile generation is missing we must re-run.
   std::vector<std::string> products;
-  if (const char* productStr = mf->GetDefinition("CMAKE_MAKEFILE_PRODUCTS")) {
+  if (const char* productStr = mf.GetDefinition("CMAKE_MAKEFILE_PRODUCTS")) {
     cmSystemTools::ExpandListArgument(productStr, products);
   }
   for (std::string const& p : products) {
@@ -1925,8 +1925,8 @@ int cmake::CheckBuildSystem()
   // Get the set of dependencies and outputs.
   std::vector<std::string> depends;
   std::vector<std::string> outputs;
-  const char* dependsStr = mf->GetDefinition("CMAKE_MAKEFILE_DEPENDS");
-  const char* outputsStr = mf->GetDefinition("CMAKE_MAKEFILE_OUTPUTS");
+  const char* dependsStr = mf.GetDefinition("CMAKE_MAKEFILE_DEPENDS");
+  const char* outputsStr = mf.GetDefinition("CMAKE_MAKEFILE_OUTPUTS");
   if (dependsStr && outputsStr) {
     cmSystemTools::ExpandListArgument(dependsStr, depends);
     cmSystemTools::ExpandListArgument(outputsStr, outputs);
@@ -2039,19 +2039,18 @@ void cmake::MarkCliAsUsed(const std::string& variable)
 void cmake::GenerateGraphViz(const char* fileName) const
 {
 #ifdef CMAKE_BUILD_WITH_CMAKE
-  CM_AUTO_PTR<cmGraphVizWriter> gvWriter(
-    new cmGraphVizWriter(this->GetGlobalGenerator()->GetLocalGenerators()));
+  cmGraphVizWriter gvWriter(this->GetGlobalGenerator()->GetLocalGenerators());
 
   std::string settingsFile = this->GetHomeOutputDirectory();
   settingsFile += "/CMakeGraphVizOptions.cmake";
   std::string fallbackSettingsFile = this->GetHomeDirectory();
   fallbackSettingsFile += "/CMakeGraphVizOptions.cmake";
 
-  gvWriter->ReadSettings(settingsFile.c_str(), fallbackSettingsFile.c_str());
+  gvWriter.ReadSettings(settingsFile.c_str(), fallbackSettingsFile.c_str());
 
-  gvWriter->WritePerTargetFiles(fileName);
-  gvWriter->WriteTargetDependersFiles(fileName);
-  gvWriter->WriteGlobalFile(fileName);
+  gvWriter.WritePerTargetFiles(fileName);
+  gvWriter.WriteTargetDependersFiles(fileName);
+  gvWriter.WriteGlobalFile(fileName);
 
 #endif
 }
@@ -2357,7 +2356,7 @@ int cmake::Build(const std::string& dir, const std::string& target,
     std::cerr << "Error: could not find CMAKE_GENERATOR in Cache\n";
     return 1;
   }
-  CM_AUTO_PTR<cmGlobalGenerator> gen(
+  std::unique_ptr<cmGlobalGenerator> gen(
     this->CreateGlobalGenerator(cachedGenerator));
   if (!gen.get()) {
     std::cerr << "Error: could create CMAKE_GENERATOR \"" << cachedGenerator
diff --git a/Source/cmcmd.cxx b/Source/cmcmd.cxx
index 62a0094..5a9e321 100644
--- a/Source/cmcmd.cxx
+++ b/Source/cmcmd.cxx
@@ -12,7 +12,6 @@
 #include "cmSystemTools.h"
 #include "cmUtils.hxx"
 #include "cmVersion.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
@@ -37,6 +36,7 @@
 #include <functional>
 #include <iostream>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -928,8 +928,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
         cmStateSnapshot snapshot = cm.GetCurrentSnapshot();
         snapshot.GetDirectory().SetCurrentBinary(startOutDir);
         snapshot.GetDirectory().SetCurrentSource(startDir);
-        CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(ggd, snapshot));
-        CM_AUTO_PTR<cmLocalGenerator> lgd(ggd->CreateLocalGenerator(mf.get()));
+        cmMakefile mf(ggd, snapshot);
+        std::unique_ptr<cmLocalGenerator> lgd(ggd->CreateLocalGenerator(&mf));
 
         // Actually scan dependencies.
         return lgd->UpdateDependencies(depInfo.c_str(), verbose, color) ? 0