install: Support generator expressions in FILES and PROGRAMS mode

Teach the install(FILES) and install(PROGRAMS) commands to evaluate
generator expressions in the list of files.

Extend the ExportImport test to cover installation cases involving
generator expressions.

5 files changed, 60 insertions, 7 deletions

diff --git a/Source/cmInstallCommand.cxx b/Source/cmInstallCommand.cxx
index f4fbb8a..0878aae 100644
--- a/Source/cmInstallCommand.cxx
+++ b/Source/cmInstallCommand.cxx
@@ -1355,7 +1355,8 @@ bool cmInstallCommand::MakeFilesFullPath(const char* modeName,
       ++fileIt)
     {
     std::string file = (*fileIt);
-    if(!cmSystemTools::FileIsFullPath(file.c_str()))
+    std::string::size_type gpos = cmGeneratorExpression::Find(file);
+    if(gpos != 0 && !cmSystemTools::FileIsFullPath(file.c_str()))
       {
       file = this->Makefile->GetCurrentDirectory();
       file += "/";
@@ -1363,7 +1364,7 @@ bool cmInstallCommand::MakeFilesFullPath(const char* modeName,
       }
 
     // Make sure the file is not a directory.
-    if(cmSystemTools::FileIsDirectory(file.c_str()))
+    if(gpos == file.npos && cmSystemTools::FileIsDirectory(file.c_str()))
       {
       cmOStringStream e;
       e << modeName << " given directory \"" << (*fileIt) << "\" to install.";
diff --git a/Source/cmInstallFilesCommand.cxx b/Source/cmInstallFilesCommand.cxx
index 32e463b..488d486 100644
--- a/Source/cmInstallFilesCommand.cxx
+++ b/Source/cmInstallFilesCommand.cxx
@@ -148,7 +148,8 @@ void cmInstallFilesCommand::CreateInstallGenerator() const
  */
 std::string cmInstallFilesCommand::FindInstallSource(const char* name) const
 {
-  if(cmSystemTools::FileIsFullPath(name))
+  if(cmSystemTools::FileIsFullPath(name) ||
+     cmGeneratorExpression::Find(name) == 0)
     {
     // This is a full path.
     return name;
diff --git a/Source/cmInstallFilesGenerator.cxx b/Source/cmInstallFilesGenerator.cxx
index 506dcbf..ec15044 100644
--- a/Source/cmInstallFilesGenerator.cxx
+++ b/Source/cmInstallFilesGenerator.cxx
@@ -11,6 +11,9 @@
 ============================================================================*/
 #include "cmInstallFilesGenerator.h"
 
+#include "cmGeneratorExpression.h"
+#include "cmSystemTools.h"
+
 //----------------------------------------------------------------------------
 cmInstallFilesGenerator
 ::cmInstallFilesGenerator(cmMakefile* mf,
@@ -27,6 +30,15 @@ cmInstallFilesGenerator
   FilePermissions(file_permissions),
   Rename(rename), Optional(optional)
 {
+  // We need per-config actions if any files have generator expressions.
+  for(std::vector<std::string>::const_iterator i = files.begin();
+      !this->ActionsPerConfig && i != files.end(); ++i)
+    {
+    if(cmGeneratorExpression::Find(*i) != std::string::npos)
+      {
+      this->ActionsPerConfig = true;
+      }
+    }
 }
 
 //----------------------------------------------------------------------------
@@ -36,8 +48,9 @@ cmInstallFilesGenerator
 }
 
 //----------------------------------------------------------------------------
-void cmInstallFilesGenerator::GenerateScriptActions(std::ostream& os,
-                                                    Indent const& indent)
+void cmInstallFilesGenerator::AddFilesInstallRule(
+  std::ostream& os, Indent const& indent,
+  std::vector<std::string> const& files)
 {
   // Write code to install the files.
   const char* no_dir_permissions = 0;
@@ -45,8 +58,40 @@ void cmInstallFilesGenerator::GenerateScriptActions(std::ostream& os,
                        (this->Programs
                         ? cmInstallType_PROGRAMS
                         : cmInstallType_FILES),
-                       this->Files,
+                       files,
                        this->Optional,
                        this->FilePermissions.c_str(), no_dir_permissions,
                        this->Rename.c_str(), 0, indent);
 }
+
+//----------------------------------------------------------------------------
+void cmInstallFilesGenerator::GenerateScriptActions(std::ostream& os,
+                                                    Indent const& indent)
+{
+  if(this->ActionsPerConfig)
+    {
+    this->cmInstallGenerator::GenerateScriptActions(os, indent);
+    }
+  else
+    {
+    this->AddFilesInstallRule(os, indent, this->Files);
+    }
+}
+
+//----------------------------------------------------------------------------
+void cmInstallFilesGenerator::GenerateScriptForConfig(std::ostream& os,
+                                                      const char* config,
+                                                      Indent const& indent)
+{
+  std::vector<std::string> files;
+  cmListFileBacktrace lfbt;
+  cmGeneratorExpression ge(lfbt);
+  for(std::vector<std::string>::const_iterator i = this->Files.begin();
+      i != this->Files.end(); ++i)
+    {
+    cmsys::auto_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(*i);
+    cmSystemTools::ExpandListArgument(cge->Evaluate(this->Makefile, config),
+                                      files);
+    }
+  this->AddFilesInstallRule(os, indent, files);
+}
diff --git a/Source/cmInstallFilesGenerator.h b/Source/cmInstallFilesGenerator.h
index 02b005e..9dea296 100644
--- a/Source/cmInstallFilesGenerator.h
+++ b/Source/cmInstallFilesGenerator.h
@@ -34,6 +34,11 @@ public:
 
 protected:
   virtual void GenerateScriptActions(std::ostream& os, Indent const& indent);
+  virtual void GenerateScriptForConfig(std::ostream& os,
+                                       const char* config,
+                                       Indent const& indent);
+  void AddFilesInstallRule(std::ostream& os, Indent const& indent,
+                           std::vector<std::string> const& files);
 
   cmMakefile* Makefile;
   std::vector<std::string> Files;
diff --git a/Source/cmInstallProgramsCommand.cxx b/Source/cmInstallProgramsCommand.cxx
index 9f2945f..54d903a 100644
--- a/Source/cmInstallProgramsCommand.cxx
+++ b/Source/cmInstallProgramsCommand.cxx
@@ -109,7 +109,8 @@ void cmInstallProgramsCommand::FinalPass()
 std::string cmInstallProgramsCommand
 ::FindInstallSource(const char* name) const
 {
-  if(cmSystemTools::FileIsFullPath(name))
+  if(cmSystemTools::FileIsFullPath(name) ||
+     cmGeneratorExpression::Find(name) == 0)
     {
     // This is a full path.
     return name;