export(): Process the export() command at generate time.

Make the API for adding targets string based so that it can easily
use cmGeneratorTarget.

Teach the cmIncludeCommand to generate the exported file at
configure-time instead if it is to be include()d.

The RunCMake.ExportWithoutLanguage test now needs a dummy header.h
file as expected error from export() is now reported after the
missing file error.

1 files changed, 56 insertions, 0 deletions

diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index eacf85b..fb205be 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -27,6 +27,7 @@
 #include "cmGeneratorTarget.h"
 #include "cmGeneratorExpression.h"
 #include "cmGeneratorExpressionEvaluationFile.h"
+#include "cmExportBuildFileGenerator.h"
 
 #include <cmsys/Directory.hxx>
 
@@ -77,6 +78,12 @@ cmGlobalGenerator::~cmGlobalGenerator()
     {
     delete *li;
     }
+  for(std::map<std::string, cmExportBuildFileGenerator*>::iterator
+        i = this->BuildExportSets.begin();
+      i != this->BuildExportSets.end(); ++i)
+    {
+    delete i->second;
+    }
   this->LocalGenerators.clear();
 
   if (this->ExtraGenerator)
@@ -183,6 +190,34 @@ void cmGlobalGenerator::ResolveLanguageCompiler(const std::string &lang,
                          doc.c_str(), cmCacheManager::FILEPATH);
 }
 
+void cmGlobalGenerator::AddBuildExportSet(cmExportBuildFileGenerator* gen)
+{
+  this->BuildExportSets[gen->GetMainExportFileName()] = gen;
+}
+
+bool cmGlobalGenerator::GenerateImportFile(const std::string &file)
+{
+  std::map<std::string, cmExportBuildFileGenerator*>::iterator it
+                                          = this->BuildExportSets.find(file);
+  if (it != this->BuildExportSets.end())
+    {
+    bool result = it->second->GenerateImportFile();
+    delete it->second;
+    it->second = 0;
+    this->BuildExportSets.erase(it);
+    return result;
+    }
+  return false;
+}
+
+bool
+cmGlobalGenerator::IsExportedTargetsFile(const std::string &filename) const
+{
+  const std::map<std::string, cmExportBuildFileGenerator*>::const_iterator it
+                                      = this->BuildExportSets.find(filename);
+  return it != this->BuildExportSets.end();
+}
+
 // Find the make program for the generator, required for try compiles
 void cmGlobalGenerator::FindMakeProgram(cmMakefile* mf)
 {
@@ -966,6 +1001,14 @@ void cmGlobalGenerator::Configure()
     }
 }
 
+cmExportBuildFileGenerator*
+cmGlobalGenerator::GetExportedTargetsFile(const std::string &filename) const
+{
+  std::map<std::string, cmExportBuildFileGenerator*>::const_iterator it
+    = this->BuildExportSets.find(filename);
+  return it == this->BuildExportSets.end() ? 0 : it->second;
+}
+
 bool cmGlobalGenerator::CheckALLOW_DUPLICATE_CUSTOM_TARGETS()
 {
   // If the property is not enabled then okay.
@@ -1091,6 +1134,19 @@ void cmGlobalGenerator::Generate()
     }
   this->SetCurrentLocalGenerator(0);
 
+  for (std::map<std::string, cmExportBuildFileGenerator*>::iterator
+      it = this->BuildExportSets.begin(); it != this->BuildExportSets.end();
+      ++it)
+    {
+    if (!it->second->GenerateImportFile()
+        && !cmSystemTools::GetErrorOccuredFlag())
+      {
+      this->GetCMakeInstance()
+          ->IssueMessage(cmake::FATAL_ERROR, "Could not write export file.",
+                        cmListFileBacktrace());
+      return;
+      }
+    }
   // Update rule hashes.
   this->CheckRuleHashes();