BUG: fix for bug 1396, object files could not be used as sources any more

Source/cmGlobalGenerator.cxx

@@ -330,6 +330,16 @@ const char* cmGlobalGenerator::GetLanguageOutputExtensionFromExtension(const cha
     return "";
     }
   const char* lang = this->GetLanguageFromExtension(ext);
+  if(!lang || *lang == 0)
+    {
+    // if no language is found then check to see if it is already an
+    // ouput extension for some language.  In that case it should be ignored
+    // and in this map, so it will not be compiled but will just be used.
+    if(m_OutputExtensions.count(ext))
+      {
+      return ext;
+      }
+    }
   return this->GetLanguageOutputExtensionForLanguage(lang);
 }
 
@@ -362,6 +372,11 @@ void cmGlobalGenerator::SetLanguageEnabled(const char* l, cmMakefile* mf)
   if(outputExtension)
     {
     m_LanguageToOutputExtension[l] = outputExtension;
+    m_OutputExtensions[outputExtension] = outputExtension;
+    if(outputExtension[0] == '.')
+      {
+      m_OutputExtensions[outputExtension+1] = outputExtension+1;
+      }
     }
   
   std::string linkerPrefVar = std::string("CMAKE_") + 
@@ -676,6 +691,7 @@ void cmGlobalGenerator::EnableLanguagesFromGenerator(cmGlobalGenerator *gen )
   this->m_IgnoreExtensions = gen->m_IgnoreExtensions;
   this->m_LanguageToOutputExtension = gen->m_LanguageToOutputExtension;
   this->m_LanguageToLinkerPreference = gen->m_LanguageToLinkerPreference;
+  this->m_OutputExtensions = gen->m_OutputExtensions;
 }
 
 //----------------------------------------------------------------------------

Source/cmGlobalGenerator.h

@@ -133,6 +133,7 @@ private:
   // in EnableLanguagesFromGenerator 
   std::map<cmStdString, bool> m_IgnoreExtensions;
   std::map<cmStdString, bool> m_LanguageEnabled;
+  std::map<cmStdString, cmStdString> m_OutputExtensions;
   std::map<cmStdString, cmStdString> m_LanguageToOutputExtension;
   std::map<cmStdString, cmStdString> m_ExtensionToLanguage;
   std::map<cmStdString, cmStdString> m_LanguageToLinkerPreference;

Source/cmLocalUnixMakefileGenerator.cxx

@@ -465,6 +465,7 @@ void cmLocalUnixMakefileGenerator::OutputTargetRules(std::ostream& fout)
       }
     }
   fout << "\n\n";
+  std::string outputName;
   // get the classes from the source lists then add them to the groups
   for(cmTargets::const_iterator l = tgts.begin(); 
       l != tgts.end(); l++)
@@ -524,7 +525,17 @@ void cmLocalUnixMakefileGenerator::OutputTargetRules(std::ostream& fout)
             {
             std::string ofname = (*i)->GetSourceName() + outExt;
             ofname = this->CreateSafeUniqueObjectFileName(ofname.c_str());
-            fout << "\\\n\"" << this->ConvertToMakeTarget(ConvertToRelativeOutputPath(ofname.c_str()).c_str()) << "\" ";
+            outputName = this->ConvertToMakeTarget(ConvertToRelativeOutputPath(ofname.c_str()).c_str());
+            fout << "\\\n";
+            // if it already is double quoted because of spaces don't do it again.
+            if(outputName.size() && outputName[0] != '\"')
+              {
+              fout << "\"" << outputName <<  "\" ";
+              }
+            else
+              {
+              fout << outputName << " ";
+              }
             }
           }
         }
@@ -541,7 +552,18 @@ void cmLocalUnixMakefileGenerator::OutputTargetRules(std::ostream& fout)
               (*i)->GetSourceExtension().c_str());
           if(outExt.size() && (*i)->GetPropertyAsBool("EXTERNAL_OBJECT") )
             {
-            fout << "\\\n\"" << this->ConvertToMakeTarget(ConvertToRelativeOutputPath((*i)->GetFullPath().c_str()).c_str()) << "\" ";
+            outputName =
+              this->ConvertToMakeTarget(ConvertToRelativeOutputPath((*i)->GetFullPath().c_str()).c_str());
+            fout << "\\\n";
+            // if it already is double quoted because of spaces don't do it again.
+            if(outputName.size() && outputName[0] != '\"')
+               {
+              fout << "\"" << outputName <<  "\" ";
+              }
+            else
+              {
+              fout << outputName << " ";
+              }
             }
           }
         }