diff --git a/Source/cmCommonTargetGenerator.cxx b/Source/cmCommonTargetGenerator.cxx
index 70e9ce29b..ce351eea9 100644
--- a/Source/cmCommonTargetGenerator.cxx
+++ b/Source/cmCommonTargetGenerator.cxx
@@ -332,3 +332,29 @@ std::string cmCommonTargetGenerator::GetFlags(const std::string &l)
     }
   return i->second;
 }
+
+std::string cmCommonTargetGenerator::GetDefines(const std::string &l)
+{
+  ByLanguageMap::iterator i = this->DefinesByLanguage.find(l);
+  if (i == this->DefinesByLanguage.end())
+    {
+    std::set<std::string> defines;
+    const char *lang = l.c_str();
+    // Add the export symbol definition for shared library objects.
+    if(const char* exportMacro = this->Target->GetExportMacro())
+      {
+      this->LocalGenerator->AppendDefines(defines, exportMacro);
+      }
+
+    // Add preprocessor definitions for this target and configuration.
+    this->LocalGenerator->AddCompileDefinitions(defines, this->Target,
+                            this->LocalGenerator->GetConfigName(), l);
+
+    std::string definesString;
+    this->LocalGenerator->JoinDefines(defines, definesString, lang);
+
+    ByLanguageMap::value_type entry(l, definesString);
+    i = this->DefinesByLanguage.insert(entry).first;
+    }
+  return i->second;
+}
diff --git a/Source/cmCommonTargetGenerator.h b/Source/cmCommonTargetGenerator.h
index 5407c61d6..e184dba31 100644
--- a/Source/cmCommonTargetGenerator.h
+++ b/Source/cmCommonTargetGenerator.h
@@ -81,6 +81,8 @@ protected:
   typedef std::map<std::string, std::string> ByLanguageMap;
   std::string GetFlags(const std::string &l);
   ByLanguageMap FlagsByLanguage;
+  std::string GetDefines(const std::string &l);
+  ByLanguageMap DefinesByLanguage;
 };
 
 #endif
diff --git a/Source/cmMakefileTargetGenerator.cxx b/Source/cmMakefileTargetGenerator.cxx
index 10799c6f7..ef4bbbe97 100644
--- a/Source/cmMakefileTargetGenerator.cxx
+++ b/Source/cmMakefileTargetGenerator.cxx
@@ -272,32 +272,6 @@ void cmMakefileTargetGenerator::WriteCommonCodeRules()
     << "\n\n";
 }
 
-std::string cmMakefileTargetGenerator::GetDefines(const std::string &l)
-{
-  ByLanguageMap::iterator i = this->DefinesByLanguage.find(l);
-  if (i == this->DefinesByLanguage.end())
-    {
-    std::set<std::string> defines;
-    const char *lang = l.c_str();
-    // Add the export symbol definition for shared library objects.
-    if(const char* exportMacro = this->Target->GetExportMacro())
-      {
-      this->LocalGenerator->AppendDefines(defines, exportMacro);
-      }
-
-    // Add preprocessor definitions for this target and configuration.
-    this->LocalGenerator->AddCompileDefinitions(defines, this->Target,
-                            this->LocalGenerator->GetConfigName(), l);
-
-    std::string definesString;
-    this->LocalGenerator->JoinDefines(defines, definesString, lang);
-
-    ByLanguageMap::value_type entry(l, definesString);
-    i = this->DefinesByLanguage.insert(entry).first;
-    }
-  return i->second;
-}
-
 void cmMakefileTargetGenerator::WriteTargetLanguageFlags()
 {
   // write language flags for target
diff --git a/Source/cmMakefileTargetGenerator.h b/Source/cmMakefileTargetGenerator.h
index 9d05cd5cb..b8856724b 100644
--- a/Source/cmMakefileTargetGenerator.h
+++ b/Source/cmMakefileTargetGenerator.h
@@ -234,9 +234,6 @@ protected:
   std::set<std::string> MacContentFolders;
   cmOSXBundleGenerator* OSXBundleGenerator;
   MacOSXContentGeneratorType* MacOSXContentGenerator;
-
-  std::string GetDefines(const std::string &l);
-  ByLanguageMap DefinesByLanguage;
 };
 
 #endif