diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index e60432013..fdeed5bbd 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -2198,3 +2198,19 @@ cmLocalGenerator::GetObjectFileNameWithoutTarget(const cmSourceFile& source)
   // Convert to a safe name.
   return this->CreateSafeUniqueObjectFileName(objectName.c_str());
 }
+
+//----------------------------------------------------------------------------
+const char*
+cmLocalGenerator
+::GetSourceFileLanguage(const cmSourceFile& source)
+{
+  // Check for an explicitly assigned language.
+  if(const char* lang = source.GetProperty("LANGUAGE"))
+    {
+    return lang;
+    }
+
+  // Infer the language from the source file extension.
+  return (this->GlobalGenerator
+          ->GetLanguageFromExtension(source.GetSourceExtension().c_str()));
+}
diff --git a/Source/cmLocalGenerator.h b/Source/cmLocalGenerator.h
index 49bae5b7b..ec0aafae7 100644
--- a/Source/cmLocalGenerator.h
+++ b/Source/cmLocalGenerator.h
@@ -172,6 +172,9 @@ public:
   /** Get the include flags for the current makefile and language.  */
   void GetIncludeDirectories(std::vector<std::string>& dirs);
 
+  /** Compute the language used to compile the given source file.  */
+  const char* GetSourceFileLanguage(const cmSourceFile& source);
+
   // Create a struct to hold the varibles passed into
   // ExpandRuleVariables
   struct RuleVariables
diff --git a/Source/cmLocalUnixMakefileGenerator3.cxx b/Source/cmLocalUnixMakefileGenerator3.cxx
index 7e0cad78a..dc301deb4 100644
--- a/Source/cmLocalUnixMakefileGenerator3.cxx
+++ b/Source/cmLocalUnixMakefileGenerator3.cxx
@@ -1897,19 +1897,3 @@ void cmLocalUnixMakefileGenerator3
       }
     }
 }
-
-//----------------------------------------------------------------------------
-const char*
-cmLocalUnixMakefileGenerator3
-::GetSourceFileLanguage(const cmSourceFile& source)
-{
-  const char* lang = source.GetProperty("LANGUAGE");
-  if ( lang )
-    {
-    return lang;
-    }
-  // Identify the language of the source file.
-  return (this->GlobalGenerator
-          ->GetLanguageFromExtension(source.GetSourceExtension().c_str()));
-}
-
diff --git a/Source/cmLocalUnixMakefileGenerator3.h b/Source/cmLocalUnixMakefileGenerator3.h
index f83f102aa..9a61b30a0 100644
--- a/Source/cmLocalUnixMakefileGenerator3.h
+++ b/Source/cmLocalUnixMakefileGenerator3.h
@@ -174,12 +174,6 @@ public:
   // cleanup the name of a potential target
   std::string ConvertToMakeTarget(const char* tgt);
 
-
-  const char* GetSourceFileLanguage(const cmSourceFile& source);
-
-
-  
-  
   /** Called from command-line hook to scan dependencies.  */
   virtual bool ScanDependencies(const char* tgtInfo);