diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index e4ecd1fcd..d5775fbf8 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -273,6 +273,21 @@ void cmMakefile::IssueMessage(cmake::MessageType t,
     }
 }
 
+std::vector<cmValueWithOrigin> cmMakefile::GetIncludeDirectoriesEntries() const
+{
+  return this->IncludeDirectoriesEntries;
+}
+
+std::vector<cmValueWithOrigin> cmMakefile::GetCompileOptionsEntries() const
+{
+  return this->CompileOptionsEntries;
+}
+
+std::vector<cmValueWithOrigin> cmMakefile::GetCompileDefinitionsEntries() const
+{
+  return this->CompileDefinitionsEntries;
+}
+
 //----------------------------------------------------------------------------
 cmListFileBacktrace cmMakefile::GetBacktrace() const
 {
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index d9dd46668..783658d48 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -746,18 +746,9 @@ public:
   /** Set whether or not to report a CMP0000 violation.  */
   void SetCheckCMP0000(bool b) { this->CheckCMP0000 = b; }
 
-  std::vector<cmValueWithOrigin> GetIncludeDirectoriesEntries() const
-  {
-    return this->IncludeDirectoriesEntries;
-  }
-  std::vector<cmValueWithOrigin> GetCompileOptionsEntries() const
-  {
-    return this->CompileOptionsEntries;
-  }
-  std::vector<cmValueWithOrigin> GetCompileDefinitionsEntries() const
-  {
-    return this->CompileDefinitionsEntries;
-  }
+  std::vector<cmValueWithOrigin> GetIncludeDirectoriesEntries() const;
+  std::vector<cmValueWithOrigin> GetCompileOptionsEntries() const;
+  std::vector<cmValueWithOrigin> GetCompileDefinitionsEntries() const;
 
   bool IsConfigured() const { return this->Configured; }
   void SetConfigured(){ this->Configured = true; }