1 files changed, 10 insertions, 2 deletions
diff --git a/include/clang/Frontend/InitPreprocessor.h b/include/clang/Frontend/InitPreprocessor.h
index b29ee2728a..bf27b19aa3 100644
--- a/include/clang/Frontend/InitPreprocessor.h
+++ b/include/clang/Frontend/InitPreprocessor.h
@@ -29,7 +29,16 @@ class PreprocessorInitOptions {
   std::vector<std::pair<std::string, bool/*isPTH*/> > Includes;
   std::vector<std::string> MacroIncludes;
 
+  unsigned UsePredefines : 1; /// Initialize the preprocessor with the compiler
+                              /// and target specific predefines.
+
 public:
+  PreprocessorInitOptions() : UsePredefines(true) {}
+
+  bool getUsePredefines() const { return UsePredefines; }
+  void setUsePredefines(bool Value) {
+    UsePredefines = Value;
+  }
 
   void addMacroDef(const std::string &Name) {
     Macros.push_back(std::make_pair(Name, false));
@@ -63,8 +72,7 @@ public:
 /// environment ready to process a single file. This returns true on error.
 ///
 bool InitializePreprocessor(Preprocessor &PP,
-                            const PreprocessorInitOptions& InitOptions,
-                            bool undef_macros);
+                            const PreprocessorInitOptions& InitOptions);
 
 } // end namespace clang