Define _GNU_SOURCE in C++ mode so that clang works with GNU libstdc++.

llvm-svn: 80289
2009-08-27 22:01:41 +00:00
parent 8a46219c57
commit 80110179f4
1 changed files with 2 additions and 0 deletions
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -313,6 +313,8 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
      //   C++ translation unit.
      DefineBuiltinMacro(Buf, "__cplusplus=199711L");
    DefineBuiltinMacro(Buf, "__private_extern__=extern");
+    // Ugly hack to work with GNU libstdc++.
+    DefineBuiltinMacro(Buf, "_GNU_SOURCE=1");
  }
  
  // Filter out some microsoft extensions when trying to parse in ms-compat