commit 80110179f49de99e52e5167568b151c1ab420b96
author Eli Friedman <eli.friedman@gmail.com> Thu Aug 27 22:01:41 2009 +0000
committer Eli Friedman <eli.friedman@gmail.com> Thu Aug 27 22:01:41 2009 +0000
tree a723d7f92975d68369646f80fdcf8ecd7cb8166f
parent 8a46219c57c19d51804dad28632c625b8ad0a2a6

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

llvm-svn: 80289

clang/lib/Frontend/InitPreprocessor.cpp

diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index 466cbaf..55505477 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -313,6 +313,8 @@
       //   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