commit 666479b24b1ab5ca0239779a502899b70beee700
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 740edb6b15a4ed3795eba23f918d8970fec96df5
parent 51ac7d494f5ed15718edde97d190dbb52ea664be

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



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@80289 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Frontend/InitPreprocessor.cpp

diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index 466cbaf..5550547 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/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