1 files changed, 0 insertions, 24 deletions
diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index aacae49540..ea0f8c0877 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -294,30 +294,6 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
       //   C++ translation unit.
       Builder.defineMacro("__cplusplus", "199711L");
     Builder.defineMacro("__private_extern__", "extern");
-
-    // Define _GNU_SOURCE on platforms where we expect to use glibc.
-    switch (TI.getTriple().getOS()) {
-    case llvm::Triple::Cygwin:
-    case llvm::Triple::MinGW64:
-    case llvm::Triple::MinGW32:
-    case llvm::Triple::Linux:
-    case llvm::Triple::Solaris:
-    case llvm::Triple::AuroraUX:
-      Builder.defineMacro("_GNU_SOURCE");
-      break;
-
-    case llvm::Triple::Darwin:
-    case llvm::Triple::DragonFly:
-    case llvm::Triple::FreeBSD:
-    case llvm::Triple::UnknownOS:
-    case llvm::Triple::Lv2:
-    case llvm::Triple::NetBSD:
-    case llvm::Triple::OpenBSD:
-    case llvm::Triple::Psp:
-    case llvm::Triple::Win32:
-    case llvm::Triple::Haiku:
-      break;
-    }
   }
 
   if (LangOpts.Microsoft) {