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Only predefine the macro _GNU_SOURCE in C++ mode when we're on a

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platform that typically uses glibc. Fixes a Boost.Thread compilation
failure.

llvm-svn: 101450
This commit is contained in:
Douglas Gregor
2010-04-16 06:31:05 +00:00
parent 408f79197c
commit d2b896ab69
2 changed files with 27 additions and 5 deletions
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26
clang/lib/Frontend/InitPreprocessor.cpp
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@@ -294,8 +294,30 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
// C++ translation unit.
Builder.defineMacro("__cplusplus", "199711L");
Builder.defineMacro("__private_extern__", "extern");
// Ugly hack to work with GNU libstdc++.
Builder.defineMacro("_GNU_SOURCE");
// 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) {