Allow libc++ to be built on systems without POSIX threads If you're crazy enough to want this sort of thing, then add -D_LIBCPP_HAS_NO_THREADS to your CXXFLAGS and --param=additiona_features=libcpp-has-no-threads to your lit commnad line. http://reviews.llvm.org/D3969 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@217271 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/condition_variable b/include/condition_variable index dc67266..1af2484 100644 --- a/include/condition_variable +++ b/include/condition_variable 
@@ -115,6 +115,8 @@  #pragma GCC system_header  #endif   +#ifndef _LIBCPP_HAS_NO_THREADS +  _LIBCPP_BEGIN_NAMESPACE_STD    class _LIBCPP_TYPE_VIS condition_variable_any @@ -253,4 +255,6 @@    _LIBCPP_END_NAMESPACE_STD   +#endif // !_LIBCPP_HAS_NO_THREADS +  #endif // _LIBCPP_CONDITION_VARIABLE