[libc++] Remove _LIBCPP_BUILDING_XXX macros, which are redundant since _LIBCPP_BUILDING_LIBRARY
Summary: As suggested by Marshall in https://reviews.llvm.org/D49914
Reviewers: mclow.lists, EricWF
Subscribers: christof, dexonsmith, cfe-commits
Differential Revision: https://reviews.llvm.org/D50008
llvm-svn: 338475
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: c8e84ff25115ed0da2d6e3a81eac40712b467258
diff --git a/include/shared_mutex b/include/shared_mutex
index 9cb8152..a7735d6 100644
--- a/include/shared_mutex
+++ b/include/shared_mutex
@@ -129,7 +129,7 @@
#include <__undef_macros>
-#if _LIBCPP_STD_VER > 11 || defined(_LIBCPP_BUILDING_SHARED_MUTEX)
+#if _LIBCPP_STD_VER > 11 || defined(_LIBCPP_BUILDING_LIBRARY)
#include <__mutex_base>