[PATCH] D79305: chrono: check _POSIX_TIMERS before using clock_gettime

[Mara Sophie Grosch via Phabricator via llvm-commits]

LittleFox94 created this revision.
LittleFox94 added projects: LLVM, libc++.
Herald added a subscriber: libcxx-commits.
Herald added a reviewer: libc++.

clock_gettime is documented to be available when _POSIX_TIMERS is defined. Add a check for this


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D79305

Files:
  libcxx/src/chrono.cpp


Index: libcxx/src/chrono.cpp
===================================================================
--- libcxx/src/chrono.cpp
+++ libcxx/src/chrono.cpp
@@ -12,9 +12,9 @@
 #include <time.h>        // clock_gettime, CLOCK_MONOTONIC and CLOCK_REALTIME
 #include "include/apple_availability.h"
 
-#if !defined(__APPLE__)
+#if !defined(__APPLE__) && defined(_POSIX_TIMERS)
 #define _LIBCPP_USE_CLOCK_GETTIME
-#endif // __APPLE__
+#endif // !__APPLE__ && _POSIX_TIMERS
 
 #if defined(_LIBCPP_WIN32API)
 #define WIN32_LEAN_AND_MEAN


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