[libcxx] GNU/Hurd uses BSD-based interfaces, but does not (and won't) provide <sys...

Reviewed as https://reviews.llvm.org/D54338.

Thanks to sthibaul for the patch.

llvm-svn: 346763

diff --git a/libcxx/src/thread.cpp b/libcxx/src/thread.cpp
index 550da8ea71f313234defae8a514eeeb0c0058cec..241cfee23c5be04d57ffddda0831d70755e493cc 100644 (file)
--- a/libcxx/src/thread.cpp
+++ b/libcxx/src/thread.cpp
@@ -19,9 +19,9 @@
 
 #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
 # include <sys/param.h>
-# if defined(BSD)
+# if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(__APPLE__)
 #   include <sys/sysctl.h>
-# endif // defined(BSD)
+# endif
 #endif // defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
 
 #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__CloudABI__) || defined(__Fuchsia__)