[libcxx] Whitelist inclusion of sysctl.h instead of blacklisting
Instead of excluding all known operating systems that are not derived from BSD,
I now include all operating systems that claim to be derived from BSD.
Hopefully, that will make it so that this check doesn't need to change for
every new operating system that comes along.
http://reviews.llvm.org/D16634
llvm-svn: 259193
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 7d00f97048a1681586cfdcd66307ebf86a4bb1ab
diff --git a/src/thread.cpp b/src/thread.cpp
index bd27f28..2243a34 100644
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -16,10 +16,15 @@
#include "future"
#include "limits"
#include <sys/types.h>
-#if !defined(_WIN32)
-# if !defined(__sun__) && !defined(__linux__) && !defined(_AIX) && !defined(__native_client__) && !defined(__CloudABI__)
+
+#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
+# include <sys/param.h>
+# if defined(BSD)
# include <sys/sysctl.h>
-# endif // !defined(__sun__) && !defined(__linux__) && !defined(_AIX) && !defined(__native_client__) && !defined(__CloudABI__)
+# endif // defined(BSD)
+#endif // defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
+
+#if !defined(_WIN32)
# include <unistd.h>
#endif // !_WIN32