tree fa1c4b4f6d68326e014e278d79a7b8a4432b45da
parent 6016eec1916bb5d5fa54dc6036c56e967d58b2cc
author Petr Hosek <phosek@google.com> 1597896998 -0700
committer CQ Bot <commit-bot@chromium.org> 1598586006 +0000

Only define _XOPEN_SOURCE on Linux

This breaks the build on recent versions of macOS. Defining
_XOPEN_SOURCE is not necessary to access pthread_rwlock_t. Worse,
defining it makes __DARWIN_C_LEVEL equal to _POSIX_C_SOURCE, which
disables access to functions like timespec_get and aligned_alloc
on macOS 10.15 and newer, which are now used by libc++.

Change-Id: I5098dae8288bdb4a4ca912b35110240f35fbf69f
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/boringssl/+/419139
Reviewed-by: Roland McGrath <mcgrathr@google.com>
Commit-Queue: Petr Hosek <phosek@google.com>