tree bbfc7a1854f38416beb31d2503d3697097dd40f5
parent 57cfbea68c7ed3369192690ee154d69da5ee4d50
author David Benjamin <davidben@google.com> 1486159658 -0500
committer David Benjamin <davidben@google.com> 1486160289 -0500

Guard the _GNU_SOURCE #define.

It is hard to control what flags consumers may try to build us with.
Account for someone adding _GNU_SOURCE to the build line.

Change-Id: I4c931da70a9dccc89382ce9100c228c29d28d4bf
Reviewed-on: https://boringssl-review.googlesource.com/13621
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
(cherry picked from commit e025f3050761b0f737a3f7b53e6a56b07f7bcb9a)