Mesa (master): configure: Define _GNU_SOURCE for Cygwin as well

[Jon TURNEY]

Module: Mesa
Branch: master
Commit: 3c18c16ecf95198b88ff1049ea6c238f7f7436bd
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3c18c16ecf95198b88ff1049ea6c238f7f7436bd

Author: Yaakov Selkowitz <yselkowi at redhat.com>
Date:   Tue Jun  7 18:09:07 2016 +0000

configure: Define _GNU_SOURCE for Cygwin as well

Cygwin headers are now a bit more correct in handling feature test macros,
so use _GNU_SOURCE when building for Cygwin, as well.

(Notwithstanding f381c27c, we should probably have always been using
_GNU_SOURCE, since asprintf() is used by mesa in places)

Signed-off-by: Yaakov Selkowitz <yselkowi at redhat.com>
Reviewed-by: Jon Turney <jon.turney at dronecode.org.uk>

---

 configure.ac | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index a4074ed..c1de4d8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -254,15 +254,12 @@ case "$host_os" in
 *-android)
     android=yes
     ;;
-linux*|*-gnu*|gnu*)
+linux*|*-gnu*|gnu*|cygwin*)
     DEFINES="$DEFINES -D_GNU_SOURCE"
     ;;
 solaris*)
     DEFINES="$DEFINES -DSVR4"
     ;;
-cygwin*)
-    DEFINES="$DEFINES -D_XOPEN_SOURCE=700"
-    ;;
 esac
 
 AM_CONDITIONAL(HAVE_ANDROID, test "x$android" = xyes)