From 9d7b5b776a91676697f8c44c5efc08aa2fd1c9fd Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Mon, 23 Mar 2015 20:11:18 -0400
Subject: [PATCH] SDL-1.2: Reenable _GNU_SOURCE define for Linux. Apparently it
 broke things.

---
 configure.in | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure.in b/configure.in
index b75fae20f..8acc37ce9 100644
--- a/configure.in
+++ b/configure.in
@@ -1,6 +1,7 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(README)
 AC_CONFIG_HEADER(include/SDL_config.h)
+AC_GNU_SOURCE
 AC_CONFIG_AUX_DIRS($srcdir/build-scripts)
 
 dnl Set various version strings - taken gratefully from the GTk sources
@@ -77,7 +78,7 @@ case "$host" in
         BASE_LDFLAGS="-mno-cygwin"
         ;;
     *)
-        BASE_CFLAGS=""
+        BASE_CFLAGS="-D_GNU_SOURCE=1"
         BASE_LDFLAGS=""
         ;;
 esac