--- configure.orig	2012-01-19 06:30:12 UTC
+++ configure
@@ -2039,12 +2039,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 ac_config_headers="$ac_config_headers include/SDL_config.h"
 
-
-cat >>confdefs.h <<\_ACEOF
-#define _GNU_SOURCE 1
-_ACEOF
-
-
 ac_aux_dir=
 for ac_dir in $srcdir/build-scripts; do
   if test -f "$ac_dir/install-sh"; then
@@ -15826,7 +15820,7 @@ case "$host" in
         BASE_LDFLAGS="-mno-cygwin"
         ;;
     *)
-        BASE_CFLAGS="-D_GNU_SOURCE=1"
+        BASE_CFLAGS=""
         BASE_LDFLAGS=""
         ;;
 esac
@@ -20999,6 +20993,16 @@
         fi
     fi
 }
+ 
+CheckSndio()
+{
+if test "x${enable_sndio}" = "xyes"; then :
+  SOURCES="$SOURCES $srcdir/src/audio/sndio/SDL_sndioaudio.c"
+  EXTRA_CFLAGS="$EXTRA_CFLAGS -DSDL_AUDIO_DRIVER_SNDIO=1"
+  EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lsndio"
+  have_audio=yes
+fi
+}
 
 CheckPulseAudio()
 {
@@ -29551,6 +29555,7 @@
         CheckALSA
         CheckARTSC
         CheckESD
+        CheckSndio
         CheckPulseAudio
         CheckNAS
         CheckX11