configure: Use AC_GNU_SOURCE

[petitboot] / ui / ncurses / generic-main.c

diff --git a/ui/ncurses/generic-main.c b/ui/ncurses/generic-main.c
index feff506cd67e8d8e1c36e45a03c10b60a213bca9..aa5c2a59093bf669290e47b447bcd24135057883 100644 (file)
--- a/ui/ncurses/generic-main.c
+++ b/ui/ncurses/generic-main.c
@@ -18,9 +18,9 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#if defined(HAVE_CONFIG_H)
 #include "config.h"
-
-#define _GNU_SOURCE
+#endif
 
 #include <assert.h>
 #include <errno.h>