configure: Use AC_GNU_SOURCE

[petitboot] / discover / pxe-parser.c

diff --git a/discover/pxe-parser.c b/discover/pxe-parser.c
index 811679dd2a95f7c9478e0f560b72ef25c61dbc08..2fc261ba9a9089bf3a7841bf10077842829d2acc 100644 (file)
--- a/discover/pxe-parser.c
+++ b/discover/pxe-parser.c
@@ -1,5 +1,7 @@
 
-#define _GNU_SOURCE
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
 #include <string.h>
 
 #include <talloc/talloc.h>