--- hurd-19980716/libshouldbeinlibc/argp-help.c~	Wed Jun 18 16:29:05 1997
+++ hurd-19980716/libshouldbeinlibc/argp-help.c	Fri Jul 24 15:54:29 1998
@@ -18,6 +18,8 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#define _GNU_SOURCE 1
+
 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif