#include <setjmp.h>
#include "busybox.h"
-/* Stupid libc doesn't have a reliable way for use to know
- * that libc5 is being used. Assume this is good enough */
-#if ! defined __GLIBC__ && ! defined __UCLIBC__
+#if __GNU_LIBRARY__ < 5
#error Sorry. Looks like you are using libc5.
#error libc5 shm support isnt good enough.
#error Please disable BB_FEATURE_IPC_SYSLOG