--- a/init/Makefile	2010-12-10 17:41:02.500954176 +0100
+++ b/init/Makefile	2010-12-10 17:40:09.860954404 +0100
@@ -1,3 +1,4 @@
 OBJS=init mkdev
 include ../include/rules.make
+CFLAGS+=-D_GNU_SOURCE
 CFLAGS+=-fomit-frame-pointer -mno-omit-leaf-frame-pointer -Wl,--gc-sections