diff -ruw src.orig//include/libbb.h src/include/libbb.h
--- src.orig//include/libbb.h	2012-08-30 15:39:56.805183326 +0200
+++ src/include/libbb.h	2012-08-30 15:40:18.809176396 +0200
@@ -28,6 +28,7 @@
 #include <sys/poll.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>
+#include <sys/resource.h>
 #include <sys/socket.h>
 #if defined __FreeBSD__
 # include <netinet/in.h>