It might be worth checking for each port whether this non-program compiles: #include <sys/user.h> #include <sys/ptrace.h> I have sent in a patch to fix it for ppc, but there might be problems on alpha, arm, m68k, and mips. To fix, you need to write a <sys/user.h> that does not include <linux/ptrace.h>. -- Geoffrey Keating <geoffk@ozemail.com.au>