[PATCH][RFC] strace fails to compile on glibc-2.5/MIPS

[Hiroki Kaminaga]

Hi,

From: Roland McGrath <roland at redhat.com>
Subject: Re: [PATCH][RFC] strace fails to compile on glibc-2.5/MIPS
Date: Thu,  5 Jul 2007 12:08:08 -0700 (PDT)
> 
> I put in a change with a configure check that should handle either version.
> 

I've checked out your change in configure.ac and signal.c.

---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 
        * configure.ac: Check for struct sigcontext.sc_hi2.
        * signal.c (sys_sigreturn) [MIPS]: Use sc_hi2 vs sc_sigset if found.
---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 

However, I met below problem:
configure does not recognize sc_hi2
...
checking for struct sigcontext.sc_hi2... no
...

This was because of failure to test sc_hi2 in conftest.c.
Cause was that bits/sigcontext.h, included by signal.h and asm/sigcontext.h
both defines struct sigcontext, thus compile fails as multiple definition.
bits/sigcontext.h was provided by glibc, whereas asm/sigcontext.h was
provided by kernel header.

I think this should do:
remove #include <asm/sigcontext.h> from AC_CHECK_MEMBERS([struct
sigcontext.sc_hi2] in configure.ac

Also, could you give me generated configure script?

Best Regards,

(Hiroki Kaminaga)
t
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