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Re: check-textrel
On Mon, Feb 10, 2003 at 08:36:41PM -0800, Ulrich Drepper wrote:
> Alan Modra wrote:
> > This test breaks when cross-compiling powerpc64-linux glibc from
> > a powerpc-linux host. Problem is that e_phoff is 64 bits while
> > pread expects a 32-bit offset.
>
> That's no problem. The compiler truncates the 64 bit value. If it
> doesn't it's a compiler bug. SO what is it?
Errm, true. It does look like a compiler bug.
> And what about this:
>
> +#define _XOPEN_SOURCE 500
> +#define _BSD_SOURCE 1
That's to get the pread prototype.
$ gcc -O -Wall -include ../config.h /src/libc-current/elf/check-textrel.c -o zzz
In file included from /src/libc-current/elf/check-textrel.c:125:
/src/libc-current/elf/check-textrel.c: In function `handle_file32':
/src/libc-current/elf/check-textrel.c:62: warning: implicit declaration of function `pread'
/src/libc-current/elf/check-textrel.c:69: warning: suggest parentheses around && within ||
[snip]
>
> That's completely unnecessary. All of glibc is compiled with
> _GNU_SOURCE defined.
Not this file. The above gcc command line, with the exception of -Wall
and -o was taken from my "make check" log.
--
Alan Modra
IBM OzLabs - Linux Technology Centre