Re: About 32bit binary on amd64

On Mon, May 24, 2010 at 06:58:56PM +0900, Kohji Okuno wrote:
Thank you for your comments.

In my usage, it works good by the patch appended to this mail.
The patch is probably a start in the right direction. But, it would be
much better to install sys/i386/include to e.g. /usr/include/machine32
and use the pristine i386 files instead of copying them.

Are you interested in going further with the approach ?

Thanks.

On May 24, 2010, at 2:49 AM, pluknet wrote:

On 24 May 2010 08:49, Kohji Okuno <okuno.kohji@xxxxxxxxxxxxxxxx> wrote:
Hi all,

I want to compile 32bit binary on amd64, but I met with the problem.
Could you teach me the best solution, please?


My environment is FreeBSD 8.1-PRERELEASE #0: Tue May 18 12:01:26 JST 2010.

I compiled and executed test.c as below on amd64.

[...]

% gcc -m32 -B/usr/lib32 test.c
% ./a.out
mmap: Invalid argument

AFAIK, it still doesn't work on FreeBSD. You need something like 32bit
chroot environment.
There's also about:
http://www.freebsd.org/projects/ideas/#p-freebsd-amd64-gcc-m32

-m32 is busted on FreeBSD; I don't remember the full details but I think it had something to do with the linking stage of things...
Thanks,
-Garrett


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