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Date: Tue, 2 Jun 2009 21:43:20 -0700
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: David Xu <davidxu@freebsd.org>
Message-ID: <20090603044320.GA35526@troutmask.apl.washington.edu>
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Cc: freebsd-amd64@freebsd.org
Subject: Re: gcc -m32 and int64_t
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On Wed, Jun 03, 2009 at 11:50:53AM +0800, David Xu wrote:
> It seems there is a problem in /sys/am64/_types.h when cross-compiling a
> 32-bit code in amd64 machine, the following code prints 4 instead of 8:
> 
> /* int64_size.c */
> 
> #include <sys/types.h>
> #include <stdio.h>
> 
> int main()
> {
>     printf("%d\n", sizeof(int64_t));
>     return (0);
> }
> 
> 
> $cc -m32 -o int64_size -B /usr/lib32/ int64_size.c
> $./int64_size
> 4
> 

IIRC, the c compiler in the base system isn't setup 
to be a cross-compiler.  So, there are probably many
more problems than the one shown above.  Peter Wemm
has posted about this previously.

-- 
Steve