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Date: Fri, 30 Jul 2010 00:27:16 +0200
From: Nathan Whitehorn <nwhitehorn@freebsd.org>
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To: Tijl Coosemans <tijl@coosemans.org>
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Cc: pluknet <pluknet@gmail.com>, freebsd-arch@freebsd.org
Subject: Re: Support for cc -m32
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On 07/29/10 17:18, Tijl Coosemans wrote:
> Hi,
>
> I've put the initial version of some patches online to support cross
> compilation of 32 bit binaries on amd64. It's modelled after how NetBSD
> does this.
>
> With these patches something like "cc -m32 -o test test.c -pthread -lm"
> generates a program that runs on FreeBSD/i386.
>
> http://people.freebsd.org/~tijl/cc-m32-1.diff
> http://people.freebsd.org/~tijl/cc-m32-2.diff
> http://people.freebsd.org/~tijl/cc-m32-3.diff
>
> *cc-m32-1.diff* : Let ld and cc find 32 bit libraries.
>
> *cc-m32-2.diff* : Install i386 headers on amd64.
>    
Why not use the GCC multilib code for what patch 1 does? There is 
already code in cc_tools/Makefile to handle this for powerpc64 (where cc 
-m32 already works).
-Nathan