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Date: Wed, 24 Oct 2007 17:05:35 -0400
From: "Josh Carroll" <josh.carroll@gmail.com>
To: "Aryeh M. Friedman" <aryeh.friedman@gmail.com>
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References: <471FAFD4.5090500@gmail.com>
Cc: freebsd-questions@freebsd.org
Subject: Re: forcing compilation/run time linking of lib32 on amd64
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> I am writing some demo code (for teaching C) and need to have the same
> program run on a 32 bit machine and a 64 bit machine (showing that int's
> are always word length)... I have 8-current amd64 how do I force it to
> compile with 32 bit words?

Add the following to your gcc command line:

-m32 -B/usr/lib32 -L/usr/lib32

Regards,
Josh