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Date: Mon, 4 Oct 2010 14:37:12 -0700
Message-ID: <AANLkTintm_XubwCCRNJci99Y4M6nwbFr=oiKqBw2+a9M@mail.gmail.com>
From: David Brodbeck <gull@gull.us>
To: spellberg_robert <emailrob@emailrob.com>
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Cc: fbsd_questions <freebsd-questions@freebsd.org>
Subject: Re: [fbsd_questions] i386 vs amd64, on intel_64
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On Mon, Oct 4, 2010 at 12:51 PM, spellberg_robert <emailrob@emailrob.com> w=
rote:
> =A0q: =A0 =A0if i install an "amd64" version on an "intel_64" platform,
> =A0 =A0 =A0 =A0 =A0am i restricted to 16 64_bit registers and 48_bit poin=
ters or
> =A0 =A0 =A0 =A0 =A0can i compile for both cpu_models
> =A0 =A0 =A0 =A0 =A0[ perhaps, with nothing more complicated than a compil=
er option ] ?

Take a look at gcc's -m32 and -m64 options.