critical floating point incompatibility

[Peter Jeremy]

On 2009-Jan-28 11:24:21 -0800, Bakul Shah <bakul at bitblocks.com> wrote:
>On a mac, cc -m64 builds 64 bit binaries and cc -m32 builds
>32 bit binaries.  The following script makes it as easy to do
>so on a 64 bit FreeBSD -- at least on the few programs I
>tried.  Ideally the right magic needs to be folded in gcc's
>builtin "specs".
>
>#!/bin/sh
>args=/usr/bin/cc
>while [ ".$1" != . ]
>do
>    a=$1; shift
>    case $a in
>    -m32) args="$args -B/usr/lib32 -I/usr/include32 -m32";;
>    *) args="$args $a";;
>    esac
>done
>$args

You also need to manually populate /usr/include32 since it doesn't
exist by default and may still get bitten by stuff in
/usr/local/include.  Do you have a script (or installworld patches) to
do this?

amd64/112215 includes a first attempt at updating the gcc specs
(though it's missing the include handling), as well as some of
the remaining problems.

>Ideally x86_64 platforms run *all* i386 programs (that don't
>depend on a 32 bit kernel).

Agreed.

-- 
Peter Jeremy
Please excuse any delays as the result of my ISP's inability to implement
an MTA that is either RFC2821-compliant or matches their claimed behaviour.
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