Re: [Sbcl-devel] A microoptimisation of bignum subtraction on x86/x86-64

[Brian M. <br...@ma...>]

On Oct 16, 2005, at 9:44 AM, Lutz Euler wrote:

> A question: I would like to test this (and other) changes to the x86
> port on my x86-64 machine. Is there a way to build a 32-bit version of
> SBCL in this environment?
>
> Here is what I tried so far (under version 0.8.21.7):
>
> Somewhere in the CVS logs I found a hint to use "SBCL_ARCH=x86", which
> proved to be insufficient. I added "CC='gcc -m32'":
>
> CC='gcc -m32' SBCL_ARCH=x86 sh make.sh
>
> This built an SBCL that would run, but it only built 10 out of 14
> contribs. A quick investigation showed that "alien.so" had been built
> as a 64-bit library and thus could not be linked with the 32-bit
> executable.

Right. You might try changing your PATH so that gcc points to a shell  
script which invokes your real gcc with -m32 instead of -m64.

Also, 0.8.21.7 is very old. You might want to try a much newer SBCL.
--
Brian Mastenbrook
br...@ma...
http://brian.mastenbrook.net/