Re: [Qemu-devel] [PATCH] host-pcc: enable building with -m32 or -m64

[malc]

On Thu, 26 May 2011, Stefan Berger wrote:

> On 05/26/2011 04:20 PM, Andreas F?rber wrote:
> > Am 26.05.2011 um 21:00 schrieb Stefan Berger:
> > 
> > > With the below patch I can build either ppc (-m32) or ppc64 (-m64)
> > > versions of Qemu (on a ppc64 host) when passing these compiler flags via
> > > 'configure ... --extra-cflags="-m32"'.
> > 
> > You probably meant "without passing"?
> > 
> > Nack. Please don't hardcode -mXX in configure, it's -arch ppc vs. -arch
> > ppc64 on my host/gcc. What's wrong with passing --extra-cflags?
> > 
> I posted the following patch today for compiling libcacard with -m32 on a 64
> bit machine.
> 
> http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg02909.html
> 
> It adds LDFLAGS. This works fine on x86-64. Then trying this out on ppc64 with
> -m32 in extra-cflags I find the following in config-host.mak
> 
> [...]
> HELPER_CFLAGS=
> LDFLAGS=-Wl,--warn-common -g
> ARLIBS_BEGIN=
> [...]
> 
> The -m32 doesn't make it into LDFLAGS. The below patch fixed it for me
> following the pattern of x86-64 and i686 a bit further up in the case
> statement in configure.

[..snip..]

You can just do `./configure --cc="gcc -m[32|64]"'

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