Re: [PATCH] Introduce biarch DISTRO_FEATURE

[Julian Pidancet <julian.pidancet@gmail.com>]

On 11/08/11 20:29, Richard Purdie wrote:
> 
> I'm left wondering how useful the resulting compiler is to most users.
> In most cases a user would expect full libc support and hence this is
> likely to confuse them. I do appreciate people do have usecases for a
> compiler that can handle the other bit format though.
> 

Standard linux distros out there like debian or gentoo already ship a
biarch gcc per default. It wouldn't seem odd to me if OE had an option
to enable the generation of a biarch compiler.

> I think my biggest worry is the "--enable-targets=all" option which may
> or may not enable things we might not want enabled. I've not had a
> chance to go and look at gcc and convince myself that piece is safe. The
> other pieces looked less worrying.
> 

In the patch, the --enable-targets=all is only active in the x86 case. I
did not find any other way of enabling both -m32 and -m64 switches in gcc.

I've been successfully using this patch to generate a complete x86 32bit
distro with a 64bit Xen hypervisor (I believe the result would have been
the same if I tried to compile a 64bit linux kernel). I did not have any
issues with it so far.

Cheers,

-- 
Julian