Re: [PATCH v3] Introduce multiarch DISTRO_FEATURE

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Mon, 2011-11-28 at 21:32 +0000, McClintock Matthew-B29882 wrote:
> On Fri, Nov 25, 2011 at 5:40 PM, Richard Purdie
> > What specific problem are you trying to solve?
> 
> The specific issue I'm having is for our 64-bit part that still uses a
> 32-bit u-boot. Not sure the best approach really is...

Hmm, does it really need libgcc?

> I've tried utilizing multilib by adding the following to my u-boot
> recipe, but it's just hacky...
> 
> DEPENDS_e5500-64b_append = " lib32-gcc"
> CC_e5500-64b = "powerpc-poky-linux-gcc -m32"
> 
> I'd rather NOT recompile gcc/eglibc/etc just for this 32-bit build of
> u-boot where we don't need libc. I'd rather just have a functional
> 32bit/64bit compiler for our 64-bit target.

The trouble is that you need glibc-intermediate to build gcc-cross
(which builds a functional libgcc). You therefore can't short circuit
this as much as you think :/.

> Looking forward farther, I would like to have one toolchain
> ("meta-toolchain") that can produce target code for multiple targets
> also.

This is easier since we would just add lib32-gcc and lib-gcc to the
sysroot. It then becomes a case of just ensuring gcc is configured
correctly.

Cheers,

Richard