Re: Building only util

[Darren Hart]

On 11/25/2011 11:01 AM, Jordan Uggla wrote:
> On Wed, Nov 23, 2011 at 12:13 AM, Darren Hart <address@hidden> wrote:
>> Is there a way to build only the util directory?
>>
>> There is a long story behind why I think this might be a good idea. It
>> has to do with packaging and cross compilation environments. I need to
>> build grub-mkimage for my build arch in order to assemble final efi
>> images, like bootia32.efi, but I also want to build everything for the
>> target arch for deployment.
>>
>> "make util/grub-mkimage" made a rather feeble attempt, but failed.
>>
>> Thanks,
>>
>> --
>> Darren Hart
>> Intel Open Source Technology Center
>> Yocto Project - Linux Kernel
>>
>> _______________________________________________
>> Help-grub mailing list
>> address@hidden
>> https://lists.gnu.org/mailman/listinfo/help-grub
>>
> 
> It sounds like you're trying to build the utilities for a different
> architecture (the "host" architecture) than the "target" architecture.
> Grub is designed to handle this without any manual workarounds like
> you seem to be trying to do. You didn't specify your host and target
> architecture but if you wanted to build utilities for a PowerPC host
> to install grub to be booted from an x86 PC, you would build grub by
> running ./configure like this (thanks to phcoder for this example):
> ./configure CC=powerpc-linux-gcc  --host=ppc-linux-gnu --target=i386
> --with-platform=pc TARGET_CC=i386-linux-gcc

Thanks for the pointer. I've updated my build environment to do just
this. The compile log shows it using the host compiler to build the
binaries and the cross-compiler to build the grub modules.
unfortunately, grub-mkimage then segfaults shortly after performing the
the ELF check on kernel.img (from a brief look at an strace).

If I use my host compiler for both the HOST and the TARGET (host is
x86_64 and target is i386), then grub-mkimage works. However, if I use
the cross compiler to build the grub modules, and I use my distribution
installed grub-mkimage (instead of the one I build) things also work.
I'm currently a bit baffled at where the problem might be.

I'm continuing to look into it, but if this rings any bells, please share.

Thanks,

-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel