Richard Purdie wrote:
> On Sat, 2019-01-12 at 12:11 +0200, Serhey Popovych wrote:
>> In Ubuntu 16.04 LTS userspace is build for PowerPC 32-bit while
>> kernel
>> selected by the installer depending on PowerPC machine type:
>>
>> * 32-bit for PowerMac G4 (ppc7400) and below
>> * 64-bit for PowerMac G5 and above
>>
>> Thus uname(2) returns ppc64 for 64-bit kernels and 32-bit userspace
>> making build impossible due to missing some of lib64 multilib
>> equivalents in Ubuntu repository.
>>
>> Using setarch(8) override to make whole host look as PowerPC 32-bit
>> can actually help with build but requires mapping for ppc target to
>> their libgpg-error equivalent to fix native build.
>>
>> Build tested on Ubuntu 16.04 LTS host on PowerMac G5 with command:
>>
>> MACHINE=qemuppc setarch ppc bitbake core-image-full-cmdline
>>
>> Signed-off-by: Serhey Popovych <serhe.popov...@gmail.com>
>> ---
>> meta/recipes-support/libgpg-error/libgpg-error_1.33.bb | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/meta/recipes-support/libgpg-error/libgpg-error_1.33.bb
>> b/meta/recipes-support/libgpg-error/libgpg-error_1.33.bb
>> index 325529d..4153954 100644
>> --- a/meta/recipes-support/libgpg-error/libgpg-error_1.33.bb
>> +++ b/meta/recipes-support/libgpg-error/libgpg-error_1.33.bb
>> @@ -47,6 +47,7 @@ do_compile_prepend() {
>> mips*el) TUPLE=mipsel-unknown-linux-gnu ;;
>> mips*) TUPLE=mips-unknown-linux-gnu ;;
>> x86_64) TUPLE=x86_64-unknown-linux-gnu ;;
>> + ppc) TUPLE=powerpc-unknown-linux-gnu ;;
>> ppc64) TUPLE=powerpc64-unknown-linux-gnu ;;
>> ppc64le) TUPLE=powerpc64le-unknown-linux-gnu ;;
>> *) TUPLE=${TARGET_ARCH}-unknown-linux-gnu ;;
>
> This doesn't feel correct. It only works if you're using the local
> setarch workaround and I'm worried most users are never going to find
> that.
>
> I'm fine with adding in general fixes but this is getting very specific
> to an very uncommon usecase :(
Understand your position. Doing setarch(8) to run bitbake on ppc64
kernel with 32-bit user space with missing 64-bit multilib seems to
be the only option.
Anyway this change just maps ppc to corresponding tuple used by
libgpg-error, so with this fix we hit both
a) setarch(1) when kernel is 64-bit and userspace is 32-bit and
no multilib
b) native 32-bit powerpc host that is running as virtual machine for
example).
>
> Cheers,
>
> Richard
>
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