[OE-core] [PATCH] matchbox-keyboard: Fix build failure with ld-is-gold

[Khem Raj]

> On Sep 11, 2015, at 7:51 AM, Phil Blundell <pb at pbcl.net> wrote:
> 
> On Fri, 2015-09-11 at 14:49 +0200, Carlos Alberto Lopez Perez wrote:
>>  * When ld-is-gold is enabled in DISTRO_FEATURES, matchbox-keyboard
>>    will fail to build with this error:
>> 
>>    ld: error: matchbox-keyboard-image.o: requires unsupported dynamic
>>               reloc R_ARM_MOVW_ABS_NC; recompile with -fPIC
> 
> This is only an issue for ARM (and only for Thumb2 at that).  I don't
> think it's necessarily appropriate to force -fPIC on all targets.
> 
> Also, before adding this sort of hack it would be worth verifying
> whether this is in fact a toolchain bug and, if it is, fixing it there.
> 

This may not be a toolchain bug if there is a MOVW_ABS relocation being emitted
into an object that is eventually linked into shared library. Using -fPIC seems to be right fix
I know bfd linker silently ignored these relocations and generated bad .so files but that was fixed
several years ago. So I think what needs to be looked at is why does same .o links ok with bfd linker
is it some linker trampoline code thats in question here which may be different between gold and ld

Carlos

Can you check the linker cmdline of failing link step and see if its generating a shared object there ?
if thats the case and I assume gcc is generating this relocation into both