[Buildroot] Missing 'sys/queue.h' on musl

[Arnout Vandecappelle]

On 30-11-15 17:32, Thomas Petazzoni wrote:
> Dear Sergio Prado,
> 
> On Mon, 30 Nov 2015 13:07:36 -0200, Sergio Prado wrote:
> 
>> I have created a package called sys-queue that will only install queue.h on
>> the staging dir.
>>
>> Then to make musl generated toolchain depends on sys-queue, I added the
>> following lines to toolchain/toolchain-buildroot/toolchain-buildroot.mk:
>>
>> ifeq ($(BR2_TOOLCHAIN_BUILDROOT_MUSL),y)
>> TOOLCHAIN_BUILDROOT_DEPENDENCIES += sys-queue
>> endif
>>
>> It worked like a charm. Is this the correct approach?
> 
> No, because this will only work for internal toolchains. So instead,
> you need to put this dependency in two places:

 That's what Sergio was doing...

> 
>  1/ In package/musl/musl.mk, where it should be an unconditional
>     dependency.
> 
>  2/ In toolchain/toolchain-external/toolchain-external.mk, where it
>     should be conditional on BR2_TOOLCHAIN_USES_MUSL.
> 
>> Also, I am struggling to find out a way to do the same thing on the
>> external toolchain. Using the DEPENDENCIES approach, it will process the
>> sys-queue package before the external toolchain package, and it is best to
>> do it after. Any ideas?
> 
> Is it really a problem if it is processed before?

 It's actually good if it is processed before, so if there is a queue.h in the
external toolchain after all (e.g. for a buildroot-built external toolchain), it
will overwrite ours. At least, I think that that is what we want.

 Regards,
 Arnout

> 
> Thomas
> 


-- 
Arnout Vandecappelle                          arnout at mind be
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