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List:       openembedded-core
Subject:    Re: [OE-core] [PATCH] glibc: Avoid multilibbing on wordsize.h
From:       ChenQi <Qi.Chen () windriver ! com>
Date:       2018-07-31 1:57:36
Message-ID: e6cdc11a-c949-df7b-0b41-806fdcc74689 () windriver ! com
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This patch causes a regression in multilib SDK for qemuarm64.

Error: Transaction check error:
   file /usr/include/bits/wordsize.h conflicts between attempted installs of \
lib32-libc6-dev-2.27-r0.armv7vet2hf_vfp and libc6-dev-2.27-r0.aarch64

Please consider sending a follow-up patch to fix this regression.

Best Regards,
Chen Qi

On 07/26/2018 02:35 AM, Daniel Díaz wrote:
> Once another header #includes <bits/wordsize.h>, there is a
> potential recursion going on because the
> multilib_header_wrapper.h #includes <bits/wordsize.h> again!
> 
> This should not happen because an __arm__ (32-bits) or an
> __aarch64__ (64-bits) environment guarantees that we will
> be getting the correct definition, but when building against
> a different target (like BPF), recursion is what happens.
> 
> This can be seen, for instance, when building eBPF programs
> from the kernel with `clang -target bpf', such as the ones
> located in linux/tools/testing/selftests/bpf/.
> 
> Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
> Signed-off-by: Aníbal Limón <anibal.limon@linaro.org>
> ---
> meta/recipes-core/glibc/glibc-package.inc | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/meta/recipes-core/glibc/glibc-package.inc \
> b/meta/recipes-core/glibc/glibc-package.inc index ae3f2f6..a4f61f8 100644
> --- a/meta/recipes-core/glibc/glibc-package.inc
> +++ b/meta/recipes-core/glibc/glibc-package.inc
> @@ -136,8 +136,7 @@ do_install_append_armeb () {
> }
> 
> do_install_armmultilib () {
> -
> -	oe_multilib_header bits/endian.h bits/fcntl.h bits/fenv.h bits/fp-fast.h \
> bits/hwcap.h bits/ipc.h bits/link.h bits/wordsize.h +	oe_multilib_header \
> bits/endian.h bits/fcntl.h bits/fenv.h bits/fp-fast.h bits/hwcap.h bits/ipc.h \
> bits/link.h  oe_multilib_header bits/local_lim.h bits/mman.h bits/msq.h \
> bits/pthreadtypes.h bits/pthreadtypes-arch.h  bits/sem.h  bits/semaphore.h \
> bits/setjmp.h  oe_multilib_header bits/shm.h bits/sigstack.h bits/stat.h \
> bits/statfs.h bits/typesizes.h 


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