From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Seiderer <ps.report@gmx.net>
Date: Tue, 4 Oct 2016 21:46:05 +0200
Subject: [Buildroot] [PATCH v1] assimp: fix pthread linking
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On Sun, 25 Sep 2016 23:33:42 +0200, Peter Seiderer <ps.report@gmx.net> wrote:

> Fixes [1]:
> 
>   [100%] Linking CXX executable ../../bin/assimp
>   /home/test/autobuild/run/instance-2/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-uclinux-uclibcgnueabi/5.4.0/../../../../arm-buildroot-uclinux-uclibcgnueabi/lib/libstdc++.a(guard.o): In function `(anonymous namespace)::get_static_cond()':
>   guard.cc:(.text._ZN12_GLOBAL__N_115get_static_condEv+0x6): undefined reference to `pthread_once'
>   ...
> 
> [1] http://autobuild.buildroot.net/results/c10/c10886686a0d29877004a0afe2106a77aa2f2ba0
> 
> Signed-off-by: Peter Seiderer <ps.report@gmx.net>
> ---
>  package/assimp/assimp.mk | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/package/assimp/assimp.mk b/package/assimp/assimp.mk
> index cda02dd..fecf6d7 100644
> --- a/package/assimp/assimp.mk
> +++ b/package/assimp/assimp.mk
> @@ -18,4 +18,8 @@ endif
>  
>  ASSIMP_CONF_OPTS += -DASSIMP_BUILD_TESTS=OFF -DCMAKE_CXX_FLAGS="$(TARGET_CXXFLAGS) $(ASSIMP_CXXFLAGS)"
>  
> +ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
> +ASSIMP_CONF_OPTS += -DCMAKE_EXE_LINKER_FLAGS="-pthread"
> +endif
> +
>  $(eval $(cmake-package))

Waldemar is sure this is a uClibc-ng failure and will be fixed with update to
uClibc-ng 1.0.18 (as stated for similar failure of powertop, see [2]), will
defer this patch in patchwork...

Regards,
Peter