[OE-core] [meta-clang][PATCH] conf/nonclangable.conf: Always build mesa with gcc

[Böszörményi Zoltán]

Ignore this, the patch is against the zeus branch.
Re-sent with the proper subject.

2020. 02. 27. 7:16 keltezéssel, Böszörményi Zoltán írta:
> Building mesa (at least version 19.3.4) with clang 9.0.1 leads
> to linker errors on x86/x86-64:
> 
> "undefined reference to `typeinfo for llvm::raw_pwrite_stream'"
> in libvulkan_radeon.so
> 
> and
> 
> "undefined reference to `typeinfo for llvm::RTDyldMemoryManager'"
> in libgallium.a.
> 
> It was reported at https://gitlab.freedesktop.org/mesa/mesa/issues/2533
> 
> It seems it is related to rtti not being enabled, at least reports
> from a few years ago on forums lead to that conclusion.
> But enabling rtti for clang in PACKAGECONFIG doesn't help.
> 
> Just build mesa with gcc, it fixes the linker errors.
> 
> Signed-off-by: Böszörményi Zoltán <zboszor at pr.hu>
> ---
>   conf/nonclangable.conf | 7 +++----
>   1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/conf/nonclangable.conf b/conf/nonclangable.conf
> index 70336bb..91b9965 100644
> --- a/conf/nonclangable.conf
> +++ b/conf/nonclangable.conf
> @@ -45,10 +45,9 @@ TOOLCHAIN_pn-libssp-nonshared = "gcc"
>   TOOLCHAIN_pn-libstd-rs = "gcc"
>   TOOLCHAIN_pn-m4_powerpc = "gcc"
>   # clang does not have 64bit atomics on mips32
> -TOOLCHAIN_pn-mesa_mips = "gcc"
> -TOOLCHAIN_pn-mesa_mipsel = "gcc"
> -TOOLCHAIN_pn-mesa_riscv64 = "gcc"
> -TOOLCHAIN_pn-mesa_powerpc = "gcc"
> +# building Mesa 19.3.x with clang causes linker errors on x86/x86-64
> +# See https://gitlab.freedesktop.org/mesa/mesa/issues/2533
> +TOOLCHAIN_pn-mesa = "gcc"
>   # multiple definition of 'mongo::error_details::isNamedCode<0>'
>   TOOLCHAIN_pn-mongodb = "gcc"
>   # variant-impl.hpp:309:36: error: 'is_variant' does not name a template but is followed by template arguments
>