[Buildroot] [External] Re: [PATCH v11 4/9] package/libclc: bump version to 11.1.0

[Weber, Matthew L Collins <Matthew.Weber@collins.com>]

Arnout,

> -----Original Message-----
> From: Arnout Vandecappelle <arnout@mind.be>
> Sent: Tuesday, May 18, 2021 4:04 PM
> To: Weber, Matthew L Collins <Matthew.Weber@collins.com>; buildroot
> <buildroot@buildroot.org>
> Cc: Joseph Kogut <joseph.kogut@gmail.com>; Romain Naour
> <romain.naour@gmail.com>; Samuel Martin <s.martin49@gmail.com>;
> Thomas Petazzoni <thomas.petazzoni@bootlin.com>; Valentin Korenblit
> <valentinkorenblit@gmail.com>
> Subject: [External] Re: [Buildroot] [PATCH v11 4/9] package/libclc: bump
> version to 11.1.0
> 
>  Hi Matt,
> 
>  I was going to apply this series to next...
> 
> On 11/03/2021 20:37, Matthew Weber via buildroot wrote:
> [snip]
> >>> -# C++ compiler is used to build a small tool (prepare-builtins) for the
> host.
> >>> -# It must be built with the C++ compiler from the host.
> >>> +# CMAKE_*_COMPILER_FORCED=ON skips testing the tools and
> assumes #
> >>> +llvm-config provided values
> >>>  #
> >>> -# The headers are installed in /usr/share and not /usr/include, -#
> >>> because they are needed at runtime on the target to build the OpenCL
> >>> -# kernels.
> >>> +# CMAKE_CXX_COMPILER has to be set to the host compiler to build a
> >>> +host # 'prepare_builtins' tool used during the build process
> >>>  LIBCLC_CONF_OPTS = \
> >>> -       --with-llvm-config=$(HOST_DIR)/usr/bin/llvm-config \
> >>> -       --prefix=/usr \
> >>> -       --includedir=/usr/share \
> >>> -       --pkgconfigdir=/usr/lib/pkgconfig \
> >>> -       --with-cxx-compiler=$(HOSTCXX_NOCCACHE)
> >>> +       -DCMAKE_CLC_COMPILER_FORCED=ON \
> >>> +       -DCMAKE_LLAsm_COMPILER_FORCED=ON \
> >>> +       -DCMAKE_CXX_COMPILER="$(CMAKE_HOST_CXX_COMPILER)"
> >
> > Looks like I have a couple of bugs (I didn't have opencl checked in
> > menuconfig)
> 
> ... but then I saw this. So I didn't. Instead, I've marked the series as Changes
> Requested. If you think it should be applied after all, please repost (or just
> update patchwork if unchanged).

Thx, this is definitely still broken.  I'll update the version as well when I take another look.

-Matt

> 
>  Oh, and 12.0.0 has been released now...
> 
> >
> > 1) mesa3d.mk needs MESA3D_MESON_EXTRA_BINARIES +=
> > llvm-config='$(STAGING_DIR)/bin/llvm-config' updated to point to the
> 
>  Normally, the foo-config programs are script, so it's OK to use the one in
> staging. If it's an actual binary, we have to somehow patch it so it has target
> config but compiles for host.
> 
>  I'd expect llvm and related to be cross-compile friendly though...
> 
> > HOST_DIR llvm-config because it needs to be able to execute the tool.
> > However this doesn't work since then you get the
> > "host/lib/libLLVM-11.so when searching for -lLLVM-11 " error which
> > makes sense since that's the host llvm-config we pointed at.....
> > Unsure how to solve this one and we don't notice it in x86 builds.
> > When you enable the AMD Radeon to build for aarch64 you can cause this
> > error.
> >
> > 2) mesa3d doesn't quite build (pkgconfig can't find libclc).  I didn't
> > catch that CMAKE_INSTALL_PREFIX is getting ignored (we set it in the
> > pkg-cmake.mk infra) so the libclc.pc is getting installed in
> > $HOST_DIR/usr/local/share vs $HOST_DIR/usr/share .  I haven't been
> > able to figure out why the value doesn't take hold (ie after the
> > configuration step libclc-11.1.0/CMakeCache.txt still shows /usr/local
> > unless I force set the CMAKE_INSTALL_PREFIX value in
> > libclc-11.1.0/CMakeList.txt before project().
> 
>  That *is* weird...
> 
>  Regards,
>  Arnout
> 
> >
> >
> > Matt
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