Hello,

Attached is a patch to fix failures for mesa-opencl and mesa-opencl-icd building with the update to 21.1.6 for Mesa. This is from upstream, a change in meson.build that removed LLVM targets (for CMake users it seems) but then breaks compilation for us on a shared library LLVM build.

https://gitlab.freedesktop.org/mesa/mesa/-/issues/4443

https://gitlab.freedesktop.org/mesa/mesa/-/issues/4302

And the commit that changed it: https://gitlab.freedesktop.org/mesa/mesa/-/commit/80817b6e344258ac9b955f824ebf9019a0fc1610

The patch restores 'all-targets' to llvm_modules and successfully builds. Apologies about the long line and I'm still guessing at some of the scheme patching code. Since Mesa takes a while to build I didn't want to go through many iterations to get the code cleaner. Please feel free to make it better, and I would think mesa-opencl-icu should be able to inherit the patch from mesa-opencl, but I didn't try to do that.

Thanks,
John