Shipping the Intel iris/ANV gallium+vulkan drivers turns on Mesa's with_clc
(with_driver_using_cl), which requires, in the native mesa_clc/intel_clc shader
precompile path: LLVMSPIRVLib (SPIRV-LLVM-Translator), SPIRV-Tools, and clang's
C++ libraries. None had recipes. Add three host-built dev recipes modelled on
libclc (built against llvm-native's host LLVM 21, staged into the cross sysroot
so Mesa's pkg-config resolves them):
- spirv-headers (SPIR-V grammar + headers; find_package package)
- spirv-tools (SPIRV-Tools.pc; SPIRV-Headers via find_package)
- spirv-llvm-translator (LLVMSPIRVLib.pc, v21.1.0.0; llvm_release_210 branch)
All three clear the cross-sysroot __libc_start_main leak with the llvm21-style
flag-clearing block in their native toolchain files.
Wire them + clang21 into mesa deps: Mesa resolves dep_clang via
cpp.find_library('clang-cpp', dirs: llvm-config --libdir), which the wrapper
rewrites to the target sysroot/lib, so clang21's target libclang-cpp.so must be
staged there (shared-llvm=enabled avoids needing the static clang libs).
Verified: mesa meson now passes amdgpu, LLVMSPIRVLib, SPIRV-Tools, and clang-cpp
(next gate is libelf for radeonsi).
vasilito
e4c78b3d18