The libclc CMake config validates target names as
(with double-dash suffix for the unspecified-ABI variant). The
previous 'amdgcn', 'amdgcn-amdhsa', 'r600', 'generic', 'spirv'
names caused:
CMake Error at CMakeLists.txt:156 (message):
Unknown target in LIBCLC_TARGETS_TO_BUILD: 'amdgcn'
Valid targets are:
amdgcn--;amdgcn--amdhsa;clspv--;clspv64--;r600--;nvptx--;
nvptx64--;nvptx--nvidiacl;nvptx64--nvidiacl;amdgcn-mesa-mesa3d
Fix: use the correct names with suffix:
r600-- -> r600 (Southern Islands / Evergreen)
amdgcn-- -> GCN GFX6..GFX12 default-ABI
amdgcn--amdhsa -> GCN with HSA runtime
amdgcn-mesa-mesa3d -> GCN via Mesa3D-specific frontend
The target is excluded because Mesa's clc tool produces
its own spirv .bc files rather than consuming libclc's. Similarly,
nvptx is excluded because there is no NVIDIA path in Mesa.
Verified: 'cmake' with -DLIBCLC_TARGETS_TO_BUILD=... above
configures successfully and 'make' produces all 118 expected .bc
files (r600 devices: cedar/cypress/barts/cayman, amdgcn devices:
tahiti..gfx1201 across all GFX variants). 'make install' places
the .pc file at /share/pkgconfig/libclc.pc (default cmake
pkgconfig location, in pkg-config's standard search path) and the
.bc files at /share/clc/ (which is what libclc.pc's
libexecdir points to).
After this fix, a fresh meson setup of Mesa with the iris/radeonsi
gallium drivers and intel/amd/swrast Vulkan drivers resolves
'dependency(libclc)' successfully — the previous 'Dependency
libclc not found' error goes away, and the gallium-r600 / gallium-
amdgpu / iris paths can compile.
The mesa-recipe's iris/radeonsi/Vulkan configuration is already
in place (per commit b7b8168aae which reverted the libclc-induced
driver drop). With this libclc recipe committed, the recipe build
chain is unblocked.
vasilito
c34055da09