vasilito
f26371ae30
libclc was vendored at recipes/dev/llvm21/source/libclc/ as a
build artifact of the llvm21 fork. This promoted it from an
implicit Mesa dependency (the CLC bitcode Mesa consumes) to a
first-class local project, mirroring how tlc, redbear-*, cub, etc.
are organized per local/AGENTS.md.
Local layout follows the existing in-house pattern:
recipes/dev/libclc -> ../../local/recipes/dev/libclc
local/recipes/dev/libclc/recipe.toml
local/recipes/dev/libclc/source/ (vendored from llvm-project)
The recipe builds libclc as a host-side CMake project using the
cookbook-sysroot clang21 binary (not the cross-compiler) to compile
OpenCL kernels to .bc bitcode. Output targets are amdgcn, amdgcn-amdhsa,
r600, generic, and spirv — the union that Mesa's clc tool consumes
for the iris/radeonsi/llvmpipe drivers. ptx-nvidiacl and clspv are
excluded because they don't map onto any Mesa hardware driver.
The recipe also wires the cookbook's native-cmake generation with
an override that points CMAKE_C_COMPILER etc. at the cookbook
sysroot's clang-21 binary. This is needed because libclc must
run on the build host (output is bitcode, not a Redox binary),
and the cookbook's default cross-toolchain would link the build
against relibc instead of host glibc.
libclc.pc is installed at usr/lib/pkgconfig/, satisfying Mesa's
dependency('libclc') lookup. The .bc files are installed under
usr/share/clc/, which is what the libclc.pc libexecdir pointer
(libexecdir=<prefix>/share/clc) expects.
This is the prerequisite for re-enabling iris, radeonsi, and the
Intel Vulkan driver in the Mesa recipe (Phase 4-6 of
local/docs/3D-DRIVER-PLAN.md). With libclc available in the
cross-sysroot, mesa's meson '-Dwith_clc -> dependency(libclc)'
resolves and the gallium drivers compile.
41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef __CLC_CLCFUNC_H_
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#define __CLC_CLCFUNC_H_
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#define _CLC_OVERLOAD __attribute__((overloadable))
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#define _CLC_DECL
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#define _CLC_INLINE __attribute__((always_inline)) inline
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// avoid inlines for SPIR-V related targets since we'll optimise later in the
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// chain
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#if defined(CLC_SPIRV)
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#define _CLC_DEF
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#elif defined(CLC_CLSPV)
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#define _CLC_DEF __attribute__((noinline)) __attribute__((clspv_libclc_builtin))
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#else
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#define _CLC_DEF __attribute__((always_inline))
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#endif
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#if __OPENCL_C_VERSION__ == CL_VERSION_2_0 || \
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(__OPENCL_C_VERSION__ >= CL_VERSION_3_0 && \
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defined(__opencl_c_generic_address_space))
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#define _CLC_GENERIC_AS_SUPPORTED 1
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#if __CLC_PRIVATE_ADDRSPACE_VAL != __CLC_GENERIC_ADDRSPACE_VAL
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#define _CLC_DISTINCT_GENERIC_AS_SUPPORTED 1
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#else
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#define _CLC_DISTINCT_GENERIC_AS_SUPPORTED 0
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#endif
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#else
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#define _CLC_GENERIC_AS_SUPPORTED 0
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#define _CLC_DISTINCT_GENERIC_AS_SUPPORTED 0
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#endif
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#endif // __CLC_CLCFUNC_H_
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