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{ lib
, stdenv
, applyPatches
, fetchFromGitHub
, fetchpatch
, cmake
, git
, llvmPackages_14
, spirv-llvm-translator
, buildWithPatches ? true
}:
let
addPatches = component: pkg: pkg.overrideAttrs (oldAttrs: {
postPatch = oldAttrs.postPatch or "" + ''
for p in ${passthru.patchesOut}/${component}/*; do
patch -p1 -i "$p"
done
'';
});
llvmPkgs = llvmPackages_14;
inherit (llvmPkgs) llvm;
spirv-llvm-translator' = spirv-llvm-translator.override { inherit llvm; };
libclang = if buildWithPatches then passthru.libclang else llvmPkgs.libclang;
passthru = rec {
spirv-llvm-translator = spirv-llvm-translator';
llvm = addPatches "llvm" llvmPkgs.llvm;
libclang = addPatches "clang" llvmPkgs.libclang;
clang-unwrapped = libclang.out;
clang = llvmPkgs.clang.override {
cc = clang-unwrapped;
};
patchesOut = stdenv.mkDerivation {
pname = "opencl-clang-patches";
inherit version src;
# Clang patches assume the root is the llvm root dir
# but clang root in nixpkgs is the clang sub-directory
postPatch = ''
for filename in patches/clang/*.patch; do
substituteInPlace "$filename" \
--replace "a/clang/" "a/" \
--replace "b/clang/" "b/"
done
'';
installPhase = ''
[ -d patches ] && cp -r patches/ $out || mkdir $out
mkdir -p $out/clang $out/llvm
'';
};
};
version = "unstable-2023-06-12";
src = applyPatches {
src = fetchFromGitHub {
owner = "intel";
repo = "opencl-clang";
# https://github.com/intel/opencl-clang/compare/ocl-open-140
rev = "cf95b338d14685e4f3402ab1828bef31d48f1fd6";
hash = "sha256-To1RlQX9IJ+1zAwEXaW7ua3VNfjK9mu7pgsRPsfa8g8=";
};
patches = [
# Build script tries to find Clang OpenCL headers under ${llvm}
# Work around it by specifying that directory manually.
./opencl-headers-dir.patch
# fix CMake throwing errors
(fetchpatch {
url = "https://github.com/intel/opencl-clang/commit/321e3b99c1a8d54c8475f5ae998452069cc5eb71.patch";
hash = "sha256-cATbH+AMVtcabhl3EkzAH7w3wGreUV53hQYHVUUEP4g=";
})
];
postPatch = ''
# fix not be able to find clang from PATH
substituteInPlace cl_headers/CMakeLists.txt \
--replace " NO_DEFAULT_PATH" ""
'' + lib.optionalString stdenv.isDarwin ''
# Uses linker flags that are not supported on Darwin.
sed -i -e '/SET_LINUX_EXPORTS_FILE/d' CMakeLists.txt
substituteInPlace CMakeLists.txt \
--replace '-Wl,--no-undefined' ""
'';
};
in
stdenv.mkDerivation {
pname = "opencl-clang";
inherit version src;
nativeBuildInputs = [ cmake git llvm.dev ];
buildInputs = [ libclang llvm spirv-llvm-translator' ];
cmakeFlags = [
"-DPREFERRED_LLVM_VERSION=${lib.getVersion llvm}"
"-DOPENCL_HEADERS_DIR=${libclang.lib}/lib/clang/${lib.getVersion libclang}/include/"
"-DLLVMSPIRV_INCLUDED_IN_LLVM=OFF"
"-DSPIRV_TRANSLATOR_DIR=${spirv-llvm-translator'}"
];
inherit passthru;
meta = with lib; {
homepage = "https://github.com/intel/opencl-clang/";
description = "A clang wrapper library with an OpenCL-oriented API and the ability to compile OpenCL C kernels to SPIR-V modules";
license = licenses.ncsa;
maintainers = with maintainers; [ ];
platforms = platforms.all;
# error: invalid value 'CL3.0' in '-cl-std=CL3.0'
broken = stdenv.isDarwin;
};
}
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