115 lines
3.1 KiB
Nix
115 lines
3.1 KiB
Nix
{ lib
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, stdenv
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, fetchFromGitHub
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, fetchpatch
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, cmake
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, git
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, llvmPackages_11
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, spirv-llvm-translator
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, buildWithPatches ? true
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}:
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let
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llvmPkgs = llvmPackages_11 // {
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inherit spirv-llvm-translator;
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};
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inherit (lib) getVersion;
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addPatches = component: pkg:
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with builtins; with lib;
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let path = "${passthru.patchesOut}/${component}";
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in pkg.overrideAttrs (super: {
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postPatch = (if super ? postPatch then super.postPatch + "\n" else "") + ''
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for p in ${path}/*
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do
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patch -p1 -i "$p"
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done
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'';
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});
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passthru = rec {
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spirv-llvm-translator = llvmPkgs.spirv-llvm-translator;
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llvm = addPatches "llvm" llvmPkgs.llvm;
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libclang = addPatches "clang" llvmPkgs.libclang;
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clang-unwrapped = libclang.out;
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clang = llvmPkgs.clang.override {
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cc = clang-unwrapped;
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};
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patchesOut = stdenv.mkDerivation rec {
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pname = "opencl-clang-patches";
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inherit (library) version src patches;
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# Clang patches assume the root is the llvm root dir
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# but clang root in nixpkgs is the clang sub-directory
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postPatch = ''
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for filename in patches/clang/*.patch; do
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substituteInPlace "$filename" \
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--replace "a/clang/" "a/" \
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--replace "b/clang/" "b/"
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done
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'';
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installPhase = ''
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[ -d patches ] && cp -r patches/ $out || mkdir $out
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mkdir -p $out/clang $out/llvm
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'';
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};
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};
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library = let
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inherit (llvmPkgs) llvm;
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inherit (if buildWithPatches then passthru else llvmPkgs) libclang spirv-llvm-translator;
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in
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stdenv.mkDerivation rec {
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pname = "opencl-clang";
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version = "unstable-2022-03-16";
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inherit passthru;
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src = fetchFromGitHub {
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owner = "intel";
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repo = "opencl-clang";
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rev = "bbdd1587f577397a105c900be114b56755d1f7dc";
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sha256 = "sha256-qEZoQ6h4XAvSnJ7/gLXBb1qrzeYa6Jp6nij9VFo8MwQ=";
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};
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patches = [
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# Build script tries to find Clang OpenCL headers under ${llvm}
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# Work around it by specifying that directory manually.
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./opencl-headers-dir.patch
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];
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# Uses linker flags that are not supported on Darwin.
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postPatch = lib.optionalString stdenv.isDarwin ''
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sed -i -e '/SET_LINUX_EXPORTS_FILE/d' CMakeLists.txt
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substituteInPlace CMakeLists.txt \
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--replace '-Wl,--no-undefined' ""
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'';
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nativeBuildInputs = [ cmake git llvm.dev ];
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buildInputs = [ libclang llvm spirv-llvm-translator ];
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cmakeFlags = [
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"-DPREFERRED_LLVM_VERSION=${getVersion llvm}"
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"-DOPENCL_HEADERS_DIR=${libclang.lib}/lib/clang/${getVersion libclang}/include/"
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"-DLLVMSPIRV_INCLUDED_IN_LLVM=OFF"
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"-DSPIRV_TRANSLATOR_DIR=${spirv-llvm-translator}"
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];
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meta = with lib; {
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homepage = "https://github.com/intel/opencl-clang/";
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description = "A clang wrapper library with an OpenCL-oriented API and the ability to compile OpenCL C kernels to SPIR-V modules";
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license = licenses.ncsa;
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platforms = platforms.all;
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maintainers = with maintainers; [ gloaming ];
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};
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};
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in
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library
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