nixpkgs/pkgs/development/libraries/opencl-clang/default.nix
2021-10-27 15:16:23 +02:00

116 lines
3.1 KiB
Nix

{ lib
, stdenv
, fetchFromGitHub
, fetchpatch
, cmake
, git
, llvmPackages_11
, spirv-llvm-translator
, buildWithPatches ? true
}:
let
llvmPkgs = llvmPackages_11 // {
inherit spirv-llvm-translator;
};
inherit (lib) getVersion;
addPatches = component: pkg:
with builtins; with lib;
let path = "${passthru.patchesOut}/${component}";
in pkg.overrideAttrs (super: {
postPatch = (if super ? postPatch then super.postPatch + "\n" else "") + ''
for p in ${path}/*
do
patch -p1 -i "$p"
done
'';
});
passthru = rec {
spirv-llvm-translator = llvmPkgs.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 rec {
pname = "opencl-clang-patches";
inherit (library) version src patches;
# 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
'';
};
};
library = let
inherit (llvmPkgs) llvm;
inherit (if buildWithPatches then passthru else llvmPkgs) libclang spirv-llvm-translator;
in
stdenv.mkDerivation rec {
pname = "opencl-clang";
version = "unstable-2021-06-22";
inherit passthru;
src = fetchFromGitHub {
owner = "intel";
repo = "opencl-clang";
rev = "fd68f64b33e67d58f6c36b9e25c31c1178a1962a";
sha256 = "sha256-q1YPBb/LY67iEuQx1fMUQD/I7OsNfobW3yNfJxLXx3E=";
};
patches = [
# Build script tries to find Clang OpenCL headers under ${llvm}
# Work around it by specifying that directory manually.
./opencl-headers-dir.patch
];
# Uses linker flags that are not supported on Darwin.
postPatch = lib.optionalString stdenv.isDarwin ''
sed -i -e '/SET_LINUX_EXPORTS_FILE/d' CMakeLists.txt
substituteInPlace CMakeLists.txt \
--replace '-Wl,--no-undefined' ""
'';
nativeBuildInputs = [ cmake git llvm.dev ];
buildInputs = [ libclang llvm spirv-llvm-translator ];
cmakeFlags = [
"-DPREFERRED_LLVM_VERSION=${getVersion llvm}"
"-DOPENCL_HEADERS_DIR=${libclang.lib}/lib/clang/${getVersion libclang}/include/"
"-DLLVMSPIRV_INCLUDED_IN_LLVM=OFF"
"-DSPIRV_TRANSLATOR_DIR=${spirv-llvm-translator}"
];
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;
platforms = platforms.all;
maintainers = with maintainers; [ gloaming ];
};
};
in
library