forked from mirrors/nixpkgs
7869d16545
Also begin to start work on cross compilation, though that will have to
be finished later.
The patches are based on the first version of
https://reviews.llvm.org/D99484. It's very annoying to do the
back-porting but the review has uncovered nothing super major so I'm
fine sticking with what I've got.
Beyond making the outputs work, I also strove to re-sync the packages,
as they have been drifting pointlessly apart for some time.
----
Other misc notes, highly incomplete
- lvm-config-native and llvm-config are put in `dev` because they are
tools just for build time.
- Clang no longer has an lld dep. That was introduced in
db29857eb3, but if clang needs help
finding lld when it is used we should just pass it flags / put in the
resource dir. Providing it at build time increases critical path
length for no good reason.
----
A note on `nativeCC`:
`stdenv` takes tools from the previous stage, so:
1. `pkgsBuildBuild`: `(?1, x, x)`
2. `pkgsBuildBuild.stdenv.cc`: `(?0, ?1, x)`
while:
1. `pkgsBuildBuild`: `(?1, x, x)`
2. `pkgsBuildBuild.targetPackages`: `(x, x, ?2)`
3. `pkgsBuildBuild.targetPackages.stdenv.cc`: `(?1, x, x)`
101 lines
2.5 KiB
Nix
101 lines
2.5 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_8
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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_8 // {
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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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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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installPhase = ''
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[ -d patches ] && cp -r patches/ $out || mkdir $out
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mkdir -p $out/clang $out/spirv
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'';
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};
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spirv-llvm-translator = addPatches "spirv" llvmPkgs.spirv-llvm-translator;
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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-2019-08-16";
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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 = "94af090661d7c953c516c97a25ed053c744a0737";
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sha256 = "05cg89m62nqjqm705h7gpdz4jd4hiczg8944dcjsvaybrqv3hcm5";
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};
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patches = [
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# Build script tries to find Clang OpenCL headers under ${llvm}
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# Work around it by specifying that directory manually.
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./opencl-headers-dir.patch
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];
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nativeBuildInputs = [ cmake git ];
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buildInputs = [ libclang llvm spirv-llvm-translator ];
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cmakeFlags = [
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"-DPREFERRED_LLVM_VERSION=${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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