pkgs/development/libraries/libclc/default.nix


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{ lib, stdenv, fetchFromGitHub, python3, llvmPackages }:

let
  llvm = llvmPackages.llvm;
  clang = llvmPackages.clang;
  clang-unwrapped = llvmPackages.clang-unwrapped;
in

stdenv.mkDerivation {
  name = "libclc-2019-06-09";

  src = fetchFromGitHub {
    owner = "llvm-mirror";
    repo = "libclc";
    rev = "9f6204ec04a8cadb6bef57caa71e3161c4f398f2";
    sha256 = "03l9frx3iw3qdsb9rrscgzdwm6872gv6mkssvn027ndf9y321xk7";
  };

  nativeBuildInputs = [ python3 llvm ];

  strictDeps = true;

  postPatch = ''
    sed -i 's,llvm_clang =.*,llvm_clang = "${clang-unwrapped}/bin/clang",' configure.py
    sed -i 's,cxx_compiler =.*,cxx_compiler = "${clang}/bin/clang++",' configure.py
  '';

  configurePhase = ''
    ${python3.interpreter} ./configure.py --prefix=$out
  '';

  enableParallelBuilding = true;

  meta = with lib; {
    homepage = "http://libclc.llvm.org/";
    description = "Implementation of the library requirements of the OpenCL C programming language";
    license = licenses.mit;
    platforms = platforms.all;
  };
}