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{ llvmPackages, lib, fetchFromGitHub, cmake
, libpng, libjpeg, mesa, eigen, openblas
}:
let
version = "2018_02_15";
in llvmPackages.stdenv.mkDerivation {
name = "halide-${builtins.replaceStrings ["_"] ["."] version}";
src = fetchFromGitHub {
owner = "halide";
repo = "Halide";
rev = "release_${version}";
sha256 = "14lmpbxydx7ii0pxds6rgq5vw4i6yfjsq0bai1l5wwpv1rnwmbxd";
};
patches = [ ./nix.patch ];
# clang fails to compile intermediate code because
# of unused "--gcc-toolchain" option
postPatch = ''
sed -i "s/-Werror//" src/CMakeLists.txt
'';
cmakeFlags = [ "-DWARNINGS_AS_ERRORS=OFF" ];
# To handle the lack of 'local' RPATH; required, as they call one of
# their built binaries requiring their libs, in the build process.
preBuild = ''
export LD_LIBRARY_PATH="$(pwd)/lib:$LD_LIBRARY_PATH"
'';
enableParallelBuilding = true;
# Note: only openblas and not atlas part of this Nix expression
# see pkgs/development/libraries/science/math/liblapack/3.5.0.nix
# to get a hint howto setup atlas instead of openblas
buildInputs = [ llvmPackages.llvm libpng libjpeg mesa eigen openblas ];
nativeBuildInputs = [ cmake ];
# No install target for cmake available.
# Calling install target in Makefile causes complete rebuild
# and the library rpath is broken, because libncursesw.so.6 is missing.
# Another way is using "make halide_archive", but the tarball is not easy
# to disassemble.
installPhase = ''
find
mkdir -p "$out/lib" "$out/bin"
cp bin/HalideTrace* "$out/bin"
cp lib/libHalide.so "$out/lib"
cp -r include "$out"
'';
meta = with lib; {
description = "C++ based language for image processing and computational photography";
homepage = "https://halide-lang.org";
license = licenses.mit;
platforms = platforms.linux;
maintainers = [ maintainers.ck3d ];
};
}
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