138 lines
		
	
	
		
			3.6 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			138 lines
		
	
	
		
			3.6 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{
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  llvmPackages_latest
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, lib
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, fetchFromGitHub
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, cmake
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, bash
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, python3
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, perl
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, which
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, elfutils
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, libffi
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, zlib
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, pkg-config
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, gcc # needed to set the rpath of libstdc++ for clang-tblgen
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, enableDebug ? false
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, useGit ? false
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, gitUrl ? "ssh://git@bscpm04.bsc.es/llvm-ompss/llvm-mono.git"
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, gitBranch ? "master"
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, gitCommit ? "880e2341c56bad1dc14e8c369fb3356bec19018e"
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}:
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let
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  stdenv = llvmPackages_latest.stdenv;
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  release = rec {
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    version = "2025.06";
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    src = fetchFromGitHub {
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      owner = "bsc-pm";
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      repo = "llvm";
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      rev = "refs/tags/github-release-${version}";
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      hash = "sha256-ww9PpRmtz/M9IyLiZ8rAehx2UW4VpQt+svf4XfKBzKo=";
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    };
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  };
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  git = rec {
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    version = src.shortRev;
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    src = builtins.fetchGit {
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      url = gitUrl;
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      ref = gitBranch;
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      rev = gitCommit;
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    };
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  };
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  source = if (useGit) then git else release;
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in stdenv.mkDerivation {
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  pname = "clang-ompss2";
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  inherit (source) src version;
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  enableParallelBuilding = true;
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  passthru = {
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    CC = "clang";
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    CXX = "clang++";
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    isClang = true;
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    isClangWithOmpss = true;
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    inherit gcc zlib;
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  };
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  nativeBuildInputs = [
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    bash
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    cmake
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    elfutils
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    llvmPackages_latest.lld
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    pkg-config
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    python3
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    perl
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    which
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    zlib
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  ];
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  buildInputs = [
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    libffi
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    zlib
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    gcc.cc.lib # Required for libstdc++.so.6
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  ];
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  # Error with -D_FORTIFY_SOURCE=2, see https://bugs.gentoo.org/636604:
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  # /build/source/compiler-rt/lib/tsan/dd/dd_interceptors.cpp:225:20:
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  # error: redefinition of 'realpath'
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  # Requires disabling the "fortify" set of flags, however, for performance we
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  # disable all:
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  hardeningDisable = [ "all" ];
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  cmakeBuildType = if enableDebug then "Debug" else "Release";
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  dontStrip = enableDebug;
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  dontUseCmakeBuildDir = true;
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  # Fix the host triple, as it has changed in a newer config.guess:
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  # https://git.savannah.gnu.org/gitweb/?p=config.git;a=commitdiff;h=ca9bfb8cc75a2be1819d89c664a867785c96c9ba
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  preConfigure = ''
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    mkdir -p build
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    cd build
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    cmakeDir="../llvm"
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    cmakeFlagsArray=(
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      "-DLLVM_HOST_TRIPLE=${stdenv.targetPlatform.config}"
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      "-DLLVM_TARGETS_TO_BUILD=host"
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      "-DLLVM_BUILD_LLVM_DYLIB=ON"
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      "-DLLVM_LINK_LLVM_DYLIB=ON"
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      # Required to run clang-ast-dump and clang-tblgen during build
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      "-DCMAKE_BUILD_RPATH=$PWD/lib:${zlib}/lib:${gcc.cc.lib}/lib"
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      "-DLLVM_ENABLE_LLD=ON"
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      "-DCMAKE_CXX_FLAGS_DEBUG=-g -ggnu-pubnames"
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      "-DCMAKE_EXE_LINKER_FLAGS_DEBUG=-Wl,--gdb-index"
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      "-DLLVM_LIT_ARGS=-sv --xunit-xml-output=xunit.xml"
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      "-DLLVM_ENABLE_PROJECTS=clang;compiler-rt;lld"
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      "-DLLVM_ENABLE_ASSERTIONS=ON"
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      "-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON"
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      "-DCMAKE_INSTALL_BINDIR=bin"
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      "-DLLVM_ENABLE_ZLIB=FORCE_ON"
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      "-DLLVM_ENABLE_LIBXML2=OFF"
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      # Set the rpath to include external libraries (zlib) both on build and
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      # install
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      "-DCMAKE_INSTALL_RPATH_USE_LINK_PATH=ON"
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      "-DCMAKE_INSTALL_RPATH=${zlib}/lib:${gcc.cc.lib}/lib"
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      "-DLLVM_APPEND_VC_REV=ON"
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      "-DLLVM_FORCE_VC_REVISION=${source.version}"
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    )
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  '';
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# About "-DCLANG_DEFAULT_NANOS6_HOME=${nanos6}", we could specify a default
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# nanos6 installation, but this is would require a recompilation of clang each
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# time nanos6 is changed. Better to use the environment variable NANOS6_HOME,
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# and specify nanos6 at run time.
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  meta = {
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    homepage = "https://gitlab.pm.bsc.es/llvm-ompss/llvm-mono";
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    description = "C language family frontend for LLVM (for OmpSs-2)";
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    maintainers = with lib.maintainers.bsc; [ rpenacob ];
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    platforms = lib.platforms.linux;
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    license = [ lib.licenses.asl20 lib.licenses.llvm-exception ];
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  };
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}
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