xo-numeric/pkgs/llvm.nix
Roland Conybeare 84f56b4528 nix: backup llvm build working
Don't need it, able to use vanilla nixpkgs build
2025-06-12 07:40:34 -05:00

155 lines
4.3 KiB
Nix

{
lib,
stdenv, cmake, python3,
enableSharedLibraries ? !stdenv.hostPlatform.isStatic,
enableManpages ? false,
enablePolly ? true,
libxml2, libffi, libedit, ncurses, zlib,
libpfm, valgrind,
doCheck ? false,
fetchFromGitHub,
} :
let
version = "18.1.7";
src = fetchFromGitHub {
name = "llvm-${version}-source";
owner = "llvm";
repo = "llvm-project";
rev = "llvmorg-${version}";
hash = "sha256-qBL/1zh2YFabiPAyHehvzDSDfnwnCvyH6nY/pzG757A=";
};
defaultTargets =
if stdenv.hostPlatform.isAarch64 then "AArch64"
else if stdenv.hostPlatform.isx86 then "X86"
else "all";
in {
# running out of memory during linking!!
llvm = stdenv.mkDerivation (finalAttrs:
{
pname = "llvm-xo";
inherit version src;
# only taking llvm subdir from upstream repo
sourceRoot = "${src.name}/llvm";
# don't try multiple outputs, hard to disentangle
outputs = [ "out" ];
nativeBuildInputs = [ cmake python3
] ++ lib.optional enableManpages [ python3.pkgs.sphinx ];
#NIX_CFLAGS_LINK = "-fuse-ld=gold"; # or -fuse-ld=lld
buildInputs = [ libxml2
libffi
zlib
ncurses
libedit
] ++ lib.optionals stdenv.hostPlatform.isLinux [
libpfm # performance monitoring
valgrind # debugging
];
propagatedBuildInputs = [ ncurses zlib ];
inherit doCheck;
cmakeFlags = [
# build type and optimization
"-DCMAKE_BUILD_TYPE=Release"
"-DLLVM_OPTIMIZED_TABLEGEN=ON"
"-DLLVM_INSTALL_UTILS=ON"
"-DLLVM_BUILD_TESTS=${if doCheck then "ON" else "OFF"}"
# gnuinstalldirs
"-DCMAKE_INSTALL_INCLUDEDIR=${placeholder "out"}/include"
# -DCMAKE_INSTALL_LIBDIR, -DCMAKE_INSTALL_LIBEXECDIR don't seem to have any effect for llvm build
# target architectures
"-DLLVM_TARGETS_TO_BUILD=${defaultTargets}"
# library settings
"-DLLVM_ENABLE_RTTI=ON"
"-DLLVM_ENABLE_EH=ON" # exception handling
"-DLLVM_ENABLE_FFI=ON"
"-DLLVM_ENABLE_ZLIB=ON"
"-DLLVM_ENABLE_TERMINFO=ON"
"-DLLVM_ENABLE_DUMP=ON"
# testing/benchmarks
"-DLLVM_BUILD_TESTS=${if doCheck then "ON" else "OFF"}"
# installation paths using GNUInstallDirs
"-DLLVM_INSTALL_PACKAGE_DIR=${placeholder "out"}/lib/cmake/llvm" # will contain refs back to out
"-DLLVM_INSTALL_BINUTILS_SYMLINKS=OFF"
# host configuration
"-DLLVM_HOST_TRIPLE=${stdenv.hostPlatform.config}"
"-DLLVM_DEFAULT_TARGET_TRIPLE=${stdenv.hostPlatform.config}"
# polly optimizer
(lib.optionalString enablePolly "-DLLVM_ENABLE_PROJECT=polly")
] ++ lib.optionals enableSharedLibraries [
# shared libraries
"-DLLVM_BUILD_LLVM_DYLIB=${lib.boolToString enableSharedLibraries}"
"-DLLVM_LINK_LLVM_DYLIB=${lib.boolToString enableSharedLibraries}"
] ++ lib.optionals enableManpages [
# documentation
"-DLLVM_BUILD_DOCS=ON"
"-DLLVM_ENABLE_SPHINX=ON"
"-DSPHINX_OUTPUT_MAN=ON"
"-DSPHINX_OUTPUT_HTML=OFF"
"-DSPHINX_WARNINGS_AS_ERRORS=OFF"
];
buildFlags = [
"VERBOSE=1"
"-j 22"
];
# running out of memory!
enableParallelBuilding = true;
# for llvm keep debug symbols
separateDebugInfo = stdenv.isLinux;
postInstall = ''
# create compatibility symlinks
mkdir -p $out/bin
for tool in llvm-config llvm-nm llvm-objdump llvm-readobj llvm-ar; do
ln -sf $out/bin/$tool $out/bin/${stdenv.hostPlatform.config}-$tool
done
echo debug=[$debug]
mkdir -p $debug
touch $debug/rolandwashere
'';
passthru = {
inherit src;
isClang = false;
hardeningUnsupportedFlags = [ "fortify3" ];
};
meta = with lib; {
description = "A collection of modular and reusable compiler and toolchain technologies";
homepage = "https://llvm.org/";
license = lib.licenses.ncsa;
maintainers = with maintainers; [];
platforms = platforms.all;
broken = stdenv.hostPlatform.is32bit;
};
});
}