132 lines
4.5 KiB
Nix
132 lines
4.5 KiB
Nix
|
{ lib, stdenv, llvm_meta
|
||
|
, monorepoSrc, runCommand, fetchpatch
|
||
|
, cmake, ninja, python3, fixDarwinDylibNames, version
|
||
|
, cxxabi ? if stdenv.hostPlatform.isFreeBSD then libcxxrt else libcxxabi
|
||
|
, libcxxabi, libcxxrt, libunwind
|
||
|
, enableShared ? !stdenv.hostPlatform.isStatic
|
||
|
|
||
|
# If headersOnly is true, the resulting package would only include the headers.
|
||
|
# Use this to break the circular dependency between libcxx and libcxxabi.
|
||
|
#
|
||
|
# Some context:
|
||
|
# https://reviews.llvm.org/rG1687f2bbe2e2aaa092f942d4a97d41fad43eedfb
|
||
|
, headersOnly ? false
|
||
|
}:
|
||
|
|
||
|
let
|
||
|
basename = "libcxx";
|
||
|
in
|
||
|
|
||
|
assert stdenv.isDarwin -> cxxabi.libName == "c++abi";
|
||
|
|
||
|
stdenv.mkDerivation rec {
|
||
|
pname = basename + lib.optionalString headersOnly "-headers";
|
||
|
inherit version;
|
||
|
|
||
|
src = runCommand "${pname}-src-${version}" {} ''
|
||
|
mkdir -p "$out"
|
||
|
cp -r ${monorepoSrc}/cmake "$out"
|
||
|
cp -r ${monorepoSrc}/${basename} "$out"
|
||
|
mkdir -p "$out/libcxxabi"
|
||
|
cp -r ${monorepoSrc}/libcxxabi/include "$out/libcxxabi"
|
||
|
mkdir -p "$out/llvm"
|
||
|
cp -r ${monorepoSrc}/llvm/cmake "$out/llvm"
|
||
|
cp -r ${monorepoSrc}/llvm/utils "$out/llvm"
|
||
|
cp -r ${monorepoSrc}/third-party "$out"
|
||
|
cp -r ${monorepoSrc}/runtimes "$out"
|
||
|
'';
|
||
|
|
||
|
sourceRoot = "${src.name}/runtimes";
|
||
|
|
||
|
outputs = [ "out" ] ++ lib.optional (!headersOnly) "dev";
|
||
|
|
||
|
prePatch = ''
|
||
|
cd ../${basename}
|
||
|
chmod -R u+w .
|
||
|
'';
|
||
|
|
||
|
patches = [
|
||
|
./gnu-install-dirs.patch
|
||
|
# See:
|
||
|
# - https://reviews.llvm.org/D133566
|
||
|
# - https://github.com/NixOS/nixpkgs/issues/214524#issuecomment-1429146432
|
||
|
# !!! Drop in LLVM 16+
|
||
|
(fetchpatch {
|
||
|
url = "https://github.com/llvm/llvm-project/commit/57c7bb3ec89565c68f858d316504668f9d214d59.patch";
|
||
|
hash = "sha256-AaM9A6tQ4YAw7uDqCIV4VaiUyLZv+unwcOqbakwW9/k=";
|
||
|
relative = "libcxx";
|
||
|
})
|
||
|
] ++ lib.optionals stdenv.hostPlatform.isMusl [
|
||
|
../../libcxx-0001-musl-hacks.patch
|
||
|
];
|
||
|
|
||
|
postPatch = ''
|
||
|
cd ../runtimes
|
||
|
'';
|
||
|
|
||
|
preConfigure = lib.optionalString stdenv.hostPlatform.isMusl ''
|
||
|
patchShebangs utils/cat_files.py
|
||
|
'';
|
||
|
|
||
|
nativeBuildInputs = [ cmake ninja python3 ]
|
||
|
++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
|
||
|
|
||
|
buildInputs =
|
||
|
lib.optionals (!headersOnly) [ cxxabi ]
|
||
|
++ lib.optionals (stdenv.hostPlatform.useLLVM or false) [ libunwind ];
|
||
|
|
||
|
cmakeFlags = let
|
||
|
# See: https://libcxx.llvm.org/BuildingLibcxx.html#cmdoption-arg-libcxx-cxx-abi-string
|
||
|
libcxx_cxx_abi_opt = {
|
||
|
"c++abi" = "system-libcxxabi";
|
||
|
"cxxrt" = "libcxxrt";
|
||
|
}.${cxxabi.libName} or (throw "unknown cxxabi: ${cxxabi.libName} (${cxxabi.pname})");
|
||
|
in [
|
||
|
"-DLLVM_ENABLE_RUNTIMES=libcxx"
|
||
|
"-DLIBCXX_CXX_ABI=${if headersOnly then "none" else libcxx_cxx_abi_opt}"
|
||
|
] ++ lib.optional (!headersOnly && cxxabi.libName == "c++abi") "-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi.dev}/include/c++/v1"
|
||
|
++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) "-DLIBCXX_HAS_MUSL_LIBC=1"
|
||
|
++ lib.optionals (stdenv.hostPlatform.useLLVM or false) [
|
||
|
"-DLIBCXX_USE_COMPILER_RT=ON"
|
||
|
# (Backport fix from 16, which has LIBCXX_ADDITIONAL_LIBRARIES, but 15
|
||
|
# does not appear to)
|
||
|
# There's precedent for this in llvm-project/libcxx/cmake/caches.
|
||
|
# In a monorepo build you might do the following in the libcxxabi build:
|
||
|
# -DLLVM_ENABLE_PROJECTS=libcxxabi;libunwind
|
||
|
# -DLIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY=On
|
||
|
# libcxx appears to require unwind and doesn't pull it in via other means.
|
||
|
# "-DLIBCXX_ADDITIONAL_LIBRARIES=unwind"
|
||
|
"-DCMAKE_SHARED_LINKER_FLAGS=-lunwind"
|
||
|
] ++ lib.optionals stdenv.hostPlatform.isWasm [
|
||
|
"-DLIBCXX_ENABLE_THREADS=OFF"
|
||
|
"-DLIBCXX_ENABLE_FILESYSTEM=OFF"
|
||
|
"-DLIBCXX_ENABLE_EXCEPTIONS=OFF"
|
||
|
] ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF"
|
||
|
# If we're only building the headers we don't actually *need* a functioning
|
||
|
# C/C++ compiler:
|
||
|
++ lib.optionals (headersOnly) [
|
||
|
"-DCMAKE_C_COMPILER_WORKS=ON"
|
||
|
"-DCMAKE_CXX_COMPILER_WORKS=ON"
|
||
|
];
|
||
|
|
||
|
ninjaFlags = lib.optional headersOnly "generate-cxx-headers";
|
||
|
installTargets = lib.optional headersOnly "install-cxx-headers";
|
||
|
|
||
|
passthru = {
|
||
|
isLLVM = true;
|
||
|
inherit cxxabi;
|
||
|
};
|
||
|
|
||
|
meta = llvm_meta // {
|
||
|
homepage = "https://libcxx.llvm.org/";
|
||
|
description = "C++ standard library";
|
||
|
longDescription = ''
|
||
|
libc++ is an implementation of the C++ standard library, targeting C++11,
|
||
|
C++14 and above.
|
||
|
'';
|
||
|
# "All of the code in libc++ is dual licensed under the MIT license and the
|
||
|
# UIUC License (a BSD-like license)":
|
||
|
license = with lib.licenses; [ mit ncsa ];
|
||
|
};
|
||
|
}
|