129 lines
4.2 KiB
Nix
129 lines
4.2 KiB
Nix
# Serene Programming Language
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#
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# Copyright (c) 2019-2023 Sameer Rahmani <lxsameer@gnu.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 2.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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{ lib,
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stdenv,
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runCommand,
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cmake,
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ninja,
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python3,
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fixDarwinDylibNames,
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#cxxabi ? if stdenv.hostPlatform.isFreeBSD then libcxxrt else llvm_libcxxabi,
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#libcxxrt,
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llvm_libcxxabi,
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llvm_libunwind,
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llvm_source,
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utils,
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# If headersOnly is true, the resulting package would only include the headers.
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# Use this to break the circular dependency between libcxx and libcxxabi.
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#
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# Some context:
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# https://reviews.llvm.org/rG1687f2bbe2e2aaa092f942d4a97d41fad43eedfb
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headersOnly ? false
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}:
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let
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basename = "llvm_libcxx";
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in
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assert stdenv.isDarwin -> llvm_libcxxabi.libName == "c++abi";
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stdenv.mkDerivation rec {
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pname = basename + lib.optionalString headersOnly "-headers";
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inherit (llvm_source) version;
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src = runCommand "${pname}-src-${version}" {} ''
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mkdir -p "$out"
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cp -r ${llvm_source}/cmake "$out"
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cp -r ${llvm_source}/libcxx "$out"
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mkdir -p "$out/libcxxabi"
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cp -r ${llvm_source}/libcxxabi/include "$out/libcxxabi"
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mkdir -p "$out/llvm"
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cp -r ${llvm_source}/llvm/cmake "$out/llvm"
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cp -r ${llvm_source}/llvm/utils "$out/llvm"
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cp -r ${llvm_source}/third-party "$out"
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cp -r ${llvm_source}/runtimes "$out"
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'';
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sourceRoot = "${src.name}/runtimes";
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outputs = [ "out" ] ++ lib.optional (!headersOnly) "dev";
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prePatch = ''
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cd ../libcxx
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chmod -R u+w .
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'';
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patches = [
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./gnu-install-dirs.patch
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];
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postPatch = ''
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cd ../runtimes
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'';
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preConfigure = lib.optionalString stdenv.hostPlatform.isMusl ''
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patchShebangs utils/cat_files.py
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'';
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nativeBuildInputs = [ cmake ninja python3 ]
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++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
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buildInputs =
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lib.optionals (!headersOnly) [ llvm_libcxxabi ]
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++ lib.optionals (!stdenv.hostPlatform.isWasm) [ llvm_libunwind ];
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cmakeFlags = let
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# See: https://libcxx.llvm.org/BuildingLibcxx.html#cmdoption-arg-libcxx-cxx-abi-string
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libcxx_cxx_abi_opt = {
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"c++abi" = "system-libcxxabi";
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"cxxrt" = "libcxxrt";
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}.${llvm_libcxxabi.libName} or (throw "unknown cxxabi: ${llvm_libcxxabi.libName} (${llvm_libcxxabi.pname})");
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in [
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"-DLLVM_ENABLE_RUNTIMES=libcxx"
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"-DLIBCXX_CXX_ABI=${if headersOnly then "none" else libcxx_cxx_abi_opt}"
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"-DLIBCXX_ENABLE_SHARED=OFF"
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"-DLIBCXX_USE_COMPILER_RT=ON"
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# There's precedent for this in llvm-project/libcxx/cmake/caches.
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# In a monorepo build you might do the following in the libcxxabi build:
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# -DLLVM_ENABLE_PROJECTS=libcxxabi;libunwinder
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# -DLIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY=On
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# libcxx appears to require unwind and doesn't pull it in via other means.
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"-DLIBCXX_ADDITIONAL_LIBRARIES=unwind"
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] ++ lib.optional (!headersOnly && llvm_libcxxabi.libName == "c++abi")
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"-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${llvm_libcxxabi.dev}/include/c++/v1"
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++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) [
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"-DLIBCXX_HAS_MUSL_LIBC=1"
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] ++ lib.optionals stdenv.hostPlatform.isWasm [
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"-DLIBCXX_ENABLE_THREADS=OFF"
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"-DLIBCXX_ENABLE_FILESYSTEM=OFF"
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"-DLIBCXX_ENABLE_EXCEPTIONS=OFF"
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"-DUNIX=ON" # Required otherwise libc++ fails to detect the correct linker
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] ++ lib.optionals (headersOnly) [
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# If we're only building the headers we don't actually *need* a functioning
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# C/C++ compiler:
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"-DCMAKE_C_COMPILER_WORKS=ON"
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"-DCMAKE_CXX_COMPILER_WORKS=ON"
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];
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ninjaFlags = lib.optional headersOnly "generate-cxx-headers";
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installTargets = lib.optional headersOnly "install-cxx-headers";
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passthru = {
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isLLVM = true;
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inherit llvm_libcxxabi;
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};
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inherit (utils) meta;
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}
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