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{ lib, stdenv, llvm_meta, fetch, fetchpatch, cmake, python3, llvm, fixDarwinDylibNames, version
, cxxabi ? if stdenv.hostPlatform.isFreeBSD then libcxxrt else libcxxabi
, libcxxabi, libcxxrt
, enableShared ? !stdenv.hostPlatform.isStatic
}:
assert stdenv.isDarwin -> cxxabi.pname == "libcxxabi";
stdenv.mkDerivation {
pname = "libcxx";
inherit version;
src = fetch "libcxx" "1rgqsqpgi0vkga5d7hy0iyfsqgzfz7q1xy7afdfa1snp1qjks8xv";
postUnpack = ''
unpackFile ${libcxxabi.src}
mv libcxxabi-* libcxxabi
unpackFile ${llvm.src}
mv llvm-* llvm
'';
outputs = [ "out" "dev" ];
patches = [
(fetchpatch {
# Backported from LLVM 12, avoids clashes with commonly used "block.h" header.
url = "https://github.com/llvm/llvm-project/commit/19bc9ea480b60b607a3e303f20c7a3a2ea553369.patch";
sha256 = "sha256-aWa66ogmPkG0xHzSfcpD0qZyZQcNKwLV44js4eiun78=";
stripLen = 1;
})
./gnu-install-dirs.patch
] ++ lib.optionals stdenv.hostPlatform.isMusl [
../../common/libcxx/libcxx-0001-musl-hacks.patch
];
# Prevent errors like "error: 'foo' is unavailable: introduced in macOS yy.zz"
postPatch = ''
substituteInPlace include/__config \
--replace "# define _LIBCPP_USE_AVAILABILITY_APPLE" ""
'';
preConfigure = lib.optionalString stdenv.hostPlatform.isMusl ''
patchShebangs utils/cat_files.py
'';
nativeBuildInputs = [ cmake python3 ]
++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
buildInputs = [ cxxabi ];
cmakeFlags = [
"-DLIBCXX_CXX_ABI=${cxxabi.pname}"
] ++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) "-DLIBCXX_HAS_MUSL_LIBC=1"
++ lib.optional (stdenv.hostPlatform.useLLVM or false) "-DLIBCXX_USE_COMPILER_RT=ON"
++ lib.optionals stdenv.hostPlatform.isWasm [
"-DLIBCXX_ENABLE_THREADS=OFF"
"-DLIBCXX_ENABLE_FILESYSTEM=OFF"
"-DLIBCXX_ENABLE_EXCEPTIONS=OFF"
] ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF"
# TODO: this is a bit of a hack to cross compile to Apple Silicon. libcxx
# starting with 11 enables CMAKE_BUILD_WITH_INSTALL_NAME_DIR which requires
# platform setup for rpaths. In cmake, this is enabled when macos is newer
# than 10.5. However CMAKE_SYSTEM_VERSION is set to empty (TODO: why?)
# which prevents the conditional configuration, and configure fails. The
# value here corresponds to `uname -r`. If stdenv.hostPlatform.release is
# not null, then this property will be set via mkDerivation (TODO: how can
# we set this?).
++ lib.optional (
stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 &&
stdenv.hostPlatform != stdenv.buildPlatform
) "-DCMAKE_SYSTEM_VERSION=20.1.0";
preInstall = lib.optionalString (stdenv.isDarwin) ''
for file in lib/*.dylib; do
if [ -L "$file" ]; then continue; fi
baseName=$(basename $(${stdenv.cc.targetPrefix}otool -D $file | tail -n 1))
installName="$out/lib/$baseName"
abiName=$(echo "$baseName" | sed -e 's/libc++/libc++abi/')
for other in $(${stdenv.cc.targetPrefix}otool -L $file | awk '$1 ~ "/libc\\+\\+abi" { print $1 }'); do
${stdenv.cc.targetPrefix}install_name_tool -change $other ${cxxabi}/lib/$abiName $file
done
done
'';
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 ];
};
}
|