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{ lib, stdenv, llvm_meta, src, cmake, python3, fixDarwinDylibNames, version
, libcxxabi
, 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
}:
stdenv.mkDerivation rec {
pname = if headersOnly then "cxx-headers" else "libcxx";
inherit version;
inherit src;
sourceRoot = "source/libcxx";
outputs = [ "out" ] ++ lib.optional (!headersOnly) "dev";
patches = [
./gnu-install-dirs.patch
] ++ lib.optionals stdenv.hostPlatform.isMusl [
../../libcxx-0001-musl-hacks.patch
];
preConfigure = lib.optionalString stdenv.hostPlatform.isMusl ''
patchShebangs utils/cat_files.py
'';
nativeBuildInputs = [ cmake python3 ]
++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
buildInputs = lib.optionals (!headersOnly) [ libcxxabi ];
cmakeFlags = [ "-DLIBCXX_CXX_ABI=libcxxabi" ]
++ 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";
buildFlags = lib.optional headersOnly "generate-cxx-headers";
installTargets = lib.optional headersOnly "install-cxx-headers";
# At this point, cxxabi headers would be installed in the dev output, which
# prevents moveToOutput from doing its job later in the build process.
postInstall = lib.optionalString (!headersOnly) ''
mv "$dev/include/c++/v1/"* "$out/include/c++/v1/"
pushd "$dev"
rmdir -p include/c++/v1
popd
'';
passthru = {
isLLVM = true;
};
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 ];
};
}
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