{ lib, stdenv, fetch, cmake, python3, libcxxabi, fixDarwinDylibNames, version , enableShared ? !stdenv.hostPlatform.isStatic }: stdenv.mkDerivation { pname = "libc++"; inherit version; src = fetch "libcxx" "0kmhcapm2cjwalyiqasj9dmqbw59mcwdl8fgl951wg7ax84b8hj4"; postUnpack = '' unpackFile ${libcxxabi.src} export LIBCXXABI_INCLUDE_DIR="$PWD/$(ls -d libcxxabi-${version}*)/include" ''; patches = stdenv.lib.optional stdenv.hostPlatform.isMusl ../../libcxx-0001-musl-hacks.patch; prePatch = '' substituteInPlace lib/CMakeLists.txt --replace "/usr/lib/libc++" "\''${LIBCXX_LIBCXXABI_LIB_PATH}/libc++" ''; preConfigure = '' # Get headers from the cxxabi source so we can see private headers not installed by the cxxabi package cmakeFlagsArray=($cmakeFlagsArray -DLIBCXX_CXX_ABI_INCLUDE_PATHS="$LIBCXXABI_INCLUDE_DIR") '' + lib.optionalString stdenv.hostPlatform.isMusl '' patchShebangs utils/cat_files.py ''; nativeBuildInputs = [ cmake ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl python3 ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames; buildInputs = [ libcxxabi ] ; cmakeFlags = [ "-DLIBCXX_LIBCXXABI_LIB_PATH=${libcxxabi}/lib" "-DLIBCXX_LIBCPPABI_VERSION=2" "-DLIBCXX_CXX_ABI=libcxxabi" ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl "-DLIBCXX_HAS_MUSL_LIBC=1" ++ stdenv.lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF" ; enableParallelBuilding = true; passthru = { isLLVM = true; }; meta = { homepage = "https://libcxx.llvm.org/"; description = "A new implementation of the C++ standard library, targeting C++11"; license = with stdenv.lib.licenses; [ ncsa mit ]; platforms = stdenv.lib.platforms.unix; }; }