nixpkgs/pkgs/development/compilers/llvm/6/libc++/default.nix

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{ lib, stdenv, fetch, cmake, python3, libcxxabi, fixDarwinDylibNames, version }:
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stdenv.mkDerivation {
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pname = "libc++";
inherit version;
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src = fetch "libcxx" "0rzw4qvxp6qx4l4h9amrq02gp7hbg8lw4m0sy3k60f50234gnm3n";
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postUnpack = ''
unpackFile ${libcxxabi.src}
export LIBCXXABI_INCLUDE_DIR="$PWD/$(ls -d libcxxabi-${version}*)/include"
'';
patches = lib.optionals stdenv.hostPlatform.isMusl [
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../../libcxx-0001-musl-hacks.patch
];
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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="$LIBCXXABI_INCLUDE_DIR")
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'' + lib.optionalString stdenv.hostPlatform.isMusl ''
patchShebangs utils/cat_files.py
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'';
nativeBuildInputs = [ cmake ]
++ lib.optional stdenv.hostPlatform.isMusl python3
++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
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buildInputs = [ libcxxabi ];
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cmakeFlags = [
"-DLIBCXX_LIBCXXABI_LIB_PATH=${libcxxabi}/lib"
"-DLIBCXX_LIBCPPABI_VERSION=2"
"-DLIBCXX_CXX_ABI=libcxxabi"
] ++ lib.optional stdenv.hostPlatform.isMusl "-DLIBCXX_HAS_MUSL_LIBC=1";
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passthru = {
isLLVM = true;
};
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meta = {
homepage = "https://libcxx.llvm.org/";
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description = "A new implementation of the C++ standard library, targeting C++11";
license = with lib.licenses; [ ncsa mit ];
platforms = lib.platforms.unix;
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};
}