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{ lib, stdenv, llvm_meta, cmake, python3, fetch, libcxx, libunwind, llvm, version
, enableShared ? !stdenv.hostPlatform.isStatic
, standalone ? stdenv.hostPlatform.useLLVM or false
, withLibunwind ? !stdenv.isDarwin && !stdenv.hostPlatform.isWasm
}:
stdenv.mkDerivation {
pname = "libcxxabi";
inherit version;
src = fetch "libcxxabi" "1l4idd8npbkm168d26kqn529yv3npsd8f2dm8a7iwyknj7iyivw8";
outputs = [ "out" "dev" ];
postUnpack = ''
unpackFile ${libcxx.src}
mv libcxx-* libcxx
unpackFile ${llvm.src}
mv llvm-* llvm
'' + lib.optionalString stdenv.isDarwin ''
export TRIPLE=x86_64-apple-darwin
'' + lib.optionalString stdenv.hostPlatform.isMusl ''
patch -p1 -d libcxx -i ${../../common/libcxx/libcxx-0001-musl-hacks.patch}
'' + lib.optionalString stdenv.hostPlatform.isWasm ''
patch -p1 -d llvm -i ${../../common/libcxxabi/wasm.patch}
'';
patches = [
./gnu-install-dirs.patch
];
nativeBuildInputs = [ cmake python3 ];
buildInputs = lib.optional withLibunwind libunwind;
cmakeFlags = lib.optionals standalone [
"-DLLVM_ENABLE_LIBCXX=ON"
"-DLIBCXXABI_USE_LLVM_UNWINDER=ON"
] ++ lib.optionals stdenv.hostPlatform.isWasm [
"-DLIBCXXABI_ENABLE_THREADS=OFF"
"-DLIBCXXABI_ENABLE_EXCEPTIONS=OFF"
] ++ lib.optionals (!enableShared) [
"-DLIBCXXABI_ENABLE_SHARED=OFF"
];
preInstall = lib.optionalString stdenv.isDarwin ''
for file in lib/*.dylib; do
if [ -L "$file" ]; then continue; fi
# Fix up the install name. Preserve the basename, just replace the path.
installName="$out/lib/$(basename $(${stdenv.cc.targetPrefix}otool -D $file | tail -n 1))"
# this should be done in CMake, but having trouble figuring out
# the magic combination of necessary CMake variables
# if you fancy a try, take a look at
# https://gitlab.kitware.com/cmake/community/-/wikis/doc/cmake/RPATH-handling
${stdenv.cc.targetPrefix}install_name_tool -id $installName $file
# cc-wrapper passes '-lc++abi' to all c++ link steps, but that causes
# libcxxabi to sometimes link against a different version of itself.
# Here we simply make that second reference point to ourselves.
for other in $(${stdenv.cc.targetPrefix}otool -L $file | awk '$1 ~ "/libc\\+\\+abi" { print $1 }'); do
${stdenv.cc.targetPrefix}install_name_tool -change $other $installName $file
done
done
'';
postInstall = ''
mkdir -p "$dev/include"
install -m 644 ../include/${if stdenv.isDarwin then "*" else "cxxabi.h"} "$dev/include"
'';
passthru = {
libName = "c++abi";
};
meta = llvm_meta // {
homepage = "https://libcxxabi.llvm.org/";
description = "Provides C++ standard library support";
longDescription = ''
libc++abi is a new implementation of low level support for a standard C++ library.
'';
# "All of the code in libc++abi is dual licensed under the MIT license and
# the UIUC License (a BSD-like license)":
license = with lib.licenses; [ mit ncsa ];
maintainers = llvm_meta.maintainers ++ [ lib.maintainers.vlstill ];
};
}
|