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|
{ lib, stdenv, llvm_meta, cmake, python3
, monorepoSrc, runCommand, fetchpatch
, cxx-headers, libunwind, version
, enableShared ? !stdenv.hostPlatform.isStatic
}:
stdenv.mkDerivation rec {
pname = "libcxxabi";
inherit version;
src = runCommand "${pname}-src-${version}" {} ''
mkdir -p "$out"
cp -r ${monorepoSrc}/cmake "$out"
cp -r ${monorepoSrc}/${pname} "$out"
mkdir -p "$out/libcxx/src"
cp -r ${monorepoSrc}/libcxx/cmake "$out/libcxx"
cp -r ${monorepoSrc}/libcxx/include "$out/libcxx"
cp -r ${monorepoSrc}/libcxx/src/include "$out/libcxx/src"
mkdir -p "$out/llvm"
cp -r ${monorepoSrc}/llvm/cmake "$out/llvm"
cp -r ${monorepoSrc}/llvm/utils "$out/llvm"
cp -r ${monorepoSrc}/runtimes "$out"
'';
sourceRoot = "${src.name}/runtimes";
outputs = [ "out" "dev" ];
postUnpack = lib.optionalString stdenv.isDarwin ''
export TRIPLE=x86_64-apple-darwin
'' + lib.optionalString stdenv.hostPlatform.isWasm ''
patch -p1 -d llvm -i ${./wasm.patch}
'';
prePatch = ''
cd ../${pname}
chmod -R u+w .
'';
patches = [
./gnu-install-dirs.patch
# https://reviews.llvm.org/D132298, Allow building libcxxabi alone
(fetchpatch {
url = "https://github.com/llvm/llvm-project/commit/e6a0800532bb409f6d1c62f3698bdd6994a877dc.patch";
sha256 = "1xyjd56m4pfwq8p3xh6i8lhkk9kq15jaml7qbhxdf87z4jjkk63a";
stripLen = 1;
})
];
postPatch = ''
cd ../runtimes
'';
nativeBuildInputs = [ cmake python3 ];
buildInputs = lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD && !stdenv.hostPlatform.isWasm) libunwind;
cmakeFlags = [
"-DLLVM_ENABLE_RUNTIMES=libcxxabi"
"-DLIBCXXABI_LIBCXX_INCLUDES=${cxx-headers}/include/c++/v1"
] ++ lib.optionals (stdenv.hostPlatform.useLLVM or false) [
"-DLLVM_ENABLE_LIBCXX=ON"
"-DLIBCXXABI_USE_LLVM_UNWINDER=ON"
] ++ lib.optionals stdenv.hostPlatform.isWasm [
"-DLIBCXXABI_ENABLE_THREADS=OFF"
"-DLIBCXXABI_ENABLE_EXCEPTIONS=OFF"
] ++ lib.optionals (!enableShared) [
"-DLIBCXXABI_ENABLE_SHARED=OFF"
];
preInstall = lib.optionalString stdenv.isDarwin ''
for file in lib/*.dylib; do
# Fix up the install name. Preserve the basename, just replace the path.
installName="$out/lib/$(basename $(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 $(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 ../../${pname}/include/${if stdenv.isDarwin then "*" else "cxxabi.h"} "$dev/include"
'';
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 ];
};
}
|