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https://github.com/NixOS/nixpkgs.git
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d90fb1c038
LLVM 11 libcxxabi has some flags to support usage in the Darwin stdenv, in particular, `standalone` and `withLibunwind`. Darwin stdenv needs the `standalone` flag because its `hostPlatform` set doesn't have `useLLVM` set to true. And it needs `withLibunwind` to explicitly disable including `libunwind` as a build input. We also prefix `install_name_tool` in case we're cross-compiling.
80 lines
2.7 KiB
Nix
80 lines
2.7 KiB
Nix
{ lib, stdenv, llvm_meta, cmake, python3, fetch, libcxx, libunwind, llvm, version
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, enableShared ? !stdenv.hostPlatform.isStatic
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, standalone ? stdenv.hostPlatform.useLLVM or false
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, withLibunwind ? !stdenv.isDarwin && !stdenv.isFreeBSD && !stdenv.hostPlatform.isWasm
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}:
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stdenv.mkDerivation {
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pname = "libcxxabi";
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inherit version;
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src = fetch "libcxxabi" "1l4idd8npbkm168d26kqn529yv3npsd8f2dm8a7iwyknj7iyivw8";
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outputs = [ "out" "dev" ];
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postUnpack = ''
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unpackFile ${libcxx.src}
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mv libcxx-* libcxx
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unpackFile ${llvm.src}
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mv llvm-* llvm
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'' + lib.optionalString stdenv.isDarwin ''
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export TRIPLE=x86_64-apple-darwin
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'' + lib.optionalString stdenv.hostPlatform.isMusl ''
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patch -p1 -d libcxx -i ${../../libcxx-0001-musl-hacks.patch}
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'' + lib.optionalString stdenv.hostPlatform.isWasm ''
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patch -p1 -d llvm -i ${./wasm.patch}
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'';
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patches = [
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./gnu-install-dirs.patch
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];
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nativeBuildInputs = [ cmake python3 ];
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buildInputs = lib.optional withLibunwind libunwind;
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cmakeFlags = lib.optionals standalone [
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"-DLLVM_ENABLE_LIBCXX=ON"
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"-DLIBCXXABI_USE_LLVM_UNWINDER=ON"
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] ++ lib.optionals stdenv.hostPlatform.isWasm [
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"-DLIBCXXABI_ENABLE_THREADS=OFF"
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"-DLIBCXXABI_ENABLE_EXCEPTIONS=OFF"
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] ++ lib.optionals (!enableShared) [
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"-DLIBCXXABI_ENABLE_SHARED=OFF"
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];
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installPhase = if stdenv.isDarwin
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then ''
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for file in lib/*.dylib; do
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# this should be done in CMake, but having trouble figuring out
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# the magic combination of necessary CMake variables
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# if you fancy a try, take a look at
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# https://gitlab.kitware.com/cmake/community/-/wikis/doc/cmake/RPATH-handling
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${stdenv.cc.targetPrefix}install_name_tool -id $out/$file $file
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done
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make install
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install -d 755 $out/include
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install -m 644 ../include/*.h $out/include
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''
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else ''
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install -d -m 755 $out/include $out/lib
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install -m 644 lib/libc++abi.a $out/lib
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install -m 644 ../include/cxxabi.h $out/include
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'' + lib.optionalString enableShared ''
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install -m 644 lib/libc++abi.so.1.0 $out/lib
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ln -s libc++abi.so.1.0 $out/lib/libc++abi.so
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ln -s libc++abi.so.1.0 $out/lib/libc++abi.so.1
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'';
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meta = llvm_meta // {
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homepage = "https://libcxxabi.llvm.org/";
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description = "Provides C++ standard library support";
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longDescription = ''
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libc++abi is a new implementation of low level support for a standard C++ library.
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'';
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# "All of the code in libc++abi is dual licensed under the MIT license and
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# the UIUC License (a BSD-like license)":
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license = with lib.licenses; [ mit ncsa ];
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maintainers = llvm_meta.maintainers ++ [ lib.maintainers.vlstill ];
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};
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}
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