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{ lib, stdenv, llvm_meta, version
, monorepoSrc, runCommand
, cmake
, ninja
, python3
, enableShared ? !stdenv.hostPlatform.isStatic
}:
stdenv.mkDerivation rec {
pname = "libunwind";
inherit version;
# I am not so comfortable giving libc++ and friends the whole monorepo as
# requested, so I filter it to what is needed.
src = runCommand "${pname}-src-${version}" {} ''
mkdir -p "$out"
cp -r ${monorepoSrc}/cmake "$out"
cp -r ${monorepoSrc}/${pname} "$out"
mkdir -p "$out/libcxx"
cp -r ${monorepoSrc}/libcxx/cmake "$out/libcxx"
cp -r ${monorepoSrc}/libcxx/utils "$out/libcxx"
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";
postInstall = lib.optionalString (enableShared && !stdenv.hostPlatform.isDarwin) ''
# libcxxabi wants to link to libunwind_shared.so (?).
ln -s $out/lib/libunwind.so $out/lib/libunwind_shared.so
'';
outputs = [ "out" "dev" ];
nativeBuildInputs = [ cmake ninja python3 ];
cmakeFlags = [
"-DLLVM_ENABLE_RUNTIMES=libunwind"
] ++ lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF";
meta = llvm_meta // {
# Details: https://github.com/llvm/llvm-project/blob/main/libunwind/docs/index.rst
homepage = "https://clang.llvm.org/docs/Toolchain.html#unwind-library";
description = "LLVM's unwinder library";
longDescription = ''
The unwind library provides a family of _Unwind_* functions implementing
the language-neutral stack unwinding portion of the Itanium C++ ABI (Level
I). It is a dependency of the C++ ABI library, and sometimes is a
dependency of other runtimes.
'';
};
}
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