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{ lib, stdenv, llvm_meta, version, fetch, fetchpatch, cmake, llvm
, enableShared ? !stdenv.hostPlatform.isStatic
}:
stdenv.mkDerivation rec {
pname = "libunwind";
inherit version;
src = fetch pname "035dsxs10nyiqd00q07yycvmkjl01yz4jdlrjvmch8klxg4pyjhp";
postUnpack = ''
unpackFile ${llvm.src}
cmakeFlagsArray=($cmakeFlagsArray -DLLVM_PATH=$PWD/$(ls -d llvm-*))
'';
patches = [
./gnu-install-dirs.patch
] ++ lib.optionals (stdenv.hostPlatform.useLLVM or false) [
# removes use of `new` that require libc++
(fetchpatch {
url = "https://github.com/llvm-mirror/libunwind/commit/34a45c630d4c79af403661d267db42fbe7de1178.patch";
sha256 = "0n0pv6jvcky8pn3srhrf9x5kbnd0d2kia9xlx2g590f5q0bgwfhv";
})
# cleans up remaining libc++ dependencies (mostly header inclusions)
(fetchpatch {
url = "https://github.com/llvm-mirror/libunwind/commit/e050272d2eb57eb4e56a37b429a61df2ebb8aa3e.patch";
sha256 = "170mwmj0wf40iyk1kzdpaiy36rz9n8dpl881h4h7s5da0rh51xya";
includes = [ "src/libunwind.cpp" "src/UnwindCursor.hpp" ];
})
];
outputs = [ "out" "dev" ];
nativeBuildInputs = [ cmake ];
cmakeFlags = lib.optionals (!enableShared) [
"-DLIBUNWIND_ENABLE_SHARED=OFF"
] ++ lib.optionals (stdenv.hostPlatform.useLLVM or false) [
"-DLLVM_ENABLE_LIBCXX=ON"
];
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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