nixpkgs/pkgs/development/compilers/llvm/9/libunwind.nix

{ stdenv, version, fetch, cmake, fetchpatch, enableShared ? true }:

stdenv.mkDerivation rec {
  pname = "libunwind";
  inherit version;

  src = fetch pname "1chd1nz4bscrs6qa7p8sqgk5df86ll0frv0f451vhks2w44qsslp";

  nativeBuildInputs = [ cmake ];

  enableParallelBuilding = true;

  cmakeFlags = stdenv.lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF";
}