Unverified Commit ec40b045 authored by Randy Eckenrode's avatar Randy Eckenrode
Browse files

darwin.libunwind: improve compatibility with libunwind 

Darwin uses the system unwinder, which is based on the LLVM unwinder.
While it’s mostly API-compatible with libunwind, some packages expect to
find it using `pkg-config`. This package provides a compatible file to
allow those packages to use the system unwinder on Darwin.
parent 7b23be1a

pkgs/os-specific/darwin/libunwind/default.nix

0 → 100644
+28 −0
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{

  lib,

  apple-sdk,

  stdenvNoCC,

}:



stdenvNoCC.mkDerivation (finalAttrs: {

  pname = "libunwind";

  inherit (apple-sdk) version;



  # No `-lunwind` is provided becuase you get it automatically from linking with libSystem.

  # It’s also not possible to link libunwind directly, otherwise. Darwin requires going through libSystem.

  buildCommand = ''

    mkdir -p "$out/lib/pkgconfig"

    cat <<EOF > "$out/lib/pkgconfig/libunwind.pc"

    Name: libunwind

    Description: An implementation of the HP libunwind interface

    Version: ${finalAttrs.version}

    EOF

  '';



  meta = {

    description = "Compatibility package for libunwind on Darwin";

    maintainers = lib.teams.darwin.members;

    platforms = lib.platforms.darwin;

    pkgConfigModules = [ "libunwind" ];

  };

})

pkgs/top-level/darwin-packages.nix

+2 −0
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@@ -169,6 +169,8 @@ impure-cmds // appleSourcePackages // stubs // { 
    propagatedBuildInputs = [ pkgs.darwin.print-reexports ];

  } ../os-specific/darwin/print-reexports/setup-hook.sh;



  libunwind = callPackage ../os-specific/darwin/libunwind { };



  sigtool = callPackage ../os-specific/darwin/sigtool { };



  signingUtils = callPackage ../os-specific/darwin/signing-utils { };