core/pkgs/by-name/bp/bpftools/default.nix

{ lib, stdenv, linuxHeaders, libopcodes, libopcodes_2_38, libbfd, libbfd_2_38
, elfutils, readline, zlib, python3, bison, flex }:

stdenv.mkDerivation rec {
  pname = "bpftools";

  inherit (linuxHeaders) version src;

  separateDebugInfo = true;

  patches = [
    # fix unknown type name '__vector128' on ppc64le
    ./include-asm-types-for-ppc64le.patch
  ];

  nativeBuildInputs = [ python3 bison flex ];
  buildInputs = (if (lib.versionAtLeast version "5.20") then [
    libopcodes
    libbfd
  ] else [
    libopcodes_2_38
    libbfd_2_38
  ]) ++ [ elfutils zlib readline ];

  preConfigure = ''
    patchShebangs scripts/bpf_doc.py

    cd tools/bpf
    substituteInPlace ./bpftool/Makefile \
      --replace '/usr/local' "$out" \
      --replace '/usr'       "$out" \
      --replace '/sbin'      '/bin'
  '';

  buildFlags = [ "bpftool" "bpf_asm" "bpf_dbg" ];

  installPhase = ''
    make -C bpftool install
    install -Dm755 -t $out/bin bpf_asm
    install -Dm755 -t $out/bin bpf_dbg
  '';

  meta = with lib; {
    homepage = "https://github.com/libbpf/bpftool";
    description = "Debugging/program analysis tools for the eBPF subsystem";
    license = [ licenses.gpl2 licenses.bsd2 ];
    platforms = platforms.linux;
    maintainers = with maintainers; [ thoughtpolice ];
  };
}