hyperscan: build chimera in static build

{ lib, stdenv, fetchFromGitHub, cmake, ragel, python3

, util-linux, fetchpatch

{ lib

, stdenv

, fetchFromGitHub

, cmake

, ragel

, python3

, util-linux

, pkg-config

, boost

, pcre

, withStatic ? false # build only shared libs by default, build static+shared if true

}:

# NOTICE: pkg-config, pcap and pcre intentionally omitted from build inputs

#         pcap used only in examples, pkg-config used only to check for pcre

#         which is fixed 8.41 version requirement (nixpkgs have 8.42+, and

#         I not see any reason (for now) to backport 8.41.

stdenv.mkDerivation (finalAttrs: {

  pname = "hyperscan";

  version = "5.4.2";

  buildInputs = [ boost ];

  nativeBuildInputs = [

    cmake ragel python3 util-linux

    cmake ragel python3 util-linux pkg-config

  ];

  cmakeFlags = [

  ++ lib.optional (withStatic) "-DBUILD_STATIC_AND_SHARED=ON"

  ++ lib.optional (!withStatic) "-DBUILD_SHARED_LIBS=ON";

  # hyperscan CMake is completely broken for chimera builds when pcre is compiled

  # the only option to make it build - building from source

  # In case pcre is built from source, chimera build is turned on by default

  preConfigure = lib.optional withStatic ''

    mkdir -p pcre

    tar xvf ${pcre.src} --strip-components 1 -C pcre

  '';

  postPatch = ''

    sed -i '/examples/d' CMakeLists.txt

    substituteInPlace libhs.pc.in \

    runHook preCheck

    bin/unit-hyperscan

    ${lib.optionalString withStatic ''bin/unit-chimera''}

    runHook postCheck

  '';