libsigrok.rb

class Libsigrok < Formula
  desc "Drivers for logic analyzers and other supported devices"
  homepage "https://sigrok.org/"
  # libserialport is LGPL3+
  license all_of: ["GPL-3.0-or-later", "LGPL-3.0-or-later"]

  stable do
    url "https://github.com/sigrokproject/libsigrok/archive/refs/tags/libsigrok-0.5.2.zip"
    sha256 "9f3d4ae6023787f3c00ccb2a81d9b124474fc57286ff91037d8a33e6124129f3"

    resource "libserialport" do
      url "https://github.com/sigrokproject/libserialport/archive/refs/tags/libserialport-0.1.1.zip"
      sha256 "e25b278676cfd6819d7e323af4caad2e38c30bc4352b6fa27496b251c351aba1"
    end
  end

  livecheck do
    url "https://sigrok.org/wiki/Downloads"
    regex(/href=.*?libsigrok[._-]v?(\d+(?:\.\d+)+)\.t/i)
  end

  head do
    url "https://github.com/sigrokproject/libsigrok.git", branch: "master"
    
    resource "libserialport" do
      url "https://github.com/sigrokproject/libserialport.git", branch: "master"
    end
  end

  depends_on "autoconf" => :build
  depends_on "autoconf-archive" => :build
  depends_on "automake" => :build
  depends_on "doxygen" => :build
  depends_on "graphviz" => :build
  depends_on "libtool" => :build
  depends_on "pkg-config" => [:build, :test]
  depends_on "sdcc" => :build
  depends_on "swig" => :build
  depends_on "glib"
  depends_on "glibmm@2.66"
  depends_on "hidapi"
  depends_on "libftdi"
  depends_on "libusb"
  depends_on "libzip"
  depends_on "nettle"
  depends_on "numpy"
  depends_on "pygobject3"
  depends_on "python@3.11"

  def python3
    "python3.11"
  end

  def install
    resource("libserialport").stage do
      if build.head? || !File.exist?("configure")
        system "./autogen.sh"
      else
        system "autoreconf", "--force", "--install", "--verbose"
      end

      mkdir "build" do
        system "../configure", *std_configure_args
        system "make", "install"
      end
    end

    # We need to use the Makefile to generate all of the dependencies
    # for setup.py, so the easiest way to make the Python libraries
    # work is to adjust setup.py's arguments here.
    prefix_site_packages = prefix/Language::Python.site_packages(python3)
    inreplace "Makefile.am" do |s|
      s.gsub!(/^(setup_py =.*setup\.py .*)/, "\\1 --no-user-cfg")
      s.gsub!(
        /(\$\(setup_py\) install)/,
        "\\1 --single-version-externally-managed --record=installed.txt --install-lib=#{prefix_site_packages}",
      )
    end

    if build.head? || !File.exist?("configure")
      system "./autogen.sh"
    else
      system "autoreconf", "--force", "--install", "--verbose"
    end

    mkdir "build" do
      ENV["PYTHON"] = python3
      ENV.prepend_path "PKG_CONFIG_PATH", lib/"pkgconfig"
      args = %w[
        --disable-java
        --disable-ruby
        --enable-bindings
        --enable-cxx
      ]
      system "../configure", *std_configure_args, *args
      system "make"
      system "make", "install"
    end
  end

  test do
    (testpath/"test.c").write <<~EOS
      #include <libsigrok/libsigrok.h>

      int main() {
        struct sr_context *ctx;
        if (sr_init(&ctx) != SR_OK) {
           exit(EXIT_FAILURE);
        }
        if (sr_exit(ctx) != SR_OK) {
           exit(EXIT_FAILURE);
        }
        return 0;
      }
    EOS
    flags = shell_output("#{Formula["pkg-config"].opt_bin}/pkg-config --cflags --libs libsigrok").strip.split
    system ENV.cc, "test.c", "-o", "test", *flags
    system "./test"

    system python3, "-c", <<~EOS
      import sigrok.core as sr
      sr.Context.create()
    EOS
  end
end