gz-math8: new formula for ionic (#2452)

Signed-off-by: Addisu Z. Taddese <[email protected]>
Co-authored-by: Steve Peters <[email protected]>

Formula/gz-math8.rb

@@ -0,0 +1,71 @@
+class GzMath8 < Formula
+  desc "Math API for robotic applications"
+  homepage "https://gazebosim.org"
+  url "https://github.com/gazebosim/gz-math.git", branch: "main"
+  version "7.999.999-0-20231006"
+  license "Apache-2.0"
+
+  head "https://github.com/gazebosim/gz-math.git", branch: "gz-math8"
+
+  depends_on "cmake" => :build
+  depends_on "doxygen" => :build
+  depends_on "pybind11" => :build
+  depends_on "eigen"
+  depends_on "gz-cmake4"
+  depends_on "gz-utils3"
+  depends_on "[email protected]"
+  depends_on "ruby"
+
+  def install
+    cmake_args = std_cmake_args
+    cmake_args << "-DBUILD_TESTING=OFF"
+    cmake_args << "-DCMAKE_INSTALL_RPATH=#{rpath}"
+
+    # Use build folder
+    mkdir "build" do
+      system "cmake", "..", *cmake_args
+      system "make", "install"
+    end
+
+    (lib/"python3.11/site-packages").install Dir[lib/"python/*"]
+    rmdir prefix/"lib/python"
+  end
+
+  test do
+    (testpath/"test.cpp").write <<-EOS
+      #include "gz/math/SignalStats.hh"
+      int main() {
+        gz::math::SignalMean mean;
+        mean.InsertData(1.0);
+        mean.InsertData(-1.0);
+        return static_cast<int>(mean.Value());
+      }
+    EOS
+    (testpath/"CMakeLists.txt").write <<-EOS
+      cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+      find_package(gz-math8 QUIET REQUIRED)
+      add_executable(test_cmake test.cpp)
+      target_link_libraries(test_cmake gz-math8::gz-math8)
+    EOS
+    # test building with manual compiler flags
+    system ENV.cc, "test.cpp",
+                   "--std=c++14",
+                   "-I#{include}/gz/math8",
+                   "-L#{lib}",
+                   "-lgz-math8",
+                   "-lc++",
+                   "-o", "test"
+    system "./test"
+    # test building with cmake
+    mkdir "build" do
+      system "cmake", ".."
+      system "make"
+      system "./test_cmake"
+    end
+    # check for Xcode frameworks in bottle
+    cmd_not_grep_xcode = "! grep -rnI 'Applications[/]Xcode' #{prefix}"
+    system cmd_not_grep_xcode
+    # check python import
+    system Formula["[email protected]"].opt_bin/"python3.11", "-c", "import gz.math8"
+  end
+end