gammaray 2.2.0 (new formula)

Closes Homebrew/homebrew#33850.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/gammaray.rb

@@ -0,0 +1,35 @@
+require "formula"
+
+class Gammaray < Formula
+  homepage "http://www.kdab.com/kdab-products/gammaray/"
+  url "https://github.com/KDAB/GammaRay/archive/v2.2.0.tar.gz"
+  sha1 "c6055ae24b67465528b1747f2ac291adcd805a8e"
+
+  option "without-qt4", "Build against Qt5 instead of Qt4 (default)"
+  option "with-vtk", "Build with VTK-with-Qt support, for object 3D visualizer"
+
+  needs :cxx11
+
+  depends_on "cmake" => :build
+  depends_on "qt" if build.with? "qt4"
+  depends_on "qt5" if build.without? "qt4"
+  depends_on "graphviz" => :recommended
+  # VTK needs to have Qt support, and it needs to match GammaRay's
+  depends_on "homebrew/science/vtk" => [:optional, ((build.with? "qt4") ? "with-qt" : "with-qt5")]
+
+  def install
+    args = std_cmake_args
+    args << "-DGAMMARAY_ENFORCE_QT4_BUILD=" + ((build.with? "qt4") ? "ON" : "OFF")
+    args << "-DCMAKE_DISABLE_FIND_PACKAGE_VTK=" + ((build.without? "vtk") ? "ON" : "OFF" )
+    args << "-DCMAKE_DISABLE_FIND_PACKAGE_Graphviz=" + ((build.without? "graphviz") ? "ON" : "OFF" )
+
+    mkdir "build" do
+      system "cmake", "..", *args
+      system "make", "install"
+    end
+  end
+
+  test do
+    assert_match /^qt/, %x[#{bin}/gammaray --list-probes].chomp
+  end
+end