cgal 6.0

- remove FindOpenMesh.cmake
- test with Qt6

Co-authored-by: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Signed-off-by: Rui Chen <rui@chenrui.dev>

Formula/c/cgal.rb

@@ -1,8 +1,8 @@
 class Cgal < Formula
   desc "Computational Geometry Algorithms Library"
   homepage "https://www.cgal.org/"
-  url "/~https://github.com/CGAL/cgal/releases/download/v5.6.1/CGAL-5.6.1.tar.xz"
-  sha256 "cdb15e7ee31e0663589d3107a79988a37b7b1719df3d24f2058545d1bcdd5837"
+  url "/~https://github.com/CGAL/cgal/releases/download/v6.0/CGAL-6.0.tar.xz"
+  sha256 "6b0c9b47c7735a2462ff34a6c3c749d1ff4addc1454924b76263dc60ab119268"
   license "GPL-3.0-or-later"
 
   bottle do
@@ -11,7 +11,7 @@ class Cgal < Formula
   end
 
   depends_on "cmake" => [:build, :test]
-  depends_on "qt@5" => :test
+  depends_on "qt" => :test
   depends_on "boost"
   depends_on "eigen"
   depends_on "gmp"
@@ -38,10 +38,12 @@ def install
       FindLASLIB.cmake
       FindMKL.cmake
       FindOSQP.cmake
-      FindOpenMesh.cmake
       FindSuiteSparse.cmake
     ]
     inreplace inreplace_files.map { |file| lib/"cmake/CGAL"/file }, "/usr/local", HOMEBREW_PREFIX
+
+    # These cause different bottles to be built between macOS and Linux for some reason.
+    %w[README.md readme.md].each do { |file| (buildpath/file).unlink if (buildpath/file).exist? }
   end
 
   test do
@@ -62,7 +64,6 @@ def install
       typename CGAL::Coercion_traits<A,B>::Type
       binary_func(const A& a , const B& b){
           typedef CGAL::Coercion_traits<A,B> CT;
-          CGAL_static_assertion((CT::Are_explicit_interoperable::value));
           typename CT::Cast cast;
           return cast(a)*cast(b);
       }
@@ -75,22 +76,22 @@ def install
         std::istream_iterator<Point> end;
         Triangulation t;
         t.insert(begin, end);
-        if(argc == 3) // do not test Qt5 at runtime
+        if(argc == 3) // do not test Qt6 at runtime
           CGAL::draw(t);
         return EXIT_SUCCESS;
        }
     EOS
     (testpath/"CMakeLists.txt").write <<~EOS
       cmake_minimum_required(VERSION 3.1...3.15)
-      find_package(CGAL COMPONENTS Qt5)
+      find_package(CGAL COMPONENTS Qt6)
       add_definitions(-DCGAL_USE_BASIC_VIEWER -DQT_NO_KEYWORDS)
-      include_directories(surprise BEFORE SYSTEM #{Formula["qt@5"].opt_include})
+      include_directories(surprise BEFORE SYSTEM #{Formula["qt"].opt_include})
       add_executable(surprise surprise.cpp)
-      target_include_directories(surprise BEFORE PUBLIC #{Formula["qt@5"].opt_include})
-      target_link_libraries(surprise PUBLIC CGAL::CGAL_Qt5)
+      target_include_directories(surprise BEFORE PUBLIC #{Formula["qt"].opt_include})
+      target_link_libraries(surprise PUBLIC CGAL::CGAL_Qt6)
     EOS
-    system "cmake", "-L", "-DQt5_DIR=#{Formula["qt@5"].opt_lib}/cmake/Qt5",
-           "-DCMAKE_PREFIX_PATH=#{Formula["qt@5"].opt_lib}",
+    system "cmake", "-L", "-DQt6_DIR=#{Formula["qt"].opt_lib}/cmake/Qt6",
+           "-DCMAKE_PREFIX_PATH=#{Formula["qt"].opt_lib}",
            "-DCMAKE_BUILD_RPATH=#{HOMEBREW_PREFIX}/lib", "-DCMAKE_PREFIX_PATH=#{prefix}", "."
     system "cmake", "--build", ".", "-v"
     assert_equal "15\n15", shell_output("./surprise").chomp