cdt: add package (#4418)

* cdt: add package

* cdt: set macosx shared to true

* cdt: add license

* cdt: one line add_headerfiles

* cdt: use cmake

* cdt: add CDT_USE_AS_COMPILED_LIBRARY

packages/c/cdt/xmake.lua

@@ -0,0 +1,33 @@
+package("cdt")
+    set_homepage("https://artem-ogre.github.io/CDT/")
+    set_description("Constrained Delaunay Triangulation (C++)")
+    set_license("MPL-2.0")
+
+    add_urls("https://github.com/artem-ogre/CDT/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/artem-ogre/CDT.git")
+
+    add_versions("1.4.1", "86df99eb5f02a73eeb8c6ea45765eed0d7f206e8d4d9f6479f77e3c590ae5bb3")
+
+    add_deps("cmake")
+
+    on_install(function (package)
+        os.cd("CDT")
+        local configs = {"-DCDT_USE_AS_COMPILED_LIBRARY=ON"}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:debug() and "Debug" or "Release"))
+        table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <CDT.h>
+            using namespace CDT;
+            void test() {
+                auto cdt = Triangulation<double>{};
+                cdt.insertVertices({
+                    {0.0, 1e38},
+                    {1.0, 1e38},
+                });
+            }
+        ]]}, {configs = {languages = "cxx17"}}))
+    end)