clipper2: add package (#2535)

packages/c/clipper2/xmake.lua

@@ -0,0 +1,41 @@
+package("clipper2")
+    set_homepage("https://github.com/AngusJohnson/Clipper2")
+    set_description("Polygon Clipping and Offsetting - C++, C# and Delphi")
+    set_license("BSL-1.0")
+
+    add_urls("https://github.com/AngusJohnson/Clipper2/archive/refs/tags/Clipper2_$(version).tar.gz",
+             "https://github.com/AngusJohnson/Clipper2.git")
+
+    add_versions("1.2.2", "e893e3560383744a13b896225a1ae97cf910fa30125cad66264b18446b9f931e")
+
+    add_configs("use_z", {description = "Build Clipper2Z", default = "OFF", type = "string", values = {"ON", "OFF", "ONLY"}})
+
+    if is_plat("linux") then
+        add_syslinks("m")
+    end
+
+    add_deps("cmake")
+
+    on_install(function (package)
+        local configs = {"-DCLIPPER2_UTILS=OFF", "-DCLIPPER2_EXAMPLES=OFF", "-DCLIPPER2_TESTS=OFF"}
+        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"))
+        table.insert(configs, "-DCLIPPER2_USINGZ=" .. package:config("use_z"))
+        if package:config("use_z") ~= "OFF" then
+            package:add("defines", "USINGZ")
+        end
+
+        os.cd("CPP")
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <clipper2/clipper.h>
+            using namespace Clipper2Lib;
+            void test() {
+                Paths64 subject, clip, solution;
+                subject.push_back(MakePath({100, 50, 10, 79, 65, 2, 65, 98, 10, 21}));
+            }
+        ]]}, {configs = {languages = "c++17"}}))
+    end)