Create xmake.lua (#794)

packages/l/libsigc++/xmake.lua

@@ -0,0 +1,39 @@
+package("libsigc++")
+
+    set_homepage("https://libsigcplusplus.github.io/libsigcplusplus")
+    set_description("Callback framework for C++")
+    set_license("LGPL-3.0-or-later")
+
+    add_urls("https://download.gnome.org/sources/libsigc++/$(version).tar.xz", {version = function (version)
+        return version:major() .. "." .. version:minor() .. "/libsigc++-" .. version
+    end})
+    add_versions("3.0.7", "bfbe91c0d094ea6bbc6cbd3909b7d98c6561eea8b6d9c0c25add906a6e83d733")
+
+    add_deps("meson", "ninja")
+    if is_plat("linux") then
+        add_deps("m4")
+    end
+
+    add_includedirs("include/sigc++-3.0", "lib/sigc++-3.0/include")
+
+    on_install("macosx", "linux", function (package)
+        local configs = {"-Dbuild-examples=false"}
+        table.insert(configs, "-Ddefault_library=" .. (package:config("shared") and "shared" or "static"))
+        import("package.tools.meson").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+        #include <iostream>
+        #include <string>
+        #include <sigc++/sigc++.h>
+        void on_print(const std::string& str) {
+          std::cout << str;
+        }
+        void test() {
+          sigc::signal<void(const std::string&)> signal_print;
+          signal_print.connect(sigc::ptr_fun(&on_print));
+          signal_print.emit("hello world\\n");
+        }
+        ]]}, {configs = {languages = "c++17"}}))
+    end)