Add efsw (#1060)

* Add efsw

* efsw: Enable BSD support

* Update xmake.lua

* Update xmake.lua

packages/e/efsw/xmake.lua

@@ -0,0 +1,44 @@
+package("efsw")
+    set_homepage("https://github.com/SpartanJ/efsw")
+    set_description("efsw is a C++ cross-platform file system watcher and notifier.")
+    set_license("MIT")
+
+    set_urls("https://github.com/SpartanJ/efsw/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/SpartanJ/efsw.git")
+    add_versions("1.1.0", "a67566d642510e3f571cc0f98d520bd806150362a51cfbc47366ed6c9890722f")
+
+    add_deps("cmake")
+
+    if is_plat("linux", "bsd") then
+        add_syslinks("pthread")
+    elseif is_plat("macosx") then
+        add_frameworks("CoreFoundation", "CoreServices")
+    end
+
+    on_load("windows", function (package)
+        if package:config("shared") then
+            package:add("defines", "EFSW_DYNAMIC")
+        end
+    end)
+
+    on_install("windows", "linux", "mingw", "macosx", "bsd", function (package)
+        local configs = {"-DBUILD_TEST_APP=OFF"}
+        table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:debug() and "Debug" or "Release"))
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            class CustomListener : public efsw::FileWatchListener {
+                void handleFileAction(efsw::WatchID watchid, const std::string& dir, const std::string& filename, efsw::Action action, std::string oldFilename) {}
+            };
+
+            void test() {
+                CustomListener customListener;
+
+                efsw::FileWatcher fileWatcher;
+                fileWatcher.addWatch(".", &customListener);
+            }
+        ]]}, {includes = {"efsw/efsw.hpp"}}))
+    end)