add libfswatch (#1351)

* add libfswatch

* add pthread

* fix windows

* fix windows

* fix windows

* disable windows

* fix errors

packages/l/libfswatch/xmake.lua

@@ -0,0 +1,28 @@
+package("libfswatch")
+    set_homepage("https://emcrisostomo.github.io/fswatch/")
+    set_description("A cross-platform file change monitor with multiple backends: Apple OS X File System Events, *BSD kqueue, Solaris/Illumos File Events Notification, Linux inotify, Microsoft Windows and a stat()-based backend.")
+
+    add_urls("https://github.com/emcrisostomo/fswatch/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/emcrisostomo/fswatch.git")
+    add_versions("1.17.1", "bd492b6e203b10b30857778f4dd26f688426cd352937bd7779ee245139bafa2b")
+
+    add_deps("cmake")
+
+    if is_plat("macosx") then
+        add_frameworks("CoreFoundation", "CoreServices")
+    elseif is_plat("linux", "bsd") then
+        add_syslinks("pthread", "dl")
+    end
+
+    on_install("linux", "bsd", "macosx", function (package)
+        local configs = {"-DUSE_NLS=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"))
+        io.replace("CMakeLists.txt", "add_subdirectory(test/src)", "", {plain = true})
+        io.replace("CMakeLists.txt", "add_subdirectory(fswatch/src)", "", {plain = true})
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("fsw_add_path", {includes = "libfswatch/c/libfswatch.h"}))
+    end)