Add Mac and Windows file watcher monitor.

Makefile

@@ -17,9 +17,9 @@ fswatch := dep/lib/libfswatch.a
 DEPS += $(fswatch)
 OBJECTS += $(fswatch)
 $(fswatch):
-	cd dep && $(WGET) "https://github.com/emcrisostomo/fswatch/releases/download/1.14.0/fswatch-1.14.0.tar.gz"
-	cd dep && $(SHA256) fswatch-1.14.0.tar.gz 44d5707adc0e46d901ba95a5dc35c5cc282bd6f331fcf9dbf9fad4af0ed5b29d
-	cd dep && $(UNTAR) fswatch-1.14.0.tar.gz
+	cd $(WGET) "https://github.com/emcrisostomo/fswatch/releases/download/1.14.0/fswatch-1.14.0.tar.gz"
+	cd $(SHA256) fswatch-1.14.0.tar.gz 44d5707adc0e46d901ba95a5dc35c5cc282bd6f331fcf9dbf9fad4af0ed5b29d
+	cd dep && $(UNTAR) ../fswatch-1.14.0.tar.gz
 	cd dep/fswatch-1.14.0 && $(CONFIGURE) --enable-shared=no
 	cd dep/fswatch-1.14.0 && $(MAKE)
 	cd dep/fswatch-1.14.0 && $(MAKE) install

src/Prototype.cpp

@@ -147,8 +147,12 @@ struct Prototype : Module {
 		// Watch file
 		FSW_STATUS err = fsw_init_library();
 		if (err == FSW_OK) {
-#ifdef ARCH_LIN
+#if defined ARCH_LIN
 			fsw_monitor_type type = inotify_monitor_type;
+#elif defined ARCH_MAC
+			fsw_monitor_type type = fsevents_monitor_type;
+#elif defined ARCH_WIN
+			fsw_monitor_type type = windows_monitor_type;
 #endif
 			fsw = fsw_init_session(type);
 			fsw_add_path(fsw, this->path.c_str());