--- bee.lua/bee/filewatch/filewatch_osx.cpp
+++ bee.lua/bee/filewatch/filewatch_osx.cpp	2025-08-08 01:54:28.000000000 +0800
@@ -1,6 +1,23 @@
 #include <bee/filewatch/filewatch.h>
 #include <bee/nonstd/unreachable.h>
 
+#include <AvailabilityMacros.h>
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED < 1070
+FSEventStreamCreateFlags  kFSEventStreamCreateFlagFileEvents        = 0x00000010;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemCreated        = 0x00000100;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemRemoved        = 0x00000200;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemInodeMetaMod   = 0x00000400;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemRenamed        = 0x00000800;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemModified       = 0x00001000;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemFinderInfoMod  = 0x00002000;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemChangeOwner    = 0x00004000;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemXattrMod       = 0x00008000;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemIsFile         = 0x00010000;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemIsDir          = 0x00020000;
+FSEventStreamEventFlags   kFSEventStreamEventFlagItemIsSymlink      = 0x00040000;
+#endif
+
 namespace bee::filewatch {
     const char* watch::type() noexcept {
         return "fsevent";