--- ext/rb-fsevent-legacy/extconf.rb
+++ ext/rb-fsevent-legacy/extconf.rb	2025-03-29 04:59:07.000000000 +0800
@@ -7,6 +7,6 @@
   raise "Compiling this for something other than OSX doesn't make sense."
 end
 
-$CFLAGS="-g -O0 -pipe -fno-common"
+$CFLAGS="-g -O0 -pipe -fno-common -fms-extensions -Wno-error=int-conversion"
 
 create_makefile("rb-fsevent-legacy/fs_native_stream")