--- src/cxx_supportlib/vendor-modified/libev/ev.c.orig	2025-07-13 19:43:52 UTC
+++ src/cxx_supportlib/vendor-modified/libev/ev.c
@@ -421,6 +421,11 @@
 
 #if EV_USE_INOTIFY
 # include <sys/statfs.h>
+# ifdef __FreeBSD__
+#  include <sys/mount.h>
+# else
+#  include <sys/statfs.h>
+# endif
 # include <sys/inotify.h>
 /* some very old inotify.h headers don't have IN_DONT_FOLLOW */
 # ifndef IN_DONT_FOLLOW
@@ -2753,7 +2758,7 @@ ev_recommended_backends (void) EV_THROW
 {
   unsigned int flags = ev_supported_backends ();
 
-#ifndef __NetBSD__
+#if !defined(__NetBSD__) && !defined(__FreeBSD__)
   /* kqueue is borked on everything but netbsd apparently */
   /* it usually doesn't work correctly on anything but sockets and pipes */
   flags &= ~EVBACKEND_KQUEUE;