--- libraries/libmdb/mdb.c	2012-02-29 19:37:09.000000000 +0200
+++ libraries/libmdb/mdb.c	2012-03-13 23:44:12.000000000 +0200
@@ -157,6 +157,9 @@
 #define UNLOCK_MUTEX_W(env)	sem_post((env)->me_wmutex)
 #define fdatasync(fd)	fsync(fd)
 #else
+#ifdef __FreeBSD__
+#define fdatasync(fd)   fsync(fd)
+#endif
 #ifdef ANDROID
 #define fdatasync(fd)	fsync(fd)
 #endif