diff -dru Percona-Server-5.5.27-rel29.0.orig/include/my_global.h Percona-Server-5.5.27-rel29.0/include/my_global.h
--- Percona-Server-5.5.27-rel29.0.orig/include/my_global.h	2012-10-11 20:00:57.000000000 +0200
+++ Percona-Server-5.5.27-rel29.0/include/my_global.h	2012-10-26 23:05:43.000000000 +0200
@@ -347,7 +347,7 @@
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
-#ifdef HAVE_SYS_TIMEB_H
+#if defined(HAVE_SYS_TIMEB_H) && !defined(__FreeBSD__)
 #include <sys/timeb.h>				/* Avoid warnings on SCO */
 #endif
 #if TIME_WITH_SYS_TIME
diff -dru Percona-Server-5.5.27-rel29.0.orig/plugin/percona-pam-for-mysql/src/auth_pam_common.h Percona-Server-5.5.27-rel29.0/plugin/percona-pam-for-mysql/src/auth_pam_common.h
--- Percona-Server-5.5.27-rel29.0.orig/plugin/percona-pam-for-mysql/src/auth_pam_common.h	2012-10-11 20:00:57.000000000 +0200
+++ Percona-Server-5.5.27-rel29.0/plugin/percona-pam-for-mysql/src/auth_pam_common.h	2012-10-26 23:07:27.000000000 +0200
@@ -31,7 +31,13 @@
 
 #include <security/pam_appl.h>
 #include <security/pam_modules.h>
+
+#ifdef __FreeBSD__
+#include <security/pam_constants.h>
+#include <string.h>
+#else
 #include <security/pam_misc.h>
+#endif
 
 #include <mysql/plugin.h>
 #include <mysql/plugin_auth.h>