--- configure.ac.orig	2017-01-10 10:20:51 UTC
+++ configure.ac
@@ -172,6 +172,7 @@ case "${host_os}" in
     # barrier code, this may be fixed in 5.3, stay tuned.
     USE_BARRIER="no"
     USE_MD5SUM=0
+    JACK_DO_NOT_MLOCK=0
     ;;
   openbsd*)
     # pthread_barrier* not implemented