mgcp: Calculate the jitter with the formula/code from the appendix
Use a usec timestamp for the local time. The seconds to usec will
swap over to the lower bits but this appears to be correct. The
CLOCK_MONOTONIC is used to fulfill the RFC 3550 requirement even
if it is a bit slower than the gettimeofday.
Make sure to initialize transit in a way that the first transit
time will be 0. Otherwise the jitter will contain the difference
of the localtime and the remote time.
diff --git a/openbsc/src/osmo-bsc_mgcp/Makefile.am b/openbsc/src/osmo-bsc_mgcp/Makefile.am
index 166e83d..3f58d5d 100644
--- a/openbsc/src/osmo-bsc_mgcp/Makefile.am
+++ b/openbsc/src/osmo-bsc_mgcp/Makefile.am
@@ -6,5 +6,5 @@
osmo_bsc_mgcp_SOURCES = mgcp_main.c
osmo_bsc_mgcp_LDADD = $(top_builddir)/src/libcommon/libcommon.a \
- $(top_builddir)/src/libmgcp/libmgcp.a \
+ $(top_builddir)/src/libmgcp/libmgcp.a -lrt \
$(LIBOSMOVTY_LIBS) $(LIBOSMOCORE_LIBS)