Seeing similar error to commit id '997be5c27' with the inability to find the libvirt_event_poll_purge_timeout_semaphore symbol causing a virusbtest failure. Signed-off-by: John Ferlan <jferlan(a)redhat.com&gt; --- This is a really strange one... I applied Michal's patches, the error occurred. I rebuilt cleanly and the error went away. This morning after apply the top of tree, the error returns. Just changing the Makefile.am doesn't always "clean" up the error, but after a make clean and rebuild the error goes away. Perhaps has to do with some build dependency on the virusbmock that virusbtest has that somehow isn't being recognized in the Makefile.am... But I'm not sure what magic incantation needs to be levied at the Makefile.am in order to tell it to do the right thing! tests/Makefile.am | 1 + 1 file changed, 1 insertion(+) diff --git a/tests/Makefile.am b/tests/Makefile.am index 7149a86..32a7282 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -1204,6 +1204,7 @@ virusbmock_la_SOURCES = virusbmock.c virusbmock_la_CFLAGS = $(AM_CFLAGS) virusbmock_la_LDFLAGS = $(MOCKLIBS_LDFLAGS) virusbmock_la_LIBADD = $(MOCKLIBS_LIBS) \ + $(PROBES_O) \ ../src/libvirt_util.la virnetdevbandwidthmock_la_SOURCES = \