xfce4-panel-4.9.0 build failure on FreeBSD 10.0-CURRENT

[Conrad J. Sabatier]

Just tried compiling xfce4-panel-4.9.0, but got a failure in
plugins/clock/clock.c, due to the lack of the type "sigval_t", which
FreeBSD does not define in either <signal.h> or <sys/signal.h>.

static void
clock_plugin_timeout_expired (sigval_t info)

I tried substituting 'union sigval' (which does contain the member
sival_ptr used in this function), and the build succeeded, but the
clock applet now crashes repeatedly on startup.

Any clues, anyone?

Thanks!

-- 
Conrad J. Sabatier
conrads at cox.net