notification-daemon-xfce compilation error

[Sander Poks]

I hope that this is the right place to discuss Xfce's plugins too.

I installed libsexy and thinking I had covered all of it's
dependencies, configured notification-daemon-xfce 0.3.7 with

./configure --prefix=/usr/local --enable-gradient-look
--disable-close-button

While that went fine, make gives me errors that seem to be connected to
glib.

This is where it seems to start going wrong:

notification_daemon_xfce-daemon.o: In function `g_once_init_enter':
/usr/local/include/glib-2.0/glib/gthread.h:338: undefined reference to `g_once_init_enter_impl'
notification_daemon_xfce-daemon.o: In function `notify_daemon_get_type':
/usr/src/notification-daemon-xfce-0.3.7/src/daemon/daemon.c:124: undefined reference to `g_once_init_leave'
/usr/local/lib/libgobject-2.0.so: undefined reference to `g_regex_unref'
/usr/local/lib/libgobject-2.0.so: undefined reference to `g_regex_ref'
collect2: ld returned 1 exit status
make[4]: *** [notification-daemon-xfce] Error 1
make[4]: Leaving directory `/usr/src/notification-daemon-xfce-0.3.7/src/daemon'
make[3]: *** [all] Error 2
make[3]: Leaving directory `/usr/src/notification-daemon-xfce-0.3.7/src/daemon'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/usr/src/notification-daemon-xfce-0.3.7/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/src/notification-daemon-xfce-0.3.7'
make: *** [all] Error 2

I have glib 2.14.2 installed, afaik libgobject-2.0.so comes from there.

Using Slackware 12.0.

Hopefully someone can help me out, thanks in advance.
Yogiz