Compiling on Gentoo

Hello,

i try to install monbar under Gentoo. The configure script run without any problems, but the compiling stoped with error.

<compile>
Making all in src
make[1]: Entering directory `/usr/local/src/minbar-0.2.1/src'
if gcc -DPACKAGE_NAME=\"minbar\" -DPACKAGE_TARNAME=\"minbar\" -DPACKAGE_VERSION=\"0.2.1\" -DPACKAGE_STRING=\"minbar\ 0.2.1\" -DPACKAGE_BUGREPORT=\"mailto:<email address hidden>\" -DPACKAGE=\"minbar\" -DVERSION=\"0.2.1\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_NOTIFY=1 -DUSE_GCONF=1 -DHAVE_LOCALE_H=1 -DHAVE_LC_MESSAGES=1 -DHAVE_BIND_TEXTDOMAIN_CODESET=1 -DHAVE_GETTEXT=1 -DHAVE_DCGETTEXT=1 -DENABLE_NLS=1 -DGETTEXT_PACKAGE=\"minbar\" -I. -I. -DG_LOG_DOMAIN=\"Minbar\" -DGNOMELOCALEDIR=\""/usr/local/share/locale"\" -DMINBAR_PIXMAPSDIR=\"/usr/local/share/pixmaps\" -DMINBAR_DATADIR=\"/usr/local/share/minbar\" -pthread -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libpng15 -DLIBNOTIFY_VERSION_MAJOR=0 -DLIBNOTIFY_VERSION_MINOR=7 -DLIBNOTIFY_VERSION_MICRO=4 -DORBIT2=1 -pthread -I/usr/include/gconf/2 -I/usr/include/orbit-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -pthread -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng15 -I/usr/include/libdrm -I/usr/include/libglade-2.0 -I/usr/include/libxml2 -I/usr/include/gstreamer-0.10 -I/usr/include/libgnomecanvas-2.0 -I/usr/include/gail-1.0 -I/usr/include/libart-2.0 -Wall -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wno-sign-compare -g -O2 -MT minbar-main.o -MD -MP -MF ".deps/minbar-main.Tpo" -c -o minbar-main.o `test -f 'main.c' || echo './'`main.c; \
then mv -f ".deps/minbar-main.Tpo" ".deps/minbar-main.Po"; else rm -f ".deps/minbar-main.Tpo"; exit 1; fi
main.c: In Funktion »create_notification«:
main.c:1263:11: Fehler: zu viele Argumente für Funktion »notify_notification_new«
/usr/include/libnotify/notification.h:114:21: Anmerkung: declared here
main.c:1264:2: Warnung: Implizite Deklaration der Funktion »notify_notification_attach_to_status_icon«
main.c:1264:2: Warnung: Geschachtelte extern-Deklaration von »notify_notification_attach_to_status_icon«
main.c: In Funktion »activate_url«:
main.c:1557:9: Warnung: ignoring return value of »system«, declared with attribute warn_unused_result
make[1]: *** [minbar-main.o] Fehler 1
make[1]: Leaving directory `/usr/local/src/minbar-0.2.1/src'
make: *** [all-recursive] Fehler 1
</compile>

Has someone a idea what is the problem?

Regards
Silvio