checking GTK_CFLAGS... -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/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include checking GTK_LIBS... -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgdk_pixbuf-2.0 -lm -lpangocairo-1.0 -lpango-1.0 -lcairo -lgobject-2.0 -lgmodule-2.0 -ldl -lglib-2.0 checking for libxfcegui4-1.0 >= 4.2.0... not found *** The required package libxfcegui4-1.0 was not found on your system. *** Please install libxfcegui4-1.0 (atleast version 4.2.0) or adjust *** the PKG_CONFIG_PATH environment variable if you *** installed the package in a nonstandard prefix so that *** pkg-config is able to find it. !!! Please attach the config.log to your bug report: !!! /var/tmp/portage/xfce-mcs-plugins-4.2.2/work/xfce-mcs-plugins-4.2.2/config.log !!! ERROR: xfce-base/xfce-mcs-plugins-4.2.2 failed. !!! Function econf, Line 495, Exitcode 0 !!! econf failed !!! If you need support, post the topmost build error, NOT this status message. See the TinderBox Log for complete output: http://tinderbox.gentoo.stealer.net/xfce-base/xfce-mcs-plugins-4.2.2-200602191024-failed/
This is fixed in the 4.2.3.x release.