PKG_CHECK_MODULES(LIB, gtk+-2.0 >= $GTK_REQUIRED libgnomeui-2.0 >= $LIBGNOMEUI_REQUIRED)
PKG_CHECK_MODULES(BACKEND, gtk+-2.0 >= $GTK_REQUIRED)
PKG_CHECK_MODULES(FRONTEND_CORE, gtk+-2.0 >= $GTK_REQUIRED libgnomeui-2.0 >= $LIBGNOMEUI_REQUIRED libglade-2.0 poppler-glib >= $POPPLER_REQUIRED)
PKG_CHECK_MODULES(POPPLER, poppler-glib >= $POPPLER_REQUIRED)
PKG_CHECK_MODULES(LIB, gtk+-2.0 >= $GTK_REQUIRED libgnomeui-2.0 >= $LIBGNOMEUI_REQUIRED)
PKG_CHECK_MODULES(BACKEND, gtk+-2.0 >= $GTK_REQUIRED)
PKG_CHECK_MODULES(FRONTEND_CORE, gtk+-2.0 >= $GTK_REQUIRED libgnomeui-2.0 >= $LIBGNOMEUI_REQUIRED libglade-2.0 poppler-glib >= $POPPLER_REQUIRED)
PKG_CHECK_MODULES(POPPLER, poppler-glib >= $POPPLER_REQUIRED)