For shell search provider settings schema.
PKG_CHECK_MODULES(ST, clutter-1.0 gtk+-3.0 libcroco-0.6 >= 0.6.8 x11)
PKG_CHECK_MODULES(TRAY, gtk+-3.0)
PKG_CHECK_MODULES(GVC, libpulse libpulse-mainloop-glib gobject-2.0)
-PKG_CHECK_MODULES(DESKTOP_SCHEMAS, gsettings-desktop-schemas >= 3.5.4)
+PKG_CHECK_MODULES(DESKTOP_SCHEMAS, gsettings-desktop-schemas >= 3.7.2)
AC_MSG_CHECKING([for bluetooth support])
PKG_CHECK_EXISTS([gnome-bluetooth-1.0 >= 3.1.0],