dnl Each prefix corresponds to a source tarball which users might have
dnl downloaded in a newer version and would like to overwrite.
PKG_CHECK_MODULES([LIBSN], [libstartup-notification-1.0])
-PKG_CHECK_MODULES([XCB], [xcb xcb-xkb xcb-xinerama xcb-randr])
+PKG_CHECK_MODULES([XCB], [xcb xcb-xkb xcb-xinerama xcb-randr xcb-shape])
PKG_CHECK_MODULES([XCB_UTIL], [xcb-event xcb-util])
PKG_CHECK_MODULES([XCB_UTIL_CURSOR], [xcb-cursor])
PKG_CHECK_MODULES([XCB_UTIL_KEYSYMS], [xcb-keysyms])