+AC_ARG_ENABLE([extras],
+ AS_HELP_STRING([--enable-extras], [enable extras with external dependencies]),
+ [], [enable_extras=no])
+if test "x$enable_extras" = xyes; then
+ PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.7.0 gobject-2.0 >= 2.7.0])
+ AC_SUBST([GLIB_CFLAGS])
+ AC_SUBST([GLIB_LIBS])
+fi
+AM_CONDITIONAL([ENABLE_EXTRAS], [test "x$enable_extras" = xyes])
+