-PKG_CHECK_MODULES(DBUS, [dbus-1 >= 1.3.2], have_dbus=yes, have_dbus=no])
-AS_IF([test "$have_dbus" = "yes"], [ AC_DEFINE(HAVE_DBUS, [1], [Define if dbus-1 is available]) ])
+have_dbus=no
+AC_ARG_ENABLE(dbus, AS_HELP_STRING([--disable-dbus], [disable usage of dbus-1 in tests]))
+AS_IF([test "x$enable_dbus" != "xno"], [
+ PKG_CHECK_MODULES(DBUS, [dbus-1 >= 1.3.2],
+ [AC_DEFINE(HAVE_DBUS, 1, [Define if dbus-1 library is available]) have_dbus=yes],
+ [have_dbus=no])
+ AS_IF([test "x$have_dbus" = "xno" -a "x$enable_dbus" = "xyes"],
+ [AC_MSG_ERROR([*** dbus-1 support requested but libraries not found])])])