-if test "x$enable_logging" != "xno"; then
- AC_DEFINE(USE_LOG, [1] ,[Use logging/syslog])
+if test "x$enable_logging" = "xyes"; then
+ AC_DEFINE(ENABLE_LOGGING, [1], [System logging.])
+fi
+
+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])