diff --git a/acconfig.h b/acconfig.h
new file mode 100644
index 000000000..d1b828d04
--- /dev/null
+++ b/acconfig.h
@@ -0,0 +1,5 @@
+/* Macros that may be defined by the aclocal.m4 extentions to `configure' 
+   for GNUstep Base Library. */
+
+#undef SYS_AUTOLOAD
+#undef CON_AUTOLOAD