X-Git-Url: http://git.kpe.io/?p=kmrcl.git;a=blobdiff_plain;f=macros.lisp;h=1239eb46b6d7d7cce32b073edc15d0d53a23efe8;hp=bf2714b86d441eec6f9d0c4bbce5a64f7f539d73;hb=6edcb840b821b4be95925fe39ce34ee5e1f229d7;hpb=93ac7eed8f69f19013472f078b544be145619ff5

diff --git a/macros.lisp b/macros.lisp
index bf2714b..1239eb4 100644
--- a/macros.lisp
+++ b/macros.lisp
@@ -254,3 +254,9 @@
 	      (pprint exp)))
      (format t "~%~%")
      (values)))
+
+(defmacro defconst (symbol value &optional doc)
+   `(defconstant ,symbol (if (boundp ',symbol)
+                             (symbol-value ',symbol)
+                             ,value)
+     ,@(when doc (list doc))))