X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=install.el;h=835a47ebbe616eef3ca6780c1341ae067bfef663;hb=3b4f94331ac91f1faa37728ab2d32f7bdbad0195;hp=f2f131e0848a7c5c11a4c47da1fb45edcf8f36ce;hpb=e47c19a9f98b560818385fb4fd7dca6b14f36767;p=elisp%2Fapel.git

diff --git a/install.el b/install.el
index f2f131e..835a47e 100644
--- a/install.el
+++ b/install.el
@@ -148,12 +148,13 @@
 ;;; @ detect install path
 ;;;
 
+;; install to shared directory (maybe "/usr/local")
 (defvar install-prefix
   (if (or running-emacs-18 running-xemacs
-	  (string= system-configuration-options "NT")) ; for Meadow
+	  (and (boundp 'system-configuration-options) ; 19.29 or later
+	       (string= system-configuration-options "NT"))) ; for Meadow
       (expand-file-name "../../.." exec-directory)
-    (expand-file-name "../../../.." data-directory)
-    )) ; install to shared directory (maybe "/usr/local")
+    (expand-file-name "../../../.." data-directory)))
 
 (defvar install-elisp-prefix
   (if (>= emacs-major-version 19)