--- aclocal.m4	03 Mar 2005 15:03:30 +0100	1.44
+++ aclocal.m4	07 Mar 2005 17:29:39 +0100	
@@ -62,6 +62,14 @@
   AC_MSG_RESULT(${XEMACS})
   AC_SUBST(XEMACS)
   AC_SUBST(EMACS_FLAVOR)
+
+if test "${prefix}" = NONE -o -z "${prefix}"
+then
+   tmpprefix="${prefix}"
+   AC_PREFIX_PROGRAM(${EMACS})
+   emacsprefix="${prefix}"
+   prefix="${tmpprefix}"
+fi
 ])
 
 AC_DEFUN(EMACS_CHECK_VERSION, [