add detection for wish8.6

diff --git a/configure.ac b/configure.ac
index 2e3c4a66b63be2bbb2d8fbb684415edeb4a45829..aefbdd4c1da75f4ff05838503aeab8e688b1933b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1496,7 +1496,7 @@ if test "x$use_tk" = "x"; then
         [AC_HELP_STRING([--with-wish=PROG], [use a specific wish])],
         WISH=$withval,)
     if test "x$WISH" = "x"; then
-        AC_PATH_PROGS(WISH,[wish8.5 wish8.4 wish8.3 wish])
+        AC_PATH_PROGS(WISH,[wish8.6 wish8.5 wish8.4 wish8.3 wish])
         if test "x$WISH" = "x"; then
             AC_MSG_WARN([Unable to find a wish. The Tk packages will not be built])
             use_tk="No (wish not found)"