recognize tclsh8.6

diff --git a/configure.ac b/configure.ac
index 6d91bd7ff989739fe6ea61f55dc3eccdaee2b1d5..2f67303cee7f060b388bd248a8f32386e827ac14 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -259,7 +259,7 @@ AC_ARG_WITH(tclsh,
   TCLSH=$withval,)
 
 if test "x$TCLSH" = "x"; then
-  AC_PATH_PROGS(TCLSH,[tclsh8.5 tclsh8.4 tclsh8.3 tclsh])
+  AC_PATH_PROGS(TCLSH,[tclsh8.6 tclsh8.5 tclsh8.4 tclsh8.3 tclsh])
   if test "x$TCLSH" = "x"; then
     AC_MSG_ERROR([Unable to find a tclsh. Tclsh is a required program for building graphviz, independent of wether tcl-based graphviz products are built])
     use_tcl="No (tclsh unavailable)"