# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_prog_bison_version.html
+# https://www.gnu.org/software/autoconf-archive/ax_prog_bison_version.html
# ===========================================================================
#
# SYNOPSIS
# and this notice are preserved. This file is offered as-is, without any
# warranty.
-#serial 2
+#serial 3
AC_DEFUN([AX_PROG_BISON_VERSION],[
AC_REQUIRE([AC_PROG_SED])