autoconf: bump AC_PREREQ to 2.64

The acinclude.m4 uses AS_VAR_APPEND macro. This marco is introduced in 2.64[1], hence we bump AC_PREREQ to 2.64 to avoid undefined marco on 2.63 autoconf.

[1] https://lists.gnu.org/archive/html/autoconf/2009-07/msg00079.html

Signed-off-by: Huáng Jùnliàng <i@jhuang.me>
Signed-off-by: Allan McRae <allan@archlinux.org>
This commit is contained in:
Huáng Jùnliàng 2018-02-08 15:25:29 +08:00 committed by Allan McRae
parent b3a1f89611
commit 03ce7cc4eb

View file

@ -1,7 +1,7 @@
# -*- Autoconf -*- # -*- Autoconf -*-
# Process this file with autoconf to produce a configure script. # Process this file with autoconf to produce a configure script.
# Minimum version of autoconf required # Minimum version of autoconf required
AC_PREREQ(2.62) AC_PREREQ(2.64)
# UPDATING VERSION NUMBERS FOR RELEASES # UPDATING VERSION NUMBERS FOR RELEASES
# #