PHP安裝memcache模塊時報錯Cannot find autoconf. Please check……

PHP安裝memcache模塊時報錯Cannot find autoconf. Please check your autoconf installation and the $PHP_AUTOCONF environment variable. Then, rerun this script.

    解決辦法：

 yum install m4
 yum install autoconf

安裝這兩個之後重新phpize不會報錯