mac下phpize编译提示Cannot find autoconf解决办法
在 mac 下 phpize 编译扩展时，出现如下报错：
Cannot find autoconf. Please check your autoconf installation and the
$PHP_AUTOCONF environment variable. Then, rerun this script.
phpize
phpize编译php扩展时提示 Cannot find config.m4
利用phpize编译PHP扩展时，发现报错 Cannot find config.m4.