mac下phpize编译提示Cannot find autoconf解决办法

/usr/bin/phpize
Configuring for:
PHP Api Version:         20121113
Zend Module Api No:      20121212
Zend Extension Api No:   220121212
Cannot find autoconf. Please check your autoconf installation and the
$PHP_AUTOCONF environment variable. Then, rerun this script.
复制代码

$ brew install autoconf
复制代码

$ ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
复制代码