宝塔面板安装php扩展的报错，提示：Cannot find autoconf. Please check your autoconf installation and the $PHP_AUTOCONF environment variable. Then, rerun this script

宝塔面板安装php扩展的报错，提示：Cannot find autoconf. Please check your autoconf installation and the $PHP_AUTOCONF environment variable. Then, rerun this script

如图

出现原因：
缺少 autoconf 组件的依赖
解决方案：
CentOS|RedHat系列

yum install autoconf -y

Ubuntu|Debian系列：

apt-get update  -y
apt-get install autoconf2.13 -y