Cannot find autoconf. Please check your autoconf installation

Occurs when running/usr/local/webserver/php/bin/phpize:
Configuring for:
PHP Api version:          20041225
Zend Module API no:      20060613
Zend Extension API no:   220060519
Cannot find autoconf. Please check your autoconf installation and the
$PHP _autoconf environment variable. Then, rerun the this script.
# cd/usr/src
# wget http://ftp.gnu.org/gnu/m4/ m4-1.4.9.tar.gz
# TAR-ZVXF m4-1.4.9.tar.gz
# cd m4-1.4.9/
#./configure && make && make install
# CD. /
# wget http://ftp.gnu.org/gnu/autoconf/autoconf-2.62.tar.gz
# tar-zvxf autoconf-2.62.tar.gz
# CD autoconf-2.62/
#/configure && make && make install
I use the second simpler approach:
# Yum install M4
# Yum install autoconf

This article is from the "Boyhack" blog, make sure to keep this source http://461205160.blog.51cto.com/274918/1733427

Cannot find autoconf. Please check your autoconf installation