Cannot find autoconf. Please check your autoconf installation

Hi,

Are you trying to install php modules like pdo and getting the following error.?.

pecl install pdo
WARNING: "pecl/PDO" is deprecated in favor of "channel://http://svn.php.net/viewvc/php/php-src/trunk/ext/pdo//ext/PDO"
WARNING: channel "pecl.php.net" has updated its protocols, use "channel-update pecl.php.net" to update
downloading PDO-1.0.3.tgz ...
Starting to download PDO-1.0.3.tgz (52,613 bytes)
.............done: 52,613 bytes
12 source files, building
running: 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 is set correctly and then rerun this script.

ERROR: `phpize' failed

then you can fix it by

# 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

Then you can install pdo and pdo_mysql without any issues.

Source: http://www.spiration.co.uk/post/1385/Cannot-find-autoconf.-Please-check-your-autoconf-installation
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