note 91731 added to ssh2.installation

I'm writing in console: --------------------------------------------------------- #: pear install pecl/ssh2-0.11.0 --------------------------------------------------------- That's is Answer console: --------------------------------------------------------- downloading ssh2-0.11.0.tgz ... Starting to download ssh2-0.11.0.tgz (22,884 bytes) ........done: 22,884 bytes 5 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. --------------------------------------------------------- I didn't know how doing... Can someone suggestions? _________________________________________________________ ---- Server IP: 194.24.174.37 Probable Submitter: 83.11.51.32 ---- Manual Page -- http://www.php.net/manual/en/ssh2.installation.php Edit -- https://master.php.net/note/edit/91731 Del: integrated -- https://master.php.net/note/delete/91731/integrated Del: useless -- https://master.php.net/note/delete/91731/useless Del: bad code -- https://master.php.net/note/delete/91731/bad+code Del: spam -- https://master.php.net/note/delete/91731/spam Del: non-english -- https://master.php.net/note/delete/91731/non-english Del: in docs -- https://master.php.net/note/delete/91731/in+docs Del: other reasons-- https://master.php.net/note/delete/91731 Reject -- https://master.php.net/note/reject/91731 Search -- https://master.php.net/manage/user-notes.php