[root@placebo][~]
$ pecl install channel://pecl.php.net/ssh2-0.10
downloading ssh2-0.10.tgz ...
Starting to download ssh2-0.10.tgz (22,187 bytes)
........done: 22,187 bytes
5 source files, building
running: phpize
Configuring for:
PHP Api Version:         20020918
Zend Module Api No:      20020429
Zend Extension Api No:   20050606
/usr/local/bin/phpize: /tmp/pear/download/ssh2-0.10/build/shtool: /bin/sh: bad interpreter: Permission denied
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