How to install PHP-DEV package for PDO_OCI

Hi guru, Hope some kind souls out there can help me out here...I've successfully compile Apache2.2; PHP 5.16 on a Fedora 4 (with the Oracle instant client) machine...My connection to the remote Oracle database is working fine using OCI_CONNECT. My next step is to try out PDO. When I do a "php -m", I didn't see the PDO_OCI module. Hence I downloaded the PDO_OCI-1.0.tgz file and do a pear install. But it comes out an error "ERROR: `phpize' failed". Then I found out that phpize error is because the PHP-DEV package is not install. The problem puzzle me is how do I install PHP5-DEV into my current setup?? I do a Google and can't find any PHP5-DEV package for Fedora4 PHP5.1.6... Any help will be greatly appreciated here... Below is some of the output from my machine: [root@Fedora4 dbtest]# pear install PDO_OCI-1.0.tgz 7 source files, building running: phpize Configuring for: PHP Api Version: 20041225 Zend Module Api No: 20050922 Zend Extension Api No: 220051025 ERROR: `phpize' failed [root@Fedora4 dbtest]# php -v PHP 5.1.6 (cli) (built: Sep 14 2006 12:23:31) Copyright (c) 1997-2006 The PHP Group Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies [root@Fedora4 dbtest]# php -m [PHP Modules] ctype date dom hash iconv libxml oci8 pcre PDO posix Reflection session SimpleXML SPL SQLite standard tokenizer xml xmlreader xmlwriter zlib [Zend Modules] Thanks a million in advance... Choy