“Cannot run C compiled programs” error when installing PDO PHP module

I have a cPanel server I want to install some packages on. I connected to the server as root and ran the following commands to update and delete all the existing repositories:

yum update
yum clean all
rm -f /etc/yum.repos.d/*
rm -rf /var/cache/yum/*

My last command was to install the PDO PHP module, but that's when I got an error:

root@linux [~/TMP]# 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"
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
building in /var/tmp/pear-build-root/PDO-1.0.3
running: /root/tmp/pear/PDO/configure
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for a sed that does not truncate output... /bin/sed
checking for cc... cc
checking for C compiler default output file name... a.out
checking whether the C compiler works... configure: error: in `/var/tmp/pear-build-root/PDO-1.0.3':
configure: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details.
ERROR: `/root/tmp/pear/PDO/configure' failed
root@linux [~/TMP]# pecl install bdoNo releases available for package "pecl.php.net/bdo"
install failed

What causes this error? How can I fix it?

Edit: Also, when I run yum install php*, after checking dependencies I get this:

--> Finished Dependency Resolution
Error: Package: rrdtool-php-1.3.8-6.el6.x86_64 (base)
           Requires: php(zend-abi) = 20090626

Edit: I uploaded my config.log and config.status files