[webizen]

They are not part of php source so you can NOT do --enable or --with to compile them. Refer to their own document for compile/install with php.

eAccelerator: https://eaccelerator.net/wiki/InstallFromSource
APC: http://www.php.net/manual/en/apc.installation.php
xCache: http://xcache.lighttpd.net/wiki/InstallFromSource