Compiling error with APC for php5 - debian

Installing APC php5 cache from pear is a pretty easy task:

apt-get install php-pear
apt-get install php5-dev build-essential
pecl install apc

However, if the last step fails with the following errors,

'apc_regex' has no member named 'preg'
'apc_regex' has no member named 'nreg'

you are missing the perl regular expression libraries on your system!

Installing can be done with

apt-get install libpcre3-dev

as root user.

pecl install apc
once again will then hopefully work.