well, looks like Frank was right, this is the answer I received from the Ubuntu mailing list

-------- Original Message -------- Subject: Re: several ./configure errors : no tcl header found

On Thu, Dec 23, 2004 at 05:37:36PM +0100, altern wrote:

i have tried to install few packages i usually use on Ubuntu with few success. They are, PD, Audacity, wxpython. This is the PD error at the bottom of the mesage, however i have tcl 8.4.

You need 'tcl8.4-dev'