Will C::B support Free Pascal Compiler?
Yes, if there is a volunteer, who is eager to write and support it :)
Here we are c++ people :)
http://forums.next.codeblocks.org/index.php/topic,14745.0.html
If you want a Free Pascal IDE, use Lazarus at http://www.lazarus.freepascal.org - this is a better IDE for Free Pascal than CB could ever hope to be.