Excuse me for somehow overlooking this post! And I would like to also apologize that no one else responded to you, either.
Did you ever resolve your issues with building the CDP source? The portaudio library is required for only a small subset of all CDP programs, as you said, so at the least, it should be relatively straightforward to get things in order. That you are running a 64-bit platform shouldn't be a problem. I assume you're building for Mac OS X?
Regarding your second question, typing "pitch" at my shell, the interaction looks much like this:
$ pitch
CDP Release 7 2014
PITCH OPERATIONS ON A SPECTRAL FILE
USAGE: pitch NAME (mode) infile outfile parameters:
where NAME can be any one of
altharms octmove transp tune pick chordf chord
Type 'pitch altharms' for more info on pitch altharms..ETC.
$
So, indeed, "speed" is not a valid option for this command, so the command is not incorrect. Are you perhaps looking for the MODIFY SPEED process?