Foreign Function Warnings??

["M. G. Slack" <slack@starbase.mitre.org>]

I'm loading foreign functions into my mcl environment however I get these
warnings which I 1) dont fully understand 2) I would like to either cause them
not to happen or 3) suppress them with 
(setf *suppress-warnings-of-unusual-size* t) or sum such global.

thnaks,
marc

Here is what the warnings look like:


;warning: Duplicate defninition for "memcpy"
; while executing: ccl::ff-readobj