the problem is that a .cpp program askes me "ffftw.h" library.
but now I have just remade all and downloaded (just the hundred time) all libraries... and now my cpp program seems working well!!
I can't explain... maybe fink and macports files have added something...
now I will have another check (to be sure).
Sorry for the lost of time but I am afraid of making irreparable mistakes
with my mac.
thank you very very much!