I\'m using a powerbook (osx 10.5) and recently downloaded and installed FFTW 3.2 (link text). I\'ve been able to compile and run some simple programs based on the online tut
OK - I finally got this working. I also needed the the GNU Scientific Libraries and ran into similar issues with the architecture setting. For anyone interested, this tutorial goes through how to set up Xcode and link libraries:
https://web.archive.org/web/20101006023300/http://www.boyfarrell.com/learning-curve/gnu-scientific-library-and-xcode-31