I must have had twice your headache setting up the ATI Stream SDK on Linux for the first time. I'm guessing you downloaded it as a single archive from ATI's site?
Try setting the ATISTREAMSDKROOT environment variable to point to the directory where you extracted the SDK, since those compilation errors are most likely the result of the Stream compiler not being able to find the Stream libraries to link against.

Also, this document was extremely useful in getting the SDK set up. I wish I had found that before I started my install, it would have saved me a lot of trouble.