You may have to check out a fresh copy of the SDL source after you
do “make spotless” (fixed in the current development tree).
It is always safe to remove the SDL directory and check out a fresh
copy using the same commands you used to check out the original copy.
(Unless of course you have made local changes that you want to save)
You can use the “cvs diff -u” command to get a unified set of patches
showing you the differences between your source and the development
source repository.