Pestilential behaviour of gcc3.3 on Macs

Yes I know this is really Apple's fault, but according to http://developer.apple.com/documentation/ReleaseNotes/DeveloperTools/GCC3.ht...

The GCC 3.3 preprocessor inserts a new pragma, #pragma GCC set_debug_pwd, as part of the new Distributed Builds feature. (See below.) This may surprise tools and scripts that depended on the exact form of preprocessed output from GCC. These scripts should be rewritten to ignore unrecognized pragmas.

Would it be possible for GHC to ignore this line? Otherwise ghc -cpp is going to fall over with gcc3.3 on Macs. Of course in the ideal world I know we should be using Template Haskell.