http://bugs.winehq.org/show_bug.cgi?id=20432
--- Comment #2 from Dmitry Gorbachev d.g.gorbachev@gmail.com 2009-10-20 17:37:32 --- For now, there are no problems. If the --preprocessor option will be implemented, using gcc in the role of an external preprocessor can cause errors. I just want to notify in advance about possible future problems.
This syntax is recognized by windres.