Currently the wx port is broken because the BUILDING_ON_* macros are defined in the *Prefix.h files on Mac, which are only used by XCode for the Apple Mac port. To fix this, I've moved the macros into Platform.h and updated the Mac port's JSCore and WebCore projects to pull them from there. For parts of the Mac port that do not use config.h / Platform.h, I've left the defines in the *Prefix.h header but updated them to match the ones defined in Platform.h.
Created attachment 28663 [details] Moves and tweaks the BUILDING_ON_* macros to fix non-Apple builds
Created attachment 28677 [details] Updated patch that uses the Platform.h defines in WebKit/mac as well.
Comment on attachment 28677 [details] Updated patch that uses the Platform.h defines in WebKit/mac as well. r=me
Landed in r41764, thanks!