Fun times, indeed!
The headers issue turns up because, in adding Swift files, I have to make the minimum OS version 10.9 rather than 10.8. For some reason, that makes an include line like:
fails to compile, with the message "fatal error: 'tr1/functional' file not found".
After extensive investigation, the only factor that makes this fail to compile is the switch of minimum OS version. I have had warning messages about libstdc++ before, when it was 10.8, so I presume something changed at that point, but I have no clue as to where to look to solve this issue. Hopefully someone else has seen and resolved this one!
SIL-PNG, Ukarumpa, Eastern Highlands, Papua New Guinea
Mussau-Emira language, New Ireland Province, Papua New Guinea