Xcode 4 build doesn't work

[CelticMinstrel]

Most of the problems are easy to solve, but the cppcodec dependency will not compile in Xcode 4, so an alternative will be needed. Perhaps use Base64 routines from the Mac toolkit (eg NSData)?

[NQNStudios]

I don't know if this would be better or worse than NSData, but I think MacOS provides a base64 program which could be a subprocess. A little nastier, but maybe quicker to integrate? I have no idea.

[CelticMinstrel]

I'd kinda prefer something in CoreFoundation or similar rather than NSData (as that doesn't require using a .mm file), but I think both are probably preferable to a subprocess.