It looks like your headers are outdated

[tpoechtrager]

I am getting a lot of problems with boost::threads, for example:

Undefined symbols for architecture armv7s: "boost::this_thread::get_id()", referenced from: ...

It looks like the headers are from 1.49 instead of 1.53, no headers were updated when you've updated the pre-built binaries, see c275666

Using the headers from 1.53 solves that problem.

[mz2]

Thanks, sounds feasible. Do you feel like making a pull request to update? :)

[tpoechtrager]

Better not, because I use https://code.google.com/p/ios-toolchain-based-on-clang-for-linux/ for compiling stuff for iOS, so I can't test it with xcode, sorry.