It's better  not to link libpython directly when building extension modules on OS X. This patch tells the linker not to complain about undefined symbols when building the libftdi extension module with LINK_PYTHON_LIBRARY=OFF.
I also think LINK_PYTHON_LIBRARY=OFF would be a good default for OS X.
There's a related PR to Homebrew, the OS X package manager. 
Re: [PATCH] Allow LINK_PYTHON_LIBRARY=OFF on Darwin
I'd like to know if there is a way(an api or other) to query the baudrate setting on ftdi devices. It could be interesting for reverse engeenering and debug old devices out off production that haven't working sw for new S.O.(I'm retrocomputer enthusiast).