common.h
So I got sick with NSLog and wrote myself a simple wrapper around it.
Which you can find here.
The Syntax is the same but the printout is why nicer to read, it looks like this:
2013-09-02 17:00:49.543 AppName[4841:a0b] (FilterAppDelegate.m:15 -[FilterAppDelegate application:didFinishLaunchingWithOptions:]) TEST LOG
So you can see the filename, line number, function and everything else important directly.
2013-09-04