Turning MagicalRecord logging off requires a #define to be made before it is first included in the project, but in the case of a project managed by Cocoapods I have no acces
In my case, I was building a library that depended on MagicalRecord. I didn't want my users to have to add a post_install in their Podfile to silence the noisy logging, so I added it to my podspec instead.
s.prefix_header_contents = '#define MR_ENABLE_ACTIVE_RECORD_LOGGING 0'
This automatically adds this #define
statement to Pods-prefix.pch, which silences MagicalRecord logging in projects that use my pod.