Nota bene: you should always upgrade fink before upgrading OS X.
http://www.finkproject.org/download/srcdist.php?phpLang=en :
$ sudo xcodebuild -license
Install the CLI:
$ sudo xcode-select –install
…
$ fink reinstall fink
Before running the fink utility you should “always” start gcc, in order to clear any problems with Xcode.
If your fink activities run into a gcc problem like this:
…, you currently have gcc (unknown version) selected.
… – remember I told you to run gcc (resp. sudo gcc) on its own!
Afterwards your fink activities will work smoothly again.
- http://fink.sourceforge.net/news/#2016-09-20%20fink-0.41.0%20released – for me these instructions also work for upgrading from 10.11 to 10.12 (not just from “10.9 or 10.10”, as the instructions they themselves)
Some of my installations need “sudo fink”, some of them work with a simple “fink” (w/o an explicit “sudo”). (How to change this??? Is this really true???)