It is not very intuitive how to disable ARC on MULTIPLE files, for a while I was do it one by one until a figured out how to do that.
- Select desired files at Target/Build Phases/Compile Sources in Xcode (CMD+click or Shift+click)
- PRESS ENTER (double click will reset the selection, so it does’t work)
- Type -fno-objc-arc
- Press Enter or Done