PROBLEM: how to implement focus follow mouse for all windows / apps on MacOS?
CONTEXT: terminal commands such as "defaults write com.apple.terminal FocusFollowsMouse -string true" implement the desired behavior ONLY for terminal windows.
SIMILAR POST: Implement "Mouse Follows Focus" on MacOS
This is the answer: https://github.com/sbmpost/AutoRaise Works perfectly.
For the precise, classic behaviour of "focus follows mouse", without raising the window, it must be compiled with the suggested flags
make CXXFLAGS="-DOLD_ACTIVATION_METHOD -DEXPERIMENTAL_FOCUS_FIRST" && make install
and then run with the options:
/Applications/AutoRaise.app/Contents/MacOS/AutoRaise delay=0 focusDelay=1