Hello,
you cloned the git repository to /usr/local/src/vdr-2.2.0/PLUGINS/src/GIT/xineliboutput but you are trying to run make in /usr/local/src/vdr-2.2.0/PLUGINS/src/xineliboutput
Have another look at the the error message - the text for line 706 in config.c differs from the most recent version: https://projects.vdr-developer.org/git/xineliboutput.git/tree/config.c#n706
Alexander.