I would like to suggest that you add a note about
updating the CITY macro for the Makefile.in or
Makefile.am file in the INSTALL file. I read the INSTALL
file and would have built the program without setting
the proper city.
The README file states to update the Makefile. Since
the Makefile is a built object, it probably should not be
modified becasue that change would be lost if the user
runs configure again.