Trying to compile Marlin firmware with U8Glib LCD library to upload to my ATMega 2560, this is the error I got:
Using library U8glib at version 1.19.1 in folder: C:\Program Files (x86)\Arduino\libraries\U8glib fork/exec C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-gcc.exe: The filename or extension is too long. Error compiling for board Arduino/Genuino Mega or Mega 2560.
I have successfully compiled and uploaded before, this is happening only after setting a change to incorporate U8Glib. I have tried installing it manually, from the IDE, no change.