If I compile a sketch for the Arduino Mega:
Sketch uses 1804 bytes (0%) of program storage space. Maximum is 253952 bytes. Global variables use 188 bytes (2%) of dynamic memory, leaving 8004 bytes for local variables. Maximum is 8192 bytes.
If I compile the same sketch for the Arduino Due:
Sketch uses 26304 bytes (5%) of program storage space. Maximum is 524288 bytes.
Why is the global variables part not supported for the Due, it seems to me it's quite important (even more than the sketch size).
Or can I enable this option somehow? (and if yes, how)