avr/prgspace problem and arduino1.5.1r2 using adruino due

I'm trying to use the MPU-6050 code from Jeff Rowberg in the FreeIMU library (MPU6050_raw.ino). I've modified references from MPU6050 to MPU60X0 and included the SPI library in the sketch. When I compile the sketch using arduino1.5.1r2 for an Arduino Mega2560, it works fine. However when I compile the sketch for an Arduino Due, I get the following error:

fatal error: avr/prgspace.h: No such file or directory

Any help would be appreciated

Gerry

You have a DUE question? It belongs in the DUE forum. Down there, farther.