Hi, How to change the compiler options for arduino due (arduino -1.5.7) running on linux machine?

Compiler optimisation for due board

Topic		Replies	Views
Board arduino_due_x_dbg (..) is unknown Error compiling. IDE 1.x	5	6079	May 5, 2021
[solved] Can't program Due with Arduino IDE after "updating the boards" Due	1	1336	May 6, 2021
1.6.4 is great! But how do I set -std=gnu++11 for SAM boards IDE 1.x	1	512	May 5, 2021
Arduino 1.6.7 & Due: package unknown IDE 1.x	4	1178	May 5, 2021
Compiler Error for Arduino Due Due	4	5800	May 6, 2021