avr-g++: error: missing device or architecture after '-mmcu='

[khgm]

Hi, arduino-avr-mega.txt

i got that message when i try to compile with fqbn ardunio:avr:mega parameter. I spent several hours to debug where can be the problem without success. Attached the detailed output and parameters.

Thanks for the advice/idea where to dig deeper Gabor

[steve3d]

first, please make sure that you are using arduino ide 1.8+ then you will need to find the missing parameter from Arduino IDE by enabling the verbose output.

[steve3d]

and I think for your board, the correct fqbn should be set as arduino:avr:mega:cpu=atmega2560

[khgm]

that fqbn worked, thanks