Re: AW: AW: [avr-gcc-list] Migrating avrgcc code from 8535 to atmega1 63 ?

[Marek Michalkiewicz]

> I'm using IAR and I just had to recompile everything with the proper
> settings and the correct linker file
> Actually I have two versions of the same software with exactely the same
> source code (size fits for both still)

Easy with avr-gcc too, use -mmcu=atmega163 or -mmcu=at90s8535 and it
just works.  You should specify this option in all avr-gcc commands,
both compile and link (always use the avr-gcc driver, don't run avr-ld
directly).  I'm doing this all the time, no source code changes.

Different interrupt vectors are handled by avr-libc startup code
(all these crt*.o files, one for each MCU type), and the correct
version of libc.a (multilib support) is linked automagically too.

Hope this helps,
Marek