The -mmcu option in gcc.

stf92 · 09-17-2013, 11:43 PM

Slackware 14.0

Hi: could somebody give me an example command line for the use of the -mmcu option in gcc?:

Code:

     AVR Options

       -mmcu=mcu
           Specify Atmel AVR instruction set architectures (ISA) or MCU type.

           For a complete list of mcu values that are supported by avr-gcc,
           see the compiler output when called with the --help=target command
           line option.  The default for this option is@tie{}"avr2".

           GCC supports the following AVR devices and ISAs:

           "avr2"
               "Classic" devices with up to 8@tie{}KiB of program memory.
               mcu@tie{}= "at90c8534", "at90s2313", "at90s2323", "at90s2333",
               "at90s2343", "at90s4414", "at90s4433", "at90s4434",
               "at90s8515", "at90s8535", "attiny22", "attiny26".

           "avr25"
               "Classic" devices with up to 8@tie{}KiB of program memory and
               with the "MOVW" instruction.  mcu@tie{}= "at86rf401",
               "ata6289", "attiny13", "attiny13a", "attiny2313",
               "attiny2313a", "attiny24", "attiny24a", "attiny25",
               "attiny261", "attiny261a", "attiny4313", "attiny43u",

firstfire · 09-18-2013, 06:37 AM

Hi.

Look at this Makefile used to build sanguino bootloader.