> I use avr-gcc and arm-elf-gcc, both version 4.4.3.
> I tryed to invoke gcc with -fstack-usage:
>
> cc1: error: unrecognized command line option "-fstack-usage"
>
> why?

Presumably because the option isn't implemented in this compiler.

> where is that option?

An old version is at http://gcc.gnu.org/ml/gcc-patches/2006-06/msg01008.html

-- 
Eric Botcazou

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