On 01/05/2021 01:11, David Kelly wrote:
> Has been a long time for me but Once Upon A Time it wasn’t just a matter
> of “not using functions in the library”. AVR-gcc required primatives
> other than startup code.

It still does - not just on AVR - also on ARM and others.

It was quite amusing when I implemented the "internal" memcpy() - in C -
only to find that the compiler outsmarted me and implemented it as a
call to itself (which obviously crashed the stack).


So I've "borrowed" a few bits from avr-libc and avr-gcc to allow my
project to build independently of them.


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