Cross compile GMP for Apple Silicon

[Pierre Chatelier]

>> 
>> Do you mean that -fno-stack-check will hurt performance instead of improving them ?
>> Which optimizations are you talking about ?
> 
> Things like -O2 for instance.

Ooh, you are right, I didn't notice that overriding CFLAGS at the configure stage was disabling default -O2 options.
I quickly tried to fix that with CFLAGS+= instead of CFLAGS=, but it does not work.

I will repost a summary when I eventually get it right

Pierre Chatelier