Re: [avr-gcc-list] avr-libc-1.7.0 fails to compile

[Georg-Johann Lay]

Weddington, Eric schrieb:

> > > currently working on a set of changes to avr-libc that should get
> > >  it to build without the -k switch to make. - Please don't use
> > > gcc 4.5.1 for any real-world work. I've heard that there are bug 
> > > reports against AVR GCC 4.5.x that need to get fixed. However, if
> > >  you're using 4.5.1 to do some testing on the AVR port then that 
> > > would be very helpful.
> >
> > Never actually used avr-gcc 4.x on my projects. Just doing some 
> > benchmarks with 4.x then and when and therefore still stuck at
> > 3.4.6.
>
> Understood. AVR GCC 4.4.3 seems stable so far. But, depending on your
> benchmarks you may, or may not, want to stick with 3.4.6, also
> depending on your criteria.

Looking at the numbers I first thought 4.5 code is too poor to be used. 
But skimming its output it might be the first 4.x that has the potential 
to catch up with 3.4.6. There are minor issues that blow code size like 
the X-reg reloads and some unlucky inline heuristics, but these are 
local in some sense and the "quality gap" is not scattered all over the 
code. However, I don't know anything about its stability.

> > Was just being curious and tried to build latest avr tools and to 
> > catch up with current state of avr-gcc. Seems to me as if
> > development of avr-gcc is dead somehow? So the development had not
> > been stopped because avr-gcc is mature, though :o)
>
> I wouldn't say that development of avr-gcc is dead. It is the usual
> culprit: never enough people to test and fix. Hopefully that should
> be fixed soon-ish, but I'm always hesitant to promise anything.

Ya, who has the power and endurance to bring avr-gcc forward if not 
Atmel...?

Would be a pity if avr-gcc was discontinued because the backend is 
defunct because no one (or hardly anyone) cares...

Are there plans for new features? I'm thinking of taking advantage of 
named address spaces or implementing for unexploited optimization 
opportunies.

Georg