[avr-gcc-list] Re: [Bug target/31786] error: unable to find a register to spill in class 'BASE_POINTER_REGS'

[Joel Sherrill]

Eric Weddington wrote:
> > Well, newlib implements a lot of what RTEMS uses, e.g. printf, string
> > ops and other functions. I.e. "OS in newlib" has not been 
> > 100% correct,
> > but "RTEMS and newlib are pretty much woven" would have 
> > matched better 
> >     
>
>   
Yes.  We rely on it for numerous headers including pthread.h. 
> > True, it's a while since I looked into it ... the version I 
> > have around
> > (1.0.4) contains GPL'ed code ;)
> >     
>
> I would strongly suggest that you and Joel take a look at avr-libc again: it
> has printf, many string functions, etc.
>   
Does it support file IO?

At the bottom of the implementation of the stdio library what gets 
called?  write() or
an output character function? 

RTEMS+newlib supports about 85-90% of the functionality defined in POSIX 
1003.1b
with the real-time extensions and we are tracking the OpenGroup Single 
UNIX Specification.
I suspect a lot of code will have to be disabled to even build with a 
small libc.  I have attached
the .h files installed by our newlib RPM.

I'm not saying it is impossible.  Only that RTEMS has a lot of POSIX 
functionality and that
we try to leverage newlib as much as possible for that support.  The 
behavior of RTEMS is
the same on every port and switching C libraries for a single target 
decreases the cross
platform value RTEMS offers.

--joel
> Eric
>
>   

package rtems-4.8-avr-rtems4.8-newlib-1.15.0-12.fc5 is not installed