Re: sparc-rtems defines unix and ada/sysdep.c

["Joel Sherrill <joel at OARcorp dot com>" <joel dot sherrill at OARcorp dot com>]

Ralf Corsepius wrote:
> On Wed, 2004-03-10 at 15:14, Joel Sherrill  wrote:
>
> > Ralf Corsepius wrote:
> >
> > > On Wed, 2004-03-10 at 14:16, Joel Sherrill wrote:
> > >
> > >
> > > > Hi,
> > > >
> > > > In trying to get gcc 3.4 to build Ada for *-rtems, I have noticed that 
> > > > sysdep.c seems
> > > > to now be dependent on termios.h for sparc-rtems.  In tracking this 
> > > > down, it seems
> > > > as though unix is a predefine for sparc-rtems.    This causes gnat to 
> > > > think that we
> > > > should have termios installed when the run-time is built. 
> > > >
> > > > So I am left with two issues:
> > > >
> > > > + why is sparc-rtems defining unix?
> > >
> > > Because sparc-rtems-gcc is broken. It bogusly applies config-files from
> > > sparc-solaris.
> >
> > As does sparc-elf which sparc-rtems is closely modeled upon.
>
> Yep, I recall other sparc platforms suffering from the same issue.
>
>
> > > > Can we safely turn it off?  How?
> > >
> > > My attempts to fix this can be found in:
> > > http://www.rtems.com/cgi-bin/gnatsweb.pl?database=RTEMS&cmd=view&pr=517
> >
> > It looks like you just inlined the solaris files and marked sections
> > as unused.  Is that right?
>
> More or less, yes.
>
> What I actually did was to concat several solaris headers and started to
> comment out everything that seemed solaris specific or unnecessary for
> RTEMS. 
>
> Unfortunately, I don't recall all details of hand and would have to look
> into the patch again (this all happened several months ago and the
> feedback on it wasn't necessarily encouraging enough to continue this
> work :( ).

I recall that you were way ahead of the curve in testing this
and no one revisited it.  Likely sparc-elf is lightly used and
no one noticed or cared if they did.

> > Would config/sparc/linux.h be closer to use as a starting point for
> > a new config/sparc/rtemself.h?
>
>
> May-be, I'd have to check the details, but ... currently don't have the
> time for checking it. I'd expect all sparc/ELF ports to share a common
> (non-solaris/non-linux/elf-only specific) file. 

But unfortunately, they don't seem to like the other ports.

I will add it to my list of things to attempt.  I would like
to get this fixed before 3.4.0 is cut.

I suppose I should test powerpc-rtems for gnat though to
see if that is in better shape since defining UNIX is a
sparc specific issue.

> Ralf


--
Joel Sherrill, Ph.D.             Director of Research & Development
joel@OARcorp.com                 On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
   Support Available             (256) 722-9985