Re: Irix support

[Simon <gcj at gornall dot net>]

Rainer Orth wrote:

> Tom Tromey <tromey@redhat.com> writes:
>
>  
>
> > > > > > > "Simon" == Simon  <gcj@gornall.net> writes:
> > > > > > >              
> > Simon> I was wondering what the status of gcj (or gcc) was on Irix 6.5
> > Simon> at the moment ?
> >
> > I don't know, but...
> >    
>
> Some of it works, but there are two problems:
>
> * The long standing gcc structure passing bug on IRIX 6 (n32 and n64 ABIs)
>  breaks some of libffi.
>
> * There's no implementation of the libffi closures interface for MIPS.
>
> See the thread starting at
>
> 	http://gcc.gnu.org/ml/gcc-patches/2003-05/msg01120.html
>
> for details.
>  
Cheers, I'll have a look :-)

> > Simon> I downloaded and attempted to compile gcc-3.3 with java (just
> > Simon> in case the gcc-docs were out of date :-) but it fails to
> > Simon> compile even the C++ compiler, triggering the error ...
> > Simon> #error BUFF_SIZE_UPPER_BOUND must be at least as large as MIN_BUFF_SIZE!
> >
> > This is not a gcj problem.  You'd probably get better results
> > reporting this to the main list or via bugzilla.
> >    
>
> Indeed: I've never seen anything like this, and I bootstrap GCC (both
> mainline and 3.3 branch) on IRIX 6.5 regularly, most of the time with
> libgcj included.
>  
Hmm. I'm not the only one to have had this happen. (see 
http://gcc.gnu.org/ml/gcc-help/2003-05/msg00134.html). I was running 
6.5.5f (I've just changed the OS to 6.5.17m, the most recent one I have 
on CD. I'm investigating the supposed free maintenance updates for 
online-developers from SGI...) I'll see if the OS change makes a difference.

Do you have the branch-name of the one that works for you ? I was using 
the 3.3 release tar file on the website, not a CVS tree.

> > In 3.1, Irix 6.5 was reported as working, but the port was disabled by
> > default due to "tricks required to get it to build".  I don't remember
> > what these were, but they were posted to this list; you should be able
> > to find more information in the archives.  If it worked once, it
> > shouldn't be too hard to make it work again.
> >    
>
> Even simpler: this is documented in
>
> 	http://gcc.gnu.org/install/specific.html#mips-sgi-irix6
>
>  The --enable-libgcj option is disabled by default: IRIX 6 uses a very low
>  default limit (20480) for the command line length. Although libtool
>  contains a workaround for this problem, at least the N64 libgcj is known
>  not to build despite this, running into an internal error of the native
>  ld. A sure fix is to increase this limit (ncargs) to its maximum of 262144
>  bytes. If you have root access, you can use the systune command to do this.
>  
Yup. I'd already found this and applied the systune.

Thanks,

Simon.