Re: GCC and new libgloss platform

[Jeff Johnston <jjohnstn at redhat dot com>]

Jacob Bower wrote:
> Hi,
>
> I'm working with the OpenRISC (or32) platform, and noticed that there is 
> no libgloss for entry or32. I've written and gotten working a basic 
> implementation with a suitable crt0 and i/o stubs which allow minimal 
> access via the standard OpenRISC UART.
>
> However I can't see how to build gcc using my new libgloss entry.
>
> How do I make gcc pick these up in its install and use them when performing
> default linking? Is this possible? or do I have to write my own spec file
> and manually put this in.

Jacob, you need to alter gcc for your configuration to do this.  Post to 
the gcc list for help on this.  Alternatively, you can put a spec file 
or .ld file in libgloss and require the user to specify it when 
compiling (e.g. -Tmy.ld).

> I'm using gcc-3.2.3 and newlib-1.13.0, and I've symlinked the newlib/ and
> libgloss/ directories into the root of the gcc buildtree. I build gcc,
> configured with --with-newlib and --with-libgloss, but after install, I get
> libc along with gcc but my crt0, linker script and supporting library are
> nowhere to be found.
>
> I based my libgloss entry on the i386 one as this seemed one of the
> simplest.

Remember when you symlink into your gcc "source" tree, the newlib and 
libgloss subdirectories should be siblings of the gcc subdirectory (i.e. 
you should have libiberty, gcc, newlib, libgloss, etc... all using the 
same top-level files of gcc (e.g. config.sub).

There is no --with-libgloss flag at the moment.  You will need to ensure 
that either the top-level configuration doesn't nix target-libgloss in 
your case or else look at adding such a configuration flag.

If you still run into problems, more information would be helpful.  For 
example, how you configured and what changes you made to libgloss.

-- Jeff J.