GNU ld shared library support for IRIX 5/6

[Rainer Orth <ro at TechFak dot Uni-Bielefeld dot DE>]

While trying to reenable GCC 3 support for IRIX 5.3

	http://gcc.gnu.org/ml/gcc/2003-07/msg02249.html

I tried to use gcc 3.4 with GNU ld.  It is currently disabled in the
toplevel configure.in with this comment:

  mips*-*-irix5*)
    # The GNU linker does not support shared libraries.
    noconfigdirs="$noconfigdirs ld gprof target-libgloss ${libgcj}"
    ;;

I manually enabled and built it, and after providing the corresponding
iris5gld.h file in gcc, was able to use it.  Unfortunately, the comment is
true: ld isn't able to use IRIX 5's libc.so.1, but insists on libc.a (which
isn't installed at all on the system in question).  I can hardly believe
this: is there really no support for shared libraries with 32-bit MIPS (O32
ABI), and if so, what would it take to add this?  Btw., what about the N32
and N64 ABIs in this respect?

	Rainer

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Rainer Orth, Faculty of Technology, Bielefeld University