Exceptions workaround for older systems that don't USE_COLLECT2

[Jeffrey A Law]

  In message < 199809152302.QAA17855@aldrington.ppp.cs.sfu.ca >you write:
  > A week or so ago, Jeff wrote:
  > > I've enabled collect2 for the m68k nextstep port [... and] for the
  > > x86.  gcc doesn't support NeXT on the PA or SPARC.
  > 
  > I built egcs 1.1 last night with the above change made (i.e. configure's
  > nextstep `use_collect2' line changed from `no' to `yes'), and the results
  > were disappointing. While egcs builds okay, C++ is nonfunctional.
  > 
  > The final link stage of any C++ program fails with:
  > 
  > /bin/ld: Undefined symbols:
  > ___main
  > collect2: ld returned 1 exit status
  > 
  > It's also possible that there's more to enabling collect2 to just adding
  > the `use_collect2=yes' line in ./configure, although (from looking at
  > the mainline sources) that does look to be all that Jeff did. I'm guessing
  > we need some crt stuff of some kind here. Opinions would be welcome.
__main should be in libgcc.a.  What  symbols appear in libgcc.a::_main.o?



jeff