FreeBSD headers change request

[Jeffrey A Law]

  In message < 19980322185131.24683@nuxi.com >you write:
  > --- gcc/config/i386/freebsd.h.orig	Fri Feb 13 10:52:24 1998
  > +++ gcc/config/i386/freebsd.h	Fri Feb 13 11:03:27 1998
  > @@ -35,10 +35,13 @@
  >  #include "i386/perform.h"
  >  
  >  #undef CPP_PREDEFINES
  > -#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__ -D__386BSD__ -Asystem(
  > unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
  > +#define CPP_PREDEFINES "-Di386 -Dunix -D__FreeBSD__ -Asystem(unix) -Asyste
  > m(FreeBSD) -Acpu(i386) -Amachine(i386)"
Is removing the __386BSD__ predefine going to cause problems with
any older versions of FreeBSD?

  >  /* Like the default, except no -lg.  */
  >  #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
  > +
  > +#undef CC1PLUS_SPEC
  > +#define CC1PLUS_SPEC "-fsjlj-exceptions"
I assume the point is to disable dwarf2 unwind based exceptions, if
so the proper way to do that is #define DWARF2_UNWIND_INFO 0.

  > +++ gcc/config/i386/freebsd-elf.h	Sun Mar 22 18:01:59 1998
  > @@ -127,6 +127,9 @@
  >      }								
  > 	\
  >  }
  >  
  > +#undef CC1PLUS_SPEC
  > +#define CC1PLUS_SPEC "-fsjlj-exceptions"
Is this really necessary for ELF?  I would have expected the unwinder
mechanisms to work for just about any x86 ELF target.  Is that not
the case?

jeff