GNU Emacs vs. newer GNU ld

GNU Emacs vs. newer GNU ld

[Masao Uebayashi]

Synopsis:
	GNU Emacs dumps core unless -nw.

Environment:
	NetBSD 1.6Q or later, with older Pkgsrc tree.
	(But this problem probably happens on any other OSes.)

How to repeat:
	Build GNU Emacs with X support using the newest GNU Binutils.
	Invoke it as "emacs".  It dies.

How to fix:
	Pass the "-nocombreloc" option to ld.

Description:

Hello.

Pkgsrc (http://www.pkgsrc.org/) had a problem that Emacs died when
it's built with the newest GNU ld (2.13.2.1).  We noticed that this is
caused by an ld's new feature that:

	it combines "reloc" sections into a single .rel.dyn section
	(presumably to speed up dynamic loading).  Secondly, rather
	than using a copy reloc in the .bss section for
	widgetClassRec, it uses a reloc in the .data section for this
	reference (ditto).

	(http://www.NetBSD.org/cgi-bin/query-pr-single.pl?number=20660)

Now we have a fix as a local diff, but this can be fixed in the
original.  (XEmacs already has the fix.)

I'll try to post a proper diff later, which is good enough for you to
incorporate, if no one will do.  But I'm not so familar with GNU
Autoconf, and am not sure if I can do soon.  I'll appreciate if you
fix the problem appropriately.

Thank you very much.

Masao