Re: ignore -ldl on cygwin

[Ralf Wildenhues]

Hi Eric,

* Eric Blake wrote on Sat, Jul 22, 2006 at 05:57:36AM CEST:
> Eric Blake <ebb9 <at> byu.net> writes:
> 
> > 2006-07-18  Eric Blake  <ebb9 <at> byu.net>
> > 
> >     * libltdl/m4/ltdl.m4 (LT_LIB_DLLOAD): Search for dlopen without
> >     depending on -ldl, required by cygwin 1.5.20.
> 
> Committing this using the 72-hour rule with no comments, since it makes a
> difference on cygwin for m4 CVS head.  Let me know if I need to make any
> followup improvements.

This patch looks fine.  A backport to branch-1-5 would be nice.

After a cleanup of the set of stub libraries we know about (moving the
mess in ltmain.sh and some bits of libtool.m4 that ignores -lm and -lc
on some systems ATM to a new macro in libtool.m4, creating a regex or
pattern of libs to ignore), we could add -ldl there.  But this isn't
high priority.

Cheers,
Ralf