Re: [PATCH] Ensure getopts.m4sh is compatible with Autoconf-2.61 and newer.

[Ralf Wildenhues]

Hi Gary,

* Gary V. Vaughan wrote on Mon, Jun 21, 2010 at 02:56:12PM CEST:
> This fixes the FreeBSD bootstrap problem.  Okay to push?

Okay if it passes the testsuite.  However, this makes me more cautious
about your other patch for using this machinery for the libtool script
itself: that is created in packages using Libtool, and for those, we
only require Autoconf 2.58 for now.  I'm guessing this getopt
implementation is not yet up to that task?

If it can be made 2.59-compatible (and the other issues noted in that
thread are fixed) then ok, otherwise I would suggest bumping required
Autoconf for libtool.m4 to 2.62 before the Libtool 2.2.14 release and
using the getopt machinery for ltmain then, so that with 2.2.12, users
still have a 2.62-buildable Libtool with cautious requirement on their
own packages.  Does that make sense?

> * libltdl/config/getopt.m4sh (m4_chomp): Ensure this macro is
> implemented even if Autoconf's m4sugar.m4 doesn't provide it.
> (m4go_expand): New macro based on Autoconf-2.64 m4_expand. Use
> it everywhere incase m4sugar.m4 doesn't have an implementation.
> (m4_ifnblank): Replace all uses with m4_ifval, which was
> available long before m4_ifnblank was introduced.

Thanks!
Ralf