Re: Support LDFLAGS_SL on most ports

Peter Eisentraut wrote:

> Two comments: First, support for specifying it on configure requires you
> to call AC_ARG_VAR ("require" as in it would prevent people from
> shooting themselves in the foot). Please read up on it and add the
> appropriate call.

Ok, so that makes sure that the var is hooked into the
cache/autoreconfig/etc machinery. Fixed.

> Second, the AC_MSG_NOTICE calls are there for some
> variables because configure may modify them. But LDFLAGS_SL is just
> taken as given, so there is no need to print a notice about it.

Personally I find it annoying when configure eats arguments without any
feedback at all -- did it actually use the parameter, or did I make a
typo? I've removed the AC_MSG_NOTICE anyway.

Updated patch attached.

-O