[PATCH] Link against standalone error library if available

[parona]

Hi,

On Wednesday, January 29th, 2025 at 2:40 PM, Mark Wielaard <mark@klomp.org> wrote:
> I definitely like this patch. But when doing an autoreconf -f -v -i
> (autoconf 2.27) I get:
> 
> autoheader: warning: missing template: HAVE_ERROR_H
> autoheader: warning: Use AC_DEFINE([HAVE_ERROR_H], [], [Description])
> autoreconf: error: /usr/bin/autoheader failed with exit status: 1
> 
> So I had to redefine it as:
> 
> AC_CHECK_HEADER([error.h], [AC_CHECK_FUNC([error], AC_DEFINE([HAVE_ERROR_H], [1], [Define if error.h is usable]))])
> 
> Which results in:
> 
> checking for error.h... yes
> checking for error... yes
> checking for err.h... yes
> 
> And the following definition in config.h
> 
> /* Define if error.h is usable */
> #define HAVE_ERROR_H 1
> 
> If this also works for you I'll check it in as attached.

This works for me and I'd be fine with this in state. Thank you for fixing it up.