Re: autoconf-2.66: AC_CONFIG_SUBDIRS warns

[Ralf Wildenhues]

* Eric Blake wrote on Wed, Jul 07, 2010 at 07:22:00AM CEST:
> > The Subdirectories node of the manual also documents:
> > 
> >      If a given DIR is not found, an error is reported: if the
> >      subdirectory is optional, write:
> > 
> >           if test -d "$srcdir/foo"; then
> >             AC_CONFIG_SUBDIRS([foo])
> >           fi
> > 
> > which isn't true either: we don't warn or error if a subdirectory is
> > not present.  This is *not* a recent regression, and it's on purpose
> > that I don't want to change this behavior before the next release; I
> > fear that packages rely on the broken behavior but do not intend to
> > test this right now.
> 
> Agreed; this would probably be better as a documentation change
> rather than a code behavior change, but a separate patch for
> that issue is fine.

Proposed patch.  I'm putting coverage for this node of the manual in my
todo list.  OK now or afterwards?

Thanks,
Ralf

    Fix wording about AC_CONFIG_SUBDIRS warning.
    
    * doc/autoconf.texi (Subdirectories): We warn, not error, about
    nonexistent config subdirs, but only at configure run time.

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 0422d9e..68dceb0 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -3635,8 +3635,8 @@ Subdirectories
 fi
 @end example
 
-If a given @var{dir} is not found, an error is reported: if the
-subdirectory is optional, write:
+If a given @var{dir} is not found at @command{configure} run time, a
+warning is reported; if the subdirectory is optional, write:
 
 @example
 if test -d "$srcdir/foo"; then