[sr #110331] autoreconf aborts if AC_CONFIG_SUBDIRS() has no arguments

URL:
  <https://savannah.gnu.org/support/?110331>

                 Summary: autoreconf aborts if AC_CONFIG_SUBDIRS() has no
arguments
                 Project: Autoconf
            Submitted by: rossburton
            Submitted on: Tue 13 Oct 2020 06:53:53 PM UTC
                Category: None
                Priority: 5 - Normal
                Severity: 3 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
        Operating System: GNU/Linux

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Details:

For inexplicable reasons, popt 1.18 does this:

AC_CONFIG_SUBDIRS()

With autoconf 2.68 this isn't a problem with autoconf 2.69c breaks:

Use of uninitialized value $args[0] in split at /usr/bin/autoreconf line 452,
<GEN2> line 8.

I patch autoreconf slightly, but that is this line:

    452       push @subdir, split (' ', $args[0])
    453                                     if $macro eq "AC_CONFIG_SUBDIRS"
&& $recursive;





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