[libvirt] [PATCH] build: fix incremental autogen.sh when no AUTHORS is present

[Cole Robinson]

On 12/03/2012 03:14 PM, Eric Blake wrote:
> Commit 71d1256 tried to fix a problem where rebasing an old
> branch on top of newer libvirt.git resulted in automake failing
> because of a missing AUTHORS file.  However, while the fix
> worked for an incremental 'make', it did not work for someone
> that directly reran './autogen.sh'.  Reported by Laine Stump.
> 
> * autogen.sh (autoreconf): Check for same conditions as cfg.mk.
> * cfg.mk (_update_required): Add comments.
> ---
>  autogen.sh |    3 ++-
>  cfg.mk     |    2 ++
>  2 files changed, 4 insertions(+), 1 deletions(-)
> 

I'm not sure how if it impacts this particular change, but why don't we switch
to AM_INIT_AUTOMAKE([foreign]) ? Since AUTHORS or ChangeLog are no longer
static, it seems we are just causing ourselves pain by trying to work around
auto* insisting those files exist.

Then again I don't know what benefits non-foreign gives us...

- Cole