[PATCH synaptics] Fail if no backends can be found

[Peter Hutterer]

On Tue, May 01, 2012 at 04:35:45PM -0700, Alan Coopersmith wrote:
> On 05/ 1/12 04:17 PM, Peter Hutterer wrote:
> > Apparently the driver broke on Solaris when the backends were made optional
> > in cf451f34e3bdd52a4eb072ce9f4b514eb83a1cfc. The driver would still build,
> > but without backends there it has limited usefulness.
> > 
> > Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
> > ---
> >  configure.ac |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/configure.ac b/configure.ac
> > index dbf3fec..5c2c25d 100644
> > --- a/configure.ac
> > +++ b/configure.ac
> > @@ -120,7 +120,7 @@ case "${host}" in
> >  	BUILD_PS2COMM="yes"
> >  	;;
> >  *)
> > -	AC_MSG_RESULT([none])
> > +	AC_MSG_ERROR("Cannot find suitable backends for this platform.")
> >  	;;
> >  esac
> >  if test "x$BUILD_EVENTCOMM" = xyes; then
> 
> When applied to synaptics before Niveditha's recent patch to fix Solaris,
> this does indeed catch the failure that broke Solaris:
> 
> checking which optional backends will be build... configure: error: "Cannot find
> suitable backends for this platform."
> 
> Changing the "" to [] in the AC_MSG_ERROR seems to work as well and gets rid
> of the extra quotes in the output:

amended, thanks.

Cheers,
  Peter

> 
> checking which optional backends will be build... configure: error: Cannot find
> suitable backends for this platform.
> 
> Since Linux, FreeBSD, NetBSD & Dragonfly were all already accounted for, and
> Solaris is queued up, that seems to leave OpenBSD and Hurd that should be
> alerted by this that something isn't quite right for them.
> 
> Reviewed-by: Alan Coopersmith <alan.coopersmith at oracle.com>
> 
> -- 
> 	-Alan Coopersmith-              alan.coopersmith at oracle.com
> 	 Oracle Solaris Engineering - http://blogs.oracle.com/alanc