automake warnings

[Alex Aycinena]

OK - thanks for info.

Alex

On Thu, Feb 5, 2015 at 3:48 PM, John Ralls <jralls at ceridwen.us> wrote:

>
> > On Feb 5, 2015, at 2:21 PM, Alex Aycinena <alex.aycinena at gmail.com>
> wrote:
> >
> > When I run './autogen.sh' on my Fedora 21 machine, I get the following:
> >
> > Makefile.am:10: warning: source file 'util/guile.c' is in a subdirectory,
> > Makefile.am:10: but option 'subdir-objects' is disabled
> > automake: warning: possible forward-incompatibility.
> > automake: At least a source file is in a subdirectory, but the
> > 'subdir-objects'
> > automake: automake option hasn't been enabled.  For now, the
> corresponding
> > output
> > automake: object file(s) will be placed in the top-level directory.
> > However,
> > automake: this behaviour will change in future Automake versions: they
> will
> > automake: unconditionally cause object files to be placed in the same
> > subdirectory
> > automake: of the corresponding sources.
> > automake: You are advised to start using 'subdir-objects' option
> throughout
> > your
> > automake: project, to avoid future incompatibilities.
> >
> > followed by many messages like the following:
> >
> > src/app-utils/Makefile.am:40: warning: source file
> > 'calculation/expression_parser.c' is in a subdirectory,
> > src/app-utils/Makefile.am:40: but option 'subdir-objects' is disabled
> >
> > This is between the lines:
> >
> > Running automake --add-missing --gnu --warnings=no-portability  ...
> >
> > and
> >
> > Running autoconf ...
> >
> > configure, make and make install all seem to work fine.On my Fedora 20
> > machine I don't see these warnings.
> >
> > I don't know if this is because of something different in my environment
> > between the two or because of the versions of the tools in the two
> machines.
> >
> > Can someone give me feedback? I believe, Greet, you use Fedora also. Do
> you
> > see this as well?
> >
>
> Alex,
>
> There’s actually an explanation in configure.ac:
> # Initialize automake -- make sure we have at least version 1.9 Note:
> # Automake 1.14 issues a ton of warnings about subdir-objects, which
> # will become the default in automake 2.0; unfortunately this option
> # is broken and prevents building without passing
> # --disable-dependency-tracking to configure, which make-distcheck
> # doesn't do. See
> # http://lists.gnu.org/archive/html/automake/2014-04/msg00002.html and
> # http://debbugs.gnu.org/cgi/bugreport.cgi?bug=13928 for details.
> # In the meantime the best option is to use Automake 1.13 or earlier.
>
> Regards,
> John Ralls
>
>
>
>