Re: Testing a new compiler with Automake "simple tests"

[Roberto Bagnara]

On 08/17/10 13:26, Stefano Lattarini wrote:
> At Tuesday 17 August 2010, Roberto Bagnara wrote:
> > I would like to test a new special-purpose compiler
> > (which is part of a bigger project) using the Automake
> > "simple tests" feature.
> >
> > I have two problems:
> >
> > 1) I have not found a way to force recompilation
> >      of all test programs whenever the compiler executable
> >      has changed.  Note that we are talking about
> >      thousands of test programs so, if at all possible,
> >      I would like to avoid listing that dependency
> >      for each one of those.
> Maybe I don't understand the problem, but... what's wrong
> with:
>    $(TESTS): your-special-purpose-compiler
> or something similar?

Hi Stefano, thanks for your prompt reply.
That dependency cases relinking whenever the compiler
changes, whereas I need recompilation.
Do you know if there is a way I can force Automake
to add a dependency on the compiler in the .c.o rule?
That is, to generate:

.c.o:   my-special-purpose-compiler
        $(AM_V_CC) \
        $(COMPILE) -c $<

> > 2) Automatic dependency tracking cannot work in
> >      that directory of the project (indeed, the only
> >      dependency is on the compiler... all the test
> >      programs are self-contained).  How can I disably
> >      automatic dependency tracking *only* on that
> >      directory?
> What about adding `no-dependencies' to AUTOMAKE_OPTIONS
> in that directory's Makefile.am?  The documentation at
> <http://www.gnu.org/software/automake/manual/automake.html#Options>
> reads:
>    "no-dependencies: This is similar to using --ignore-deps on the
>     command line, but is useful for those situations where you don't
>     have the necessary bits to make automatic dependency tracking work
>     (see Dependencies).  In this case the effect is to effectively
>     disable automatic dependency tracking."

Yes, this works.  Sorry for not having looked at the manual carefully
enough (not that I did not try).
Thanks a lot,

  Roberto

--
Prof. Roberto Bagnara
Applied Formal Methods Laboratory
Department of Mathematics, University of Parma, Italy
http://www.cs.unipr.it/~bagnara/
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