How to add an additional option to dg-compile and dg-run

[Jonathan Wakely]

On Mon, 29 Jul 2024 at 09:20, Thomas Koenig via Gcc <gcc@gcc.gnu.org> wrote:
>
> Hi,
>
> for the fortran-unsigned branch, I would like to be able to run all
> existing Fortran tests also with -funsigned, to make sure the option
> does not break anything on existing code.
>
> Question is: How?
>
> I came as far as
>
> $ make check-fortran RUNTESTFLAGS="--target_board=unix/-funsigned"
>
> but that causes testsuite failures because C does not recognize
> the option.
>
> Any other possibilites?

I haven't tested it, but based on testsuite/gfortran.dg/dg.exp it
looks like you could add this in ~/.dejagnurc

set DEFAULT_FFLAGS "-funsigned -pedantic-errors"

(The -pedantic-errors is what dg.exp uses if the variable doesn't
already exist, so this preserves that.)

If you're using a site.exp you could add this there instead of ~/.dejagnurc