Need help with package that only supplies subports ...

[Edward Maros]

I have a project that does not distribute any files by default. Instead,
all distributed are part of various subports. This is because this
package only provides language bindings (python, etc.) for a dependent
package. I am getting the error message:

:error:destroot No files have been installed in the destroot directory!
:error:destroot Please make sure that this software supports 'make install DESTDIR=${destroot}' or implement an alternative destroot mechanism in the Portfile.
:error:destroot Files might have been installed directly into your system, check before proceeding.

Is there a way to set a subport to be built by default?
Is there a way to have an empty package?

Thanks,
Ed

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