Mk/Uses/gmake.mk: Permit arguments for adding devel/gmake to RUN_DEPENDS

[jrm]

Summary

Some ports (e.g., math/R or editors/emacs) include their own packaging functionality. Some of these ports' internal packages require GNU make to build, so devel/gmake must be added to the port's RUN_DEPENDS.

[adamw]

Not everybody's going to need those though. Can a note about some packages needing gmake be added to pkg-message for the ports in question?

[jrm]

I am now recalling a conversatation about this topic a few months ago. I tend to agree that these nonessential dependencies could be left to the user to manually install, but I also understand why the maintainers of, e.g, www/npm and about a dozen other ports have added a RUN_DEPENDS on devel/gmake. Users will forget and file reports about failing installations of internal packages. I'm ambivalent. If there is a concensus that gmake shouldn't be a run-time dependency in these situations, I will remove the RUN_DEPENDS=gmake:devel/gmake for math/R and follow your advice for a pkg_message.

[swills]

Personally I think telling users "Install these extra packages in order for the software to work right" provides a bad experience. If you install something, you expect it work completely. If it doesn't and you have to install something else in order for that to happen, that's unexpected. So I think whatever deps are needed should be there. The contents of this patch itself seem fine to me.

[mat]

I think the 3 ports that need it are better off adding a RUN_DEPENDS by manually.

[bapt]

I agree with @mat

[jrm]

Sounds good. Upon further reflection, it might not make sense to encourage these optional dependencies.