From: Klemens Nanni <kn@openbsd.org>
Subject: Re: Provide lib/Makefile to enable tags file generation
To: gameoftrees@openbsd.org
Date: Thu,  7 Oct 2021 14:18:01 +0000

On Thu, Oct 07, 2021 at 04:09:41PM +0200, Stefan Sperling wrote:
> On Thu, Oct 07, 2021 at 02:03:11PM +0000, Klemens Nanni wrote:
> > The root Makefile does not hook into lib/ via <bsd.subdir.mk> since it
> > is not a program itself and thus gets included by all others.
> >  
> > This means `make tags` skips lib/ and `make -C lib/ tags` does not know
> > what to do;  provide a minimal <bsd.prog.mk> stub and hook it up just
> > or the "tags" such that *all* source is browsable via tags.
> 
> It looks like bsd.dep.mk could be included instead of bsd.prog.mk?
> It seems that's where the make rule for ctags is implemented.

Nope:

	$ make -C lib tags
	make: don't know how to make _SUBDIRUSE (prerequisite of: tags)
	Stop in /home/kn/got/lib

But I can add a comment or even explicity set `PROG' to the empty string
so it's clear this is a stub.

> I hope we won't forget to update the list of files in this Makefile.
> But I guess the damage of such negligence would be limited ;-)

Well, `SRCS = *.c' always works but I've never seen that in OpenBSD
Makefiles which seem to always explicitly define sources.