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From:   Junio C Hamano <gitster@pobox.com>
To:     Jeff King <peff@peff.net>
Cc:     git@vger.kernel.org,
        =?utf-8?B?w4Z2YXIgQXJuZmrDtnLDsA==?= Bjarmason <avarab@gmail.com>
Subject: Re: [PATCH] Documentation/Makefile: fix lint-docs mkdir dependency
References: <YXeu4Hl2cmIPqobd@coredump.intra.peff.net>
Date:   Wed, 27 Oct 2021 17:03:12 -0700
In-Reply-To: <YXeu4Hl2cmIPqobd@coredump.intra.peff.net> (Jeff King's message
        of "Tue, 26 Oct 2021 03:31:44 -0400")
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Jeff King <peff@peff.net> writes:

> Since 8650c6298c (doc lint: make "lint-docs" non-.PHONY, 2021-10-15), we
> put the output for gitlink linter into .build/lint-docs/gitlink. There
> are order-only dependencies to create the sequence of subdirs like:
>
>   .build/lint-docs: | .build
>           $(QUIET)mkdir $@
>   .build/lint-docs/gitlink: | .build/lint-docs
>           $(QUIET)mkdir $@
>
> where each level has to depend on the prior one (since the parent
> directory must exist for us to create something inside it). But the
> "howto" and "config" subdirectories of gitlink have the wrong
> dependency; they depend on "lint-docs", not "lint-docs/gitlink".

Thanks.

I wonder if we can somehow avoid this unwieldy chain of commands,
perhaps with using "mkdir -p" somewhere, or make the lint scripts
create the necessary leading paths.  From the looks of the tail end
of Documentation/Makefile, the latter may be the cleaner solution.