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From: Jeff King <peff@peff.net>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: "SZEDER Gábor" <szeder.dev@gmail.com>,
	git@vger.kernel.org, "Emily Shaffer" <emilyshaffer@google.com>,
	"Junio C Hamano" <gitster@pobox.com>
Subject: Re: [PATCH] Makefile: add missing dependencies of 'config-list.h'
Date: Thu, 8 Apr 2021 19:40:41 -0400	[thread overview]
Message-ID: <YG+UeQRwdBsVeRNV@coredump.intra.peff.net> (raw)
In-Reply-To: <87pmz4ig4o.fsf@evledraar.gmail.com>

On Fri, Apr 09, 2021 at 12:08:23AM +0200, Ævar Arnfjörð Bjarmason wrote:

> > -config-list.h:
> > +config-list.h: Documentation/*config.txt Documentation/config/*.txt
> >  	$(QUIET_GEN)$(SHELL_PATH) ./generate-configlist.sh \
> >  		>$@+ && mv $@+ $@
> >  
> >  command-list.h: generate-cmdlist.sh command-list.txt
> >  
> > -command-list.h: $(wildcard Documentation/git*.txt) Documentation/*config.txt Documentation/config/*.txt
> > +command-list.h: $(wildcard Documentation/git*.txt)
> >  	$(QUIET_GEN)$(SHELL_PATH) ./generate-cmdlist.sh \
> >  		$(patsubst %,--exclude-program %,$(EXCLUDED_PROGRAMS)) \
> >  		command-list.txt >$@+ && mv $@+ $@
> 
> This change makes sense.

I agree it looks like it's moving in the right direction, but I am
slightly puzzled by the existing code. Why do we need to use $(wildcard)
for git*.txt, but not for the others?

> I have a not-yet-submitted patch series where I added some more
> config/*/*.txt that wouldn't be caught by this rule, I'd updated the
> Documentation/Makefile, but missed this part in the top-level Makefile.
> 
> So a relation question: Does anyone actually prefer this state of
> affairs of having a Makefile, Documentation/Makefile, t/Makefile
> t/perf/Makefile and template/Makefile?
> 
> It seems to me with ever-closer coupling between them that it's getting
> to be more of a hassle to manage state between them than it would be to
> just move them all into one big Makefile.

Yes, I'm generally a fan of avoiding recursive make when we can. I think
the caveats are:

  - it would be nice to continue to have stub Makefiles in
    sub-directories that trigger the main one (so "cd t && make"
    continues to work, for example).

  - we may need some cleanup of parts of the top-level Makefile which
    are triggered without dependencies (e.g., I think we unconditionally
    run some scripts to compute GIT_VERSION in the top-level; this is
    already a bit wasteful, but may get even more so as we add more
    rules from sub-directories).

Mostly my argument against it (and why I haven't purused it) would be:
it sounds like a lot of work and risk of regression, and the current
system seems pretty fine in practice.

-Peff

  reply	other threads:[~2021-04-08 23:40 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-16 21:18 [PATCH v13 0/5] git-bugreport with fixed VS build Emily Shaffer
2020-04-16 21:18 ` [PATCH v13 1/5] help: move list_config_help to builtin/help Emily Shaffer
2020-04-16 22:21   ` Junio C Hamano
2020-04-16 22:28     ` Junio C Hamano
2020-04-17 19:36       ` Emily Shaffer
2020-04-17  2:04   ` Danh Doan
2020-04-17  2:11     ` Danh Doan
2021-04-08 21:29   ` [PATCH] Makefile: add missing dependencies of 'config-list.h' SZEDER Gábor
2021-04-08 22:08     ` Ævar Arnfjörð Bjarmason
2021-04-08 23:40       ` Jeff King [this message]
2021-04-09 21:20         ` SZEDER Gábor
2021-04-16 19:03           ` Junio C Hamano
2021-04-16 21:33             ` SZEDER Gábor
2021-04-16 22:25               ` Junio C Hamano
2021-04-13 19:07         ` Ævar Arnfjörð Bjarmason
2020-04-16 21:18 ` [PATCH v13 2/5] bugreport: add tool to generate debugging info Emily Shaffer
2020-08-12 15:53   ` SZEDER Gábor
2021-04-08 21:36     ` SZEDER Gábor
2020-04-16 21:18 ` [PATCH v13 3/5] bugreport: gather git version and build info Emily Shaffer
2020-04-16 21:18 ` [PATCH v13 4/5] bugreport: add uname info Emily Shaffer
2021-04-08 22:19   ` Ævar Arnfjörð Bjarmason
2021-04-08 22:25     ` Junio C Hamano
2021-04-08 22:33       ` Ævar Arnfjörð Bjarmason
2021-04-08 23:41         ` Emily Shaffer
2021-04-08 23:58           ` Junio C Hamano
2021-04-09 21:27           ` SZEDER Gábor
2021-04-11 14:33             ` [PATCH] t0091-bugreport.sh: actually verify some content of report Martin Ågren
2021-04-12 17:17               ` Junio C Hamano
2021-04-13 18:32                 ` Martin Ågren
2021-04-13 19:27                   ` Ævar Arnfjörð Bjarmason
2021-04-13 22:21                     ` Emily Shaffer
2023-07-01 19:26                       ` [PATCH v2] " Martin Ågren
2023-07-03 15:47                         ` Phillip Wood
2023-07-05 18:31                           ` Martin Ågren
2023-07-05 18:40                             ` [PATCH v3] " Martin Ågren
2023-07-05 19:46                               ` Phillip Wood
2021-04-13 19:44               ` [PATCH] " SZEDER Gábor
2020-04-16 21:18 ` [PATCH v13 5/5] bugreport: add compiler info Emily Shaffer
2021-04-08 22:23   ` Ævar Arnfjörð Bjarmason
2021-04-08 22:59     ` Đoàn Trần Công Danh

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