From: Adam Dinwoodie <adam@dinwoodie.org>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org, "Junio C Hamano" <gitster@pobox.com>,
"Phillip Wood" <phillip.wood123@gmail.com>,
"Jeff King" <peff@peff.net>, "Dan Jacques" <dnj@google.com>,
"Eric Wong" <e@80x24.org>, "Jonathan Nieder" <jrnieder@gmail.com>,
"Mike Hommey" <mh@glandium.org>,
"Đoàn Trần Công Danh" <congdanhqx@gmail.com>,
"Victoria Dye" <vdye@github.com>,
"Eric Sunshine" <sunshine@sunshineco.com>,
"Taylor Blau" <me@ttaylorr.com>
Subject: Re: [PATCH] Documentation/Makefile: fix "make info" regression in dad9cd7d518
Date: Wed, 6 Apr 2022 09:26:25 +0100 [thread overview]
Message-ID: <20220406082625.7mots3ziqchjpyhw@lucy.dinwoodie.org> (raw)
In-Reply-To: <patch-1.1-e700d372e0c-20220405T195425Z-avarab@gmail.com>
On Tue, Apr 05, 2022 at 09:56:20PM +0200, Ævar Arnfjörð Bjarmason wrote:
> Fix a regression in my dad9cd7d518 (Makefile: move ".SUFFIXES" rule to
> shared.mak, 2022-03-03). As explained in the GNU make documentation
> for the $* variable, available at:
>
> info make --index-search='$*'
>
> This rule relied on ".texi" being in the default list of suffixes, as
> seen at:
>
> make -f/dev/null -p | grep -v -e ^# -e ^$|grep -F .SUFFIXES
>
> The documentation explains what was going on here:
>
> In an explicit rule, there is no stem; so '$*' cannot be determined
> in that way. Instead, if the target name ends with a recognized
> suffix (*note Old-Fashioned Suffix Rules: Suffix Rules.), '$*' is
> set to the target name minus the suffix. For example, if the
> target name is 'foo.c', then '$*' is set to 'foo', since '.c' is a
> suffix. GNU 'make' does this bizarre thing only for compatibility
> with other implementations of 'make'. You should generally avoid
> using '$*' except in implicit rules or static pattern rules.
>
> If the target name in an explicit rule does not end with a
> recognized suffix, '$*' is set to the empty string for that rule.
>
> I.e. this rule added back in 5cefc33bffd (Documentation: add
> gitman.info target, 2007-12-10) was resolving gitman.texi from
> gitman.info. We can instead just use the more obvious $< variable
> referring to the prerequisite.
>
> This was the only use of $* in our Makefiles in an explicit rule, the
> three remaining ones are all implicit rules, and therefore didn't
> depend on the ".SUFFIXES" list.
>
> Reported-by: Adam Dinwoodie <adam@dinwoodie.org>
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
>
> On Tue, Apr 05 2022, Adam Dinwoodie wrote:
>
> > With this commit, I get the same noisy warnings, but I also get the
> > error "could not open .texi: No such file or directory".
>
> Sorry about the regression. This fixes it, and as noted above I'm
> pretty sure this was the only fallout of the change.
>
> (I didn't have building the full extended documentation as part of my
> local build, but I'll be adding it now).
Confirmed this patch fixes things for me. Thanks for the quick fix!
Tested-by: Adam Dinwoodie <adam@dinwoodie.org>
next prev parent reply other threads:[~2022-04-06 11:37 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-24 17:37 [PATCH v2 0/8] Makefile: optimize noop runs, add shared.mak Ævar Arnfjörð Bjarmason
2021-12-24 17:37 ` [PATCH v2 1/8] Makefiles: add "shared.mak", move ".DELETE_ON_ERROR" to it Ævar Arnfjörð Bjarmason
2021-12-24 17:37 ` [PATCH v2 2/8] Makefile: disable GNU make built-in wildcard rules Ævar Arnfjörð Bjarmason
2021-12-24 17:37 ` [PATCH v2 3/8] Makefile: define $(LIB_H) in terms of $(FIND_SOURCE_FILES) Ævar Arnfjörð Bjarmason
2021-12-24 17:37 ` [PATCH v2 4/8] Makefile: move ".SUFFIXES" rule to shared.mak Ævar Arnfjörð Bjarmason
2022-02-22 0:22 ` Taylor Blau
2022-02-22 11:14 ` Ævar Arnfjörð Bjarmason
2021-12-24 17:37 ` [PATCH v2 5/8] Makefile: move $(comma), $(empty) and $(space) " Ævar Arnfjörð Bjarmason
2021-12-24 17:37 ` [PATCH v2 6/8] Makefile: add "$(QUIET)" boilerplate " Ævar Arnfjörð Bjarmason
2021-12-24 17:37 ` [PATCH v2 7/8] Makefile: use $(wspfx) for $(QUIET...) in shared.mak Ævar Arnfjörð Bjarmason
2021-12-24 17:37 ` [PATCH v2 8/8] Makefiles: add and use wildcard "mkdir -p" template Ævar Arnfjörð Bjarmason
2022-02-21 20:17 ` [PATCH v2 0/8] Makefile: optimize noop runs, add shared.mak Ævar Arnfjörð Bjarmason
2022-02-25 9:04 ` [PATCH v3 0/9] " Ævar Arnfjörð Bjarmason
2022-02-25 9:04 ` [PATCH v3 1/9] scalar Makefile: set the default target after the includes Ævar Arnfjörð Bjarmason
2022-02-25 22:43 ` Junio C Hamano
2022-02-25 9:04 ` [PATCH v3 2/9] Makefiles: add "shared.mak", move ".DELETE_ON_ERROR" to it Ævar Arnfjörð Bjarmason
2022-02-25 22:47 ` Junio C Hamano
2022-02-25 23:05 ` Ævar Arnfjörð Bjarmason
2022-02-25 23:42 ` Junio C Hamano
2022-02-28 10:56 ` Phillip Wood
2022-02-28 11:16 ` Ævar Arnfjörð Bjarmason
2022-02-28 15:51 ` Phillip Wood
2022-02-28 16:34 ` Ævar Arnfjörð Bjarmason
2022-02-25 9:04 ` [PATCH v3 3/9] Makefile: disable GNU make built-in wildcard rules Ævar Arnfjörð Bjarmason
2022-02-25 23:17 ` Junio C Hamano
2022-02-25 9:04 ` [PATCH v3 4/9] Makefile: define $(LIB_H) in terms of $(FIND_SOURCE_FILES) Ævar Arnfjörð Bjarmason
2022-02-25 9:04 ` [PATCH v3 5/9] Makefile: move ".SUFFIXES" rule to shared.mak Ævar Arnfjörð Bjarmason
2022-02-25 23:19 ` Junio C Hamano
2022-02-25 9:04 ` [PATCH v3 6/9] Makefile: move $(comma), $(empty) and $(space) " Ævar Arnfjörð Bjarmason
2022-02-25 23:24 ` Junio C Hamano
2022-02-25 9:04 ` [PATCH v3 7/9] Makefile: add "$(QUIET)" boilerplate " Ævar Arnfjörð Bjarmason
2022-02-25 23:27 ` Junio C Hamano
2022-02-25 9:04 ` [PATCH v3 8/9] Makefile: use $(wspfx) for $(QUIET...) in shared.mak Ævar Arnfjörð Bjarmason
2022-02-25 23:30 ` Junio C Hamano
2022-02-25 9:04 ` [PATCH v3 9/9] Makefiles: add and use wildcard "mkdir -p" template Ævar Arnfjörð Bjarmason
2022-03-02 12:49 ` [PATCH v4 0/9] Makefile: optimize noop runs, add shared.mak Ævar Arnfjörð Bjarmason
2022-03-02 12:49 ` [PATCH v4 1/9] scalar Makefile: use "The default target of..." pattern Ævar Arnfjörð Bjarmason
2022-03-02 19:35 ` Junio C Hamano
2022-03-02 12:49 ` [PATCH v4 2/9] Makefiles: add "shared.mak", move ".DELETE_ON_ERROR" to it Ævar Arnfjörð Bjarmason
2022-03-02 12:49 ` [PATCH v4 3/9] Makefile: disable GNU make built-in wildcard rules Ævar Arnfjörð Bjarmason
2022-03-02 12:49 ` [PATCH v4 4/9] Makefile: define $(LIB_H) in terms of $(FIND_SOURCE_FILES) Ævar Arnfjörð Bjarmason
2022-03-02 12:49 ` [PATCH v4 5/9] Makefile: move ".SUFFIXES" rule to shared.mak Ævar Arnfjörð Bjarmason
2022-03-02 12:49 ` [PATCH v4 6/9] Makefile: move $(comma), $(empty) and $(space) " Ævar Arnfjörð Bjarmason
2022-03-02 12:49 ` [PATCH v4 7/9] Makefile: add "$(QUIET)" boilerplate " Ævar Arnfjörð Bjarmason
2022-03-02 12:49 ` [PATCH v4 8/9] Makefile: use $(wspfx) for $(QUIET...) in shared.mak Ævar Arnfjörð Bjarmason
2022-03-02 19:26 ` Junio C Hamano
2022-03-02 12:49 ` [PATCH v4 9/9] Makefiles: add and use wildcard "mkdir -p" template Ævar Arnfjörð Bjarmason
2022-03-02 20:38 ` Junio C Hamano
2022-03-02 20:39 ` [PATCH v4 0/9] Makefile: optimize noop runs, add shared.mak Junio C Hamano
2022-03-03 14:08 ` Phillip Wood
2022-03-03 16:04 ` [PATCH v5 0/8] " Ævar Arnfjörð Bjarmason
2022-03-03 16:04 ` [PATCH v5 1/8] scalar Makefile: use "The default target of..." pattern Ævar Arnfjörð Bjarmason
2022-03-03 16:04 ` [PATCH v5 2/8] Makefiles: add "shared.mak", move ".DELETE_ON_ERROR" to it Ævar Arnfjörð Bjarmason
2022-03-03 16:04 ` [PATCH v5 3/8] Makefile: disable GNU make built-in wildcard rules Ævar Arnfjörð Bjarmason
2022-04-11 10:05 ` Rene Kita
2022-04-11 10:11 ` Ævar Arnfjörð Bjarmason
2022-03-03 16:04 ` [PATCH v5 4/8] Makefile: define $(LIB_H) in terms of $(FIND_SOURCE_FILES) Ævar Arnfjörð Bjarmason
2022-03-03 16:04 ` [PATCH v5 5/8] Makefile: move ".SUFFIXES" rule to shared.mak Ævar Arnfjörð Bjarmason
2022-04-05 14:15 ` Adam Dinwoodie
2022-04-05 16:04 ` Ævar Arnfjörð Bjarmason
2022-04-05 19:56 ` [PATCH] Documentation/Makefile: fix "make info" regression in dad9cd7d518 Ævar Arnfjörð Bjarmason
2022-04-06 8:26 ` Adam Dinwoodie [this message]
2022-04-06 16:43 ` Junio C Hamano
2022-04-06 17:05 ` Taylor Blau
2022-03-03 16:04 ` [PATCH v5 6/8] Makefile: move $(comma), $(empty) and $(space) to shared.mak Ævar Arnfjörð Bjarmason
2022-03-03 16:04 ` [PATCH v5 7/8] Makefile: add "$(QUIET)" boilerplate " Ævar Arnfjörð Bjarmason
2022-03-03 16:04 ` [PATCH v5 8/8] Makefiles: add and use wildcard "mkdir -p" template Ævar Arnfjörð Bjarmason
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