RE: [PATCH] Makefile: don't include git version file on 'make clean'

From: lynn.lin@emc.com <lynn.lin@emc.com>
Date: Jul 25, 2010, 12:19 UTC
Message-ID: <7F48A44C0E1FBF48B00D4DA49C85432E54F99D@CORPUSMX100A.corp.emc.com>
In-Reply-To: <AANLkTilK_8wVQG6s8pUrscwd7ZnvgGyjOjJP41uXYfEl@mail.gmail.com>

-----Original Message-----
From: Ævar Arnfjörð Bjarmason [mailto:avarab@gmail.com] 
Sent: 2010年7月25日 20:16
To: Andreas Schwab
Cc: Lin, Lynn; kpfleming@digium.com; git@vger.kernel.org
Subject: Re: [PATCH] Makefile: don't include git version file on 'make clean'

On Sun, Jul 25, 2010 at 12:05, Andreas Schwab <schwab@linux-m68k.org> wrote:

Show 5 quoted lines

> Ævar Arnfjörð Bjarmason <avarab@gmail.com> writes:
>
>> Makefile targets aren't triggered by the include directive.
>
> Umm, yes they are, see (make) Remaking Makefiles.

Ah, yes. But it was being included in more places than just that -include directive, so I didn't spot the difference:

Without that directive, still generated on make clean:

    $ git diff -U0 | cat
    diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
    index e88f50c..f29406b 100755
    --- a/GIT-VERSION-GEN
    +++ b/GIT-VERSION-GEN
    @@ -2,0 +3,2 @@
    +echo MOO > /tmp/moo
    +
    diff --git a/Makefile b/Makefile
    index b6975aa..5edfeca 100644
    --- a/Makefile
    +++ b/Makefile
    @@ -241 +240,0 @@ GIT-VERSION-FILE: FORCE
    --include GIT-VERSION-FILE
    $ rm -v /tmp/moo; make clean > /dev/null; cat /tmp/moo
    removed `/tmp/moo'
    GIT_VERSION = 1.7.2.6.g65a0d3.dirty
    GITGUI_VERSION = 0.12.0.64.g89d61-dirty
    MOO

Deleted the rule, not generated, but other things are still calling the rule:

Why not delete the rule? We only handle this on 'make clean' command ('make distclean') target

    $ git diff -U0 | cat
    diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
    index e88f50c..f29406b 100755
    --- a/GIT-VERSION-GEN
    +++ b/GIT-VERSION-GEN
    @@ -2,0 +3,2 @@
    +echo MOO > /tmp/moo
    +
    diff --git a/Makefile b/Makefile
    index b6975aa..1a189da 100644
    --- a/Makefile
    +++ b/Makefile
    @@ -239,4 +238,0 @@ all::
    -GIT-VERSION-FILE: FORCE
    -       @$(SHELL_PATH) ./GIT-VERSION-GEN
    --include GIT-VERSION-FILE
    -
    $ rm -v /tmp/moo; make clean > /dev/null; cat /tmp/moo
    removed `/tmp/moo'
    make[2]: *** No rule to make target `GIT-VERSION-FILE'.  Stop.
    make[2]: *** No rule to make target `GIT-VERSION-FILE'.  Stop.
    make[2]: *** No rule to make target `GIT-VERSION-FILE'.  Stop.
    GITGUI_VERSION = 0.12.0.64.g89d61-dirty
    cat: /tmp/moo: No such file or directory