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From: Eugeniu Rosca <eugeniu.m.rosca@gmail.com>
To: Michal Marek <mmarek@suse.com>
Cc: linux-kbuild@vger.kernel.org
Subject: Re: [PATCH] scripts/tags.sh: Exit gracefully if *tags tool not found
Date: Sun, 15 May 2016 15:44:13 +0200	[thread overview]
Message-ID: <20160515134413.GA14628@eugeniu-X230> (raw)
In-Reply-To: <571E0F1F.8090204@suse.com>

On Mon, Apr 25, 2016 at 02:35:43PM +0200, Michal Marek wrote:
> On 2016-04-24 18:42, Eugeniu Rosca wrote:
> > If the needed host utility is not found, current behavior is:
> > 
> > $> make cscope
> >   GEN     cscope
> > ./scripts/tags.sh: line 140: cscope: command not found
> > $> make gtags
> >   GEN     gtags
> > ./scripts/tags.sh: line 145: gtags: command not found
> > $> make tags
> >   GEN     tags
> > xargs: ctags: No such file or directory
> > sed: can't read tags: No such file or directory
> > Makefile:1509: recipe for target 'tags' failed
> > make: *** [tags] Error 2
> > $> make TAGS
> >   GEN     TAGS
> > xargs: etags: No such file or directory
> > sed: can't read TAGS: No such file or directory
> > Makefile:1509: recipe for target 'TAGS' failed
> > make: *** [TAGS] Error 2
> > 
> > This patch allows to exit gracefully in such a situation:
> > 
> > $> make cscope
> >   GEN     cscope
> > cscope - not installed?
> > $> make gtags
> >   GEN     gtags
> > gtags - not installed?
> > $> make tags
> >   GEN     tags
> > ctags - not installed?
> > $> make TAGS
> >   GEN     TAGS
> > etags - not installed?
> 
> It should fail if it's unable to create the requested file, though.
> Appending '|| exit' to the docscope/dogtags/xtags calls should suffice.
> 
> Michal

Hi Michal,

Late feedback from my end...
I would kindly ask you to select one of the options provided below:

OPTION 1: Append '|| exit' to the docscope/dogtags/xtags calls.
RESULT: This produces more error messages than with the original script:

$> make cscope
  GEN     cscope
./scripts/tags.sh: line 140: cscope: command not found
Makefile:1517: recipe for target 'cscope' failed
make: *** [cscope] Error 127
$> make gtags
  GEN     gtags
./scripts/tags.sh: line 145: gtags: command not found
Makefile:1517: recipe for target 'gtags' failed
make: *** [gtags] Error 127
$> make tags
  GEN     tags
xargs: ctags: No such file or directory
Makefile:1517: recipe for target 'tags' failed
make: *** [tags] Error 127
$> make TAGS
  GEN     TAGS
xargs: etags: No such file or directory
Makefile:1517: recipe for target 'TAGS' failed
make: *** [TAGS] Error 127
$> 

OPTION 2: Append '|| exit 0' to the docscope/dogtags/xtags calls.
RESULT: Cleaner output, but still without suggesting the root-cause:

$> make cscope
GEN     cscope
./scripts/tags.sh: line 140: cscope: command not found
$> make gtags
GEN     gtags
./scripts/tags.sh: line 145: gtags: command not found
$> make tags
GEN     tags
xargs: ctags: No such file or directory
$> make TAGS
GEN     TAGS
xargs: etags: No such file or directory
$>

OPTION 3: Initial patch.
RESULT: Cleaner output, but maybe putting too much infrastructure for
checking against missing utilities?

$> make cscope
GEN     cscope
cscope - not installed?
$> make gtags
GEN     gtags
gtags - not installed?
$> make tags
GEN     tags
ctags - not installed?
$> make TAGS
GEN     TAGS
etags - not installed?

OPTION 4: Something else?
RESULT: ?

Best regards,
Eugeniu.

  reply	other threads:[~2016-05-15 13:44 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-24 16:42 [PATCH] scripts/tags.sh: Exit gracefully if *tags tool not found Eugeniu Rosca
2016-04-25 12:35 ` Michal Marek
2016-05-15 13:44   ` Eugeniu Rosca [this message]
2016-05-16  7:06     ` Michal Marek
2016-05-16 13:37       ` [PATCH v2] scripts/tags.sh: Handle missing {c,e,g}tags/cscope utilities Eugeniu Rosca

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