linux-kernel - Re: realpath "No such file or directory" warnings when building tags from KBUILD

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Message-ID: <20200809210056.GA1344537@thinkpad>
Date:   Sun, 9 Aug 2020 14:00:56 -0700
From:   Rustam Kovhaev <rkovhaev@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     xujialu <xujialu@...ux.org>, masahiroy@...nel.org,
        Jonathan Corbet <corbet@....net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: realpath "No such file or directory" warnings when building tags
 from KBUILD_OUTPUT directory

On Sun, Aug 09, 2020 at 09:16:27AM +0200, Greg Kroah-Hartman wrote:
> On Sat, Aug 08, 2020 at 01:28:22PM -0700, Rustam Kovhaev wrote:
> > running 'make ARCH=x86_64 COMPILED_SOURCE=1 cscope tags' in
> > KBUILD_OUTPUT directory produces lots of "No such file or directory"
> > warnings from realpath
> > 
> > it seems like commit 4f491bb6ea2a greatly improved tags generation when
> > COMPILED_SOURCE=1 is set, but should we add "-q" flag for realpath in 
> > all_compiled_sources() or probably it would be better to fix root cause
> > and make sure that for example we don't try to find objtool sources and
> > exclude other similar dirs during tags generation? what do you think?
> > 
> > ...
> > realpath: special.h: No such file or directory
> > realpath: warn.h: No such file or directory
> > realpath: sigchain.c: No such file or directory
> > realpath: sigchain.h: No such file or directory
> > realpath: orc_gen.c: No such file or directory
> > realpath: objtool.c: No such file or directory
> > ...
> 
> Care to send a patch for this?
hi Greg, yes i do, thank you!