linux-kernel - Re: [PATCH v2] kbuild: check uniqueness of module names

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Message-ID: <781705f7-61c8-3af9-1a0a-df2b6d078b77@petrovitsch.priv.at>
Date:   Fri, 17 May 2019 15:35:34 +0200
From:   Bernd Petrovitsch <bernd@...rovitsch.priv.at>
To:     Alexander Kapshuk <alexander.kapshuk@...il.com>
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kbuild@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg KH <gregkh@...uxfoundation.org>,
        Jessica Yu <jeyu@...nel.org>,
        Lucas De Marchi <lucas.de.marchi@...il.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Michael Schmitz <schmitzmic@...il.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Rusty Russell <rusty@...tcorp.com.au>,
        Kees Cook <keescook@...omium.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] kbuild: check uniqueness of module names

On 17/05/2019 11:25, Alexander Kapshuk wrote:
> On Fri, May 17, 2019 at 11:58 AM Bernd Petrovitsch
> <bernd@...rovitsch.priv.at> wrote:
>>
>> On 17/05/2019 10:16, Alexander Kapshuk wrote:
>> [...]
>>> The 'xargs' '-r' flag is a GNU extension.
>>> If POSIX compliance is important here, the use of 'cat', 'xargs' and
>>> 'basename' may be substituted with that of 'sed' to initialise
>>> same_name_modules:
>>> sed 's!.*/!!' modules.order modules.builtin | sort | uniq -d
>>
>> 's!' is TTBOMK also a GNU-extension:
>> sed 's/.*\///' modules.order modules.builtin | sort | uniq -d
> 
> It isn't.
> Here's an excerpt from the POSIX manpage for 'sed',
> http://pubs.opengroup.org/onlinepubs/009695399/utilities/sed.html:
> [2addr]s/BRE/replacement/flags
> ...  Any character other than backslash or <newline> can be used
> instead of a slash to delimit the BRE and the replacement....

Oops, yup, sorry for the noise.
Don't know anymore where I encountered problems with that in the past ....

MfG,
         Bernd--
"I dislike type abstraction if it has no real reason. And saving
on typing is not a good reason - if your typing speed is the main
issue when you're coding, you're doing something seriously wrong."
    - Linus Torvalds

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