linux-kernel - Re: [PATCH v2 04/21] kconfig: reference environments directly and remove 'option env=' syntax

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Message-ID: <CAFkk2KSn9goBN5nngwXbePDEohgqzL19V_1m62sgCfej=W5iyw@mail.gmail.com>
Date:   Sun, 1 Apr 2018 04:40:25 +0200
From:   Ulf Magnusson <ulfalizer@...il.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Kees Cook <keescook@...omium.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        "Luis R . Rodriguez" <mcgrof@...nel.org>,
        Nicolas Pitre <nico@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH v2 04/21] kconfig: reference environments directly and
 remove 'option env=' syntax

On Sun, Apr 1, 2018 at 4:27 AM, Ulf Magnusson <ulfalizer@...il.com> wrote:
>
> AFAICS, we only need the following functionality:
>
>     1. Record referenced environment variables along with their value
>
>     2. Go through all the recorded environment variables and write
> dependency information
>
> For (1), I think it would be better to simply have env_list_add() (or
> some other suitable name) add the variable to the list if it isn't
> already there (like a kind of set). It is always safe to get the value
> of the environment variable from getenv(), and that seems less
> confusing.
>

env_list_lookup() could be removed then as well.

Cheers,
Ulf