linux-kernel - Re: "mconf" and help texts

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Message-Id: <200801070431.25688.zippel@linux-m68k.org>
Date:	Mon, 7 Jan 2008 04:31:24 +0100
From:	Roman Zippel <zippel@...ux-m68k.org>
To:	"Ph. Marek" <philipp.marek@...v.gv.at>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: "mconf" and help texts

Hi,

On Thursday 3. January 2008, Ph. Marek wrote:

> So I took a look at "Help", and saw that blob:
>
>   Selected by: NETFILTER_XT_TARGET_CONNMARK && NET && INET && NETFILTER &&
>      NETFILTER_XTABLES && (IP_NF_MANGLE || IP6_NF_MANGLE) && NF_CONNTRACK
> || NETFILTER_XT_MATCH_CONNMARK && NET && INET && NETFILTER &&
>      NETFILTER_XTABLES && NF_CONNTRACK || IP_NF_TARGET_CLUSTERIP && NET &&
>      INET && NETFILTER && IP_NF_MANGLE && EXPERIMENTAL && NF_CONNTRACK_IPV4
>
> That is a _bit_ unreadable.

What you see here is the internal representation of the select expression. To 
make it more easily readable, you could just cut off everything between && 
and || (it's the dependency of the symbol which does the select, the one 
before &&).
The readable expression could be generated when needed, but it might be easier 
to just generate at the same time as the full expression (in menu_finalize).

> As a side-node - I cannot get xconfig to work (pkg-config);

Why exactly? What's the error message?

> is there some 
> way in menuconfig to see why some config option is disallowed? The location
> tree shows some data ("-> Networking support (NET [=y])"), but not for all
> dependencies.

I don't quite understand. The dependency for option itself is above the 
location tree and the for dependencies of the dependencies you have to look 
at their individual info.

> [Does xconfig allow enabling them while seeing this option?] 

Only if you enable the missing dependency. This is insofar a little easier as 
they are linked if you enable the deubg info, so the prompt may be a little 
easier to find.

bye, Roman
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