linux-kernel - Re: Kconfig circular dependency question

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Message-ID: <1396815038.4886.11.camel@x220>
Date:	Sun, 06 Apr 2014 22:10:38 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Kconfig circular dependency question

On Sun, 2014-04-06 at 14:49 -0500, Larry Finger wrote:
> A kernel build is reporting the following:
> 
> net/rfkill/Kconfig:4:error: recursive dependency detected!
> net/rfkill/Kconfig:4:   symbol RFKILL is selected by R8723AU
> drivers/staging/rtl8723au/Kconfig:1:    symbol R8723AU depends on USB
> drivers/usb/Kconfig:41: symbol USB is selected by MOUSE_APPLETOUCH
> drivers/input/mouse/Kconfig:162:        symbol MOUSE_APPLETOUCH depends on INPUT
> drivers/input/Kconfig:8:        symbol INPUT is selected by ACPI_CMPC
> drivers/platform/x86/Kconfig:635:       symbol ACPI_CMPC depends on RFKILL

I must be having a slow day, but how should this be parsed to see the
recursive dependency?

> What is the recommended way to avoid this circularity? Of course, R8723AU could 
> select USB rather than depending on it, but that does not seem quite right.

Thanks,


Paul Bolle

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