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Date: Tue, 8 Oct 2013 23:42:08 +0200
From: Anatolij Gustschin <agust@denx.de>
To: Gerhard Sittig <gsi@denx.de>
Subject: Re: [PATCH v1] powerpc/mpc512x: silence build warning upon disabled
 DIU
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On Fri, 27 Sep 2013 17:28:38 +0200
Gerhard Sittig <gsi@denx.de> wrote:

> a disabled Kconfig option results in a reference to a not implemented
> routine when the IS_ENABLED() macro is used for both conditional
> implementation of the routine as well as a C language source code test
> at the call site -- the "if (0) func();" construct only gets eliminated
> later by the optimizer, while the compiler already has emitted its
> warning about "func()" being undeclared

applied, thanks!