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Date: Tue, 9 May 2017 13:17:14 -0700
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: sparse on scripts/kconfig/*.c
Message-ID: <20170509201714.GA24001@infradead.org>
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To: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-kbuild <linux-kbuild@vger.kernel.org>, Dan Carpenter <dan.carpenter@oracle.com>, LKML <linux-kernel@vger.kernel.org>

On Tue, May 09, 2017 at 09:47:41AM -0700, Randy Dunlap wrote:
> Hi,
> 
> I've been attempting to run sparse on the kconfig/ C files -- without success.
> 
> The kbuild files don't try to support CHECK in scripts/kconfig/ AFAICT,
> and just running sparse on the C files has issues with not being able to
> find header files.
> 
> Has anyone done this?  Any clues about how to do it?

As a wild guess from using sparse on various userspace projects:

have you tried simply setting HOSTCC to cgcc?