linux-kernel - Re: [PATCH v2] selftests: kcmp build fails when invoked from kselftest target

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Date:	Wed, 11 Mar 2015 13:19:37 +1100
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Shuah Khan <shuahkh@....samsung.com>
Cc:	gorcunov@...nvz.org, akpm@...ux-foundation.org,
	tranmanphong@...il.com, linux-kernel@...r.kernel.org,
	linux-api@...r.kernel.org
Subject: Re: [PATCH v2] selftests: kcmp build fails when invoked from
 kselftest target

On Tue, 2015-03-10 at 18:08 -0600, Shuah Khan wrote:
> kcmp Makefile doesn't have an explicit build rule. As a result,
> kcmp build fails, when it is run from top level Makefile target
> kselftest. Without the explicit rule, make works only when it is
> run in the current directory or from selftests directory. Add an
> explicit build rule to fix the problem. 

This should be fixed properly using my patch to filter -rR or similar.

> In addition, build fails
> as it can't find kcmp.h. Fix it by passing CFLAGS.

That is also wrong. It should *not* be looking in include/uapi.

If it needs headers then it should be using the *exported* headers, which are
in ../../../../usr/include as the existing CFLAGS specifiy.

Those headers are installed as part of 'make headers_install'.

cheers


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