linux-kernel - Re: [PATCH 1/2] selftests: cgroup: build error multiple outpt files

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Message-ID: <20211109150122.fbqcrnbtgtas5jid@wittgenstein>
Date:   Tue, 9 Nov 2021 16:01:22 +0100
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     Anders Roxell <anders.roxell@...aro.org>
Cc:     shuah@...nel.org, christian@...uner.io, nathan@...nel.org,
        ndesaulniers@...gle.com, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 1/2] selftests: cgroup: build error multiple outpt files

On Fri, Nov 05, 2021 at 05:25:29PM +0100, Anders Roxell wrote:
> When building selftests/cgroup: with clang the following error are seen:
> 
> clang -Wall -pthread    test_memcontrol.c cgroup_util.c ../clone3/clone3_selftests.h  -o /home/anders/.cache/tuxmake/builds/current/kselftest/cgroup/test_memcontrol
> clang: error: cannot specify -o when generating multiple output files
> make[3]: *** [../lib.mk:146: /home/anders/.cache/tuxmake/builds/current/kselftest/cgroup/test_memcontrol] Error 1
> 
> Rework to add the header files to LOCAL_HDRS before including ../lib.mk,
> since the dependency is evaluated in '$(OUTPUT)/%:%.c $(LOCAL_HDRS)' in
> file lib.mk.
> 
> Suggested-by: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
> ---

Thanks!
Acked-by: Christian Brauner <christian.brauner@...ntu.com>