linux-kernel - Re: [PATCH] selftests: sync: missing CFLAGS while compiling

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Date:   Fri, 5 Jan 2018 22:51:38 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     Anders Roxell <anders.roxell@...aro.org>
Cc:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        kstewart@...uxfoundation.org, pombredanne@...b.com,
        Shuah Khan <shuah@...nel.org>, lyang0 <Lei.Yang@...driver.com>
Subject: Re: [PATCH] selftests: sync: missing CFLAGS while compiling

On 5 January 2018 at 22:03, Anders Roxell <anders.roxell@...aro.org> wrote:
> Based on patch: https://patchwork.kernel.org/patch/10042045/
>
> arch64-linux-gnu-gcc -c sync.c -o sync/sync.o
> sync.c:42:29: fatal error: linux/sync_file.h: No such file or directory
>  #include <linux/sync_file.h>
>                              ^
> CFLAGS is not used during the compile step, so the system instead of
> kernel headers are used.  Fix this by using lib.mk's compile rules and
> remove CFLAGS from the linking step.
>
> Reported-by: Lei Yang <Lei.Yang@...driver.com>
> Signed-off-by: Anders Roxell <anders.roxell@...aro.org>

Tested-by: Naresh Kamboju <naresh.kamboju@...aro.org>

> ---
>  tools/testing/selftests/sync/Makefile | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
>
> diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
> index b3c8ba3cb668..58b9336d6c84 100644
> --- a/tools/testing/selftests/sync/Makefile
> +++ b/tools/testing/selftests/sync/Makefile
> @@ -27,12 +27,6 @@ OBJS := $(patsubst %,$(OUTPUT)/%,$(OBJS))
>  TESTS := $(patsubst %,$(OUTPUT)/%,$(TESTS))
>
>  $(TEST_CUSTOM_PROGS): $(TESTS) $(OBJS)
> -       $(CC) -o $(TEST_CUSTOM_PROGS) $(OBJS) $(TESTS) $(CFLAGS) $(LDFLAGS)
> -
> -$(OBJS): $(OUTPUT)/%.o: %.c
> -       $(CC) -c $^ -o $@
> -
> -$(TESTS): $(OUTPUT)/%.o: %.c
> -       $(CC) -c $^ -o $@
> +       $(CC) -o $(TEST_CUSTOM_PROGS) $(OBJS) $(TESTS) $(LDFLAGS)
>
>  EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(OBJS) $(TESTS)
> --
> 2.11.0
>