Re: [PATCH 3/3] selftests: kcmp build fails when invoked from kselftest target

[Cyrill Gorcunov <gorcunov@gmail.com>]

On Tue, Mar 10, 2015 at 04:00:59PM -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. In addition, build fails
> as it can't find kcmp.h. Fix it by passing CFLAGS.
> 
> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
> ---
>  tools/testing/selftests/kcmp/Makefile | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/kcmp/Makefile b/tools/testing/selftests/kcmp/Makefile
> index ff0eefd..83383eb 100644
> --- a/tools/testing/selftests/kcmp/Makefile
> +++ b/tools/testing/selftests/kcmp/Makefile
> @@ -1,7 +1,8 @@
>  CC := $(CROSS_COMPILE)$(CC)
> -CFLAGS += -I../../../../usr/include/
> +CFLAGS += -I../../../../include/uapi -I../../../../usr/include/
>  
> -all: kcmp_test
> +all:
> +	$(CC) $(CFLAGS) kcmp_test.c -o kcmp_test
>  
>  run_tests: all
>  	@./kcmp_test || echo "kcmp_test: [FAIL]"

Ho Shuah! Thanks for looking into it. I've a small question --
why kcmp_test prerequsite is dropped? As to me it should remain
here, except explicit build rule added.