[PATCH 2/8] selftests: lib.mk: define CLEAN macro to allow Makefiles to override clean

[David Laight]

From: Shuah Khan
> Sent: 22 April 2017 00:15
> Define CLEAN macro to allow Makefiles to override common clean target
> in lib.mk. This will help fix the following failures:
> 
> warning: overriding recipe for target 'clean'
> ../lib.mk:55: warning: ignoring old recipe for target 'clean'
> 
> Signed-off-by: Shuah Khan <shuahkh at osg.samsung.com>
> ---
>  tools/testing/selftests/lib.mk | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
> index 775c589..959273c 100644
> --- a/tools/testing/selftests/lib.mk
> +++ b/tools/testing/selftests/lib.mk
> @@ -51,8 +51,12 @@ endef
>  emit_tests:
>  	$(EMIT_TESTS)
> 
> -clean:
> +define CLEAN
>  	$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
> +endef
> +
> +clean:
> +	$(CLEAN)

If might be easier to do something like:

ifneq($(NO_CLEAN),y)
clean:
	$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
endif

	David