Re: [PATCH v3 02/17] tools build: Fix feature Makefile dependencies for 'O='

Jiri Olsa
2015-12-14T10:08:57Z

On Sun, Dec 13, 2015 at 10:18:02PM -0600, Josh Poimboeuf wrote:
> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
> ---
> tools/build/Makefile.feature | 2 +-
> tools/build/feature/Makefile | 95 ++++++++++++++++++++++----------------------
> 2 files changed, 49 insertions(+), 48 deletions(-)
>
> diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
> index b8c31ec..6c0519d 100644
> --- a/tools/build/Makefile.feature
> +++ b/tools/build/Makefile.feature
> @@ -7,7 +7,7 @@ endif
>
> feature_check = $(eval $(feature_check_code))
> define feature_check_code
> - feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
> + feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
> endef
>
> feature_set = $(eval $(feature_set_code))
> diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
> index cea04ce9..8fec49d 100644
> --- a/tools/build/feature/Makefile
> +++ b/tools/build/feature/Makefile
> @@ -1,4 +1,3 @@
> -
> FILES= \
> test-all.bin \
> test-backtrace.bin \
> @@ -38,38 +37,40 @@ FILES= \
> test-bpf.bin \
> test-get_cpuid.bin
>
> +OUTPUT_FILES = $(addprefix $(OUTPUT),$(FILES))

seems there's no need to introduce new variable, you could use FILES:

FILES := $(addprefix $(OUTPUT),$(FILES))

jirka