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

[Josh Poimboeuf <jpoimboe@redhat.com>]

On Mon, Dec 14, 2015 at 11:08:51AM +0100, Jiri Olsa wrote:
> 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))

Sure, will do that.

-- 
Josh