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tools build feature: Use value assignment form for FEATURE-DUMP file

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Changing the contents of the FEATURE-DUMP file, so it looks like:

  feature-backtrace=1
  feature-dwarf=0
  feature-fortify-source=1
  feature-sync-compare-and-swap=0

This way it could get included in sub projects, so they won't be forced
to redo features detection.

Also now storing the complete set of features.

Signed-off-by: Jiri Olsa <[email protected]>
Tested-by: Wang Nan <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Zefan Li <[email protected]>
Cc: pi3orama <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Jiri Olsa 2015-12-23 18:58:33 +01:00 • committed by Arnaldo Carvalho de Melo
commit 936d120d5f
1 changed files with 21 additions and 5 deletions
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26
tools/build/Makefile.feature
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@ -129,8 +129,24 @@ endef
feature_assign = feature-$(1)=$(feature-$(1))
FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
FEATURE_DUMP := $(foreach feat,$(FEATURE_DISPLAY),$(call feature_assign,$(feat)))
FEATURE_DUMP_FILE := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
feature_dump_check = $(eval $(feature_dump_check_code))
define feature_dump_check_code
ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
$(2) := 1
endif
endef
#
# First check if any test from FEATURE_DISPLAY
# and set feature_display := 1 if it does
$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
#
# Now also check if any other test changed,
# so we force FEATURE-DUMP generation
$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
# The $(feature_display) controls the default detection message
# output. It's set if:
@ -139,9 +155,9 @@ FEATURE_DUMP_FILE := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_
# - one of the $(FEATURE_DISPLAY) is not detected
# - VF is enabled
ifneq ("$(FEATURE_DUMP)","$(FEATURE_DUMP_FILE)")
$(shell echo "$(FEATURE_DUMP)" > $(FEATURE_DUMP_FILENAME))
feature_display := 1
ifeq ($(feature_dump_changed),1)
$(shell rm -f $(FEATURE_DUMP_FILENAME))
$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
endif
feature_display_check = $(eval $(feature_check_display_code))