tools/build/Makefile.feature

2 feature_dir := $(srctree)/tools/build/feature
5   OUTPUT_FEATURES = $(OUTPUT)feature/
11 …feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CC="$(CC)" CXX="$(CXX)" CFLAGS="$(EXTRA_…
16   feature-$(1) := 1
20 # Build the feature check binaries in parallel, ignore errors, ignore return value and suppress out…
24 # Note that this is not a complete list of all feature tests, just
27 # [ Feature tests not mentioned here have to be built explicitly in
29 #   feature check. ]
79 # of all feature tests
147 # Declare group members of a feature to display the logical OR of the detection
153 # Declare list of feature dependency packages that provide pkg-config files.
171 # If in the future we need per-feature checks/flags for features not
188 # feature matrix:
190 ifeq ($(feature-all), 1)
192   # test-all.c passed - just set all the core feature flags to 1:
208 # Print the result of the feature test:
222   ifneq (,$(filter 1,$(foreach feat,$(call feature_group,$(feat)),$(feature-$(feat)))))
235 # generates feature value assignment for name, like:
236 #   $(call feature_assign,dwarf) == feature-dwarf=1
238 feature_assign = feature-$(1)=$(feature-$(1))
240 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
257 # so we force FEATURE-DUMP generation
274   ifneq ($(feature-$(1)), 1)