tools/build/Makefile.feature

1 # SPDX-License-Identifier: GPL-2.0-only
6   $(shell mkdir -p $(OUTPUT_FEATURES))
11 …-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CC="$(CC)" CXX="$(CXX)" CFLAGS="$(EXTRA_CFLAGS)…
16   feature-$(1) := 1
28 #   the rule that uses them - an example for that is the 'bionic'
36         fortify-source                  \
41         libbfd-buildid			\
44         libelf-getphdrnum               \
45         libelf-gelf_getnote             \
46         libelf-getshdrstrndx            \
52         libslang-include-subdir         \
57         pthread-attr-setaffinity-np     \
58         pthread-barrier     		\
60         stackprotector-all              \
62         libdw-dwarf-unwind              \
71         libaio				\
73         disassembler-four-args		\
74         disassembler-init-styled	\
75         file-handle
81          compile-32                     \
82          compile-x32                    \
83          cplus-demangle                 \
84          cxa-demangle                   \
86          gtk2-infobar                   \
89          libbfd-liberty                 \
90          libbfd-liberty-z               \
92          libunwind-x86                  \
93          libunwind-x86_64               \
94          libunwind-arm                  \
95          libunwind-aarch64              \
96          libunwind-debug-frame          \
97          libunwind-debug-frame-arm      \
98          libunwind-debug-frame-aarch64  \
101          llvm-version                   \
104          libbpf-btf__load_from_kernel_by_id \
105          libbpf-bpf_prog_load           \
106          libbpf-bpf_object__next_program \
107          libbpf-bpf_object__next_map    \
108          libbpf-bpf_program__set_insns  \
109          libbpf-bpf_create_map		\
112          clang-bpf-co-re
126          libbfd-buildid		\
135          libdw-dwarf-unwind     \
140          libaio			\
147 FEATURE_GROUP_MEMBERS-libbfd = libbfd-liberty libbfd-liberty-z
149 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
150 # If in the future we need per-feature checks/flags for features not
151 # mentioned in this list we need to refactor this ;-).
154   FEATURE_CHECK_CFLAGS-all  += $(FEATURE_CHECK_CFLAGS-$(1))
155   FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
161 # Special fast-path for the 'all features are available' case:
169 ifeq ($(feature-all), 1)
171   # test-all.c passed - just set all the core feature flags to 1:
175   # test-all.c does not comprise these tests, so we need to
178   $(call feature_check,compile-32)
179   $(call feature_check,compile-x32)
196     GROUP += $(FEATURE_GROUP_MEMBERS-$(1))
201   ifneq (,$(filter 1,$(foreach feat,$(call feature_group,$(feat)),$(feature-$(feat)))))
215 #   $(call feature_assign,dwarf) == feature-dwarf=1
217 feature_assign = feature-$(1)=$(feature-$(1))
219 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
236 # so we force FEATURE-DUMP generation
241 # - detected features differes from stored features from
243 # - one of the $(FEATURE_DISPLAY) is not detected
244 # - VF is enabled
247   $(shell rm -f $(FEATURE_DUMP_FILENAME))
253   ifneq ($(feature-$(1)), 1)
270   FEATURE_OMIT := $(foreach feat,$(FEATURE_DISPLAY),$(FEATURE_GROUP_MEMBERS-$(feat)))
277     $$(info Auto-detecting system features:)
278 …$(foreach feat,$(filter-out $(FEATURE_OMIT),$(FEATURE_DISPLAY)),$(call feature_print_status,$(feat…
282     $(eval TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS)))