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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | feature_dir := $(srctree)/tools/build/feature ifneq ($(OUTPUT),) OUTPUT_FEATURES = $(OUTPUT)feature/ $(shell mkdir -p $(OUTPUT_FEATURES)) 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) endef feature_set = $(eval $(feature_set_code)) define feature_set_code feature-$(1) := 1 endef # # Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output: # # # Note that this is not a complete list of all feature tests, just # those that are typically built on a fully configured system. # # [ Feature tests not mentioned here have to be built explicitly in # the rule that uses them - an example for that is the 'bionic' # feature check. ] # FEATURE_TESTS ?= \ backtrace \ dwarf \ fortify-source \ sync-compare-and-swap \ glibc \ gtk2 \ gtk2-infobar \ libaudit \ libbfd \ libelf \ libelf-getphdrnum \ libelf-mmap \ libnuma \ numa_num_possible_cpus \ libperl \ libpython \ libpython-version \ libslang \ libunwind \ pthread-attr-setaffinity-np \ stackprotector-all \ timerfd \ libdw-dwarf-unwind \ zlib \ lzma \ get_cpuid \ bpf FEATURE_DISPLAY ?= \ dwarf \ glibc \ gtk2 \ libaudit \ libbfd \ libelf \ libnuma \ numa_num_possible_cpus \ libperl \ libpython \ libslang \ libunwind \ libdw-dwarf-unwind \ zlib \ lzma \ get_cpuid \ bpf # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features. # If in the future we need per-feature checks/flags for features not # mentioned in this list we need to refactor this ;-). set_test_all_flags = $(eval $(set_test_all_flags_code)) define set_test_all_flags_code FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1)) FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1)) endef $(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat))) # # Special fast-path for the 'all features are available' case: # $(call feature_check,all,$(MSG)) # # Just in case the build freshly failed, make sure we print the # feature matrix: # ifeq ($(feature-all), 1) # # test-all.c passed - just set all the core feature flags to 1: # $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat))) else $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS)" LDFLAGS=$(LDFLAGS) -i -j -C $(feature_dir) $(addsuffix .bin,$(FEATURE_TESTS)) >/dev/null 2>&1) $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat))) endif # # Print the result of the feature test: # feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG)) define feature_print_status_code ifeq ($(feature-$(1)), 1) MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1)) else MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1)) endif endef feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG)) define feature_print_text_code MSG = $(shell printf '...%30s: %s' $(1) $(2)) endef FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER) FEATURE_DUMP := $(foreach feat,$(FEATURE_DISPLAY),feature-$(feat)($(feature-$(feat)))) FEATURE_DUMP_FILE := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME)) ifeq ($(dwarf-post-unwind),1) FEATURE_DUMP += dwarf-post-unwind($(dwarf-post-unwind-text)) endif # The $(feature_display) controls the default detection message # output. It's set if: # - detected features differes from stored features from # last build (in $(FEATURE_DUMP_FILENAME) file) # - 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 endif feature_display_check = $(eval $(feature_check_display_code)) define feature_display_check_code ifneq ($(feature-$(1)), 1) feature_display := 1 endif endef $(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat))) ifeq ($(VF),1) feature_display := 1 feature_verbose := 1 endif ifeq ($(feature_display),1) $(info ) $(info Auto-detecting system features:) $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),)) ifeq ($(dwarf-post-unwind),1) $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text)) endif ifneq ($(feature_verbose),1) $(info ) endif endif ifeq ($(feature_verbose),1) TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS)) $(foreach feat,$(TMP),$(call feature_print_status,$(feat),)) $(info ) endif |