1 # SPDX-License-Identifier: GPL-2.0-only <<
2 feature_dir := $(srctree)/tools/build/feature 1 feature_dir := $(srctree)/tools/build/feature
3 2
4 ifneq ($(OUTPUT),) 3 ifneq ($(OUTPUT),)
5 OUTPUT_FEATURES = $(OUTPUT)feature/ 4 OUTPUT_FEATURES = $(OUTPUT)feature/
6 $(shell mkdir -p $(OUTPUT_FEATURES)) 5 $(shell mkdir -p $(OUTPUT_FEATURES))
7 endif 6 endif
8 7
9 feature_check = $(eval $(feature_check_code)) 8 feature_check = $(eval $(feature_check_code))
10 define feature_check_code 9 define feature_check_code
11 feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUT !! 10 feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" CXXFLAGS="$(EXTRA_CXXFLAGS) $(FEATURE_CHECK_CXXFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
12 endef 11 endef
13 12
14 feature_set = $(eval $(feature_set_code)) 13 feature_set = $(eval $(feature_set_code))
15 define feature_set_code 14 define feature_set_code
16 feature-$(1) := 1 15 feature-$(1) := 1
17 endef 16 endef
18 17
19 # 18 #
20 # Build the feature check binaries in parallel 19 # Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:
21 # 20 #
22 21
23 # 22 #
24 # Note that this is not a complete list of all 23 # Note that this is not a complete list of all feature tests, just
25 # those that are typically built on a fully co 24 # those that are typically built on a fully configured system.
26 # 25 #
27 # [ Feature tests not mentioned here have to b 26 # [ Feature tests not mentioned here have to be built explicitly in
28 # the rule that uses them - an example for t 27 # the rule that uses them - an example for that is the 'bionic'
29 # feature check. ] 28 # feature check. ]
30 # 29 #
31 FEATURE_TESTS_BASIC := \ !! 30 FEATURE_TESTS_BASIC := \
32 backtrace \ !! 31 backtrace \
33 dwarf \ !! 32 dwarf \
34 dwarf_getlocations \ !! 33 dwarf_getlocations \
35 dwarf_getcfi \ !! 34 fortify-source \
36 eventfd \ !! 35 sync-compare-and-swap \
37 fortify-source \ !! 36 glibc \
38 get_current_dir_name \ !! 37 gtk2 \
39 gettid \ !! 38 gtk2-infobar \
40 glibc \ !! 39 libaudit \
41 libbfd \ !! 40 libbfd \
42 libbfd-buildid \ !! 41 libelf \
43 libcap \ !! 42 libelf-getphdrnum \
44 libelf \ !! 43 libelf-gelf_getnote \
45 libelf-getphdrnum \ !! 44 libelf-getshdrstrndx \
46 libelf-gelf_getnote \ !! 45 libelf-mmap \
47 libelf-getshdrstrndx \ !! 46 libnuma \
48 libnuma \ !! 47 numa_num_possible_cpus \
49 numa_num_possible_cpus \ !! 48 libperl \
50 libperl \ !! 49 libpython \
51 libpython \ !! 50 libpython-version \
52 libslang \ !! 51 libslang \
53 libslang-include-subdir \ !! 52 libcrypto \
54 libtraceevent \ !! 53 libunwind \
55 libtracefs \ !! 54 libunwind-x86 \
56 libcrypto \ !! 55 libunwind-x86_64 \
57 libunwind \ !! 56 libunwind-arm \
58 pthread-attr-setaffinity-np \ !! 57 libunwind-aarch64 \
59 pthread-barrier \ !! 58 pthread-attr-setaffinity-np \
60 reallocarray \ !! 59 stackprotector-all \
61 stackprotector-all \ !! 60 timerfd \
62 timerfd \ !! 61 libdw-dwarf-unwind \
63 libdw-dwarf-unwind \ !! 62 zlib \
64 zlib \ !! 63 lzma \
65 lzma \ !! 64 get_cpuid \
66 get_cpuid \ !! 65 bpf \
67 bpf \ !! 66 sdt
68 scandirat \ <<
69 sched_getcpu \ <<
70 sdt \ <<
71 setns \ <<
72 libaio \ <<
73 libzstd \ <<
74 disassembler-four-args \ <<
75 disassembler-init-styled \ <<
76 file-handle <<
77 67
78 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is 68 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
79 # of all feature tests 69 # of all feature tests
80 FEATURE_TESTS_EXTRA := \ !! 70 FEATURE_TESTS_EXTRA := \
81 bionic \ !! 71 bionic \
82 compile-32 \ !! 72 compile-32 \
83 compile-x32 \ !! 73 compile-x32 \
84 cplus-demangle \ !! 74 cplus-demangle \
85 cxa-demangle \ !! 75 hello \
86 gtk2 \ !! 76 libbabeltrace \
87 gtk2-infobar \ !! 77 liberty \
88 hello \ !! 78 liberty-z \
89 libbabeltrace \ !! 79 libunwind-debug-frame \
90 libcapstone \ !! 80 libunwind-debug-frame-arm \
91 libbfd-liberty \ !! 81 libunwind-debug-frame-aarch64
92 libbfd-liberty-z \ <<
93 libopencsd \ <<
94 libunwind-x86 \ <<
95 libunwind-x86_64 \ <<
96 libunwind-arm \ <<
97 libunwind-aarch64 \ <<
98 libunwind-debug-frame \ <<
99 libunwind-debug-frame-arm \ <<
100 libunwind-debug-frame-aarch64 \ <<
101 cxx \ <<
102 llvm \ <<
103 clang \ <<
104 libbpf \ <<
105 libbpf-btf__load_from_kernel_by_id \ <<
106 libbpf-bpf_prog_load \ <<
107 libbpf-bpf_object__next_program \ <<
108 libbpf-bpf_object__next_map \ <<
109 libbpf-bpf_program__set_insns \ <<
110 libbpf-bpf_create_map \ <<
111 libpfm4 \ <<
112 libdebuginfod \ <<
113 clang-bpf-co-re <<
114 <<
115 82
116 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC) 83 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
117 84
118 ifeq ($(FEATURE_TESTS),all) 85 ifeq ($(FEATURE_TESTS),all)
119 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FE 86 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
120 endif 87 endif
121 88
122 FEATURE_DISPLAY ?= \ !! 89 FEATURE_DISPLAY ?= \
123 dwarf \ !! 90 dwarf \
124 dwarf_getlocations \ !! 91 dwarf_getlocations \
125 glibc \ !! 92 glibc \
126 libbfd \ !! 93 gtk2 \
127 libbfd-buildid \ !! 94 libaudit \
128 libcap \ !! 95 libbfd \
129 libelf \ !! 96 libelf \
130 libnuma \ !! 97 libnuma \
131 numa_num_possible_cpus \ !! 98 numa_num_possible_cpus \
132 libperl \ !! 99 libperl \
133 libpython \ !! 100 libpython \
134 libcrypto \ !! 101 libslang \
135 libunwind \ !! 102 libcrypto \
136 libdw-dwarf-unwind \ !! 103 libunwind \
137 libcapstone \ !! 104 libdw-dwarf-unwind \
138 llvm-perf \ !! 105 zlib \
139 zlib \ !! 106 lzma \
140 lzma \ !! 107 get_cpuid \
141 get_cpuid \ !! 108 bpf
142 bpf \ <<
143 libaio \ <<
144 libzstd <<
145 <<
146 # <<
147 # Declare group members of a feature to displa <<
148 # result instead of each member result. <<
149 # <<
150 FEATURE_GROUP_MEMBERS-libbfd = libbfd-liberty <<
151 <<
152 # <<
153 # Declare list of feature dependency packages <<
154 # <<
155 FEATURE_PKG_CONFIG ?= \ <<
156 libtraceevent \ <<
157 libtracefs <<
158 <<
159 feature_pkg_config = $(eval $(feature_pkg_conf <<
160 define feature_pkg_config_code <<
161 FEATURE_CHECK_CFLAGS-$(1) := $(shell $(PKG_C <<
162 FEATURE_CHECK_LDFLAGS-$(1) := $(shell $(PKG_ <<
163 endef <<
164 <<
165 # Set FEATURE_CHECK_(C|LD)FLAGS-$(package) for <<
166 ifneq ($(PKG_CONFIG),) <<
167 $(foreach package,$(FEATURE_PKG_CONFIG),$(ca <<
168 endif <<
169 109
170 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FE 110 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
171 # If in the future we need per-feature checks/ 111 # If in the future we need per-feature checks/flags for features not
172 # mentioned in this list we need to refactor t 112 # mentioned in this list we need to refactor this ;-).
173 set_test_all_flags = $(eval $(set_test_all_fla 113 set_test_all_flags = $(eval $(set_test_all_flags_code))
174 define set_test_all_flags_code 114 define set_test_all_flags_code
175 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK 115 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
176 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK 116 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
177 endef 117 endef
178 118
179 $(foreach feat,$(FEATURE_TESTS),$(call set_tes 119 $(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
180 120
181 # 121 #
182 # Special fast-path for the 'all features are 122 # Special fast-path for the 'all features are available' case:
183 # 123 #
184 $(call feature_check,all,$(MSG)) 124 $(call feature_check,all,$(MSG))
185 125
186 # 126 #
187 # Just in case the build freshly failed, make 127 # Just in case the build freshly failed, make sure we print the
188 # feature matrix: 128 # feature matrix:
189 # 129 #
190 ifeq ($(feature-all), 1) 130 ifeq ($(feature-all), 1)
191 # 131 #
192 # test-all.c passed - just set all the core 132 # test-all.c passed - just set all the core feature flags to 1:
193 # 133 #
194 $(foreach feat,$(FEATURE_TESTS),$(call featu 134 $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
195 # 135 #
196 # test-all.c does not comprise these tests, 136 # test-all.c does not comprise these tests, so we need to
197 # for this case to get features proper value 137 # for this case to get features proper values
198 # 138 #
199 $(call feature_check,compile-32) 139 $(call feature_check,compile-32)
200 $(call feature_check,compile-x32) 140 $(call feature_check,compile-x32)
201 $(call feature_check,bionic) 141 $(call feature_check,bionic)
202 $(call feature_check,libbabeltrace) 142 $(call feature_check,libbabeltrace)
203 else 143 else
204 $(foreach feat,$(FEATURE_TESTS),$(call featu 144 $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
205 endif 145 endif
206 146
207 # 147 #
208 # Print the result of the feature test: 148 # Print the result of the feature test:
209 # 149 #
210 feature_print_status = $(eval $(feature_print_ !! 150 feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
211 <<
212 feature_group = $(eval $(feature_gen_group)) $ <<
213 <<
214 define feature_gen_group <<
215 GROUP := $(1) <<
216 ifneq ($(feature_verbose),1) <<
217 GROUP += $(FEATURE_GROUP_MEMBERS-$(1)) <<
218 endif <<
219 endef <<
220 151
221 define feature_print_status_code 152 define feature_print_status_code
222 ifneq (,$(filter 1,$(foreach feat,$(call fea !! 153 ifeq ($(feature-$(1)), 1)
223 MSG = $(shell printf '...%40s: [ \033[32mo !! 154 MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
224 else 155 else
225 MSG = $(shell printf '...%40s: [ \033[31mO !! 156 MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
226 endif 157 endif
227 endef 158 endef
228 159
229 feature_print_text = $(eval $(feature_print_te !! 160 feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
230 define feature_print_text_code 161 define feature_print_text_code
231 MSG = $(shell printf '...%40s: %s' $(1) $( !! 162 MSG = $(shell printf '...%30s: %s' $(1) $(2))
232 endef 163 endef
233 164
234 # 165 #
235 # generates feature value assignment for name, 166 # generates feature value assignment for name, like:
236 # $(call feature_assign,dwarf) == feature-dw 167 # $(call feature_assign,dwarf) == feature-dwarf=1
237 # 168 #
238 feature_assign = feature-$(1)=$(feature-$(1)) 169 feature_assign = feature-$(1)=$(feature-$(1))
239 170
240 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$ 171 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
241 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_F 172 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
242 173
243 feature_dump_check = $(eval $(feature_dump_che 174 feature_dump_check = $(eval $(feature_dump_check_code))
244 define feature_dump_check_code 175 define feature_dump_check_code
245 ifeq ($(findstring $(1),$(FEATURE_DUMP)),) 176 ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
246 $(2) := 1 177 $(2) := 1
247 endif 178 endif
248 endef 179 endef
249 180
250 # 181 #
251 # First check if any test from FEATURE_DISPLAY 182 # First check if any test from FEATURE_DISPLAY
252 # and set feature_display := 1 if it does 183 # and set feature_display := 1 if it does
253 $(foreach feat,$(FEATURE_DISPLAY),$(call featu 184 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
254 185
255 # 186 #
256 # Now also check if any other test changed, 187 # Now also check if any other test changed,
257 # so we force FEATURE-DUMP generation 188 # so we force FEATURE-DUMP generation
258 $(foreach feat,$(FEATURE_TESTS),$(call feature 189 $(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
259 190
260 # The $(feature_display) controls the default 191 # The $(feature_display) controls the default detection message
261 # output. It's set if: 192 # output. It's set if:
262 # - detected features differes from stored fea 193 # - detected features differes from stored features from
263 # last build (in $(FEATURE_DUMP_FILENAME) fi 194 # last build (in $(FEATURE_DUMP_FILENAME) file)
264 # - one of the $(FEATURE_DISPLAY) is not detec 195 # - one of the $(FEATURE_DISPLAY) is not detected
265 # - VF is enabled 196 # - VF is enabled
266 197
267 ifeq ($(feature_dump_changed),1) 198 ifeq ($(feature_dump_changed),1)
268 $(shell rm -f $(FEATURE_DUMP_FILENAME)) 199 $(shell rm -f $(FEATURE_DUMP_FILENAME))
269 $(foreach feat,$(FEATURE_TESTS),$(shell echo 200 $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
270 endif 201 endif
271 202
272 feature_display_check = $(eval $(feature_check 203 feature_display_check = $(eval $(feature_check_display_code))
273 define feature_check_display_code 204 define feature_check_display_code
274 ifneq ($(feature-$(1)), 1) 205 ifneq ($(feature-$(1)), 1)
275 feature_display := 1 206 feature_display := 1
276 endif 207 endif
277 endef 208 endef
278 209
279 $(foreach feat,$(FEATURE_DISPLAY),$(call featu 210 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
280 211
281 ifeq ($(VF),1) 212 ifeq ($(VF),1)
282 feature_display := 1 213 feature_display := 1
283 feature_verbose := 1 214 feature_verbose := 1
284 endif 215 endif
285 216
286 ifneq ($(feature_verbose),1) !! 217 ifeq ($(feature_display),1)
287 # !! 218 $(info )
288 # Determine the features to omit from the di !! 219 $(info Auto-detecting system features:)
289 # logical OR of the detection result will be !! 220 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
290 # !! 221 ifneq ($(feature_verbose),1)
291 FEATURE_OMIT := $(foreach feat,$(FEATURE_DIS !! 222 $(info )
292 endif <<
293 <<
294 feature_display_entries = $(eval $(feature_dis <<
295 define feature_display_entries_code <<
296 ifeq ($(feature_display),1) <<
297 $$(info ) <<
298 $$(info Auto-detecting system features:) <<
299 $(foreach feat,$(filter-out $(FEATURE_OMIT <<
300 endif <<
301 <<
302 ifeq ($(feature_verbose),1) <<
303 $(eval TMP := $(filter-out $(FEATURE_DISPL <<
304 $(foreach feat,$(TMP),$(call feature_print <<
305 endif 223 endif
306 endef !! 224 endif
307 225
308 ifeq ($(FEATURE_DISPLAY_DEFERRED),) !! 226 ifeq ($(feature_verbose),1)
309 $(call feature_display_entries) !! 227 TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
>> 228 $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
310 $(info ) 229 $(info )
311 endif 230 endif
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