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