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