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 \ <<
110 libbpf-bpf_create_map \ 106 libbpf-bpf_create_map \
111 libpfm4 \ 107 libpfm4 \
112 libdebuginfod \ 108 libdebuginfod \
113 clang-bpf-co-re 109 clang-bpf-co-re
114 110
115 111
116 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC) 112 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
117 113
118 ifeq ($(FEATURE_TESTS),all) 114 ifeq ($(FEATURE_TESTS),all)
119 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FE 115 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
120 endif 116 endif
121 117
122 FEATURE_DISPLAY ?= \ 118 FEATURE_DISPLAY ?= \
123 dwarf \ 119 dwarf \
124 dwarf_getlocations \ 120 dwarf_getlocations \
125 glibc \ 121 glibc \
126 libbfd \ 122 libbfd \
127 libbfd-buildid \ 123 libbfd-buildid \
128 libcap \ 124 libcap \
129 libelf \ 125 libelf \
130 libnuma \ 126 libnuma \
131 numa_num_possible_cpus \ 127 numa_num_possible_cpus \
132 libperl \ 128 libperl \
133 libpython \ 129 libpython \
134 libcrypto \ 130 libcrypto \
135 libunwind \ 131 libunwind \
136 libdw-dwarf-unwind \ 132 libdw-dwarf-unwind \
137 libcapstone \ <<
138 llvm-perf \ <<
139 zlib \ 133 zlib \
140 lzma \ 134 lzma \
141 get_cpuid \ 135 get_cpuid \
142 bpf \ 136 bpf \
143 libaio \ 137 libaio \
144 libzstd 138 libzstd
145 139
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 <<
170 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FE 140 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
171 # If in the future we need per-feature checks/ 141 # If in the future we need per-feature checks/flags for features not
172 # mentioned in this list we need to refactor t 142 # mentioned in this list we need to refactor this ;-).
173 set_test_all_flags = $(eval $(set_test_all_fla 143 set_test_all_flags = $(eval $(set_test_all_flags_code))
174 define set_test_all_flags_code 144 define set_test_all_flags_code
175 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK 145 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
176 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK 146 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
177 endef 147 endef
178 148
179 $(foreach feat,$(FEATURE_TESTS),$(call set_tes 149 $(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
180 150
181 # 151 #
182 # Special fast-path for the 'all features are 152 # Special fast-path for the 'all features are available' case:
183 # 153 #
184 $(call feature_check,all,$(MSG)) 154 $(call feature_check,all,$(MSG))
185 155
186 # 156 #
187 # Just in case the build freshly failed, make 157 # Just in case the build freshly failed, make sure we print the
188 # feature matrix: 158 # feature matrix:
189 # 159 #
190 ifeq ($(feature-all), 1) 160 ifeq ($(feature-all), 1)
191 # 161 #
192 # test-all.c passed - just set all the core 162 # test-all.c passed - just set all the core feature flags to 1:
193 # 163 #
194 $(foreach feat,$(FEATURE_TESTS),$(call featu 164 $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
195 # 165 #
196 # test-all.c does not comprise these tests, 166 # test-all.c does not comprise these tests, so we need to
197 # for this case to get features proper value 167 # for this case to get features proper values
198 # 168 #
199 $(call feature_check,compile-32) 169 $(call feature_check,compile-32)
200 $(call feature_check,compile-x32) 170 $(call feature_check,compile-x32)
201 $(call feature_check,bionic) 171 $(call feature_check,bionic)
202 $(call feature_check,libbabeltrace) 172 $(call feature_check,libbabeltrace)
203 else 173 else
204 $(foreach feat,$(FEATURE_TESTS),$(call featu 174 $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
205 endif 175 endif
206 176
207 # 177 #
208 # Print the result of the feature test: 178 # Print the result of the feature test:
209 # 179 #
210 feature_print_status = $(eval $(feature_print_ !! 180 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 <<
220 181
221 define feature_print_status_code 182 define feature_print_status_code
222 ifneq (,$(filter 1,$(foreach feat,$(call fea !! 183 ifeq ($(feature-$(1)), 1)
223 MSG = $(shell printf '...%40s: [ \033[32mo !! 184 MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
224 else 185 else
225 MSG = $(shell printf '...%40s: [ \033[31mO !! 186 MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
226 endif 187 endif
227 endef 188 endef
228 189
229 feature_print_text = $(eval $(feature_print_te !! 190 feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
230 define feature_print_text_code 191 define feature_print_text_code
231 MSG = $(shell printf '...%40s: %s' $(1) $( !! 192 MSG = $(shell printf '...%30s: %s' $(1) $(2))
232 endef 193 endef
233 194
234 # 195 #
235 # generates feature value assignment for name, 196 # generates feature value assignment for name, like:
236 # $(call feature_assign,dwarf) == feature-dw 197 # $(call feature_assign,dwarf) == feature-dwarf=1
237 # 198 #
238 feature_assign = feature-$(1)=$(feature-$(1)) 199 feature_assign = feature-$(1)=$(feature-$(1))
239 200
240 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$ 201 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
241 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_F 202 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
242 203
243 feature_dump_check = $(eval $(feature_dump_che 204 feature_dump_check = $(eval $(feature_dump_check_code))
244 define feature_dump_check_code 205 define feature_dump_check_code
245 ifeq ($(findstring $(1),$(FEATURE_DUMP)),) 206 ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
246 $(2) := 1 207 $(2) := 1
247 endif 208 endif
248 endef 209 endef
249 210
250 # 211 #
251 # First check if any test from FEATURE_DISPLAY 212 # First check if any test from FEATURE_DISPLAY
252 # and set feature_display := 1 if it does 213 # and set feature_display := 1 if it does
253 $(foreach feat,$(FEATURE_DISPLAY),$(call featu 214 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
254 215
255 # 216 #
256 # Now also check if any other test changed, 217 # Now also check if any other test changed,
257 # so we force FEATURE-DUMP generation 218 # so we force FEATURE-DUMP generation
258 $(foreach feat,$(FEATURE_TESTS),$(call feature 219 $(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
259 220
260 # The $(feature_display) controls the default 221 # The $(feature_display) controls the default detection message
261 # output. It's set if: 222 # output. It's set if:
262 # - detected features differes from stored fea 223 # - detected features differes from stored features from
263 # last build (in $(FEATURE_DUMP_FILENAME) fi 224 # last build (in $(FEATURE_DUMP_FILENAME) file)
264 # - one of the $(FEATURE_DISPLAY) is not detec 225 # - one of the $(FEATURE_DISPLAY) is not detected
265 # - VF is enabled 226 # - VF is enabled
266 227
267 ifeq ($(feature_dump_changed),1) 228 ifeq ($(feature_dump_changed),1)
268 $(shell rm -f $(FEATURE_DUMP_FILENAME)) 229 $(shell rm -f $(FEATURE_DUMP_FILENAME))
269 $(foreach feat,$(FEATURE_TESTS),$(shell echo 230 $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
270 endif 231 endif
271 232
272 feature_display_check = $(eval $(feature_check 233 feature_display_check = $(eval $(feature_check_display_code))
273 define feature_check_display_code 234 define feature_check_display_code
274 ifneq ($(feature-$(1)), 1) 235 ifneq ($(feature-$(1)), 1)
275 feature_display := 1 236 feature_display := 1
276 endif 237 endif
277 endef 238 endef
278 239
279 $(foreach feat,$(FEATURE_DISPLAY),$(call featu 240 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
280 241
281 ifeq ($(VF),1) 242 ifeq ($(VF),1)
282 feature_display := 1 243 feature_display := 1
283 feature_verbose := 1 244 feature_verbose := 1
284 endif 245 endif
285 246
286 ifneq ($(feature_verbose),1) <<
287 # <<
288 # Determine the features to omit from the di <<
289 # logical OR of the detection result will be <<
290 # <<
291 FEATURE_OMIT := $(foreach feat,$(FEATURE_DIS <<
292 endif <<
293 <<
294 feature_display_entries = $(eval $(feature_dis 247 feature_display_entries = $(eval $(feature_display_entries_code))
295 define feature_display_entries_code 248 define feature_display_entries_code
296 ifeq ($(feature_display),1) 249 ifeq ($(feature_display),1)
297 $$(info ) !! 250 $(info )
298 $$(info Auto-detecting system features:) !! 251 $(info Auto-detecting system features:)
299 $(foreach feat,$(filter-out $(FEATURE_OMIT !! 252 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
>> 253 ifneq ($(feature_verbose),1)
>> 254 $(info )
>> 255 endif
300 endif 256 endif
301 257
302 ifeq ($(feature_verbose),1) 258 ifeq ($(feature_verbose),1)
303 $(eval TMP := $(filter-out $(FEATURE_DISPL !! 259 TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
304 $(foreach feat,$(TMP),$(call feature_print !! 260 $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
>> 261 $(info )
305 endif 262 endif
306 endef 263 endef
307 264
308 ifeq ($(FEATURE_DISPLAY_DEFERRED),) 265 ifeq ($(FEATURE_DISPLAY_DEFERRED),)
309 $(call feature_display_entries) 266 $(call feature_display_entries)
310 $(info ) <<
311 endif 267 endif
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