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 \ <<
56 libcrypto \ 54 libcrypto \
57 libunwind \ 55 libunwind \
58 pthread-attr-setaffinity-np \ 56 pthread-attr-setaffinity-np \
59 pthread-barrier \ 57 pthread-barrier \
60 reallocarray \ 58 reallocarray \
61 stackprotector-all \ 59 stackprotector-all \
62 timerfd \ 60 timerfd \
63 libdw-dwarf-unwind \ 61 libdw-dwarf-unwind \
64 zlib \ 62 zlib \
65 lzma \ 63 lzma \
66 get_cpuid \ 64 get_cpuid \
67 bpf \ 65 bpf \
68 scandirat \ <<
69 sched_getcpu \ 66 sched_getcpu \
70 sdt \ 67 sdt \
71 setns \ 68 setns \
72 libaio \ 69 libaio \
73 libzstd \ 70 libzstd \
74 disassembler-four-args \ 71 disassembler-four-args \
75 disassembler-init-styled \ 72 disassembler-init-styled \
76 file-handle 73 file-handle
77 74
78 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is 75 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
79 # of all feature tests 76 # of all feature tests
80 FEATURE_TESTS_EXTRA := \ 77 FEATURE_TESTS_EXTRA := \
81 bionic \ 78 bionic \
82 compile-32 \ 79 compile-32 \
83 compile-x32 \ 80 compile-x32 \
84 cplus-demangle \ 81 cplus-demangle \
85 cxa-demangle \ <<
86 gtk2 \ 82 gtk2 \
87 gtk2-infobar \ 83 gtk2-infobar \
88 hello \ 84 hello \
89 libbabeltrace \ 85 libbabeltrace \
90 libcapstone \ <<
91 libbfd-liberty \ 86 libbfd-liberty \
92 libbfd-liberty-z \ 87 libbfd-liberty-z \
93 libopencsd \ 88 libopencsd \
94 libunwind-x86 \ 89 libunwind-x86 \
95 libunwind-x86_64 \ 90 libunwind-x86_64 \
96 libunwind-arm \ 91 libunwind-arm \
97 libunwind-aarch64 \ 92 libunwind-aarch64 \
98 libunwind-debug-frame \ 93 libunwind-debug-frame \
99 libunwind-debug-frame-arm \ 94 libunwind-debug-frame-arm \
100 libunwind-debug-frame-aarch64 \ 95 libunwind-debug-frame-aarch64 \
101 cxx \ 96 cxx \
102 llvm \ 97 llvm \
>> 98 llvm-version \
103 clang \ 99 clang \
104 libbpf \ 100 libbpf \
105 libbpf-btf__load_from_kernel_by_id \ 101 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 \ 102 libpfm4 \
112 libdebuginfod \ 103 libdebuginfod \
113 clang-bpf-co-re 104 clang-bpf-co-re
114 105
115 106
116 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC) 107 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
117 108
118 ifeq ($(FEATURE_TESTS),all) 109 ifeq ($(FEATURE_TESTS),all)
119 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FE 110 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
120 endif 111 endif
121 112
122 FEATURE_DISPLAY ?= \ 113 FEATURE_DISPLAY ?= \
123 dwarf \ 114 dwarf \
124 dwarf_getlocations \ 115 dwarf_getlocations \
125 glibc \ 116 glibc \
126 libbfd \ 117 libbfd \
127 libbfd-buildid \ 118 libbfd-buildid \
128 libcap \ 119 libcap \
129 libelf \ 120 libelf \
130 libnuma \ 121 libnuma \
131 numa_num_possible_cpus \ 122 numa_num_possible_cpus \
132 libperl \ 123 libperl \
133 libpython \ 124 libpython \
134 libcrypto \ 125 libcrypto \
135 libunwind \ 126 libunwind \
136 libdw-dwarf-unwind \ 127 libdw-dwarf-unwind \
137 libcapstone \ <<
138 llvm-perf \ <<
139 zlib \ 128 zlib \
140 lzma \ 129 lzma \
141 get_cpuid \ 130 get_cpuid \
142 bpf \ 131 bpf \
143 libaio \ 132 libaio \
144 libzstd !! 133 libzstd \
145 !! 134 disassembler-four-args
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 <<
169 135
170 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FE 136 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
171 # If in the future we need per-feature checks/ 137 # If in the future we need per-feature checks/flags for features not
172 # mentioned in this list we need to refactor t 138 # mentioned in this list we need to refactor this ;-).
173 set_test_all_flags = $(eval $(set_test_all_fla 139 set_test_all_flags = $(eval $(set_test_all_flags_code))
174 define set_test_all_flags_code 140 define set_test_all_flags_code
175 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK 141 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
176 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK 142 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
177 endef 143 endef
178 144
179 $(foreach feat,$(FEATURE_TESTS),$(call set_tes 145 $(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
180 146
181 # 147 #
182 # Special fast-path for the 'all features are 148 # Special fast-path for the 'all features are available' case:
183 # 149 #
184 $(call feature_check,all,$(MSG)) 150 $(call feature_check,all,$(MSG))
185 151
186 # 152 #
187 # Just in case the build freshly failed, make 153 # Just in case the build freshly failed, make sure we print the
188 # feature matrix: 154 # feature matrix:
189 # 155 #
190 ifeq ($(feature-all), 1) 156 ifeq ($(feature-all), 1)
191 # 157 #
192 # test-all.c passed - just set all the core 158 # test-all.c passed - just set all the core feature flags to 1:
193 # 159 #
194 $(foreach feat,$(FEATURE_TESTS),$(call featu 160 $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
195 # 161 #
196 # test-all.c does not comprise these tests, 162 # test-all.c does not comprise these tests, so we need to
197 # for this case to get features proper value 163 # for this case to get features proper values
198 # 164 #
199 $(call feature_check,compile-32) 165 $(call feature_check,compile-32)
200 $(call feature_check,compile-x32) 166 $(call feature_check,compile-x32)
201 $(call feature_check,bionic) 167 $(call feature_check,bionic)
202 $(call feature_check,libbabeltrace) 168 $(call feature_check,libbabeltrace)
203 else 169 else
204 $(foreach feat,$(FEATURE_TESTS),$(call featu 170 $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
205 endif 171 endif
206 172
207 # 173 #
208 # Print the result of the feature test: 174 # Print the result of the feature test:
209 # 175 #
210 feature_print_status = $(eval $(feature_print_ !! 176 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 <<
220 177
221 define feature_print_status_code 178 define feature_print_status_code
222 ifneq (,$(filter 1,$(foreach feat,$(call fea !! 179 ifeq ($(feature-$(1)), 1)
223 MSG = $(shell printf '...%40s: [ \033[32mo !! 180 MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
224 else 181 else
225 MSG = $(shell printf '...%40s: [ \033[31mO !! 182 MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
226 endif 183 endif
227 endef 184 endef
228 185
229 feature_print_text = $(eval $(feature_print_te !! 186 feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
230 define feature_print_text_code 187 define feature_print_text_code
231 MSG = $(shell printf '...%40s: %s' $(1) $( !! 188 MSG = $(shell printf '...%30s: %s' $(1) $(2))
232 endef 189 endef
233 190
234 # 191 #
235 # generates feature value assignment for name, 192 # generates feature value assignment for name, like:
236 # $(call feature_assign,dwarf) == feature-dw 193 # $(call feature_assign,dwarf) == feature-dwarf=1
237 # 194 #
238 feature_assign = feature-$(1)=$(feature-$(1)) 195 feature_assign = feature-$(1)=$(feature-$(1))
239 196
240 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$ 197 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
241 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_F 198 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
242 199
243 feature_dump_check = $(eval $(feature_dump_che 200 feature_dump_check = $(eval $(feature_dump_check_code))
244 define feature_dump_check_code 201 define feature_dump_check_code
245 ifeq ($(findstring $(1),$(FEATURE_DUMP)),) 202 ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
246 $(2) := 1 203 $(2) := 1
247 endif 204 endif
248 endef 205 endef
249 206
250 # 207 #
251 # First check if any test from FEATURE_DISPLAY 208 # First check if any test from FEATURE_DISPLAY
252 # and set feature_display := 1 if it does 209 # and set feature_display := 1 if it does
253 $(foreach feat,$(FEATURE_DISPLAY),$(call featu 210 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
254 211
255 # 212 #
256 # Now also check if any other test changed, 213 # Now also check if any other test changed,
257 # so we force FEATURE-DUMP generation 214 # so we force FEATURE-DUMP generation
258 $(foreach feat,$(FEATURE_TESTS),$(call feature 215 $(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
259 216
260 # The $(feature_display) controls the default 217 # The $(feature_display) controls the default detection message
261 # output. It's set if: 218 # output. It's set if:
262 # - detected features differes from stored fea 219 # - detected features differes from stored features from
263 # last build (in $(FEATURE_DUMP_FILENAME) fi 220 # last build (in $(FEATURE_DUMP_FILENAME) file)
264 # - one of the $(FEATURE_DISPLAY) is not detec 221 # - one of the $(FEATURE_DISPLAY) is not detected
265 # - VF is enabled 222 # - VF is enabled
266 223
267 ifeq ($(feature_dump_changed),1) 224 ifeq ($(feature_dump_changed),1)
268 $(shell rm -f $(FEATURE_DUMP_FILENAME)) 225 $(shell rm -f $(FEATURE_DUMP_FILENAME))
269 $(foreach feat,$(FEATURE_TESTS),$(shell echo 226 $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
270 endif 227 endif
271 228
272 feature_display_check = $(eval $(feature_check 229 feature_display_check = $(eval $(feature_check_display_code))
273 define feature_check_display_code 230 define feature_check_display_code
274 ifneq ($(feature-$(1)), 1) 231 ifneq ($(feature-$(1)), 1)
275 feature_display := 1 232 feature_display := 1
276 endif 233 endif
277 endef 234 endef
278 235
279 $(foreach feat,$(FEATURE_DISPLAY),$(call featu 236 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
280 237
281 ifeq ($(VF),1) 238 ifeq ($(VF),1)
282 feature_display := 1 239 feature_display := 1
283 feature_verbose := 1 240 feature_verbose := 1
284 endif 241 endif
285 242
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 243 feature_display_entries = $(eval $(feature_display_entries_code))
295 define feature_display_entries_code 244 define feature_display_entries_code
296 ifeq ($(feature_display),1) 245 ifeq ($(feature_display),1)
297 $$(info ) !! 246 $(info )
298 $$(info Auto-detecting system features:) !! 247 $(info Auto-detecting system features:)
299 $(foreach feat,$(filter-out $(FEATURE_OMIT !! 248 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
>> 249 ifneq ($(feature_verbose),1)
>> 250 $(info )
>> 251 endif
300 endif 252 endif
301 253
302 ifeq ($(feature_verbose),1) 254 ifeq ($(feature_verbose),1)
303 $(eval TMP := $(filter-out $(FEATURE_DISPL !! 255 TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
304 $(foreach feat,$(TMP),$(call feature_print !! 256 $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
>> 257 $(info )
305 endif 258 endif
306 endef 259 endef
307 260
308 ifeq ($(FEATURE_DISPLAY_DEFERRED),) 261 ifeq ($(FEATURE_DISPLAY_DEFERRED),)
309 $(call feature_display_entries) 262 $(call feature_display_entries)
310 $(info ) <<
311 endif 263 endif
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