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) 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 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 \ <<
36 eventfd \ 34 eventfd \
37 fortify-source \ 35 fortify-source \
>> 36 sync-compare-and-swap \
38 get_current_dir_name \ 37 get_current_dir_name \
39 gettid \ 38 gettid \
40 glibc \ 39 glibc \
>> 40 gtk2 \
>> 41 gtk2-infobar \
>> 42 libaudit \
41 libbfd \ 43 libbfd \
42 libbfd-buildid \ <<
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 libelf-mmap \
48 libnuma \ 49 libnuma \
49 numa_num_possible_cpus \ 50 numa_num_possible_cpus \
50 libperl \ 51 libperl \
51 libpython \ 52 libpython \
>> 53 libpython-version \
52 libslang \ 54 libslang \
53 libslang-include-subdir \ <<
54 libtraceevent \ <<
55 libtracefs \ <<
56 libcrypto \ 55 libcrypto \
57 libunwind \ 56 libunwind \
>> 57 libunwind-x86 \
>> 58 libunwind-x86_64 \
>> 59 libunwind-arm \
>> 60 libunwind-aarch64 \
58 pthread-attr-setaffinity-np \ 61 pthread-attr-setaffinity-np \
59 pthread-barrier \ 62 pthread-barrier \
60 reallocarray \ <<
61 stackprotector-all \ 63 stackprotector-all \
62 timerfd \ 64 timerfd \
63 libdw-dwarf-unwind \ 65 libdw-dwarf-unwind \
64 zlib \ 66 zlib \
65 lzma \ 67 lzma \
66 get_cpuid \ 68 get_cpuid \
67 bpf \ 69 bpf \
68 scandirat \ <<
69 sched_getcpu \ 70 sched_getcpu \
70 sdt \ 71 sdt \
71 setns \ !! 72 setns
72 libaio \ <<
73 libzstd \ <<
74 disassembler-four-args \ <<
75 disassembler-init-styled \ <<
76 file-handle <<
77 73
78 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is 74 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
79 # of all feature tests 75 # of all feature tests
80 FEATURE_TESTS_EXTRA := \ 76 FEATURE_TESTS_EXTRA := \
81 bionic \ 77 bionic \
82 compile-32 \ 78 compile-32 \
83 compile-x32 \ 79 compile-x32 \
84 cplus-demangle \ 80 cplus-demangle \
85 cxa-demangle \ <<
86 gtk2 \ <<
87 gtk2-infobar \ <<
88 hello \ 81 hello \
89 libbabeltrace \ 82 libbabeltrace \
90 libcapstone \ !! 83 liberty \
91 libbfd-liberty \ !! 84 liberty-z \
92 libbfd-liberty-z \ <<
93 libopencsd \ <<
94 libunwind-x86 \ <<
95 libunwind-x86_64 \ <<
96 libunwind-arm \ <<
97 libunwind-aarch64 \ <<
98 libunwind-debug-frame \ 85 libunwind-debug-frame \
99 libunwind-debug-frame-arm \ 86 libunwind-debug-frame-arm \
100 libunwind-debug-frame-aarch64 \ !! 87 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 88
116 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC) 89 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
117 90
118 ifeq ($(FEATURE_TESTS),all) 91 ifeq ($(FEATURE_TESTS),all)
119 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FE 92 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
120 endif 93 endif
121 94
122 FEATURE_DISPLAY ?= \ 95 FEATURE_DISPLAY ?= \
123 dwarf \ 96 dwarf \
124 dwarf_getlocations \ 97 dwarf_getlocations \
125 glibc \ 98 glibc \
>> 99 gtk2 \
>> 100 libaudit \
126 libbfd \ 101 libbfd \
127 libbfd-buildid \ <<
128 libcap \ <<
129 libelf \ 102 libelf \
130 libnuma \ 103 libnuma \
131 numa_num_possible_cpus \ 104 numa_num_possible_cpus \
132 libperl \ 105 libperl \
133 libpython \ 106 libpython \
>> 107 libslang \
134 libcrypto \ 108 libcrypto \
135 libunwind \ 109 libunwind \
136 libdw-dwarf-unwind \ 110 libdw-dwarf-unwind \
137 libcapstone \ <<
138 llvm-perf \ <<
139 zlib \ 111 zlib \
140 lzma \ 112 lzma \
141 get_cpuid \ 113 get_cpuid \
142 bpf \ !! 114 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 <<
169 115
170 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FE 116 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
171 # If in the future we need per-feature checks/ 117 # If in the future we need per-feature checks/flags for features not
172 # mentioned in this list we need to refactor t 118 # mentioned in this list we need to refactor this ;-).
173 set_test_all_flags = $(eval $(set_test_all_fla 119 set_test_all_flags = $(eval $(set_test_all_flags_code))
174 define set_test_all_flags_code 120 define set_test_all_flags_code
175 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK 121 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
176 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK 122 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
177 endef 123 endef
178 124
179 $(foreach feat,$(FEATURE_TESTS),$(call set_tes 125 $(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
180 126
181 # 127 #
182 # Special fast-path for the 'all features are 128 # Special fast-path for the 'all features are available' case:
183 # 129 #
184 $(call feature_check,all,$(MSG)) 130 $(call feature_check,all,$(MSG))
185 131
186 # 132 #
187 # Just in case the build freshly failed, make 133 # Just in case the build freshly failed, make sure we print the
188 # feature matrix: 134 # feature matrix:
189 # 135 #
190 ifeq ($(feature-all), 1) 136 ifeq ($(feature-all), 1)
191 # 137 #
192 # test-all.c passed - just set all the core 138 # test-all.c passed - just set all the core feature flags to 1:
193 # 139 #
194 $(foreach feat,$(FEATURE_TESTS),$(call featu 140 $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
195 # 141 #
196 # test-all.c does not comprise these tests, 142 # test-all.c does not comprise these tests, so we need to
197 # for this case to get features proper value 143 # for this case to get features proper values
198 # 144 #
199 $(call feature_check,compile-32) 145 $(call feature_check,compile-32)
200 $(call feature_check,compile-x32) 146 $(call feature_check,compile-x32)
201 $(call feature_check,bionic) 147 $(call feature_check,bionic)
202 $(call feature_check,libbabeltrace) 148 $(call feature_check,libbabeltrace)
203 else 149 else
204 $(foreach feat,$(FEATURE_TESTS),$(call featu 150 $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
205 endif 151 endif
206 152
207 # 153 #
208 # Print the result of the feature test: 154 # Print the result of the feature test:
209 # 155 #
210 feature_print_status = $(eval $(feature_print_ !! 156 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 <<
220 157
221 define feature_print_status_code 158 define feature_print_status_code
222 ifneq (,$(filter 1,$(foreach feat,$(call fea !! 159 ifeq ($(feature-$(1)), 1)
223 MSG = $(shell printf '...%40s: [ \033[32mo !! 160 MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
224 else 161 else
225 MSG = $(shell printf '...%40s: [ \033[31mO !! 162 MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
226 endif 163 endif
227 endef 164 endef
228 165
229 feature_print_text = $(eval $(feature_print_te !! 166 feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
230 define feature_print_text_code 167 define feature_print_text_code
231 MSG = $(shell printf '...%40s: %s' $(1) $( !! 168 MSG = $(shell printf '...%30s: %s' $(1) $(2))
232 endef 169 endef
233 170
234 # 171 #
235 # generates feature value assignment for name, 172 # generates feature value assignment for name, like:
236 # $(call feature_assign,dwarf) == feature-dw 173 # $(call feature_assign,dwarf) == feature-dwarf=1
237 # 174 #
238 feature_assign = feature-$(1)=$(feature-$(1)) 175 feature_assign = feature-$(1)=$(feature-$(1))
239 176
240 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$ 177 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
241 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_F 178 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
242 179
243 feature_dump_check = $(eval $(feature_dump_che 180 feature_dump_check = $(eval $(feature_dump_check_code))
244 define feature_dump_check_code 181 define feature_dump_check_code
245 ifeq ($(findstring $(1),$(FEATURE_DUMP)),) 182 ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
246 $(2) := 1 183 $(2) := 1
247 endif 184 endif
248 endef 185 endef
249 186
250 # 187 #
251 # First check if any test from FEATURE_DISPLAY 188 # First check if any test from FEATURE_DISPLAY
252 # and set feature_display := 1 if it does 189 # and set feature_display := 1 if it does
253 $(foreach feat,$(FEATURE_DISPLAY),$(call featu 190 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
254 191
255 # 192 #
256 # Now also check if any other test changed, 193 # Now also check if any other test changed,
257 # so we force FEATURE-DUMP generation 194 # so we force FEATURE-DUMP generation
258 $(foreach feat,$(FEATURE_TESTS),$(call feature 195 $(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
259 196
260 # The $(feature_display) controls the default 197 # The $(feature_display) controls the default detection message
261 # output. It's set if: 198 # output. It's set if:
262 # - detected features differes from stored fea 199 # - detected features differes from stored features from
263 # last build (in $(FEATURE_DUMP_FILENAME) fi 200 # last build (in $(FEATURE_DUMP_FILENAME) file)
264 # - one of the $(FEATURE_DISPLAY) is not detec 201 # - one of the $(FEATURE_DISPLAY) is not detected
265 # - VF is enabled 202 # - VF is enabled
266 203
267 ifeq ($(feature_dump_changed),1) 204 ifeq ($(feature_dump_changed),1)
268 $(shell rm -f $(FEATURE_DUMP_FILENAME)) 205 $(shell rm -f $(FEATURE_DUMP_FILENAME))
269 $(foreach feat,$(FEATURE_TESTS),$(shell echo 206 $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
270 endif 207 endif
271 208
272 feature_display_check = $(eval $(feature_check 209 feature_display_check = $(eval $(feature_check_display_code))
273 define feature_check_display_code 210 define feature_check_display_code
274 ifneq ($(feature-$(1)), 1) 211 ifneq ($(feature-$(1)), 1)
275 feature_display := 1 212 feature_display := 1
276 endif 213 endif
277 endef 214 endef
278 215
279 $(foreach feat,$(FEATURE_DISPLAY),$(call featu 216 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
280 217
281 ifeq ($(VF),1) 218 ifeq ($(VF),1)
282 feature_display := 1 219 feature_display := 1
283 feature_verbose := 1 220 feature_verbose := 1
284 endif 221 endif
285 222
286 ifneq ($(feature_verbose),1) !! 223 ifeq ($(feature_display),1)
287 # !! 224 $(info )
288 # Determine the features to omit from the di !! 225 $(info Auto-detecting system features:)
289 # logical OR of the detection result will be !! 226 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
290 # !! 227 ifneq ($(feature_verbose),1)
291 FEATURE_OMIT := $(foreach feat,$(FEATURE_DIS !! 228 $(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),$(call feature_print <<
305 endif 229 endif
306 endef !! 230 endif
307 231
308 ifeq ($(FEATURE_DISPLAY_DEFERRED),) !! 232 ifeq ($(feature_verbose),1)
309 $(call feature_display_entries) !! 233 TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
>> 234 $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
310 $(info ) 235 $(info )
311 endif 236 endif
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