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) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) 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 ?= \
32 backtrace \ !! 31 backtrace \
33 dwarf \ !! 32 dwarf \
34 dwarf_getlocations \ !! 33 fortify-source \
35 dwarf_getcfi \ !! 34 sync-compare-and-swap \
36 eventfd \ !! 35 glibc \
37 fortify-source \ !! 36 gtk2 \
38 get_current_dir_name \ !! 37 gtk2-infobar \
39 gettid \ !! 38 libaudit \
40 glibc \ !! 39 libbfd \
41 libbfd \ !! 40 libelf \
42 libbfd-buildid \ !! 41 libelf-getphdrnum \
43 libcap \ !! 42 libelf-mmap \
44 libelf \ !! 43 libnuma \
45 libelf-getphdrnum \ !! 44 numa_num_possible_cpus \
46 libelf-gelf_getnote \ !! 45 libperl \
47 libelf-getshdrstrndx \ !! 46 libpython \
48 libnuma \ !! 47 libpython-version \
49 numa_num_possible_cpus \ !! 48 libslang \
50 libperl \ !! 49 libunwind \
51 libpython \ !! 50 pthread-attr-setaffinity-np \
52 libslang \ !! 51 stackprotector-all \
53 libslang-include-subdir \ !! 52 timerfd \
54 libtraceevent \ !! 53 libdw-dwarf-unwind \
55 libtracefs \ !! 54 zlib \
56 libcrypto \ !! 55 lzma \
57 libunwind \ !! 56 get_cpuid \
58 pthread-attr-setaffinity-np \ !! 57 bpf
59 pthread-barrier \ !! 58
60 reallocarray \ !! 59 FEATURE_DISPLAY ?= \
61 stackprotector-all \ !! 60 dwarf \
62 timerfd \ !! 61 glibc \
63 libdw-dwarf-unwind \ !! 62 gtk2 \
64 zlib \ !! 63 libaudit \
65 lzma \ !! 64 libbfd \
66 get_cpuid \ !! 65 libelf \
67 bpf \ !! 66 libnuma \
68 scandirat \ !! 67 numa_num_possible_cpus \
69 sched_getcpu \ !! 68 libperl \
70 sdt \ !! 69 libpython \
71 setns \ !! 70 libslang \
72 libaio \ !! 71 libunwind \
73 libzstd \ !! 72 libdw-dwarf-unwind \
74 disassembler-four-args \ !! 73 zlib \
75 disassembler-init-styled \ !! 74 lzma \
76 file-handle !! 75 get_cpuid \
77 !! 76 bpf
78 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is <<
79 # of all feature tests <<
80 FEATURE_TESTS_EXTRA := \ <<
81 bionic \ <<
82 compile-32 \ <<
83 compile-x32 \ <<
84 cplus-demangle \ <<
85 cxa-demangle \ <<
86 gtk2 \ <<
87 gtk2-infobar \ <<
88 hello \ <<
89 libbabeltrace \ <<
90 libcapstone \ <<
91 libbfd-liberty \ <<
92 libbfd-liberty-z \ <<
93 libopencsd \ <<
94 libunwind-x86 \ <<
95 libunwind-x86_64 \ <<
96 libunwind-arm \ <<
97 libunwind-aarch64 \ <<
98 libunwind-debug-frame \ <<
99 libunwind-debug-frame-arm \ <<
100 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 <<
116 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC) <<
117 <<
118 ifeq ($(FEATURE_TESTS),all) <<
119 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FE <<
120 endif <<
121 <<
122 FEATURE_DISPLAY ?= \ <<
123 dwarf \ <<
124 dwarf_getlocations \ <<
125 glibc \ <<
126 libbfd \ <<
127 libbfd-buildid \ <<
128 libcap \ <<
129 libelf \ <<
130 libnuma \ <<
131 numa_num_possible_cpus \ <<
132 libperl \ <<
133 libpython \ <<
134 libcrypto \ <<
135 libunwind \ <<
136 libdw-dwarf-unwind \ <<
137 libcapstone \ <<
138 llvm-perf \ <<
139 zlib \ <<
140 lzma \ <<
141 get_cpuid \ <<
142 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 77
170 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FE 78 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
171 # If in the future we need per-feature checks/ 79 # If in the future we need per-feature checks/flags for features not
172 # mentioned in this list we need to refactor t 80 # mentioned in this list we need to refactor this ;-).
173 set_test_all_flags = $(eval $(set_test_all_fla 81 set_test_all_flags = $(eval $(set_test_all_flags_code))
174 define set_test_all_flags_code 82 define set_test_all_flags_code
175 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK 83 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
176 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK 84 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
177 endef 85 endef
178 86
179 $(foreach feat,$(FEATURE_TESTS),$(call set_tes 87 $(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
180 88
181 # 89 #
182 # Special fast-path for the 'all features are 90 # Special fast-path for the 'all features are available' case:
183 # 91 #
184 $(call feature_check,all,$(MSG)) 92 $(call feature_check,all,$(MSG))
185 93
186 # 94 #
187 # Just in case the build freshly failed, make 95 # Just in case the build freshly failed, make sure we print the
188 # feature matrix: 96 # feature matrix:
189 # 97 #
190 ifeq ($(feature-all), 1) 98 ifeq ($(feature-all), 1)
191 # 99 #
192 # test-all.c passed - just set all the core 100 # test-all.c passed - just set all the core feature flags to 1:
193 # 101 #
194 $(foreach feat,$(FEATURE_TESTS),$(call featu 102 $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
195 # <<
196 # test-all.c does not comprise these tests, <<
197 # for this case to get features proper value <<
198 # <<
199 $(call feature_check,compile-32) <<
200 $(call feature_check,compile-x32) <<
201 $(call feature_check,bionic) <<
202 $(call feature_check,libbabeltrace) <<
203 else 103 else
>> 104 $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS)" LDFLAGS=$(LDFLAGS) -i -j -C $(feature_dir) $(addsuffix .bin,$(FEATURE_TESTS)) >/dev/null 2>&1)
204 $(foreach feat,$(FEATURE_TESTS),$(call featu 105 $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
205 endif 106 endif
206 107
207 # 108 #
208 # Print the result of the feature test: 109 # Print the result of the feature test:
209 # 110 #
210 feature_print_status = $(eval $(feature_print_ !! 111 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 <<
220 112
221 define feature_print_status_code 113 define feature_print_status_code
222 ifneq (,$(filter 1,$(foreach feat,$(call fea !! 114 ifeq ($(feature-$(1)), 1)
223 MSG = $(shell printf '...%40s: [ \033[32mo !! 115 MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
224 else 116 else
225 MSG = $(shell printf '...%40s: [ \033[31mO !! 117 MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
226 endif 118 endif
227 endef 119 endef
228 120
229 feature_print_text = $(eval $(feature_print_te !! 121 feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
230 define feature_print_text_code 122 define feature_print_text_code
231 MSG = $(shell printf '...%40s: %s' $(1) $( !! 123 MSG = $(shell printf '...%30s: %s' $(1) $(2))
232 endef 124 endef
233 125
234 # <<
235 # generates feature value assignment for name, <<
236 # $(call feature_assign,dwarf) == feature-dw <<
237 # <<
238 feature_assign = feature-$(1)=$(feature-$(1)) <<
239 <<
240 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$ 126 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
241 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_F !! 127 FEATURE_DUMP := $(foreach feat,$(FEATURE_DISPLAY),feature-$(feat)($(feature-$(feat))))
242 !! 128 FEATURE_DUMP_FILE := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
243 feature_dump_check = $(eval $(feature_dump_che <<
244 define feature_dump_check_code <<
245 ifeq ($(findstring $(1),$(FEATURE_DUMP)),) <<
246 $(2) := 1 <<
247 endif <<
248 endef <<
249 <<
250 # <<
251 # First check if any test from FEATURE_DISPLAY <<
252 # and set feature_display := 1 if it does <<
253 $(foreach feat,$(FEATURE_DISPLAY),$(call featu <<
254 129
255 # !! 130 ifeq ($(dwarf-post-unwind),1)
256 # Now also check if any other test changed, !! 131 FEATURE_DUMP += dwarf-post-unwind($(dwarf-post-unwind-text))
257 # so we force FEATURE-DUMP generation !! 132 endif
258 $(foreach feat,$(FEATURE_TESTS),$(call feature <<
259 133
260 # The $(feature_display) controls the default 134 # The $(feature_display) controls the default detection message
261 # output. It's set if: 135 # output. It's set if:
262 # - detected features differes from stored fea 136 # - detected features differes from stored features from
263 # last build (in $(FEATURE_DUMP_FILENAME) fi 137 # last build (in $(FEATURE_DUMP_FILENAME) file)
264 # - one of the $(FEATURE_DISPLAY) is not detec 138 # - one of the $(FEATURE_DISPLAY) is not detected
265 # - VF is enabled 139 # - VF is enabled
266 140
267 ifeq ($(feature_dump_changed),1) !! 141 ifneq ("$(FEATURE_DUMP)","$(FEATURE_DUMP_FILE)")
268 $(shell rm -f $(FEATURE_DUMP_FILENAME)) !! 142 $(shell echo "$(FEATURE_DUMP)" > $(FEATURE_DUMP_FILENAME))
269 $(foreach feat,$(FEATURE_TESTS),$(shell echo !! 143 feature_display := 1
270 endif 144 endif
271 145
272 feature_display_check = $(eval $(feature_check 146 feature_display_check = $(eval $(feature_check_display_code))
273 define feature_check_display_code !! 147 define feature_display_check_code
274 ifneq ($(feature-$(1)), 1) 148 ifneq ($(feature-$(1)), 1)
275 feature_display := 1 149 feature_display := 1
276 endif 150 endif
277 endef 151 endef
278 152
279 $(foreach feat,$(FEATURE_DISPLAY),$(call featu 153 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
280 154
281 ifeq ($(VF),1) 155 ifeq ($(VF),1)
282 feature_display := 1 156 feature_display := 1
283 feature_verbose := 1 157 feature_verbose := 1
284 endif 158 endif
285 159
286 ifneq ($(feature_verbose),1) !! 160 ifeq ($(feature_display),1)
287 # !! 161 $(info )
288 # Determine the features to omit from the di !! 162 $(info Auto-detecting system features:)
289 # logical OR of the detection result will be !! 163 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
290 # <<
291 FEATURE_OMIT := $(foreach feat,$(FEATURE_DIS <<
292 endif <<
293 164
294 feature_display_entries = $(eval $(feature_dis !! 165 ifeq ($(dwarf-post-unwind),1)
295 define feature_display_entries_code !! 166 $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text))
296 ifeq ($(feature_display),1) <<
297 $$(info ) <<
298 $$(info Auto-detecting system features:) <<
299 $(foreach feat,$(filter-out $(FEATURE_OMIT <<
300 endif 167 endif
301 168
302 ifeq ($(feature_verbose),1) !! 169 ifneq ($(feature_verbose),1)
303 $(eval TMP := $(filter-out $(FEATURE_DISPL !! 170 $(info )
304 $(foreach feat,$(TMP),$(call feature_print <<
305 endif 171 endif
306 endef !! 172 endif
307 173
308 ifeq ($(FEATURE_DISPLAY_DEFERRED),) !! 174 ifeq ($(feature_verbose),1)
309 $(call feature_display_entries) !! 175 TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
>> 176 $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
310 $(info ) 177 $(info )
311 endif 178 endif
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