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1feature_dir := $(srctree)/tools/build/feature
2
3ifneq ($(OUTPUT),)
4 OUTPUT_FEATURES = $(OUTPUT)feature/
5 $(shell mkdir -p $(OUTPUT_FEATURES))
6endif
7
8feature_check = $(eval $(feature_check_code))
9define feature_check_code
10 feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) 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)
11endef
12
13feature_set = $(eval $(feature_set_code))
14define feature_set_code
15 feature-$(1) := 1
16endef
17
18#
19# Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:
20#
21
22#
23# Note that this is not a complete list of all feature tests, just
24# those that are typically built on a fully configured system.
25#
26# [ Feature tests not mentioned here have to be built explicitly in
27# the rule that uses them - an example for that is the 'bionic'
28# feature check. ]
29#
30FEATURE_TESTS_BASIC := \
31 backtrace \
32 dwarf \
33 dwarf_getlocations \
34 fortify-source \
35 sync-compare-and-swap \
36 glibc \
37 gtk2 \
38 gtk2-infobar \
39 libaudit \
40 libbfd \
41 libelf \
42 libelf-getphdrnum \
43 libelf-gelf_getnote \
44 libelf-getshdrstrndx \
45 libelf-mmap \
46 libnuma \
47 numa_num_possible_cpus \
48 libperl \
49 libpython \
50 libpython-version \
51 libslang \
52 libcrypto \
53 libunwind \
54 libunwind-x86 \
55 libunwind-x86_64 \
56 libunwind-arm \
57 libunwind-aarch64 \
58 pthread-attr-setaffinity-np \
59 stackprotector-all \
60 timerfd \
61 libdw-dwarf-unwind \
62 zlib \
63 lzma \
64 get_cpuid \
65 bpf \
66 sdt
67
68# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
69# of all feature tests
70FEATURE_TESTS_EXTRA := \
71 bionic \
72 compile-32 \
73 compile-x32 \
74 cplus-demangle \
75 hello \
76 libbabeltrace \
77 liberty \
78 liberty-z \
79 libunwind-debug-frame \
80 libunwind-debug-frame-arm \
81 libunwind-debug-frame-aarch64
82
83FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
84
85ifeq ($(FEATURE_TESTS),all)
86 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
87endif
88
89FEATURE_DISPLAY ?= \
90 dwarf \
91 dwarf_getlocations \
92 glibc \
93 gtk2 \
94 libaudit \
95 libbfd \
96 libelf \
97 libnuma \
98 numa_num_possible_cpus \
99 libperl \
100 libpython \
101 libslang \
102 libcrypto \
103 libunwind \
104 libdw-dwarf-unwind \
105 zlib \
106 lzma \
107 get_cpuid \
108 bpf
109
110# Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
111# If in the future we need per-feature checks/flags for features not
112# mentioned in this list we need to refactor this ;-).
113set_test_all_flags = $(eval $(set_test_all_flags_code))
114define set_test_all_flags_code
115 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
116 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
117endef
118
119$(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
120
121#
122# Special fast-path for the 'all features are available' case:
123#
124$(call feature_check,all,$(MSG))
125
126#
127# Just in case the build freshly failed, make sure we print the
128# feature matrix:
129#
130ifeq ($(feature-all), 1)
131 #
132 # test-all.c passed - just set all the core feature flags to 1:
133 #
134 $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
135 #
136 # test-all.c does not comprise these tests, so we need to
137 # for this case to get features proper values
138 #
139 $(call feature_check,compile-32)
140 $(call feature_check,compile-x32)
141 $(call feature_check,bionic)
142 $(call feature_check,libbabeltrace)
143else
144 $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
145endif
146
147#
148# Print the result of the feature test:
149#
150feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
151
152define feature_print_status_code
153 ifeq ($(feature-$(1)), 1)
154 MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
155 else
156 MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
157 endif
158endef
159
160feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
161define feature_print_text_code
162 MSG = $(shell printf '...%30s: %s' $(1) $(2))
163endef
164
165#
166# generates feature value assignment for name, like:
167# $(call feature_assign,dwarf) == feature-dwarf=1
168#
169feature_assign = feature-$(1)=$(feature-$(1))
170
171FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
172FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
173
174feature_dump_check = $(eval $(feature_dump_check_code))
175define feature_dump_check_code
176 ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
177 $(2) := 1
178 endif
179endef
180
181#
182# First check if any test from FEATURE_DISPLAY
183# and set feature_display := 1 if it does
184$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
185
186#
187# Now also check if any other test changed,
188# so we force FEATURE-DUMP generation
189$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
190
191# The $(feature_display) controls the default detection message
192# output. It's set if:
193# - detected features differes from stored features from
194# last build (in $(FEATURE_DUMP_FILENAME) file)
195# - one of the $(FEATURE_DISPLAY) is not detected
196# - VF is enabled
197
198ifeq ($(feature_dump_changed),1)
199 $(shell rm -f $(FEATURE_DUMP_FILENAME))
200 $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
201endif
202
203feature_display_check = $(eval $(feature_check_display_code))
204define feature_check_display_code
205 ifneq ($(feature-$(1)), 1)
206 feature_display := 1
207 endif
208endef
209
210$(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
211
212ifeq ($(VF),1)
213 feature_display := 1
214 feature_verbose := 1
215endif
216
217ifeq ($(feature_display),1)
218 $(info )
219 $(info Auto-detecting system features:)
220 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
221 ifneq ($(feature_verbose),1)
222 $(info )
223 endif
224endif
225
226ifeq ($(feature_verbose),1)
227 TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
228 $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
229 $(info )
230endif
1feature_dir := $(srctree)/tools/build/feature
2
3ifneq ($(OUTPUT),)
4 OUTPUT_FEATURES = $(OUTPUT)feature/
5 $(shell mkdir -p $(OUTPUT_FEATURES))
6endif
7
8feature_check = $(eval $(feature_check_code))
9define feature_check_code
10 feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
11endef
12
13feature_set = $(eval $(feature_set_code))
14define feature_set_code
15 feature-$(1) := 1
16endef
17
18#
19# Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:
20#
21
22#
23# Note that this is not a complete list of all feature tests, just
24# those that are typically built on a fully configured system.
25#
26# [ Feature tests not mentioned here have to be built explicitly in
27# the rule that uses them - an example for that is the 'bionic'
28# feature check. ]
29#
30FEATURE_TESTS_BASIC := \
31 backtrace \
32 dwarf \
33 dwarf_getlocations \
34 fortify-source \
35 sync-compare-and-swap \
36 glibc \
37 gtk2 \
38 gtk2-infobar \
39 libaudit \
40 libbfd \
41 libelf \
42 libelf-getphdrnum \
43 libelf-mmap \
44 libnuma \
45 numa_num_possible_cpus \
46 libperl \
47 libpython \
48 libpython-version \
49 libslang \
50 libcrypto \
51 libunwind \
52 pthread-attr-setaffinity-np \
53 stackprotector-all \
54 timerfd \
55 libdw-dwarf-unwind \
56 zlib \
57 lzma \
58 get_cpuid \
59 bpf
60
61# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
62# of all feature tests
63FEATURE_TESTS_EXTRA := \
64 bionic \
65 compile-32 \
66 compile-x32 \
67 cplus-demangle \
68 hello \
69 libbabeltrace \
70 liberty \
71 liberty-z \
72 libunwind-debug-frame
73
74FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
75
76ifeq ($(FEATURE_TESTS),all)
77 FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
78endif
79
80FEATURE_DISPLAY ?= \
81 dwarf \
82 dwarf_getlocations \
83 glibc \
84 gtk2 \
85 libaudit \
86 libbfd \
87 libelf \
88 libnuma \
89 numa_num_possible_cpus \
90 libperl \
91 libpython \
92 libslang \
93 libcrypto \
94 libunwind \
95 libdw-dwarf-unwind \
96 zlib \
97 lzma \
98 get_cpuid \
99 bpf
100
101# Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
102# If in the future we need per-feature checks/flags for features not
103# mentioned in this list we need to refactor this ;-).
104set_test_all_flags = $(eval $(set_test_all_flags_code))
105define set_test_all_flags_code
106 FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
107 FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
108endef
109
110$(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
111
112#
113# Special fast-path for the 'all features are available' case:
114#
115$(call feature_check,all,$(MSG))
116
117#
118# Just in case the build freshly failed, make sure we print the
119# feature matrix:
120#
121ifeq ($(feature-all), 1)
122 #
123 # test-all.c passed - just set all the core feature flags to 1:
124 #
125 $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
126 #
127 # test-all.c does not comprise these tests, so we need to
128 # for this case to get features proper values
129 #
130 $(call feature_check,compile-32)
131 $(call feature_check,compile-x32)
132 $(call feature_check,bionic)
133 $(call feature_check,libbabeltrace)
134else
135 $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
136endif
137
138#
139# Print the result of the feature test:
140#
141feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
142
143define feature_print_status_code
144 ifeq ($(feature-$(1)), 1)
145 MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
146 else
147 MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
148 endif
149endef
150
151feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
152define feature_print_text_code
153 MSG = $(shell printf '...%30s: %s' $(1) $(2))
154endef
155
156#
157# generates feature value assignment for name, like:
158# $(call feature_assign,dwarf) == feature-dwarf=1
159#
160feature_assign = feature-$(1)=$(feature-$(1))
161
162FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
163FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
164
165feature_dump_check = $(eval $(feature_dump_check_code))
166define feature_dump_check_code
167 ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
168 $(2) := 1
169 endif
170endef
171
172#
173# First check if any test from FEATURE_DISPLAY
174# and set feature_display := 1 if it does
175$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
176
177#
178# Now also check if any other test changed,
179# so we force FEATURE-DUMP generation
180$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
181
182# The $(feature_display) controls the default detection message
183# output. It's set if:
184# - detected features differes from stored features from
185# last build (in $(FEATURE_DUMP_FILENAME) file)
186# - one of the $(FEATURE_DISPLAY) is not detected
187# - VF is enabled
188
189ifeq ($(feature_dump_changed),1)
190 $(shell rm -f $(FEATURE_DUMP_FILENAME))
191 $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
192endif
193
194feature_display_check = $(eval $(feature_check_display_code))
195define feature_check_display_code
196 ifneq ($(feature-$(1)), 1)
197 feature_display := 1
198 endif
199endef
200
201$(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
202
203ifeq ($(VF),1)
204 feature_display := 1
205 feature_verbose := 1
206endif
207
208ifeq ($(feature_display),1)
209 $(info )
210 $(info Auto-detecting system features:)
211 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
212 ifneq ($(feature_verbose),1)
213 $(info )
214 endif
215endif
216
217ifeq ($(feature_verbose),1)
218 TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
219 $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
220 $(info )
221endif