xref: /openbmc/linux/tools/build/Makefile.feature (revision ba61bb17) 
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        pthread-barrier     		\
60        stackprotector-all              \
61        timerfd                         \
62        libdw-dwarf-unwind              \
63        zlib                            \
64        lzma                            \
65        get_cpuid                       \
66        bpf                             \
67        sched_getcpu			\
68        sdt				\
69        setns				\
70        libopencsd
71
72# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
73# of all feature tests
74FEATURE_TESTS_EXTRA :=                  \
75         bionic                         \
76         compile-32                     \
77         compile-x32                    \
78         cplus-demangle                 \
79         hello                          \
80         libbabeltrace                  \
81         liberty                        \
82         liberty-z                      \
83         libunwind-debug-frame          \
84         libunwind-debug-frame-arm      \
85         libunwind-debug-frame-aarch64  \
86         cxx                            \
87         llvm                           \
88         llvm-version                   \
89         clang
90
91FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
92
93ifeq ($(FEATURE_TESTS),all)
94  FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
95endif
96
97FEATURE_DISPLAY ?=              \
98         dwarf                  \
99         dwarf_getlocations     \
100         glibc                  \
101         gtk2                   \
102         libaudit               \
103         libbfd                 \
104         libelf                 \
105         libnuma                \
106         numa_num_possible_cpus \
107         libperl                \
108         libpython              \
109         libslang               \
110         libcrypto              \
111         libunwind              \
112         libdw-dwarf-unwind     \
113         zlib                   \
114         lzma                   \
115         get_cpuid              \
116         bpf
117
118# Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
119# If in the future we need per-feature checks/flags for features not
120# mentioned in this list we need to refactor this ;-).
121set_test_all_flags = $(eval $(set_test_all_flags_code))
122define set_test_all_flags_code
123  FEATURE_CHECK_CFLAGS-all  += $(FEATURE_CHECK_CFLAGS-$(1))
124  FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
125endef
126
127$(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
128
129#
130# Special fast-path for the 'all features are available' case:
131#
132$(call feature_check,all,$(MSG))
133
134#
135# Just in case the build freshly failed, make sure we print the
136# feature matrix:
137#
138ifeq ($(feature-all), 1)
139  #
140  # test-all.c passed - just set all the core feature flags to 1:
141  #
142  $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
143  #
144  # test-all.c does not comprise these tests, so we need to
145  # for this case to get features proper values
146  #
147  $(call feature_check,compile-32)
148  $(call feature_check,compile-x32)
149  $(call feature_check,bionic)
150  $(call feature_check,libbabeltrace)
151else
152  $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
153endif
154
155#
156# Print the result of the feature test:
157#
158feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
159
160define feature_print_status_code
161  ifeq ($(feature-$(1)), 1)
162    MSG = $(shell printf '...%30s: [ \033[32mon\033[m  ]' $(1))
163  else
164    MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
165  endif
166endef
167
168feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
169define feature_print_text_code
170    MSG = $(shell printf '...%30s: %s' $(1) $(2))
171endef
172
173#
174# generates feature value assignment for name, like:
175#   $(call feature_assign,dwarf) == feature-dwarf=1
176#
177feature_assign = feature-$(1)=$(feature-$(1))
178
179FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
180FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
181
182feature_dump_check = $(eval $(feature_dump_check_code))
183define feature_dump_check_code
184  ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
185    $(2) := 1
186  endif
187endef
188
189#
190# First check if any test from FEATURE_DISPLAY
191# and set feature_display := 1 if it does
192$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
193
194#
195# Now also check if any other test changed,
196# so we force FEATURE-DUMP generation
197$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
198
199# The $(feature_display) controls the default detection message
200# output. It's set if:
201# - detected features differes from stored features from
202#   last build (in $(FEATURE_DUMP_FILENAME) file)
203# - one of the $(FEATURE_DISPLAY) is not detected
204# - VF is enabled
205
206ifeq ($(feature_dump_changed),1)
207  $(shell rm -f $(FEATURE_DUMP_FILENAME))
208  $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
209endif
210
211feature_display_check = $(eval $(feature_check_display_code))
212define feature_check_display_code
213  ifneq ($(feature-$(1)), 1)
214    feature_display := 1
215  endif
216endef
217
218$(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
219
220ifeq ($(VF),1)
221  feature_display := 1
222  feature_verbose := 1
223endif
224
225ifeq ($(feature_display),1)
226  $(info )
227  $(info Auto-detecting system features:)
228  $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
229  ifneq ($(feature_verbose),1)
230    $(info )
231  endif
232endif
233
234ifeq ($(feature_verbose),1)
235  TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
236  $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
237  $(info )
238endif
239