whiterose

linux unikernel
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Makefile.feature (8110B)


      1 feature_dir := $(srctree)/tools/build/feature
      2 
      3 ifneq ($(OUTPUT),)
      4   OUTPUT_FEATURES = $(OUTPUT)feature/
      5   $(shell mkdir -p $(OUTPUT_FEATURES))
      6 endif
      7 
      8 feature_check = $(eval $(feature_check_code))
      9 define feature_check_code
     10   feature-$(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)
     11 endef
     12 
     13 feature_set = $(eval $(feature_set_code))
     14 define feature_set_code
     15   feature-$(1) := 1
     16 endef
     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 #
     30 FEATURE_TESTS_BASIC :=                  \
     31         backtrace                       \
     32         dwarf                           \
     33         dwarf_getlocations              \
     34         eventfd                         \
     35         fortify-source                  \
     36         sync-compare-and-swap           \
     37         get_current_dir_name            \
     38         glibc                           \
     39         gtk2                            \
     40         gtk2-infobar                    \
     41         libaudit                        \
     42         libbfd                          \
     43         libelf                          \
     44         libelf-getphdrnum               \
     45         libelf-gelf_getnote             \
     46         libelf-getshdrstrndx            \
     47         libelf-mmap                     \
     48         libnuma                         \
     49         numa_num_possible_cpus          \
     50         libperl                         \
     51         libpython                       \
     52         libpython-version               \
     53         libslang                        \
     54         libcrypto                       \
     55         libunwind                       \
     56         pthread-attr-setaffinity-np     \
     57         pthread-barrier     		\
     58         reallocarray                    \
     59         stackprotector-all              \
     60         timerfd                         \
     61         libdw-dwarf-unwind              \
     62         zlib                            \
     63         lzma                            \
     64         get_cpuid                       \
     65         bpf                             \
     66         sched_getcpu			\
     67         sdt				\
     68         setns				\
     69         libaio				\
     70         disassembler-four-args
     71 
     72 # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
     73 # of all feature tests
     74 FEATURE_TESTS_EXTRA :=                  \
     75          bionic                         \
     76          compile-32                     \
     77          compile-x32                    \
     78          cplus-demangle                 \
     79          hello                          \
     80          libbabeltrace                  \
     81          libbfd-liberty                 \
     82          libbfd-liberty-z               \
     83          libopencsd                     \
     84          libunwind-x86                  \
     85          libunwind-x86_64               \
     86          libunwind-arm                  \
     87          libunwind-aarch64              \
     88          libunwind-debug-frame          \
     89          libunwind-debug-frame-arm      \
     90          libunwind-debug-frame-aarch64  \
     91          cxx                            \
     92          llvm                           \
     93          llvm-version                   \
     94          clang
     95 
     96 FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
     97 
     98 ifeq ($(FEATURE_TESTS),all)
     99   FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
    100 endif
    101 
    102 FEATURE_DISPLAY ?=              \
    103          dwarf                  \
    104          dwarf_getlocations     \
    105          glibc                  \
    106          gtk2                   \
    107          libaudit               \
    108          libbfd                 \
    109          libelf                 \
    110          libnuma                \
    111          numa_num_possible_cpus \
    112          libperl                \
    113          libpython              \
    114          libslang               \
    115          libcrypto              \
    116          libunwind              \
    117          libdw-dwarf-unwind     \
    118          zlib                   \
    119          lzma                   \
    120          get_cpuid              \
    121          bpf			\
    122          libaio			\
    123          disassembler-four-args
    124 
    125 # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
    126 # If in the future we need per-feature checks/flags for features not
    127 # mentioned in this list we need to refactor this ;-).
    128 set_test_all_flags = $(eval $(set_test_all_flags_code))
    129 define set_test_all_flags_code
    130   FEATURE_CHECK_CFLAGS-all  += $(FEATURE_CHECK_CFLAGS-$(1))
    131   FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
    132 endef
    133 
    134 $(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
    135 
    136 #
    137 # Special fast-path for the 'all features are available' case:
    138 #
    139 $(call feature_check,all,$(MSG))
    140 
    141 #
    142 # Just in case the build freshly failed, make sure we print the
    143 # feature matrix:
    144 #
    145 ifeq ($(feature-all), 1)
    146   #
    147   # test-all.c passed - just set all the core feature flags to 1:
    148   #
    149   $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
    150   #
    151   # test-all.c does not comprise these tests, so we need to
    152   # for this case to get features proper values
    153   #
    154   $(call feature_check,compile-32)
    155   $(call feature_check,compile-x32)
    156   $(call feature_check,bionic)
    157   $(call feature_check,libbabeltrace)
    158 else
    159   $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
    160 endif
    161 
    162 #
    163 # Print the result of the feature test:
    164 #
    165 feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
    166 
    167 define feature_print_status_code
    168   ifeq ($(feature-$(1)), 1)
    169     MSG = $(shell printf '...%30s: [ \033[32mon\033[m  ]' $(1))
    170   else
    171     MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
    172   endif
    173 endef
    174 
    175 feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
    176 define feature_print_text_code
    177     MSG = $(shell printf '...%30s: %s' $(1) $(2))
    178 endef
    179 
    180 #
    181 # generates feature value assignment for name, like:
    182 #   $(call feature_assign,dwarf) == feature-dwarf=1
    183 #
    184 feature_assign = feature-$(1)=$(feature-$(1))
    185 
    186 FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
    187 FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
    188 
    189 feature_dump_check = $(eval $(feature_dump_check_code))
    190 define feature_dump_check_code
    191   ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
    192     $(2) := 1
    193   endif
    194 endef
    195 
    196 #
    197 # First check if any test from FEATURE_DISPLAY
    198 # and set feature_display := 1 if it does
    199 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
    200 
    201 #
    202 # Now also check if any other test changed,
    203 # so we force FEATURE-DUMP generation
    204 $(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
    205 
    206 # The $(feature_display) controls the default detection message
    207 # output. It's set if:
    208 # - detected features differes from stored features from
    209 #   last build (in $(FEATURE_DUMP_FILENAME) file)
    210 # - one of the $(FEATURE_DISPLAY) is not detected
    211 # - VF is enabled
    212 
    213 ifeq ($(feature_dump_changed),1)
    214   $(shell rm -f $(FEATURE_DUMP_FILENAME))
    215   $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
    216 endif
    217 
    218 feature_display_check = $(eval $(feature_check_display_code))
    219 define feature_check_display_code
    220   ifneq ($(feature-$(1)), 1)
    221     feature_display := 1
    222   endif
    223 endef
    224 
    225 $(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
    226 
    227 ifeq ($(VF),1)
    228   feature_display := 1
    229   feature_verbose := 1
    230 endif
    231 
    232 ifeq ($(feature_display),1)
    233   $(info )
    234   $(info Auto-detecting system features:)
    235   $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
    236   ifneq ($(feature_verbose),1)
    237     $(info )
    238   endif
    239 endif
    240 
    241 ifeq ($(feature_verbose),1)
    242   TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
    243   $(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
    244   $(info )
    245 endif