# SPDX-License-Identifier: GPL-2.0-onlyfeature_dir := $(srctree)/tools/build/feature ifneq ($(OUTPUT),) OUTPUT_FEATURES = $(OUTPUT)feature/ $(shell mkdir -p $(OUTPUT_FEATURES))endif feature_check = $(eval $(feature_check_code))define feature_check_code feature-$(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)endef feature_set = $(eval $(feature_set_code))define feature_set_code feature-$(1) := 1endef ## Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:# ## Note that this is not a complete list of all feature tests, just# those that are typically built on a fully configured system.## [ Feature tests not mentioned here have to be built explicitly in# the rule that uses them - an example for that is the 'bionic'# feature check. ]#FEATURE_TESTS_BASIC := \ backtrace \ dwarf \ dwarf_getlocations \ eventfd \ fortify-source \ sync-compare-and-swap \ get_current_dir_name \ gettid \ glibc \ gtk2 \ gtk2-infobar \ libbfd \ libcap \ libelf \ libelf-getphdrnum \ libelf-gelf_getnote \ libelf-getshdrstrndx \ libelf-mmap \ libnuma \ numa_num_possible_cpus \ libperl \ libpython \ libpython-version \ libslang \ libslang-include-subdir \ libcrypto \ libunwind \ pthread-attr-setaffinity-np \ pthread-barrier \ reallocarray \ stackprotector-all \ timerfd \ libdw-dwarf-unwind \ zlib \ lzma \ get_cpuid \ bpf \ sched_getcpu \ sdt \ setns \ libaio \ libzstd \ disassembler-four-args \ file-handle # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list# of all feature testsFEATURE_TESTS_EXTRA := \ bionic \ compile-32 \ compile-x32 \ cplus-demangle \ hello \ libbabeltrace \ libbfd-liberty \ libbfd-liberty-z \ libopencsd \ libunwind-x86 \ libunwind-x86_64 \ libunwind-arm \ libunwind-aarch64 \ libunwind-debug-frame \ libunwind-debug-frame-arm \ libunwind-debug-frame-aarch64 \ cxx \ llvm \ llvm-version \ clang \ libbpf \ libpfm4 \ libdebuginfod FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC) ifeq ($(FEATURE_TESTS),all) FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)endif FEATURE_DISPLAY ?= \ dwarf \ dwarf_getlocations \ glibc \ gtk2 \ libbfd \ libcap \ libelf \ libnuma \ numa_num_possible_cpus \ libperl \ libpython \ libcrypto \ libunwind \ libdw-dwarf-unwind \ zlib \ lzma \ get_cpuid \ bpf \ libaio \ libzstd \ disassembler-four-args # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.# If in the future we need per-feature checks/flags for features not# mentioned in this list we need to refactor this ;-).set_test_all_flags = $(eval $(set_test_all_flags_code))define set_test_all_flags_code FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1)) FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))endef $(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat))) ## Special fast-path for the 'all features are available' case:#$(call feature_check,all,$(MSG)) ## Just in case the build freshly failed, make sure we print the# feature matrix:#ifeq ($(feature-all), 1) # # test-all.c passed - just set all the core feature flags to 1: # $(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat))) # # test-all.c does not comprise these tests, so we need to # for this case to get features proper values # $(call feature_check,compile-32) $(call feature_check,compile-x32) $(call feature_check,bionic) $(call feature_check,libbabeltrace)else $(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))endif ## Print the result of the feature test:#feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG)) define feature_print_status_code ifeq ($(feature-$(1)), 1) MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1)) else MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1)) endifendef feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))define feature_print_text_code MSG = $(shell printf '...%30s: %s' $(1) $(2))endef ## generates feature value assignment for name, like:# $(call feature_assign,dwarf) == feature-dwarf=1#feature_assign = feature-$(1)=$(feature-$(1)) FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME)) feature_dump_check = $(eval $(feature_dump_check_code))define feature_dump_check_code ifeq ($(findstring $(1),$(FEATURE_DUMP)),) $(2) := 1 endifendef ## First check if any test from FEATURE_DISPLAY# and set feature_display := 1 if it does$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display)) ## Now also check if any other test changed,# so we force FEATURE-DUMP generation$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed)) # The $(feature_display) controls the default detection message# output. It's set if:# - detected features differes from stored features from# last build (in $(FEATURE_DUMP_FILENAME) file)# - one of the $(FEATURE_DISPLAY) is not detected# - VF is enabled ifeq ($(feature_dump_changed),1) $(shell rm -f $(FEATURE_DUMP_FILENAME)) $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))endif feature_display_check = $(eval $(feature_check_display_code))define feature_check_display_code ifneq ($(feature-$(1)), 1) feature_display := 1 endifendef $(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat))) ifeq ($(VF),1) feature_display := 1 feature_verbose := 1endif ifeq ($(feature_display),1) $(info ) $(info Auto-detecting system features:) $(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),)) ifneq ($(feature_verbose),1) $(info ) endifendif ifeq ($(feature_verbose),1) TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS)) $(foreach feat,$(TMP),$(call feature_print_status,$(feat),)) $(info )endif
# SPDX-License-Identifier: GPL-2.0-only
feature_dir := $(srctree)/tools/build/feature
ifneq ($(OUTPUT),)
OUTPUT_FEATURES = $(OUTPUT)feature/
$(shell mkdir -p $(OUTPUT_FEATURES))
endif
feature_check = $(eval $(feature_check_code))
define feature_check_code
feature-$(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)
endef
feature_set = $(eval $(feature_set_code))
define feature_set_code
feature-$(1) := 1
endef
#
# Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:
#
#
# Note that this is not a complete list of all feature tests, just
# those that are typically built on a fully configured system.
#
# [ Feature tests not mentioned here have to be built explicitly in
# the rule that uses them - an example for that is the 'bionic'
# feature check. ]
#
FEATURE_TESTS_BASIC := \
backtrace \
dwarf \
dwarf_getlocations \
eventfd \
fortify-source \
sync-compare-and-swap \
get_current_dir_name \
gettid \
glibc \
gtk2 \
gtk2-infobar \
libbfd \
libcap \
libelf \
libelf-getphdrnum \
libelf-gelf_getnote \
libelf-getshdrstrndx \
libelf-mmap \
libnuma \
numa_num_possible_cpus \
libperl \
libpython \
libpython-version \
libslang \
libslang-include-subdir \
libcrypto \
libunwind \
pthread-attr-setaffinity-np \
pthread-barrier \
reallocarray \
stackprotector-all \
timerfd \
libdw-dwarf-unwind \
zlib \
lzma \
get_cpuid \
bpf \
sched_getcpu \
sdt \
setns \
libaio \
libzstd \
disassembler-four-args \
file-handle
# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
# of all feature tests
FEATURE_TESTS_EXTRA := \
bionic \
compile-32 \
compile-x32 \
cplus-demangle \
hello \
libbabeltrace \
libbfd-liberty \
libbfd-liberty-z \
libopencsd \
libunwind-x86 \
libunwind-x86_64 \
libunwind-arm \
libunwind-aarch64 \
libunwind-debug-frame \
libunwind-debug-frame-arm \
libunwind-debug-frame-aarch64 \
cxx \
llvm \
llvm-version \
clang \
libbpf \
libpfm4 \
libdebuginfod
FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
ifeq ($(FEATURE_TESTS),all)
FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
endif
FEATURE_DISPLAY ?= \
dwarf \
dwarf_getlocations \
glibc \
gtk2 \
libbfd \
libcap \
libelf \
libnuma \
numa_num_possible_cpus \
libperl \
libpython \
libcrypto \
libunwind \
libdw-dwarf-unwind \
zlib \
lzma \
get_cpuid \
bpf \
libaio \
libzstd \
disassembler-four-args
# Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features.
# If in the future we need per-feature checks/flags for features not
# mentioned in this list we need to refactor this ;-).
set_test_all_flags = $(eval $(set_test_all_flags_code))
define set_test_all_flags_code
FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
endef
$(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
#
# Special fast-path for the 'all features are available' case:
#
$(call feature_check,all,$(MSG))
#
# Just in case the build freshly failed, make sure we print the
# feature matrix:
#
ifeq ($(feature-all), 1)
#
# test-all.c passed - just set all the core feature flags to 1:
#
$(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
#
# test-all.c does not comprise these tests, so we need to
# for this case to get features proper values
#
$(call feature_check,compile-32)
$(call feature_check,compile-x32)
$(call feature_check,bionic)
$(call feature_check,libbabeltrace)
else
$(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
endif
#
# Print the result of the feature test:
#
feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
define feature_print_status_code
ifeq ($(feature-$(1)), 1)
MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
else
MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
endif
endef
feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
define feature_print_text_code
MSG = $(shell printf '...%30s: %s' $(1) $(2))
endef
#
# generates feature value assignment for name, like:
# $(call feature_assign,dwarf) == feature-dwarf=1
#
feature_assign = feature-$(1)=$(feature-$(1))
FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
feature_dump_check = $(eval $(feature_dump_check_code))
define feature_dump_check_code
ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
$(2) := 1
endif
endef
#
# First check if any test from FEATURE_DISPLAY
# and set feature_display := 1 if it does
$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
#
# Now also check if any other test changed,
# so we force FEATURE-DUMP generation
$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
# The $(feature_display) controls the default detection message
# output. It's set if:
# - detected features differes from stored features from
# last build (in $(FEATURE_DUMP_FILENAME) file)
# - one of the $(FEATURE_DISPLAY) is not detected
# - VF is enabled
ifeq ($(feature_dump_changed),1)
$(shell rm -f $(FEATURE_DUMP_FILENAME))
$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
endif
feature_display_check = $(eval $(feature_check_display_code))
define feature_check_display_code
ifneq ($(feature-$(1)), 1)
feature_display := 1
endif
endef
$(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
ifeq ($(VF),1)
feature_display := 1
feature_verbose := 1
endif
ifeq ($(feature_display),1)
$(info )
$(info Auto-detecting system features:)
$(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
ifneq ($(feature_verbose),1)
$(info )
endif
endif
ifeq ($(feature_verbose),1)
TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
$(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
$(info )
endif