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 \
|
libaudit \
|
libbfd \
|
libelf \
|
libelf-getphdrnum \
|
libelf-gelf_getnote \
|
libelf-getshdrstrndx \
|
libelf-mmap \
|
libnuma \
|
numa_num_possible_cpus \
|
libperl \
|
libpython \
|
libslang \
|
libcrypto \
|
libunwind \
|
libunwind-x86 \
|
libunwind-x86_64 \
|
libunwind-arm \
|
libunwind-aarch64 \
|
pthread-attr-setaffinity-np \
|
pthread-barrier \
|
reallocarray \
|
stackprotector-all \
|
timerfd \
|
libdw-dwarf-unwind \
|
zlib \
|
lzma \
|
get_cpuid \
|
bpf \
|
sched_getcpu \
|
sdt \
|
setns \
|
libopencsd
|
|
# 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 \
|
libunwind-debug-frame \
|
libunwind-debug-frame-arm \
|
libunwind-debug-frame-aarch64 \
|
cxx \
|
llvm \
|
llvm-version \
|
clang
|
|
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 \
|
libaudit \
|
libbfd \
|
libelf \
|
libnuma \
|
numa_num_possible_cpus \
|
libperl \
|
libpython \
|
libslang \
|
libcrypto \
|
libunwind \
|
libdw-dwarf-unwind \
|
zlib \
|
lzma \
|
get_cpuid \
|
bpf
|
|
# 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
|
