[deliverable/linux.git] / tools / build / Makefile.feature

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) 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)
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				\
	fortify-source			\
	sync-compare-and-swap		\
	glibc				\
	gtk2				\
	gtk2-infobar			\
	libaudit			\
	libbfd				\
	libelf				\
	libelf-getphdrnum		\
	libelf-mmap			\
	libnuma				\
	numa_num_possible_cpus		\
	libperl				\
	libpython			\
	libpython-version		\
	libslang			\
	libunwind			\
	pthread-attr-setaffinity-np	\
	stackprotector-all		\
	timerfd				\
	libdw-dwarf-unwind		\
	zlib				\
	lzma				\
	get_cpuid			\
	bpf

# 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			\
	liberty				\
	liberty-z			\
	libunwind-debug-frame

FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)

ifeq ($(FEATURE_TESTS),all)
  FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
endif

FEATURE_DISPLAY ?=			\
	dwarf				\
	glibc				\
	gtk2				\
	libaudit			\
	libbfd				\
	libelf				\
	libnuma				\
	numa_num_possible_cpus		\
	libperl				\
	libpython			\
	libslang			\
	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)))
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
Commit	Line	Data
e6c76d62	1	feature_dir := $(srctree)/tools/build/feature
970e87b3	2
0afc5cad	3	ifneq ($(OUTPUT),)
e6c76d62	4	OUTPUT_FEATURES = $(OUTPUT)feature/
0afc5cad JO	5	$(shell mkdir -p $(OUTPUT_FEATURES))
	6	endif
	7
	8	feature_check = $(eval $(feature_check_code))
	9	define feature_check_code
1925459b	10	feature-$(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)
0afc5cad JO	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	#
9fd4186a	30	FEATURE_TESTS_BASIC := \
0afc5cad JO	31	backtrace \
	32	dwarf \
	33	fortify-source \
	34	sync-compare-and-swap \
	35	glibc \
	36	gtk2 \
	37	gtk2-infobar \
	38	libaudit \
	39	libbfd \
	40	libelf \
	41	libelf-getphdrnum \
	42	libelf-mmap \
	43	libnuma \
f8ac8606	44	numa_num_possible_cpus \
0afc5cad JO	45	libperl \
	46	libpython \
	47	libpython-version \
	48	libslang \
	49	libunwind \
	50	pthread-attr-setaffinity-np \
	51	stackprotector-all \
	52	timerfd \
	53	libdw-dwarf-unwind \
6c6f0f61	54	zlib \
b0063dbf	55	lzma \
ed63f34c WN	56	get_cpuid \
ed63f34c WN	57	bpf
0afc5cad	58
9fd4186a WN	59	# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
	60	# of all feature tests
	61	FEATURE_TESTS_EXTRA := \
	62	bionic \
	63	compile-32 \
	64	compile-x32 \
	65	cplus-demangle \
	66	hello \
	67	libbabeltrace \
	68	liberty \
	69	liberty-z \
	70	libunwind-debug-frame
	71
	72	FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
	73
	74	ifeq ($(FEATURE_TESTS),all)
	75	FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
	76	endif
	77
8135c8c7	78	FEATURE_DISPLAY ?= \
0afc5cad JO	79	dwarf \
	80	glibc \
	81	gtk2 \
	82	libaudit \
	83	libbfd \
	84	libelf \
	85	libnuma \
f8ac8606	86	numa_num_possible_cpus \
0afc5cad JO	87	libperl \
	88	libpython \
	89	libslang \
	90	libunwind \
	91	libdw-dwarf-unwind \
6c6f0f61	92	zlib \
b0063dbf	93	lzma \
ed63f34c WN	94	get_cpuid \
ed63f34c WN	95	bpf
0afc5cad JO	96
	97	# Set FEATURE_CHECK_(C\|LD)FLAGS-all for all FEATURE_TESTS features.
	98	# If in the future we need per-feature checks/flags for features not
	99	# mentioned in this list we need to refactor this ;-).
	100	set_test_all_flags = $(eval $(set_test_all_flags_code))
	101	define set_test_all_flags_code
	102	FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
	103	FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
	104	endef
	105
	106	$(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
	107
	108	#
	109	# Special fast-path for the 'all features are available' case:
	110	#
	111	$(call feature_check,all,$(MSG))
	112
	113	#
	114	# Just in case the build freshly failed, make sure we print the
	115	# feature matrix:
	116	#
	117	ifeq ($(feature-all), 1)
	118	#
	119	# test-all.c passed - just set all the core feature flags to 1:
	120	#
	121	$(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
	122	else
0afc5cad JO	123	$(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
	124	endif
	125
	126	#
	127	# Print the result of the feature test:
	128	#
	129	feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
	130
	131	define feature_print_status_code
	132	ifeq ($(feature-$(1)), 1)
	133	MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
	134	else
	135	MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
	136	endif
	137	endef
	138
	139	feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
	140	define feature_print_text_code
	141	MSG = $(shell printf '...%30s: %s' $(1) $(2))
	142	endef
	143
c6a5f88f JO	144	#
	145	# generates feature value assignment for name, like:
	146	# $(call feature_assign,dwarf) == feature-dwarf=1
	147	#
	148	feature_assign = feature-$(1)=$(feature-$(1))
	149
13e96db6	150	FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
936d120d JO	151	FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
	152
	153	feature_dump_check = $(eval $(feature_dump_check_code))
	154	define feature_dump_check_code
	155	ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
	156	$(2) := 1
	157	endif
	158	endef
	159
	160	#
	161	# First check if any test from FEATURE_DISPLAY
	162	# and set feature_display := 1 if it does
	163	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
	164
	165	#
	166	# Now also check if any other test changed,
	167	# so we force FEATURE-DUMP generation
	168	$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
0afc5cad	169
0afc5cad JO	170	# The $(feature_display) controls the default detection message
	171	# output. It's set if:
	172	# - detected features differes from stored features from
13e96db6	173	# last build (in $(FEATURE_DUMP_FILENAME) file)
0afc5cad JO	174	# - one of the $(FEATURE_DISPLAY) is not detected
	175	# - VF is enabled
	176
936d120d JO	177	ifeq ($(feature_dump_changed),1)
	178	$(shell rm -f $(FEATURE_DUMP_FILENAME))
	179	$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
0afc5cad JO	180	endif
0afc5cad JO	181
6076e2a4	182	feature_display_check = $(eval $(feature_check_display_code))
d0018b49	183	define feature_check_display_code
0afc5cad JO	184	ifneq ($(feature-$(1)), 1)
	185	feature_display := 1
	186	endif
	187	endef
	188
	189	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
	190
	191	ifeq ($(VF),1)
	192	feature_display := 1
	193	feature_verbose := 1
	194	endif
	195
	196	ifeq ($(feature_display),1)
	197	$(info )
	198	$(info Auto-detecting system features:)
	199	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
0afc5cad JO	200	ifneq ($(feature_verbose),1)
	201	$(info )
	202	endif
	203	endif
	204
	205	ifeq ($(feature_verbose),1)
	206	TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
	207	$(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
	208	$(info )
	209	endif