[linux-2.6-block.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				\
	dwarf_getlocations		\
	fortify-source			\
	sync-compare-and-swap		\
	glibc				\
	gtk2				\
	gtk2-infobar			\
	libaudit			\
	libbfd				\
	libelf				\
	libelf-getphdrnum		\
	libelf-gelf_getnote		\
	libelf-getshdrstrndx		\
	libelf-mmap			\
	libnuma				\
	numa_num_possible_cpus		\
	libperl				\
	libpython			\
	libpython-version		\
	libslang			\
	libcrypto			\
	libunwind			\
	libunwind-x86			\
	libunwind-x86_64		\
	libunwind-arm			\
	libunwind-aarch64		\
	pthread-attr-setaffinity-np	\
	stackprotector-all		\
	timerfd				\
	libdw-dwarf-unwind		\
	zlib				\
	lzma				\
	get_cpuid			\
	bpf				\
	sdt

# 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		\
	libunwind-debug-frame-arm	\
	libunwind-debug-frame-aarch64

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
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 \
0afc5cad JO	32	dwarf \
bd0419e2	33	dwarf_getlocations \
0afc5cad JO	34	fortify-source \
	35	sync-compare-and-swap \
	36	glibc \
	37	gtk2 \
	38	gtk2-infobar \
	39	libaudit \
	40	libbfd \
	41	libelf \
	42	libelf-getphdrnum \
1c1a3a47	43	libelf-gelf_getnote \
2492c465	44	libelf-getshdrstrndx \
0afc5cad JO	45	libelf-mmap \
0afc5cad JO	46	libnuma \
f8ac8606	47	numa_num_possible_cpus \
0afc5cad JO	48	libperl \
	49	libpython \
	50	libpython-version \
	51	libslang \
8ee46460	52	libcrypto \
0afc5cad	53	libunwind \
b1d96000 HK	54	libunwind-x86 \
	55	libunwind-x86_64 \
	56	libunwind-arm \
	57	libunwind-aarch64 \
0afc5cad JO	58	pthread-attr-setaffinity-np \
	59	stackprotector-all \
	60	timerfd \
	61	libdw-dwarf-unwind \
6c6f0f61	62	zlib \
b0063dbf	63	lzma \
ed63f34c	64	get_cpuid \
e26e63be MH	65	bpf \
e26e63be MH	66	sdt
0afc5cad	67
9fd4186a WN	68	# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
	69	# of all feature tests
	70	FEATURE_TESTS_EXTRA := \
	71	bionic \
	72	compile-32 \
	73	compile-x32 \
	74	cplus-demangle \
	75	hello \
	76	libbabeltrace \
	77	liberty \
	78	liberty-z \
f9be7eef HK	79	libunwind-debug-frame \
	80	libunwind-debug-frame-arm \
	81	libunwind-debug-frame-aarch64
9fd4186a WN	82
	83	FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
	84
	85	ifeq ($(FEATURE_TESTS),all)
	86	FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
	87	endif
	88
8135c8c7	89	FEATURE_DISPLAY ?= \
0afc5cad	90	dwarf \
bd0419e2	91	dwarf_getlocations \
0afc5cad JO	92	glibc \
	93	gtk2 \
	94	libaudit \
	95	libbfd \
	96	libelf \
	97	libnuma \
f8ac8606	98	numa_num_possible_cpus \
0afc5cad JO	99	libperl \
	100	libpython \
	101	libslang \
8ee46460	102	libcrypto \
0afc5cad JO	103	libunwind \
0afc5cad JO	104	libdw-dwarf-unwind \
6c6f0f61	105	zlib \
b0063dbf	106	lzma \
ed63f34c WN	107	get_cpuid \
ed63f34c WN	108	bpf
0afc5cad JO	109
	110	# Set FEATURE_CHECK_(C\|LD)FLAGS-all for all FEATURE_TESTS features.
	111	# If in the future we need per-feature checks/flags for features not
	112	# mentioned in this list we need to refactor this ;-).
	113	set_test_all_flags = $(eval $(set_test_all_flags_code))
	114	define set_test_all_flags_code
	115	FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
	116	FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
	117	endef
	118
	119	$(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
	120
	121	#
	122	# Special fast-path for the 'all features are available' case:
	123	#
	124	$(call feature_check,all,$(MSG))
	125
	126	#
	127	# Just in case the build freshly failed, make sure we print the
	128	# feature matrix:
	129	#
	130	ifeq ($(feature-all), 1)
	131	#
	132	# test-all.c passed - just set all the core feature flags to 1:
	133	#
	134	$(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
76c4aaec JO	135	#
	136	# test-all.c does not comprise these tests, so we need to
	137	# for this case to get features proper values
	138	#
	139	$(call feature_check,compile-32)
	140	$(call feature_check,compile-x32)
	141	$(call feature_check,bionic)
	142	$(call feature_check,libbabeltrace)
0afc5cad	143	else
0afc5cad JO	144	$(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
	145	endif
	146
	147	#
	148	# Print the result of the feature test:
	149	#
	150	feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
	151
	152	define feature_print_status_code
	153	ifeq ($(feature-$(1)), 1)
	154	MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
	155	else
	156	MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
	157	endif
	158	endef
	159
	160	feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
	161	define feature_print_text_code
	162	MSG = $(shell printf '...%30s: %s' $(1) $(2))
	163	endef
	164
c6a5f88f JO	165	#
	166	# generates feature value assignment for name, like:
	167	# $(call feature_assign,dwarf) == feature-dwarf=1
	168	#
	169	feature_assign = feature-$(1)=$(feature-$(1))
	170
13e96db6	171	FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
936d120d JO	172	FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
	173
	174	feature_dump_check = $(eval $(feature_dump_check_code))
	175	define feature_dump_check_code
	176	ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
	177	$(2) := 1
	178	endif
	179	endef
	180
	181	#
	182	# First check if any test from FEATURE_DISPLAY
	183	# and set feature_display := 1 if it does
	184	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
	185
	186	#
	187	# Now also check if any other test changed,
	188	# so we force FEATURE-DUMP generation
	189	$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
0afc5cad	190
0afc5cad JO	191	# The $(feature_display) controls the default detection message
	192	# output. It's set if:
	193	# - detected features differes from stored features from
13e96db6	194	# last build (in $(FEATURE_DUMP_FILENAME) file)
0afc5cad JO	195	# - one of the $(FEATURE_DISPLAY) is not detected
	196	# - VF is enabled
	197
936d120d JO	198	ifeq ($(feature_dump_changed),1)
	199	$(shell rm -f $(FEATURE_DUMP_FILENAME))
	200	$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
0afc5cad JO	201	endif
0afc5cad JO	202
6076e2a4	203	feature_display_check = $(eval $(feature_check_display_code))
d0018b49	204	define feature_check_display_code
0afc5cad JO	205	ifneq ($(feature-$(1)), 1)
	206	feature_display := 1
	207	endif
	208	endef
	209
	210	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
	211
	212	ifeq ($(VF),1)
	213	feature_display := 1
	214	feature_verbose := 1
	215	endif
	216
	217	ifeq ($(feature_display),1)
	218	$(info )
	219	$(info Auto-detecting system features:)
	220	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
0afc5cad JO	221	ifneq ($(feature_verbose),1)
	222	$(info )
	223	endif
	224	endif
	225
	226	ifeq ($(feature_verbose),1)
	227	TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
	228	$(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
	229	$(info )
	230	endif