[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))" 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            \
        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     \
        pthread-barrier     		\
        reallocarray                    \
        stackprotector-all              \
        timerfd                         \
        libdw-dwarf-unwind              \
        zlib                            \
        lzma                            \
        get_cpuid                       \
        bpf                             \
        sched_getcpu			\
        sdt				\
        setns				\
        libopencsd			\
        libaio

# 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  \
         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			\
         libaio

# 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 $(feature_check_code))
	9	define feature_check_code
87095f7d	10	feature-$(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)
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	#
2fedf79b JO	30	FEATURE_TESTS_BASIC := \
	31	backtrace \
	32	dwarf \
	33	dwarf_getlocations \
11c6cbe7	34	eventfd \
2fedf79b JO	35	fortify-source \
2fedf79b JO	36	sync-compare-and-swap \
8feb8efe	37	get_current_dir_name \
2fedf79b JO	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	libunwind-x86 \
	57	libunwind-x86_64 \
	58	libunwind-arm \
	59	libunwind-aarch64 \
	60	pthread-attr-setaffinity-np \
25ab5abf	61	pthread-barrier \
db42a21a	62	reallocarray \
2fedf79b JO	63	stackprotector-all \
	64	timerfd \
	65	libdw-dwarf-unwind \
	66	zlib \
	67	lzma \
	68	get_cpuid \
	69	bpf \
120010cb	70	sched_getcpu \
86bcdb5a	71	sdt \
aa6292f4	72	setns \
2a07d814 AB	73	libopencsd \
2a07d814 AB	74	libaio
0afc5cad	75
9fd4186a WN	76	# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
9fd4186a WN	77	# of all feature tests
2fedf79b JO	78	FEATURE_TESTS_EXTRA := \
	79	bionic \
	80	compile-32 \
	81	compile-x32 \
	82	cplus-demangle \
	83	hello \
	84	libbabeltrace \
	85	liberty \
	86	liberty-z \
	87	libunwind-debug-frame \
	88	libunwind-debug-frame-arm \
bd476684 JO	89	libunwind-debug-frame-aarch64 \
	90	cxx \
	91	llvm \
	92	llvm-version \
	93	clang
9fd4186a WN	94
	95	FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
	96
	97	ifeq ($(FEATURE_TESTS),all)
	98	FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
	99	endif
	100
2fedf79b JO	101	FEATURE_DISPLAY ?= \
	102	dwarf \
	103	dwarf_getlocations \
	104	glibc \
	105	gtk2 \
	106	libaudit \
	107	libbfd \
	108	libelf \
	109	libnuma \
	110	numa_num_possible_cpus \
	111	libperl \
	112	libpython \
	113	libslang \
	114	libcrypto \
	115	libunwind \
	116	libdw-dwarf-unwind \
	117	zlib \
	118	lzma \
	119	get_cpuid \
2a07d814 AB	120	bpf \
2a07d814 AB	121	libaio
0afc5cad JO	122
	123	# Set FEATURE_CHECK_(C\|LD)FLAGS-all for all FEATURE_TESTS features.
	124	# If in the future we need per-feature checks/flags for features not
	125	# mentioned in this list we need to refactor this ;-).
	126	set_test_all_flags = $(eval $(set_test_all_flags_code))
	127	define set_test_all_flags_code
	128	FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
	129	FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
	130	endef
	131
	132	$(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
	133
	134	#
	135	# Special fast-path for the 'all features are available' case:
	136	#
	137	$(call feature_check,all,$(MSG))
	138
	139	#
	140	# Just in case the build freshly failed, make sure we print the
	141	# feature matrix:
	142	#
	143	ifeq ($(feature-all), 1)
	144	#
	145	# test-all.c passed - just set all the core feature flags to 1:
	146	#
	147	$(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
76c4aaec JO	148	#
	149	# test-all.c does not comprise these tests, so we need to
	150	# for this case to get features proper values
	151	#
	152	$(call feature_check,compile-32)
	153	$(call feature_check,compile-x32)
	154	$(call feature_check,bionic)
	155	$(call feature_check,libbabeltrace)
0afc5cad	156	else
0afc5cad JO	157	$(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
	158	endif
	159
	160	#
	161	# Print the result of the feature test:
	162	#
	163	feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
	164
	165	define feature_print_status_code
	166	ifeq ($(feature-$(1)), 1)
	167	MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
	168	else
	169	MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
	170	endif
	171	endef
	172
	173	feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
	174	define feature_print_text_code
	175	MSG = $(shell printf '...%30s: %s' $(1) $(2))
	176	endef
	177
c6a5f88f JO	178	#
	179	# generates feature value assignment for name, like:
	180	# $(call feature_assign,dwarf) == feature-dwarf=1
	181	#
	182	feature_assign = feature-$(1)=$(feature-$(1))
	183
13e96db6	184	FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
936d120d JO	185	FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
	186
	187	feature_dump_check = $(eval $(feature_dump_check_code))
	188	define feature_dump_check_code
	189	ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
	190	$(2) := 1
	191	endif
	192	endef
	193
	194	#
	195	# First check if any test from FEATURE_DISPLAY
	196	# and set feature_display := 1 if it does
	197	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
	198
	199	#
	200	# Now also check if any other test changed,
	201	# so we force FEATURE-DUMP generation
	202	$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
0afc5cad	203
0afc5cad JO	204	# The $(feature_display) controls the default detection message
	205	# output. It's set if:
	206	# - detected features differes from stored features from
13e96db6	207	# last build (in $(FEATURE_DUMP_FILENAME) file)
0afc5cad JO	208	# - one of the $(FEATURE_DISPLAY) is not detected
	209	# - VF is enabled
	210
936d120d JO	211	ifeq ($(feature_dump_changed),1)
	212	$(shell rm -f $(FEATURE_DUMP_FILENAME))
	213	$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
0afc5cad JO	214	endif
0afc5cad JO	215
6076e2a4	216	feature_display_check = $(eval $(feature_check_display_code))
d0018b49	217	define feature_check_display_code
0afc5cad JO	218	ifneq ($(feature-$(1)), 1)
	219	feature_display := 1
	220	endif
	221	endef
	222
	223	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
	224
	225	ifeq ($(VF),1)
	226	feature_display := 1
	227	feature_verbose := 1
	228	endif
	229
	230	ifeq ($(feature_display),1)
	231	$(info )
	232	$(info Auto-detecting system features:)
	233	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
0afc5cad JO	234	ifneq ($(feature_verbose),1)
	235	$(info )
	236	endif
	237	endif
	238
	239	ifeq ($(feature_verbose),1)
	240	TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
	241	$(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
	242	$(info )
	243	endif