[linux-2.6-block.git] / tools / build / Makefile.feature

# 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) 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                          \
        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

# 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

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                 \
         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
Commit	Line	Data
ec8f24b7	1	# SPDX-License-Identifier: GPL-2.0-only
e6c76d62	2	feature_dir := $(srctree)/tools/build/feature
970e87b3	3
0afc5cad	4	ifneq ($(OUTPUT),)
e6c76d62	5	OUTPUT_FEATURES = $(OUTPUT)feature/
0afc5cad JO	6	$(shell mkdir -p $(OUTPUT_FEATURES))
	7	endif
	8
	9	feature_check = $(eval $(feature_check_code))
	10	define feature_check_code
87095f7d	11	feature-$(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	12	endef
	13
	14	feature_set = $(eval $(feature_set_code))
	15	define feature_set_code
	16	feature-$(1) := 1
	17	endef
	18
	19	#
	20	# Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:
	21	#
	22
	23	#
	24	# Note that this is not a complete list of all feature tests, just
	25	# those that are typically built on a fully configured system.
	26	#
	27	# [ Feature tests not mentioned here have to be built explicitly in
	28	# the rule that uses them - an example for that is the 'bionic'
	29	# feature check. ]
	30	#
2fedf79b JO	31	FEATURE_TESTS_BASIC := \
	32	backtrace \
	33	dwarf \
	34	dwarf_getlocations \
11c6cbe7	35	eventfd \
2fedf79b JO	36	fortify-source \
2fedf79b JO	37	sync-compare-and-swap \
8feb8efe	38	get_current_dir_name \
4541a8bb	39	gettid \
2fedf79b JO	40	glibc \
	41	gtk2 \
	42	gtk2-infobar \
	43	libaudit \
	44	libbfd \
74d5f3d0	45	libcap \
2fedf79b JO	46	libelf \
	47	libelf-getphdrnum \
	48	libelf-gelf_getnote \
	49	libelf-getshdrstrndx \
	50	libelf-mmap \
	51	libnuma \
	52	numa_num_possible_cpus \
	53	libperl \
	54	libpython \
	55	libpython-version \
	56	libslang \
cbefd24f	57	libslang-include-subdir \
2fedf79b JO	58	libcrypto \
2fedf79b JO	59	libunwind \
2fedf79b	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 \
8a1b1718	73	libaio \
3b1c5d96	74	libzstd \
8a1b1718	75	disassembler-four-args
0afc5cad	76
9fd4186a WN	77	# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
9fd4186a WN	78	# of all feature tests
2fedf79b JO	79	FEATURE_TESTS_EXTRA := \
	80	bionic \
	81	compile-32 \
	82	compile-x32 \
	83	cplus-demangle \
	84	hello \
	85	libbabeltrace \
14541b1e SF	86	libbfd-liberty \
14541b1e SF	87	libbfd-liberty-z \
1c3b28fd	88	libopencsd \
5c4d7c82 ACM	89	libunwind-x86 \
	90	libunwind-x86_64 \
	91	libunwind-arm \
	92	libunwind-aarch64 \
2fedf79b JO	93	libunwind-debug-frame \
2fedf79b JO	94	libunwind-debug-frame-arm \
bd476684 JO	95	libunwind-debug-frame-aarch64 \
	96	cxx \
	97	llvm \
	98	llvm-version \
7b65e203 JO	99	clang \
7b65e203 JO	100	libbpf
9fd4186a WN	101
	102	FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
	103
	104	ifeq ($(FEATURE_TESTS),all)
	105	FEATURE_TESTS := $(FEATURE_TESTS_BASIC) $(FEATURE_TESTS_EXTRA)
	106	endif
	107
2fedf79b JO	108	FEATURE_DISPLAY ?= \
	109	dwarf \
	110	dwarf_getlocations \
	111	glibc \
	112	gtk2 \
	113	libaudit \
	114	libbfd \
74d5f3d0	115	libcap \
2fedf79b JO	116	libelf \
	117	libnuma \
	118	numa_num_possible_cpus \
	119	libperl \
	120	libpython \
2fedf79b JO	121	libcrypto \
	122	libunwind \
	123	libdw-dwarf-unwind \
	124	zlib \
	125	lzma \
	126	get_cpuid \
2a07d814	127	bpf \
8a1b1718	128	libaio \
3b1c5d96	129	libzstd \
8a1b1718	130	disassembler-four-args
0afc5cad JO	131
	132	# Set FEATURE_CHECK_(C\|LD)FLAGS-all for all FEATURE_TESTS features.
	133	# If in the future we need per-feature checks/flags for features not
	134	# mentioned in this list we need to refactor this ;-).
	135	set_test_all_flags = $(eval $(set_test_all_flags_code))
	136	define set_test_all_flags_code
	137	FEATURE_CHECK_CFLAGS-all += $(FEATURE_CHECK_CFLAGS-$(1))
	138	FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
	139	endef
	140
	141	$(foreach feat,$(FEATURE_TESTS),$(call set_test_all_flags,$(feat)))
	142
	143	#
	144	# Special fast-path for the 'all features are available' case:
	145	#
	146	$(call feature_check,all,$(MSG))
	147
	148	#
	149	# Just in case the build freshly failed, make sure we print the
	150	# feature matrix:
	151	#
	152	ifeq ($(feature-all), 1)
	153	#
	154	# test-all.c passed - just set all the core feature flags to 1:
	155	#
	156	$(foreach feat,$(FEATURE_TESTS),$(call feature_set,$(feat)))
76c4aaec JO	157	#
	158	# test-all.c does not comprise these tests, so we need to
	159	# for this case to get features proper values
	160	#
	161	$(call feature_check,compile-32)
	162	$(call feature_check,compile-x32)
	163	$(call feature_check,bionic)
	164	$(call feature_check,libbabeltrace)
0afc5cad	165	else
0afc5cad JO	166	$(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
	167	endif
	168
	169	#
	170	# Print the result of the feature test:
	171	#
	172	feature_print_status = $(eval $(feature_print_status_code)) $(info $(MSG))
	173
	174	define feature_print_status_code
	175	ifeq ($(feature-$(1)), 1)
	176	MSG = $(shell printf '...%30s: [ \033[32mon\033[m ]' $(1))
	177	else
	178	MSG = $(shell printf '...%30s: [ \033[31mOFF\033[m ]' $(1))
	179	endif
	180	endef
	181
	182	feature_print_text = $(eval $(feature_print_text_code)) $(info $(MSG))
	183	define feature_print_text_code
	184	MSG = $(shell printf '...%30s: %s' $(1) $(2))
	185	endef
	186
c6a5f88f JO	187	#
	188	# generates feature value assignment for name, like:
	189	# $(call feature_assign,dwarf) == feature-dwarf=1
	190	#
	191	feature_assign = feature-$(1)=$(feature-$(1))
	192
13e96db6	193	FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
936d120d JO	194	FEATURE_DUMP := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
	195
	196	feature_dump_check = $(eval $(feature_dump_check_code))
	197	define feature_dump_check_code
	198	ifeq ($(findstring $(1),$(FEATURE_DUMP)),)
	199	$(2) := 1
	200	endif
	201	endef
	202
	203	#
	204	# First check if any test from FEATURE_DISPLAY
	205	# and set feature_display := 1 if it does
	206	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_display))
	207
	208	#
	209	# Now also check if any other test changed,
	210	# so we force FEATURE-DUMP generation
	211	$(foreach feat,$(FEATURE_TESTS),$(call feature_dump_check,$(call feature_assign,$(feat)),feature_dump_changed))
0afc5cad	212
0afc5cad JO	213	# The $(feature_display) controls the default detection message
	214	# output. It's set if:
	215	# - detected features differes from stored features from
13e96db6	216	# last build (in $(FEATURE_DUMP_FILENAME) file)
0afc5cad JO	217	# - one of the $(FEATURE_DISPLAY) is not detected
	218	# - VF is enabled
	219
936d120d JO	220	ifeq ($(feature_dump_changed),1)
	221	$(shell rm -f $(FEATURE_DUMP_FILENAME))
	222	$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
0afc5cad JO	223	endif
0afc5cad JO	224
6076e2a4	225	feature_display_check = $(eval $(feature_check_display_code))
d0018b49	226	define feature_check_display_code
0afc5cad JO	227	ifneq ($(feature-$(1)), 1)
	228	feature_display := 1
	229	endif
	230	endef
	231
	232	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_display_check,$(feat)))
	233
	234	ifeq ($(VF),1)
	235	feature_display := 1
	236	feature_verbose := 1
	237	endif
	238
	239	ifeq ($(feature_display),1)
	240	$(info )
	241	$(info Auto-detecting system features:)
	242	$(foreach feat,$(FEATURE_DISPLAY),$(call feature_print_status,$(feat),))
0afc5cad JO	243	ifneq ($(feature_verbose),1)
	244	$(info )
	245	endif
	246	endif
	247
	248	ifeq ($(feature_verbose),1)
	249	TMP := $(filter-out $(FEATURE_DISPLAY),$(FEATURE_TESTS))
	250	$(foreach feat,$(TMP),$(call feature_print_status,$(feat),))
	251	$(info )
	252	endif