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OSCL-LXR
 
 

     

0001 # SPDX-License-Identifier: GPL-2.0-only
0002 
0003 ifeq ($(src-perf),)
0004 src-perf := $(srctree)/tools/perf
0005 endif
0006 
0007 ifeq ($(obj-perf),)
0008 obj-perf := $(OUTPUT)
0009 endif
0010 
0011 ifneq ($(obj-perf),)
0012 obj-perf := $(abspath $(obj-perf))/
0013 endif
0014 
0015 $(shell printf "" > $(OUTPUT).config-detected)
0016 detected     = $(shell echo "$(1)=y"       >> $(OUTPUT).config-detected)
0017 detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)
0018 
0019 CFLAGS := $(EXTRA_CFLAGS) $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
0020 HOSTCFLAGS := $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
0021 
0022 include $(srctree)/tools/scripts/Makefile.arch
0023 
0024 $(call detected_var,SRCARCH)
0025 
0026 NO_PERF_REGS := 1
0027 
0028 ifneq ($(NO_SYSCALL_TABLE),1)
0029   NO_SYSCALL_TABLE := 1
0030 
0031   ifeq ($(SRCARCH),x86)
0032     ifeq (${IS_64_BIT}, 1)
0033       NO_SYSCALL_TABLE := 0
0034     endif
0035   else
0036     ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc arm64 s390 mips))
0037       NO_SYSCALL_TABLE := 0
0038     endif
0039   endif
0040 
0041   ifneq ($(NO_SYSCALL_TABLE),1)
0042     CFLAGS += -DHAVE_SYSCALL_TABLE_SUPPORT
0043   endif
0044 endif
0045 
0046 # Additional ARCH settings for ppc
0047 ifeq ($(SRCARCH),powerpc)
0048   NO_PERF_REGS := 0
0049   CFLAGS += -I$(OUTPUT)arch/powerpc/include/generated
0050   LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
0051 endif
0052 
0053 # Additional ARCH settings for x86
0054 ifeq ($(SRCARCH),x86)
0055   $(call detected,CONFIG_X86)
0056   ifeq (${IS_64_BIT}, 1)
0057     CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT -I$(OUTPUT)arch/x86/include/generated
0058     ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
0059     LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
0060     $(call detected,CONFIG_X86_64)
0061   else
0062     LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
0063   endif
0064   NO_PERF_REGS := 0
0065 endif
0066 
0067 ifeq ($(SRCARCH),arm)
0068   NO_PERF_REGS := 0
0069   LIBUNWIND_LIBS = -lunwind -lunwind-arm
0070 endif
0071 
0072 ifeq ($(SRCARCH),arm64)
0073   NO_PERF_REGS := 0
0074   CFLAGS += -I$(OUTPUT)arch/arm64/include/generated
0075   LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
0076 endif
0077 
0078 ifeq ($(SRCARCH),riscv)
0079   NO_PERF_REGS := 0
0080 endif
0081 
0082 ifeq ($(SRCARCH),csky)
0083   NO_PERF_REGS := 0
0084 endif
0085 
0086 ifeq ($(ARCH),s390)
0087   NO_PERF_REGS := 0
0088   CFLAGS += -fPIC -I$(OUTPUT)arch/s390/include/generated
0089 endif
0090 
0091 ifeq ($(ARCH),mips)
0092   NO_PERF_REGS := 0
0093   CFLAGS += -I$(OUTPUT)arch/mips/include/generated
0094   LIBUNWIND_LIBS = -lunwind -lunwind-mips
0095 endif
0096 
0097 ifeq ($(NO_PERF_REGS),0)
0098   $(call detected,CONFIG_PERF_REGS)
0099 endif
0100 
0101 # So far there's only x86 and arm libdw unwind support merged in perf.
0102 # Disable it on all other architectures in case libdw unwind
0103 # support is detected in system. Add supported architectures
0104 # to the check.
0105 ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv))
0106   NO_LIBDW_DWARF_UNWIND := 1
0107 endif
0108 
0109 ifeq ($(LIBUNWIND_LIBS),)
0110   NO_LIBUNWIND := 1
0111 endif
0112 #
0113 # For linking with debug library, run like:
0114 #
0115 #   make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
0116 #
0117 
0118 libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code))
0119 define libunwind_arch_set_flags_code
0120   FEATURE_CHECK_CFLAGS-libunwind-$(1)  = -I$(LIBUNWIND_DIR)/include
0121   FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib 
0122 endef
0123 
0124 ifdef LIBUNWIND_DIR
0125   LIBUNWIND_CFLAGS  = -I$(LIBUNWIND_DIR)/include
0126   LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib 
0127   LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64
0128   $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
0129 endif
0130 
0131 # Set per-feature check compilation flags
0132 FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
0133 FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
0134 FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
0135 FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
0136 
0137 FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
0138 FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
0139 FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
0140 FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64
0141 
0142 FEATURE_CHECK_LDFLAGS-libcrypto = -lcrypto
0143 
0144 ifdef CSINCLUDES
0145   LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)
0146 endif
0147 OPENCSDLIBS := -lopencsd_c_api
0148 ifeq ($(findstring -static,${LDFLAGS}),-static)
0149   OPENCSDLIBS += -lopencsd -lstdc++
0150 endif
0151 ifdef CSLIBS
0152   LIBOPENCSD_LDFLAGS := -L$(CSLIBS)
0153 endif
0154 FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
0155 FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)
0156 
0157 ifeq ($(NO_PERF_REGS),0)
0158   CFLAGS += -DHAVE_PERF_REGS_SUPPORT
0159 endif
0160 
0161 # for linking with debug library, run like:
0162 # make DEBUG=1 LIBDW_DIR=/opt/libdw/
0163 ifdef LIBDW_DIR
0164   LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
0165   LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib 
0166 endif
0167 DWARFLIBS := -ldw
0168 ifeq ($(findstring -static,${LDFLAGS}),-static)
0169   DWARFLIBS += -lelf -lebl -ldl -lz -llzma -lbz2
0170 endif
0171 FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
0172 FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS)
0173 
0174 # for linking with debug library, run like:
0175 # make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
0176 ifdef LIBBABELTRACE_DIR
0177   LIBBABELTRACE_CFLAGS  := -I$(LIBBABELTRACE_DIR)/include
0178   LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib 
0179 endif
0180 FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
0181 FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
0182 
0183 ifdef LIBZSTD_DIR
0184   LIBZSTD_CFLAGS  := -I$(LIBZSTD_DIR)/lib
0185   LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
0186 endif
0187 FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
0188 FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)
0189 
0190 FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi 
0191 # include ARCH specific config
0192 -include $(src-perf)/arch/$(SRCARCH)/Makefile
0193 
0194 ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
0195   CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
0196 endif
0197 
0198 include $(srctree)/tools/scripts/utilities.mak
0199 
0200 ifeq ($(call get-executable,$(FLEX)),)
0201   dummy := $(error Error: $(FLEX) is missing on this system, please install it)
0202 endif
0203 
0204 ifeq ($(call get-executable,$(BISON)),)
0205   dummy := $(error Error: $(BISON) is missing on this system, please install it)
0206 endif
0207 
0208 ifneq ($(OUTPUT),)
0209   ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
0210     BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
0211   endif
0212 endif
0213 
0214 # Treat warnings as errors unless directed not to
0215 ifneq ($(WERROR),0)
0216   CORE_CFLAGS += -Werror
0217   CXXFLAGS += -Werror
0218   HOSTCFLAGS += -Werror
0219 endif
0220 
0221 ifndef DEBUG
0222   DEBUG := 0
0223 endif
0224 
0225 ifeq ($(DEBUG),0)
0226 ifeq ($(CC_NO_CLANG), 0)
0227   CORE_CFLAGS += -O3
0228 else
0229   CORE_CFLAGS += -O6
0230 endif
0231 endif
0232 
0233 ifdef PARSER_DEBUG
0234   PARSER_DEBUG_BISON := -t
0235   PARSER_DEBUG_FLEX  := -d
0236   CFLAGS             += -DPARSER_DEBUG
0237   $(call detected_var,PARSER_DEBUG_BISON)
0238   $(call detected_var,PARSER_DEBUG_FLEX)
0239 endif
0240 
0241 # Try different combinations to accommodate systems that only have
0242 # python[2][3]-config in weird combinations in the following order of
0243 # priority from lowest to highest:
0244 #   * python2-config as per pep-0394.
0245 #   * python-config
0246 #   * python3-config
0247 #   * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
0248 #
0249 PYTHON_AUTO := python-config
0250 PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
0251 PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
0252 PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
0253 
0254 # If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
0255 # supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
0256 ifdef PYTHON
0257   ifndef PYTHON_CONFIG
0258     PYTHON_CONFIG_AUTO := $(call get-executable,$(PYTHON)-config)
0259     PYTHON_CONFIG := $(if $(PYTHON_CONFIG_AUTO),$(PYTHON_CONFIG_AUTO),\
0260                           $(call $(error $(PYTHON)-config not found)))
0261   endif
0262 endif
0263 
0264 # Select either auto detected python and python-config or use user supplied values if they are
0265 # defined. get-executable-or-default fails with an error if the first argument is supplied but
0266 # doesn't exist.
0267 override PYTHON_CONFIG := $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO))
0268 override PYTHON := $(call get-executable-or-default,PYTHON,$(subst -config,,$(PYTHON_CONFIG)))
0269 
0270 grep-libs  = $(filter -l%,$(1))
0271 strip-libs  = $(filter-out -l%,$(1))
0272 
0273 PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
0274 
0275 # Python 3.8 changed the output of `python-config --ldflags` to not include the
0276 # '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
0277 # libpython fails if that flag is not included in LDFLAGS
0278 ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
0279   PYTHON_CONFIG_LDFLAGS := --ldflags --embed
0280 else
0281   PYTHON_CONFIG_LDFLAGS := --ldflags
0282 endif
0283 
0284 ifdef PYTHON_CONFIG
0285   PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
0286   PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
0287   PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
0288   PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
0289   FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
0290   ifeq ($(CC_NO_CLANG), 0)
0291     PYTHON_EMBED_CCOPTS := $(filter-out -ffat-lto-objects, $(PYTHON_EMBED_CCOPTS))
0292   endif
0293 endif
0294 
0295 FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
0296 FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
0297 
0298 FEATURE_CHECK_LDFLAGS-libaio = -lrt
0299 
0300 CORE_CFLAGS += -fno-omit-frame-pointer
0301 CORE_CFLAGS += -ggdb3
0302 CORE_CFLAGS += -funwind-tables
0303 CORE_CFLAGS += -Wall
0304 CORE_CFLAGS += -Wextra
0305 CORE_CFLAGS += -std=gnu99
0306 
0307 CXXFLAGS += -std=gnu++14 -fno-exceptions -fno-rtti
0308 CXXFLAGS += -Wall
0309 CXXFLAGS += -fno-omit-frame-pointer
0310 CXXFLAGS += -ggdb3
0311 CXXFLAGS += -funwind-tables
0312 CXXFLAGS += -Wno-strict-aliasing
0313 
0314 HOSTCFLAGS += -Wall
0315 HOSTCFLAGS += -Wextra
0316 
0317 # Enforce a non-executable stack, as we may regress (again) in the future by
0318 # adding assembler files missing the .GNU-stack linker note.
0319 LDFLAGS += -Wl,-z,noexecstack
0320 
0321 EXTLIBS = -lpthread -lrt -lm -ldl
0322 
0323 ifneq ($(TCMALLOC),)
0324   CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
0325   EXTLIBS += -ltcmalloc
0326 endif
0327 
0328 ifeq ($(FEATURES_DUMP),)
0329 # We will display at the end of this Makefile.config, using $(call feature_display_entries),
0330 # as we may retry some feature detection here.
0331   FEATURE_DISPLAY_DEFERRED := 1
0332 include $(srctree)/tools/build/Makefile.feature
0333 else
0334 include $(FEATURES_DUMP)
0335 endif
0336 
0337 ifeq ($(feature-stackprotector-all), 1)
0338   CORE_CFLAGS += -fstack-protector-all
0339 endif
0340 
0341 ifeq ($(DEBUG),0)
0342   ifeq ($(feature-fortify-source), 1)
0343     CORE_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
0344   endif
0345 endif
0346 
0347 INC_FLAGS += -I$(srctree)/tools/lib/perf/include
0348 INC_FLAGS += -I$(src-perf)/util/include 
0349 INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
0350 INC_FLAGS += -I$(srctree)/tools/include/ 
0351 INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
0352 INC_FLAGS += -I$(srctree)/tools/include/uapi
0353 INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
0354 INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/
0355 
0356 # $(obj-perf)      for generated common-cmds.h
0357 # $(obj-perf)/util for generated bison/flex headers
0358 ifneq ($(OUTPUT),)
0359 INC_FLAGS += -I$(obj-perf)/util
0360 INC_FLAGS += -I$(obj-perf)
0361 endif
0362 
0363 INC_FLAGS += -I$(src-perf)/util
0364 INC_FLAGS += -I$(src-perf)
0365 INC_FLAGS += -I$(srctree)/tools/lib/
0366 
0367 CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
0368 
0369 CFLAGS   += $(CORE_CFLAGS) $(INC_FLAGS)
0370 CXXFLAGS += $(INC_FLAGS)
0371 
0372 LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
0373 
0374 ifeq ($(feature-pthread-attr-setaffinity-np), 1)
0375   CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
0376 endif
0377 
0378 ifeq ($(feature-pthread-barrier), 1)
0379   CFLAGS += -DHAVE_PTHREAD_BARRIER
0380 endif
0381 
0382 ifndef NO_BIONIC
0383   $(call feature_check,bionic)
0384   ifeq ($(feature-bionic), 1)
0385     BIONIC := 1
0386     CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
0387     CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
0388     EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
0389     EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
0390   endif
0391 endif
0392 
0393 ifeq ($(feature-eventfd), 1)
0394   CFLAGS += -DHAVE_EVENTFD_SUPPORT
0395 endif
0396 
0397 ifeq ($(feature-get_current_dir_name), 1)
0398   CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
0399 endif
0400 
0401 ifeq ($(feature-gettid), 1)
0402   CFLAGS += -DHAVE_GETTID
0403 endif
0404 
0405 ifeq ($(feature-file-handle), 1)
0406   CFLAGS += -DHAVE_FILE_HANDLE
0407 endif
0408 
0409 ifdef NO_LIBELF
0410   NO_DWARF := 1
0411   NO_DEMANGLE := 1
0412   NO_LIBUNWIND := 1
0413   NO_LIBDW_DWARF_UNWIND := 1
0414   NO_LIBBPF := 1
0415   NO_JVMTI := 1
0416 else
0417   ifeq ($(feature-libelf), 0)
0418     ifeq ($(feature-glibc), 1)
0419       LIBC_SUPPORT := 1
0420     endif
0421     ifeq ($(BIONIC),1)
0422       LIBC_SUPPORT := 1
0423     endif
0424     ifeq ($(LIBC_SUPPORT),1)
0425       msg := $(warning No libelf found. Disables 'probe' tool, jvmti and BPF support in 'perf record'. Please install libelf-dev, libelf-devel or elfutils-libelf-devel);
0426 
0427       NO_LIBELF := 1
0428       NO_DWARF := 1
0429       NO_DEMANGLE := 1
0430       NO_LIBUNWIND := 1
0431       NO_LIBDW_DWARF_UNWIND := 1
0432       NO_LIBBPF := 1
0433       NO_JVMTI := 1
0434     else
0435       ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
0436         ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
0437           msg := $(error No libasan found, please install libasan);
0438         endif
0439       endif
0440 
0441       ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
0442         ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
0443           msg := $(error No libubsan found, please install libubsan);
0444         endif
0445       endif
0446 
0447       ifneq ($(filter s% -static%,$(LDFLAGS),),)
0448         msg := $(error No static glibc found, please install glibc-static);
0449       else
0450         msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
0451       endif
0452     endif
0453   else
0454     ifndef NO_LIBDW_DWARF_UNWIND
0455       ifneq ($(feature-libdw-dwarf-unwind),1)
0456         NO_LIBDW_DWARF_UNWIND := 1
0457         msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
0458       endif
0459     endif
0460     ifneq ($(feature-dwarf), 1)
0461       ifndef NO_DWARF
0462         msg := $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev);
0463         NO_DWARF := 1
0464       endif
0465     else
0466       ifneq ($(feature-dwarf_getlocations), 1)
0467         msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157);
0468       else
0469         CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
0470       endif # dwarf_getlocations
0471     endif # Dwarf support
0472   endif # libelf support
0473 endif # NO_LIBELF
0474 
0475 ifeq ($(feature-glibc), 1)
0476   CFLAGS += -DHAVE_GLIBC_SUPPORT
0477 endif
0478 
0479 ifeq ($(feature-libaio), 1)
0480   ifndef NO_AIO
0481     CFLAGS += -DHAVE_AIO_SUPPORT
0482   endif
0483 endif
0484 
0485 ifdef NO_DWARF
0486   NO_LIBDW_DWARF_UNWIND := 1
0487 endif
0488 
0489 ifeq ($(feature-sched_getcpu), 1)
0490   CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
0491 endif
0492 
0493 ifeq ($(feature-setns), 1)
0494   CFLAGS += -DHAVE_SETNS_SUPPORT
0495   $(call detected,CONFIG_SETNS)
0496 endif
0497 
0498 ifdef CORESIGHT
0499   $(call feature_check,libopencsd)
0500   ifeq ($(feature-libopencsd), 1)
0501     CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
0502     ifeq ($(feature-reallocarray), 0)
0503       CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
0504     endif
0505     LDFLAGS += $(LIBOPENCSD_LDFLAGS)
0506     EXTLIBS += $(OPENCSDLIBS)
0507     $(call detected,CONFIG_LIBOPENCSD)
0508     ifdef CSTRACE_RAW
0509       CFLAGS += -DCS_DEBUG_RAW
0510       ifeq (${CSTRACE_RAW}, packed)
0511         CFLAGS += -DCS_RAW_PACKED
0512       endif
0513     endif
0514   else
0515     dummy := $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
0516   endif
0517 endif
0518 
0519 ifndef NO_LIBELF
0520   CFLAGS += -DHAVE_LIBELF_SUPPORT
0521   EXTLIBS += -lelf
0522   $(call detected,CONFIG_LIBELF)
0523 
0524   ifeq ($(feature-libelf-getphdrnum), 1)
0525     CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
0526   endif
0527 
0528   ifeq ($(feature-libelf-gelf_getnote), 1)
0529     CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
0530   else
0531     msg := $(warning gelf_getnote() not found on libelf, SDT support disabled);
0532   endif
0533 
0534   ifeq ($(feature-libelf-getshdrstrndx), 1)
0535     CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
0536   endif
0537 
0538   ifndef NO_LIBDEBUGINFOD
0539     $(call feature_check,libdebuginfod)
0540     ifeq ($(feature-libdebuginfod), 1)
0541       CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
0542       EXTLIBS += -ldebuginfod
0543     endif
0544   endif
0545 
0546   ifndef NO_DWARF
0547     ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
0548       msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled);
0549       NO_DWARF := 1
0550     else
0551       CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS)
0552       LDFLAGS += $(LIBDW_LDFLAGS)
0553       EXTLIBS += ${DWARFLIBS}
0554       $(call detected,CONFIG_DWARF)
0555     endif # PERF_HAVE_DWARF_REGS
0556   endif # NO_DWARF
0557 
0558   ifndef NO_LIBBPF
0559     ifeq ($(feature-bpf), 1)
0560       CFLAGS += -DHAVE_LIBBPF_SUPPORT
0561       $(call detected,CONFIG_LIBBPF)
0562 
0563       # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
0564       $(call feature_check,libbpf)
0565       ifdef LIBBPF_DYNAMIC
0566         ifeq ($(feature-libbpf), 1)
0567           EXTLIBS += -lbpf
0568           $(call detected,CONFIG_LIBBPF_DYNAMIC)
0569 
0570           $(call feature_check,libbpf-btf__load_from_kernel_by_id)
0571           ifeq ($(feature-libbpf-btf__load_from_kernel_by_id), 1)
0572             CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID
0573           endif
0574           $(call feature_check,libbpf-bpf_prog_load)
0575           ifeq ($(feature-libbpf-bpf_prog_load), 1)
0576             CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD
0577           endif
0578           $(call feature_check,libbpf-bpf_object__next_program)
0579           ifeq ($(feature-libbpf-bpf_object__next_program), 1)
0580             CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM
0581           endif
0582           $(call feature_check,libbpf-bpf_object__next_map)
0583           ifeq ($(feature-libbpf-bpf_object__next_map), 1)
0584             CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_MAP
0585           endif
0586           $(call feature_check,libbpf-btf__raw_data)
0587           ifeq ($(feature-libbpf-btf__raw_data), 1)
0588             CFLAGS += -DHAVE_LIBBPF_BTF__RAW_DATA
0589           endif
0590           $(call feature_check,libbpf-bpf_map_create)
0591           ifeq ($(feature-libbpf-bpf_map_create), 1)
0592             CFLAGS += -DHAVE_LIBBPF_BPF_MAP_CREATE
0593           endif
0594         else
0595           dummy := $(error Error: No libbpf devel library found, please install libbpf-devel);
0596         endif
0597       else
0598         CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID
0599         CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD
0600         CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM
0601         CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_MAP
0602         CFLAGS += -DHAVE_LIBBPF_BTF__RAW_DATA
0603         CFLAGS += -DHAVE_LIBBPF_BPF_MAP_CREATE
0604       endif
0605     endif
0606 
0607     ifndef NO_DWARF
0608       ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
0609         CFLAGS += -DHAVE_BPF_PROLOGUE
0610         $(call detected,CONFIG_BPF_PROLOGUE)
0611       else
0612         msg := $(warning BPF prologue is not supported by architecture $(SRCARCH), missing regs_query_register_offset());
0613       endif
0614     else
0615       msg := $(warning DWARF support is off, BPF prologue is disabled);
0616     endif
0617 
0618   endif # NO_LIBBPF
0619 endif # NO_LIBELF
0620 
0621 ifndef NO_SDT
0622   ifneq ($(feature-sdt), 1)
0623     msg := $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev);
0624     NO_SDT := 1;
0625   else
0626     CFLAGS += -DHAVE_SDT_EVENT
0627     $(call detected,CONFIG_SDT_EVENT)
0628   endif
0629 endif
0630 
0631 ifdef PERF_HAVE_JITDUMP
0632   ifndef NO_LIBELF
0633     $(call detected,CONFIG_JITDUMP)
0634     CFLAGS += -DHAVE_JITDUMP
0635   endif
0636 endif
0637 
0638 ifeq ($(SRCARCH),powerpc)
0639   ifndef NO_DWARF
0640     CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
0641   endif
0642 endif
0643 
0644 ifndef NO_LIBUNWIND
0645   have_libunwind :=
0646 
0647   $(call feature_check,libunwind-x86)
0648   ifeq ($(feature-libunwind-x86), 1)
0649     $(call detected,CONFIG_LIBUNWIND_X86)
0650     CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
0651     LDFLAGS += -lunwind-x86
0652     EXTLIBS_LIBUNWIND += -lunwind-x86
0653     have_libunwind = 1
0654   endif
0655 
0656   $(call feature_check,libunwind-aarch64)
0657   ifeq ($(feature-libunwind-aarch64), 1)
0658     $(call detected,CONFIG_LIBUNWIND_AARCH64)
0659     CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
0660     LDFLAGS += -lunwind-aarch64
0661     EXTLIBS_LIBUNWIND += -lunwind-aarch64
0662     have_libunwind = 1
0663     $(call feature_check,libunwind-debug-frame-aarch64)
0664     ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
0665       msg := $(warning No debug_frame support found in libunwind-aarch64);
0666       CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
0667     endif
0668   endif
0669 
0670   ifneq ($(feature-libunwind), 1)
0671     msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
0672     NO_LOCAL_LIBUNWIND := 1
0673   else
0674     have_libunwind := 1
0675     $(call detected,CONFIG_LOCAL_LIBUNWIND)
0676   endif
0677 
0678   ifneq ($(have_libunwind), 1)
0679     NO_LIBUNWIND := 1
0680   endif
0681 else
0682   NO_LOCAL_LIBUNWIND := 1
0683 endif
0684 
0685 ifndef NO_LIBBPF
0686   ifneq ($(feature-bpf), 1)
0687     msg := $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
0688     NO_LIBBPF := 1
0689   endif
0690 endif
0691 
0692 ifdef BUILD_BPF_SKEL
0693   $(call feature_check,clang-bpf-co-re)
0694   ifeq ($(feature-clang-bpf-co-re), 0)
0695     dummy := $(error Error: clang too old/not installed. Please install recent clang to build with BUILD_BPF_SKEL)
0696   endif
0697   ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
0698     dummy := $(error Error: BPF skeleton support requires libbpf)
0699   endif
0700   $(call detected,CONFIG_PERF_BPF_SKEL)
0701   CFLAGS += -DHAVE_BPF_SKEL
0702 endif
0703 
0704 dwarf-post-unwind := 1
0705 dwarf-post-unwind-text := BUG
0706 
0707 # setup DWARF post unwinder
0708 ifdef NO_LIBUNWIND
0709   ifdef NO_LIBDW_DWARF_UNWIND
0710     msg := $(warning Disabling post unwind, no support found.);
0711     dwarf-post-unwind := 0
0712   else
0713     dwarf-post-unwind-text := libdw
0714     $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
0715   endif
0716 else
0717   dwarf-post-unwind-text := libunwind
0718   $(call detected,CONFIG_LIBUNWIND)
0719   # Enable libunwind support by default.
0720   ifndef NO_LIBDW_DWARF_UNWIND
0721     NO_LIBDW_DWARF_UNWIND := 1
0722   endif
0723 endif
0724 
0725 ifeq ($(dwarf-post-unwind),1)
0726   CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
0727   $(call detected,CONFIG_DWARF_UNWIND)
0728 else
0729   NO_DWARF_UNWIND := 1
0730 endif
0731 
0732 ifndef NO_LOCAL_LIBUNWIND
0733   ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
0734     $(call feature_check,libunwind-debug-frame)
0735     ifneq ($(feature-libunwind-debug-frame), 1)
0736       msg := $(warning No debug_frame support found in libunwind);
0737       CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
0738     endif
0739   else
0740     # non-ARM has no dwarf_find_debug_frame() function:
0741     CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
0742   endif
0743   EXTLIBS += $(LIBUNWIND_LIBS)
0744   LDFLAGS += $(LIBUNWIND_LIBS)
0745 endif
0746 ifeq ($(findstring -static,${LDFLAGS}),-static)
0747   # gcc -static links libgcc_eh which contans piece of libunwind
0748   LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
0749 endif
0750 
0751 ifndef NO_LIBUNWIND
0752   CFLAGS  += -DHAVE_LIBUNWIND_SUPPORT
0753   CFLAGS  += $(LIBUNWIND_CFLAGS)
0754   LDFLAGS += $(LIBUNWIND_LDFLAGS)
0755   EXTLIBS += $(EXTLIBS_LIBUNWIND)
0756 endif
0757 
0758 ifeq ($(NO_SYSCALL_TABLE),0)
0759   $(call detected,CONFIG_TRACE)
0760 else
0761   ifndef NO_LIBAUDIT
0762     $(call feature_check,libaudit)
0763     ifneq ($(feature-libaudit), 1)
0764       msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
0765       NO_LIBAUDIT := 1
0766     else
0767       CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
0768       EXTLIBS += -laudit
0769       $(call detected,CONFIG_TRACE)
0770     endif
0771   endif
0772 endif
0773 
0774 ifndef NO_LIBCRYPTO
0775   ifneq ($(feature-libcrypto), 1)
0776     msg := $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev);
0777     NO_LIBCRYPTO := 1
0778   else
0779     CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
0780     EXTLIBS += -lcrypto
0781     $(call detected,CONFIG_CRYPTO)
0782   endif
0783 endif
0784 
0785 ifdef NO_NEWT
0786   NO_SLANG=1
0787 endif
0788 
0789 ifndef NO_SLANG
0790   ifneq ($(feature-libslang), 1)
0791     ifneq ($(feature-libslang-include-subdir), 1)
0792       msg := $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev);
0793       NO_SLANG := 1
0794     else
0795       CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
0796     endif
0797   endif
0798   ifndef NO_SLANG
0799     # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
0800     CFLAGS += -DHAVE_SLANG_SUPPORT
0801     EXTLIBS += -lslang
0802     $(call detected,CONFIG_SLANG)
0803   endif
0804 endif
0805 
0806 ifdef GTK2
0807   FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
0808   $(call feature_check,gtk2)
0809   ifneq ($(feature-gtk2), 1)
0810     msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
0811     NO_GTK2 := 1
0812   else
0813     $(call feature_check,gtk2-infobar)
0814     ifeq ($(feature-gtk2-infobar), 1)
0815       GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
0816     endif
0817     CFLAGS += -DHAVE_GTK2_SUPPORT
0818     GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
0819     GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
0820     EXTLIBS += -ldl
0821   endif
0822 endif
0823 
0824 ifdef NO_LIBPERL
0825   CFLAGS += -DNO_LIBPERL
0826 else
0827   PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
0828   PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
0829   PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
0830   PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
0831   PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
0832   PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
0833   PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
0834   FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
0835 
0836   ifneq ($(feature-libperl), 1)
0837     CFLAGS += -DNO_LIBPERL
0838     NO_LIBPERL := 1
0839     msg := $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev);
0840   else
0841     LDFLAGS += $(PERL_EMBED_LDFLAGS)
0842     EXTLIBS += $(PERL_EMBED_LIBADD)
0843     CFLAGS += -DHAVE_LIBPERL_SUPPORT
0844     ifeq ($(CC_NO_CLANG), 0)
0845       CFLAGS += -Wno-compound-token-split-by-macro
0846     endif
0847     $(call detected,CONFIG_LIBPERL)
0848   endif
0849 endif
0850 
0851 ifeq ($(feature-timerfd), 1)
0852   CFLAGS += -DHAVE_TIMERFD_SUPPORT
0853 else
0854   msg := $(warning No timerfd support. Disables 'perf kvm stat live');
0855 endif
0856 
0857 disable-python = $(eval $(disable-python_code))
0858 define disable-python_code
0859   CFLAGS += -DNO_LIBPYTHON
0860   $(warning $1)
0861   NO_LIBPYTHON := 1
0862 endef
0863 
0864 ifdef NO_LIBPYTHON
0865   $(call disable-python,Python support disabled by user)
0866 else
0867 
0868   ifndef PYTHON
0869     $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
0870   else
0871     PYTHON_WORD := $(call shell-wordify,$(PYTHON))
0872 
0873     ifndef PYTHON_CONFIG
0874       $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
0875     else
0876 
0877       ifneq ($(feature-libpython), 1)
0878         $(call disable-python,No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev)
0879       else
0880          LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
0881          EXTLIBS += $(PYTHON_EMBED_LIBADD)
0882          LANG_BINDINGS += $(obj-perf)python/perf.so
0883          CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
0884          $(call detected,CONFIG_LIBPYTHON)
0885       endif
0886     endif
0887   endif
0888 endif
0889 
0890 ifneq ($(NO_JEVENTS),1)
0891   ifeq ($(wildcard pmu-events/arch/$(SRCARCH)/mapfile.csv),)
0892     NO_JEVENTS := 1
0893   endif
0894 endif
0895 ifneq ($(NO_JEVENTS),1)
0896   NO_JEVENTS := 0
0897   ifndef PYTHON
0898     $(warning No python interpreter disabling jevent generation)
0899     NO_JEVENTS := 1
0900   else
0901     # jevents.py uses f-strings present in Python 3.6 released in Dec. 2016.
0902     JEVENTS_PYTHON_GOOD := $(shell $(PYTHON) -c 'import sys;print("1" if(sys.version_info.major >= 3 and sys.version_info.minor >= 6) else "0")' 2> /dev/null)
0903     ifneq ($(JEVENTS_PYTHON_GOOD), 1)
0904       $(warning Python interpreter too old (older than 3.6) disabling jevent generation)
0905       NO_JEVENTS := 1
0906     endif
0907   endif
0908 endif
0909 
0910 ifndef NO_LIBBFD
0911   ifeq ($(feature-libbfd), 1)
0912     EXTLIBS += -lbfd -lopcodes
0913   else
0914     # we are on a system that requires -liberty and (maybe) -lz
0915     # to link against -lbfd; test each case individually here
0916 
0917     # call all detections now so we get correct
0918     # status in VF output
0919     $(call feature_check,libbfd-liberty)
0920     $(call feature_check,libbfd-liberty-z)
0921 
0922     ifeq ($(feature-libbfd-liberty), 1)
0923       EXTLIBS += -lbfd -lopcodes -liberty
0924     else
0925       ifeq ($(feature-libbfd-liberty-z), 1)
0926         EXTLIBS += -lbfd -lopcodes -liberty -lz
0927       endif
0928     endif
0929     $(call feature_check,disassembler-four-args)
0930     $(call feature_check,disassembler-init-styled)
0931   endif
0932 
0933   ifeq ($(feature-libbfd-buildid), 1)
0934     CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
0935   else
0936     msg := $(warning Old version of libbfd/binutils things like PE executable profiling will not be available);
0937   endif
0938 endif
0939 
0940 ifdef NO_DEMANGLE
0941   CFLAGS += -DNO_DEMANGLE
0942 else
0943   ifdef HAVE_CPLUS_DEMANGLE_SUPPORT
0944     EXTLIBS += -liberty
0945   else
0946     ifeq ($(filter -liberty,$(EXTLIBS)),)
0947       $(call feature_check,cplus-demangle)
0948 
0949       # we dont have neither HAVE_CPLUS_DEMANGLE_SUPPORT
0950       # or any of 'bfd iberty z' trinity
0951       ifeq ($(feature-cplus-demangle), 1)
0952         EXTLIBS += -liberty
0953       else
0954         msg := $(warning No bfd.h/libbfd found, please install binutils-dev[el]/zlib-static/libiberty-dev to gain symbol demangling)
0955         CFLAGS += -DNO_DEMANGLE
0956       endif
0957     endif
0958   endif
0959 
0960   ifneq ($(filter -liberty,$(EXTLIBS)),)
0961     CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
0962   endif
0963 endif
0964 
0965 ifneq ($(filter -lbfd,$(EXTLIBS)),)
0966   CFLAGS += -DHAVE_LIBBFD_SUPPORT
0967 endif
0968 
0969 ifndef NO_ZLIB
0970   ifeq ($(feature-zlib), 1)
0971     CFLAGS += -DHAVE_ZLIB_SUPPORT
0972     EXTLIBS += -lz
0973     $(call detected,CONFIG_ZLIB)
0974   else
0975     NO_ZLIB := 1
0976   endif
0977 endif
0978 
0979 ifndef NO_LZMA
0980   ifeq ($(feature-lzma), 1)
0981     CFLAGS += -DHAVE_LZMA_SUPPORT
0982     EXTLIBS += -llzma
0983     $(call detected,CONFIG_LZMA)
0984   else
0985     msg := $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev);
0986     NO_LZMA := 1
0987   endif
0988 endif
0989 
0990 ifndef NO_LIBZSTD
0991   ifeq ($(feature-libzstd), 1)
0992     CFLAGS += -DHAVE_ZSTD_SUPPORT
0993     CFLAGS += $(LIBZSTD_CFLAGS)
0994     LDFLAGS += $(LIBZSTD_LDFLAGS)
0995     EXTLIBS += -lzstd
0996     $(call detected,CONFIG_ZSTD)
0997   else
0998     msg := $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR);
0999     NO_LIBZSTD := 1
1000   endif
1001 endif
1002 
1003 ifndef NO_LIBCAP
1004   ifeq ($(feature-libcap), 1)
1005     CFLAGS += -DHAVE_LIBCAP_SUPPORT
1006     EXTLIBS += -lcap
1007     $(call detected,CONFIG_LIBCAP)
1008   else
1009     msg := $(warning No libcap found, disables capability support, please install libcap-devel/libcap-dev);
1010     NO_LIBCAP := 1
1011   endif
1012 endif
1013 
1014 ifndef NO_BACKTRACE
1015   ifeq ($(feature-backtrace), 1)
1016     CFLAGS += -DHAVE_BACKTRACE_SUPPORT
1017   endif
1018 endif
1019 
1020 ifndef NO_LIBNUMA
1021   ifeq ($(feature-libnuma), 0)
1022     msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev);
1023     NO_LIBNUMA := 1
1024   else
1025     ifeq ($(feature-numa_num_possible_cpus), 0)
1026       msg := $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8);
1027       NO_LIBNUMA := 1
1028     else
1029       CFLAGS += -DHAVE_LIBNUMA_SUPPORT
1030       EXTLIBS += -lnuma
1031       $(call detected,CONFIG_NUMA)
1032     endif
1033   endif
1034 endif
1035 
1036 ifdef HAVE_KVM_STAT_SUPPORT
1037     CFLAGS += -DHAVE_KVM_STAT_SUPPORT
1038 endif
1039 
1040 ifeq ($(feature-disassembler-four-args), 1)
1041     CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
1042 endif
1043 
1044 ifeq ($(feature-disassembler-init-styled), 1)
1045     CFLAGS += -DDISASM_INIT_STYLED
1046 endif
1047 
1048 ifeq (${IS_64_BIT}, 1)
1049   ifndef NO_PERF_READ_VDSO32
1050     $(call feature_check,compile-32)
1051     ifeq ($(feature-compile-32), 1)
1052       CFLAGS += -DHAVE_PERF_READ_VDSO32
1053     else
1054       NO_PERF_READ_VDSO32 := 1
1055     endif
1056   endif
1057   ifneq ($(SRCARCH), x86)
1058     NO_PERF_READ_VDSOX32 := 1
1059   endif
1060   ifndef NO_PERF_READ_VDSOX32
1061     $(call feature_check,compile-x32)
1062     ifeq ($(feature-compile-x32), 1)
1063       CFLAGS += -DHAVE_PERF_READ_VDSOX32
1064     else
1065       NO_PERF_READ_VDSOX32 := 1
1066     endif
1067   endif
1068 else
1069   NO_PERF_READ_VDSO32 := 1
1070   NO_PERF_READ_VDSOX32 := 1
1071 endif
1072 
1073 ifndef NO_LIBBABELTRACE
1074   $(call feature_check,libbabeltrace)
1075   ifeq ($(feature-libbabeltrace), 1)
1076     CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
1077     LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
1078     EXTLIBS += -lbabeltrace-ctf
1079     $(call detected,CONFIG_LIBBABELTRACE)
1080   else
1081     msg := $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev);
1082   endif
1083 endif
1084 
1085 ifndef NO_AUXTRACE
1086   ifeq ($(SRCARCH),x86)
1087     ifeq ($(feature-get_cpuid), 0)
1088       msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
1089       NO_AUXTRACE := 1
1090     endif
1091   endif
1092   ifndef NO_AUXTRACE
1093     $(call detected,CONFIG_AUXTRACE)
1094     CFLAGS += -DHAVE_AUXTRACE_SUPPORT
1095     ifeq ($(feature-reallocarray), 0)
1096       CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
1097     endif
1098   endif
1099 endif
1100 
1101 ifndef NO_JVMTI
1102   ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
1103     JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
1104   else
1105     ifneq (,$(wildcard /usr/sbin/alternatives))
1106       JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
1107     endif
1108   endif
1109   ifndef JDIR
1110     $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
1111     NO_JVMTI := 1
1112   endif
1113 endif
1114 
1115 ifndef NO_JVMTI
1116   FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
1117   $(call feature_check,jvmti)
1118   ifeq ($(feature-jvmti), 1)
1119     $(call detected_var,JDIR)
1120     ifndef NO_JVMTI_CMLR
1121       FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
1122       $(call feature_check,jvmti-cmlr)
1123       ifeq ($(feature-jvmti-cmlr), 1)
1124         CFLAGS += -DHAVE_JVMTI_CMLR
1125       endif
1126     endif # NO_JVMTI_CMLR
1127   else
1128     $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel)
1129     NO_JVMTI := 1
1130   endif
1131 endif
1132 
1133 USE_CXX = 0
1134 USE_CLANGLLVM = 0
1135 ifdef LIBCLANGLLVM
1136   $(call feature_check,cxx)
1137   ifneq ($(feature-cxx), 1)
1138     msg := $(warning No g++ found, disable clang and llvm support. Please install g++)
1139   else
1140     $(call feature_check,llvm)
1141     $(call feature_check,llvm-version)
1142     ifneq ($(feature-llvm), 1)
1143       msg := $(warning No suitable libLLVM found, disabling builtin clang and LLVM support. Please install llvm-dev(el) (>= 3.9.0))
1144     else
1145       $(call feature_check,clang)
1146       ifneq ($(feature-clang), 1)
1147         msg := $(warning No suitable libclang found, disabling builtin clang and LLVM support. Please install libclang-dev(el) (>= 3.9.0))
1148       else
1149         CFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT
1150         CXXFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT -I$(shell $(LLVM_CONFIG) --includedir)
1151         $(call detected,CONFIG_CXX)
1152         $(call detected,CONFIG_CLANGLLVM)
1153         USE_CXX = 1
1154         USE_LLVM = 1
1155         USE_CLANG = 1
1156         ifneq ($(feature-llvm-version),1)
1157           msg := $(warning This version of LLVM is not tested. May cause build errors)
1158         endif
1159       endif
1160     endif
1161   endif
1162 endif
1163 
1164 ifdef LIBPFM4
1165   $(call feature_check,libpfm4)
1166   ifeq ($(feature-libpfm4), 1)
1167     CFLAGS += -DHAVE_LIBPFM
1168     EXTLIBS += -lpfm
1169     ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
1170     $(call detected,CONFIG_LIBPFM4)
1171   else
1172     msg := $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev);
1173     NO_LIBPFM4 := 1
1174   endif
1175 endif
1176 
1177 ifdef LIBTRACEEVENT_DYNAMIC
1178   $(call feature_check,libtraceevent)
1179   ifeq ($(feature-libtraceevent), 1)
1180     EXTLIBS += -ltraceevent
1181     LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent)
1182     LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1183     LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1184     LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1185     LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
1186     CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
1187   else
1188     dummy := $(error Error: No libtraceevent devel library found, please install libtraceevent-devel);
1189   endif
1190 endif
1191 
1192 ifdef LIBTRACEFS_DYNAMIC
1193   $(call feature_check,libtracefs)
1194   ifeq ($(feature-libtracefs), 1)
1195     EXTLIBS += -ltracefs
1196     LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs)
1197     LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
1198     LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
1199     LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
1200     LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
1201     CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
1202   else
1203     dummy := $(error Error: No libtracefs devel library found, please install libtracefs-dev);
1204   endif
1205 endif
1206 
1207 # Among the variables below, these:
1208 #   perfexecdir
1209 #   perf_include_dir
1210 #   perf_examples_dir
1211 #   template_dir
1212 #   mandir
1213 #   infodir
1214 #   htmldir
1215 #   ETC_PERFCONFIG (but not sysconfdir)
1216 # can be specified as a relative path some/where/else;
1217 # this is interpreted as relative to $(prefix) and "perf" at
1218 # runtime figures out where they are based on the path to the executable.
1219 # This can help installing the suite in a relocatable way.
1220 
1221 # Make the path relative to DESTDIR, not to prefix
1222 ifndef DESTDIR
1223 prefix ?= $(HOME)
1224 endif
1225 bindir_relative = bin
1226 bindir = $(abspath $(prefix)/$(bindir_relative))
1227 includedir_relative = include
1228 includedir = $(abspath $(prefix)/$(includedir_relative)) 
1229 mandir = share/man
1230 infodir = share/info
1231 perfexecdir = libexec/perf-core
1232 perf_include_dir = lib/perf/include
1233 perf_examples_dir = lib/perf/examples 
1234 sharedir = $(prefix)/share
1235 template_dir = share/perf-core/templates
1236 STRACE_GROUPS_DIR = share/perf-core/strace/groups
1237 htmldir = share/doc/perf-doc
1238 tipdir = share/doc/perf-tip
1239 srcdir = $(srctree)/tools/perf
1240 ifeq ($(prefix),/usr)
1241 sysconfdir = /etc
1242 ETC_PERFCONFIG = $(sysconfdir)/perfconfig
1243 else
1244 sysconfdir = $(prefix)/etc
1245 ETC_PERFCONFIG = etc/perfconfig
1246 endif
1247 ifndef lib
1248 ifeq ($(SRCARCH)$(IS_64_BIT), x861)
1249 lib = lib64
1250 else
1251 lib = lib
1252 endif
1253 endif # lib
1254 libdir = $(prefix)/$(lib)
1255 
1256 # Shell quote (do not use $(call) to accommodate ancient setups);
1257 ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
1258 STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
1259 DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
1260 bindir_SQ = $(subst ','\'',$(bindir))
1261 includedir_SQ = $(subst ','\'',$(includedir))
1262 mandir_SQ = $(subst ','\'',$(mandir))
1263 infodir_SQ = $(subst ','\'',$(infodir))
1264 perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
1265 perf_include_dir_SQ = $(subst ','\'',$(perf_include_dir))
1266 perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
1267 template_dir_SQ = $(subst ','\'',$(template_dir))
1268 htmldir_SQ = $(subst ','\'',$(htmldir))
1269 tipdir_SQ = $(subst ','\'',$(tipdir))
1270 prefix_SQ = $(subst ','\'',$(prefix))
1271 sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
1272 libdir_SQ = $(subst ','\'',$(libdir))
1273 srcdir_SQ = $(subst ','\'',$(srcdir))
1274 
1275 ifneq ($(filter /%,$(firstword $(perfexecdir))),)
1276 perfexec_instdir = $(perfexecdir)
1277 perf_include_instdir = $(perf_include_dir)
1278 perf_examples_instdir = $(perf_examples_dir)
1279 STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
1280 tip_instdir = $(tipdir)
1281 else
1282 perfexec_instdir = $(prefix)/$(perfexecdir)
1283 perf_include_instdir = $(prefix)/$(perf_include_dir)
1284 perf_examples_instdir = $(prefix)/$(perf_examples_dir)
1285 STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
1286 tip_instdir = $(prefix)/$(tipdir)
1287 endif
1288 perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
1289 perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
1290 perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
1291 STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
1292 tip_instdir_SQ = $(subst ','\'',$(tip_instdir))
1293 
1294 # If we install to $(HOME) we keep the traceevent default:
1295 # $(HOME)/.traceevent/plugins
1296 # Otherwise we install plugins into the global $(libdir).
1297 ifdef DESTDIR
1298 plugindir=$(libdir)/traceevent/plugins
1299 plugindir_SQ= $(subst ','\'',$(plugindir))
1300 endif
1301 
1302 print_var = $(eval $(print_var_code)) $(info $(MSG))
1303 define print_var_code
1304     MSG = $(shell printf '...%30s: %s' $(1) $($(1)))
1305 endef
1306 
1307 ifeq ($(VF),1)
1308   # Display EXTRA features which are detected manualy
1309   # from here with feature_check call and thus cannot
1310   # be partof global state output.
1311   $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),))
1312   $(call print_var,prefix)
1313   $(call print_var,bindir)
1314   $(call print_var,libdir)
1315   $(call print_var,sysconfdir)
1316   $(call print_var,LIBUNWIND_DIR)
1317   $(call print_var,LIBDW_DIR)
1318   $(call print_var,JDIR)
1319 
1320   ifeq ($(dwarf-post-unwind),1)
1321     $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text))
1322   endif
1323   $(info )
1324 endif
1325 
1326 $(call detected_var,bindir_SQ)
1327 $(call detected_var,PYTHON_WORD)
1328 ifneq ($(OUTPUT),)
1329 $(call detected_var,OUTPUT)
1330 endif
1331 $(call detected_var,htmldir_SQ)
1332 $(call detected_var,infodir_SQ)
1333 $(call detected_var,mandir_SQ)
1334 $(call detected_var,ETC_PERFCONFIG_SQ)
1335 $(call detected_var,STRACE_GROUPS_DIR_SQ)
1336 $(call detected_var,prefix_SQ)
1337 $(call detected_var,perfexecdir_SQ)
1338 $(call detected_var,perf_include_dir_SQ)
1339 $(call detected_var,perf_examples_dir_SQ)
1340 $(call detected_var,tipdir_SQ)
1341 $(call detected_var,srcdir_SQ)
1342 $(call detected_var,LIBDIR)
1343 $(call detected_var,GTK_CFLAGS)
1344 $(call detected_var,PERL_EMBED_CCOPTS)
1345 $(call detected_var,PYTHON_EMBED_CCOPTS)
1346 ifneq ($(BISON_FILE_PREFIX_MAP),)
1347 $(call detected_var,BISON_FILE_PREFIX_MAP)
1348 endif
1349 
1350 # re-generate FEATURE-DUMP as we may have called feature_check, found out
1351 # extra libraries to add to LDFLAGS of some other test and then redo those
1352 # tests.
1353 $(shell rm -f $(FEATURE_DUMP_FILENAME))
1354 $(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))
1355 
1356 ifeq ($(feature_display),1)
1357   $(call feature_display_entries)
1358 endif
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