Makefile.config

   1# SPDX-License-Identifier: GPL-2.0-only
   2
   3ifeq ($(src-perf),)
   4src-perf := $(srctree)/tools/perf
   5endif
   6
   7ifeq ($(obj-perf),)
   8obj-perf := $(OUTPUT)
   9endif
  10
  11ifneq ($(obj-perf),)
  12obj-perf := $(abspath $(obj-perf))/
  13endif
  14
  15$(shell printf "" > $(OUTPUT).config-detected)
  16detected     = $(shell echo "$(1)=y"       >> $(OUTPUT).config-detected)
  17detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)
  18
  19CFLAGS := $(EXTRA_CFLAGS) $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
  20HOSTCFLAGS := $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
  21
  22# This is required because the kernel is built with this and some of the code
  23# borrowed from kernel headers depends on it, e.g. put_unaligned_*().
  24CFLAGS += -fno-strict-aliasing
  25
  26# Set target flag and options when using clang as compiler.
  27ifeq ($(CC_NO_CLANG), 0)
  28  CLANG_TARGET_FLAGS_arm	:= arm-linux-gnueabi
  29  CLANG_TARGET_FLAGS_arm64	:= aarch64-linux-gnu
  30  CLANG_TARGET_FLAGS_m68k	:= m68k-linux-gnu
  31  CLANG_TARGET_FLAGS_mips	:= mipsel-linux-gnu
  32  CLANG_TARGET_FLAGS_powerpc	:= powerpc64le-linux-gnu
  33  CLANG_TARGET_FLAGS_riscv	:= riscv64-linux-gnu
  34  CLANG_TARGET_FLAGS_s390	:= s390x-linux-gnu
  35  CLANG_TARGET_FLAGS_x86	:= x86_64-linux-gnu
  36  CLANG_TARGET_FLAGS_x86_64	:= x86_64-linux-gnu
  37
  38  # Default to host architecture if ARCH is not explicitly given.
  39  ifeq ($(ARCH), $(HOSTARCH))
  40    CLANG_TARGET_FLAGS := $(shell $(CLANG) -print-target-triple)
  41  else
  42    CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH))
  43  endif
  44
  45  ifeq ($(CROSS_COMPILE),)
  46    ifeq ($(CLANG_TARGET_FLAGS),)
  47      $(error Specify CROSS_COMPILE or add CLANG_TARGET_FLAGS for $(ARCH))
  48    else
  49      CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS)
  50    endif # CLANG_TARGET_FLAGS
  51  else
  52    CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
  53  endif # CROSS_COMPILE
  54
  55  CC := $(CLANG) $(CLANG_FLAGS) -fintegrated-as
  56  CXX := $(CXX) $(CLANG_FLAGS) -fintegrated-as
  57
  58  # Enabled Wthread-safety analysis for clang builds.
  59  CFLAGS += -Wthread-safety
  60endif
  61
  62include $(srctree)/tools/scripts/Makefile.arch
  63
  64$(call detected_var,SRCARCH)
  65
  66CFLAGS += -I$(OUTPUT)arch/$(SRCARCH)/include/generated
  67CFLAGS += -I$(OUTPUT)libperf/arch/$(SRCARCH)/include/generated/uapi
  68
  69# Additional ARCH settings for ppc
  70ifeq ($(SRCARCH),powerpc)
  71  ifndef NO_LIBUNWIND
  72    LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
  73  endif
  74endif
  75
  76# Additional ARCH settings for x86
  77ifeq ($(SRCARCH),x86)
  78  $(call detected,CONFIG_X86)
  79  ifeq (${IS_64_BIT}, 1)
  80    CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT
  81    ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
  82    ifndef NO_LIBUNWIND
  83      LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
  84    endif
  85    $(call detected,CONFIG_X86_64)
  86  else
  87    ifndef NO_LIBUNWIND
  88      LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
  89    endif
  90  endif
  91endif
  92
  93ifeq ($(SRCARCH),arm)
  94  ifndef NO_LIBUNWIND
  95    LIBUNWIND_LIBS = -lunwind -lunwind-arm
  96  endif
  97endif
  98
  99ifeq ($(SRCARCH),arm64)
 100  ifndef NO_LIBUNWIND
 101    LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
 102  endif
 103endif
 104
 105ifeq ($(SRCARCH),loongarch)
 106  ifndef NO_LIBUNWIND
 107    LIBUNWIND_LIBS = -lunwind -lunwind-loongarch64
 108  endif
 109endif
 110
 111ifeq ($(ARCH),s390)
 112  CFLAGS += -fPIC
 113endif
 114
 115ifeq ($(ARCH),mips)
 116  ifndef NO_LIBUNWIND
 117    LIBUNWIND_LIBS = -lunwind -lunwind-mips
 118  endif
 119endif
 120
 121# So far there's only x86 and arm libdw unwind support merged in perf.
 122# Disable it on all other architectures in case libdw unwind
 123# support is detected in system. Add supported architectures
 124# to the check.
 125ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv loongarch))
 126  NO_LIBDW_DWARF_UNWIND := 1
 127endif
 128
 129ifneq ($(LIBUNWIND),1)
 130  NO_LIBUNWIND := 1
 131endif
 132
 133ifeq ($(LIBUNWIND_LIBS),)
 134  NO_LIBUNWIND := 1
 135endif
 136#
 137# For linking with debug library, run like:
 138#
 139#   make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
 140#
 141
 142libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code))
 143define libunwind_arch_set_flags_code
 144  FEATURE_CHECK_CFLAGS-libunwind-$(1)  = -I$(LIBUNWIND_DIR)/include
 145  FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib
 146endef
 147
 148ifdef LIBUNWIND_DIR
 149  LIBUNWIND_CFLAGS  = -I$(LIBUNWIND_DIR)/include
 150  LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib
 151  LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64 loongarch
 152  $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
 153endif
 154
 155ifndef NO_LIBUNWIND
 156  # Set per-feature check compilation flags
 157  FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
 158  FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
 159  FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
 160  FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
 161  
 162  FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
 163  FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
 164  FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
 165  FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64
 166endif
 167
 168ifdef CSINCLUDES
 169  LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)
 170endif
 171OPENCSDLIBS := -lopencsd_c_api -lopencsd
 172ifeq ($(findstring -static,${LDFLAGS}),-static)
 173  OPENCSDLIBS += -lstdc++
 174endif
 175ifdef CSLIBS
 176  LIBOPENCSD_LDFLAGS := -L$(CSLIBS)
 177endif
 178FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
 179FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)
 180
 181# for linking with debug library, run like:
 182# make DEBUG=1 LIBDW_DIR=/opt/libdw/
 183ifdef LIBDW_DIR
 184  LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
 185  LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
 186endif
 187DWARFLIBS := -ldw
 188ifeq ($(findstring -static,${LDFLAGS}),-static)
 189  DWARFLIBS += -lelf -lz -llzma -lbz2
 190
 191  LIBDW_VERSION := $(shell $(PKG_CONFIG) --modversion libdw).0.0
 192  LIBDW_VERSION_1 := $(word 1, $(subst ., ,$(LIBDW_VERSION)))
 193  LIBDW_VERSION_2 := $(word 2, $(subst ., ,$(LIBDW_VERSION)))
 194
 195  # Elfutils merged libebl.a into libdw.a starting from version 0.177,
 196  # Link libebl.a only if libdw is older than this version.
 197  ifeq ($(shell test $(LIBDW_VERSION_2) -lt 177; echo $$?),0)
 198    DWARFLIBS += -lebl
 199  endif
 200
 201  # Must put -ldl after -lebl for dependency
 202  DWARFLIBS += -ldl
 203endif
 204FEATURE_CHECK_CFLAGS-libdw := $(LIBDW_CFLAGS)
 205FEATURE_CHECK_LDFLAGS-libdw := $(LIBDW_LDFLAGS) $(DWARFLIBS)
 206
 207# for linking with debug library, run like:
 208# make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
 209ifdef LIBBABELTRACE_DIR
 210  LIBBABELTRACE_CFLAGS  := -I$(LIBBABELTRACE_DIR)/include
 211  LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib
 212endif
 213FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
 214FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
 215
 216# for linking with debug library, run like:
 217# make DEBUG=1 LIBCAPSTONE_DIR=/opt/capstone/
 218ifdef LIBCAPSTONE_DIR
 219  LIBCAPSTONE_CFLAGS  := -I$(LIBCAPSTONE_DIR)/include
 220  LIBCAPSTONE_LDFLAGS := -L$(LIBCAPSTONE_DIR)/
 221endif
 222FEATURE_CHECK_CFLAGS-libcapstone := $(LIBCAPSTONE_CFLAGS)
 223FEATURE_CHECK_LDFLAGS-libcapstone := $(LIBCAPSTONE_LDFLAGS) -lcapstone
 224
 225ifdef LIBZSTD_DIR
 226  LIBZSTD_CFLAGS  := -I$(LIBZSTD_DIR)/lib
 227  LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
 228endif
 229FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
 230FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)
 231
 232# for linking with debug library, run like:
 233# make DEBUG=1 PKG_CONFIG_PATH=/opt/libtraceevent/(lib|lib64)/pkgconfig
 234
 235ifneq ($(NO_LIBTRACEEVENT),1)
 236  ifeq ($(call get-executable,$(PKG_CONFIG)),)
 237    $(error Error: $(PKG_CONFIG) needed by libtraceevent is missing on this system, please install it)
 238  endif
 239endif
 240
 241FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi
 242# include ARCH specific config
 243-include $(src-perf)/arch/$(SRCARCH)/Makefile
 244
 245include $(srctree)/tools/scripts/utilities.mak
 246
 247ifeq ($(call get-executable,$(FLEX)),)
 248  $(error Error: $(FLEX) is missing on this system, please install it)
 249endif
 250
 251ifeq ($(call get-executable,$(BISON)),)
 252  $(error Error: $(BISON) is missing on this system, please install it)
 253endif
 254
 255ifneq ($(OUTPUT),)
 256  ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)
 257    BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=
 258  endif
 259endif
 260
 261# Treat warnings as errors unless directed not to
 262ifneq ($(WERROR),0)
 263  CORE_CFLAGS += -Werror
 264  CXXFLAGS += -Werror
 265  HOSTCFLAGS += -Werror
 266endif
 267
 268ifndef DEBUG
 269  DEBUG := 0
 270endif
 271
 272ifeq ($(DEBUG),0)
 273CORE_CFLAGS += -DNDEBUG=1
 274CORE_CFLAGS += -O3
 275else
 276  CORE_CFLAGS += -g
 277  CXXFLAGS += -g
 278endif
 279
 280ifdef PARSER_DEBUG
 281  PARSER_DEBUG_BISON := -t
 282  PARSER_DEBUG_FLEX  := -d
 283  CFLAGS             += -DPARSER_DEBUG
 284  $(call detected_var,PARSER_DEBUG_BISON)
 285  $(call detected_var,PARSER_DEBUG_FLEX)
 286endif
 287
 288ifdef LTO
 289  CORE_CFLAGS += -flto
 290  CXXFLAGS += -flto
 291endif
 292
 293# Try different combinations to accommodate systems that only have
 294# python[2][3]-config in weird combinations in the following order of
 295# priority from lowest to highest:
 296#   * python2-config as per pep-0394.
 297#   * python-config
 298#   * python3-config
 299#   * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
 300#
 301PYTHON_AUTO := python-config
 302PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
 303PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
 304PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
 305
 306# If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
 307# supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
 308ifdef PYTHON
 309  ifndef PYTHON_CONFIG
 310    PYTHON_CONFIG_AUTO := $(call get-executable,$(PYTHON)-config)
 311    PYTHON_CONFIG := $(if $(PYTHON_CONFIG_AUTO),$(PYTHON_CONFIG_AUTO),\
 312                          $(call $(error $(PYTHON)-config not found)))
 313  endif
 314endif
 315
 316# Select either auto detected python and python-config or use user supplied values if they are
 317# defined. get-executable-or-default fails with an error if the first argument is supplied but
 318# doesn't exist.
 319override PYTHON_CONFIG := $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO))
 320override PYTHON := $(call get-executable-or-default,PYTHON,$(subst -config,,$(PYTHON_CONFIG)))
 321
 322grep-libs  = $(filter -l%,$(1))
 323strip-libs  = $(filter-out -l%,$(1))
 324
 325PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
 326
 327# Python 3.8 changed the output of `python-config --ldflags` to not include the
 328# '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
 329# libpython fails if that flag is not included in LDFLAGS
 330ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
 331  PYTHON_CONFIG_LDFLAGS := --ldflags --embed
 332else
 333  PYTHON_CONFIG_LDFLAGS := --ldflags
 334endif
 335
 336ifdef PYTHON_CONFIG
 337  PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
 338  # Update the python flags for cross compilation
 339  ifdef CROSS_COMPILE
 340    PYTHON_NATIVE := $(shell echo $(PYTHON_EMBED_LDOPTS) | sed 's/\(-L.*\/\)\(.*-linux-gnu\).*/\2/')
 341    PYTHON_EMBED_LDOPTS := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EMBED_LDOPTS))
 342  endif
 343  PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
 344  PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
 345  PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
 346  FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
 347  ifeq ($(CC_NO_CLANG), 0)
 348    PYTHON_EMBED_CCOPTS := $(filter-out -ffat-lto-objects, $(PYTHON_EMBED_CCOPTS))
 349  endif
 350endif
 351
 352FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
 353FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
 354
 355FEATURE_CHECK_LDFLAGS-libaio = -lrt
 356
 357CORE_CFLAGS += -fno-omit-frame-pointer
 358CORE_CFLAGS += -Wall
 359CORE_CFLAGS += -Wextra
 360CORE_CFLAGS += -std=gnu11
 361
 362CXXFLAGS += -std=gnu++17 -fno-exceptions -fno-rtti
 363CXXFLAGS += -Wall
 364CXXFLAGS += -Wextra
 365CXXFLAGS += -fno-omit-frame-pointer
 366
 367HOSTCFLAGS += -Wall
 368HOSTCFLAGS += -Wextra
 369
 370# Enforce a non-executable stack, as we may regress (again) in the future by
 371# adding assembler files missing the .GNU-stack linker note.
 372LDFLAGS += -Wl,-z,noexecstack
 373
 374EXTLIBS = -lpthread -lrt -lm -ldl
 375
 376ifneq ($(TCMALLOC),)
 377  CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
 378  EXTLIBS += -ltcmalloc
 379endif
 380
 381ifeq ($(FEATURES_DUMP),)
 382# We will display at the end of this Makefile.config, using $(call feature_display_entries)
 383# As we may retry some feature detection here, see the disassembler-four-args case, for instance
 384  FEATURE_DISPLAY_DEFERRED := 1
 385include $(srctree)/tools/build/Makefile.feature
 386else
 387include $(FEATURES_DUMP)
 388endif
 389
 390ifeq ($(feature-stackprotector-all), 1)
 391  CORE_CFLAGS += -fstack-protector-all
 392endif
 393
 394ifeq ($(DEBUG),0)
 395  ifeq ($(feature-fortify-source), 1)
 396    CORE_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
 397  endif
 398endif
 399
 400INC_FLAGS += -I$(src-perf)/util/include
 401INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
 402INC_FLAGS += -I$(srctree)/tools/include/
 403INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
 404INC_FLAGS += -I$(srctree)/tools/include/uapi
 405INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
 406INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/
 407
 408# $(obj-perf)      for generated common-cmds.h
 409# $(obj-perf)/util for generated bison/flex headers
 410ifneq ($(OUTPUT),)
 411INC_FLAGS += -I$(obj-perf)/util
 412INC_FLAGS += -I$(obj-perf)
 413endif
 414
 415INC_FLAGS += -I$(src-perf)/util
 416INC_FLAGS += -I$(src-perf)
 417
 418CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
 419
 420CFLAGS   += $(CORE_CFLAGS) $(INC_FLAGS)
 421CXXFLAGS += $(INC_FLAGS)
 422
 423LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
 424
 425ifeq ($(feature-pthread-attr-setaffinity-np), 1)
 426  CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
 427endif
 428
 429ifeq ($(feature-pthread-barrier), 1)
 430  CFLAGS += -DHAVE_PTHREAD_BARRIER
 431endif
 432
 433ifndef NO_BIONIC
 434  $(call feature_check,bionic)
 435  ifeq ($(feature-bionic), 1)
 436    BIONIC := 1
 437    CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
 438    CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
 439    EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
 440    EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
 441  endif
 442endif
 443
 444ifeq ($(feature-eventfd), 1)
 445  CFLAGS += -DHAVE_EVENTFD_SUPPORT
 446endif
 447
 448ifeq ($(feature-gettid), 1)
 449  CFLAGS += -DHAVE_GETTID
 450endif
 451
 452ifeq ($(feature-file-handle), 1)
 453  CFLAGS += -DHAVE_FILE_HANDLE
 454endif
 455
 456ifdef NO_LIBELF
 457  NO_LIBDW := 1
 458  NO_LIBUNWIND := 1
 459  NO_LIBDW_DWARF_UNWIND := 1
 460  NO_LIBBPF := 1
 461  NO_JVMTI := 1
 462else
 463  ifeq ($(feature-libelf), 0)
 464    ifeq ($(feature-glibc), 1)
 465      LIBC_SUPPORT := 1
 466    endif
 467    ifeq ($(BIONIC),1)
 468      LIBC_SUPPORT := 1
 469    endif
 470    ifeq ($(LIBC_SUPPORT),1)
 471      $(error ERROR: No libelf found. Disables 'probe' tool, jvmti and BPF support. Please install libelf-dev, libelf-devel, elfutils-libelf-devel or build with NO_LIBELF=1.)
 472    else
 473      ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
 474        ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
 475          $(error No libasan found, please install libasan)
 476        endif
 477      endif
 478
 479      ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
 480        ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
 481          $(error No libubsan found, please install libubsan)
 482        endif
 483      endif
 484
 485      ifneq ($(filter s% -static%,$(LDFLAGS),),)
 486        $(error No static glibc found, please install glibc-static)
 487      else
 488        $(error No gnu/libc-version.h found, please install glibc-dev[el])
 489      endif
 490    endif
 491  else
 492    ifneq ($(feature-libdw), 1)
 493      ifndef NO_LIBDW
 494        $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.157, disables dwarf support. Please install new elfutils-devel/libdw-dev)
 495        NO_LIBDW := 1
 496      endif
 497    endif # Dwarf support
 498  endif # libelf support
 499endif # NO_LIBELF
 500
 501ifeq ($(feature-libaio), 1)
 502  ifndef NO_AIO
 503    CFLAGS += -DHAVE_AIO_SUPPORT
 504  endif
 505endif
 506
 507ifdef NO_LIBDW
 508  NO_LIBDW_DWARF_UNWIND := 1
 509endif
 510
 511ifeq ($(feature-scandirat), 1)
 512  # Ignore having scandirat with memory sanitizer that lacks an interceptor.
 513  ifeq ($(filter s% -fsanitize=memory%,$(EXTRA_CFLAGS),),)
 514    CFLAGS += -DHAVE_SCANDIRAT_SUPPORT
 515  endif
 516endif
 517
 518ifeq ($(feature-sched_getcpu), 1)
 519  CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
 520endif
 521
 522ifeq ($(feature-setns), 1)
 523  CFLAGS += -DHAVE_SETNS_SUPPORT
 524  $(call detected,CONFIG_SETNS)
 525endif
 526
 527ifeq ($(feature-reallocarray), 0)
 528  CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
 529endif
 530
 531ifdef CORESIGHT
 532  $(call feature_check,libopencsd)
 533  ifeq ($(feature-libopencsd), 1)
 534    CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
 535    LDFLAGS += $(LIBOPENCSD_LDFLAGS)
 536    EXTLIBS += $(OPENCSDLIBS)
 537    $(call detected,CONFIG_LIBOPENCSD)
 538    ifdef CSTRACE_RAW
 539      CFLAGS += -DCS_DEBUG_RAW
 540      ifeq (${CSTRACE_RAW}, packed)
 541        CFLAGS += -DCS_RAW_PACKED
 542      endif
 543    endif
 544  else
 545    $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
 546  endif
 547endif
 548
 549ifndef NO_ZLIB
 550  ifeq ($(feature-zlib), 1)
 551    CFLAGS += -DHAVE_ZLIB_SUPPORT
 552    EXTLIBS += -lz
 553    $(call detected,CONFIG_ZLIB)
 554  else
 555    NO_ZLIB := 1
 556  endif
 557endif
 558
 559ifndef NO_LIBELF
 560  CFLAGS += -DHAVE_LIBELF_SUPPORT
 561  EXTLIBS += -lelf
 562  $(call detected,CONFIG_LIBELF)
 563
 564  ifeq ($(feature-libelf-getphdrnum), 1)
 565    CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
 566  endif
 567
 568  ifeq ($(feature-libelf-gelf_getnote), 1)
 569    CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
 570  else
 571    $(warning gelf_getnote() not found on libelf, SDT support disabled)
 572  endif
 573
 574  ifeq ($(feature-libelf-getshdrstrndx), 1)
 575    CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
 576  endif
 577
 578  ifeq ($(feature-libelf-zstd), 1)
 579    ifdef NO_LIBZSTD
 580      $(error Error: libzstd is required by libelf, please do not set NO_LIBZSTD)
 581    endif
 582  endif
 583
 584  ifndef NO_LIBDEBUGINFOD
 585    $(call feature_check,libdebuginfod)
 586    ifeq ($(feature-libdebuginfod), 1)
 587      CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
 588      EXTLIBS += -ldebuginfod
 589    else
 590      $(warning No elfutils/debuginfod.h found, no debuginfo server support, please install libdebuginfod-dev/elfutils-debuginfod-client-devel or equivalent)
 591    endif
 592  endif
 593
 594  ifndef NO_LIBDW
 595    CFLAGS += -DHAVE_LIBDW_SUPPORT $(LIBDW_CFLAGS)
 596    LDFLAGS += $(LIBDW_LDFLAGS)
 597    EXTLIBS += ${DWARFLIBS}
 598    $(call detected,CONFIG_LIBDW)
 599  endif # NO_LIBDW
 600
 601  ifndef NO_LIBBPF
 602    ifeq ($(feature-bpf), 1)
 603      # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
 604      $(call feature_check,libbpf)
 605
 606      ifdef LIBBPF_DYNAMIC
 607        ifeq ($(feature-libbpf), 1)
 608          EXTLIBS += -lbpf
 609          CFLAGS += -DHAVE_LIBBPF_SUPPORT
 610          $(call detected,CONFIG_LIBBPF)
 611          $(call detected,CONFIG_LIBBPF_DYNAMIC)
 612        else
 613          $(error Error: No libbpf devel library found or older than v1.0, please install/update libbpf-devel)
 614        endif
 615      else
 616        ifeq ($(NO_ZLIB), 1)
 617          $(warning Warning: Statically building libbpf not possible as zlib is missing)
 618          NO_LIBBPF := 1
 619        else
 620          # Libbpf will be built as a static library from tools/lib/bpf.
 621          LIBBPF_STATIC := 1
 622          $(call detected,CONFIG_LIBBPF)
 623          CFLAGS += -DHAVE_LIBBPF_SUPPORT
 624	  LIBBPF_INCLUDE = $(LIBBPF_DIR)/..
 625        endif
 626      endif
 627    endif
 628  endif # NO_LIBBPF
 629endif # NO_LIBELF
 630
 631ifndef NO_SDT
 632  ifneq ($(feature-sdt), 1)
 633    $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev)
 634    NO_SDT := 1;
 635  else
 636    CFLAGS += -DHAVE_SDT_EVENT
 637    $(call detected,CONFIG_SDT_EVENT)
 638  endif
 639endif
 640
 641ifdef PERF_HAVE_JITDUMP
 642  ifndef NO_LIBELF
 643    $(call detected,CONFIG_JITDUMP)
 644    CFLAGS += -DHAVE_JITDUMP
 645  endif
 646endif
 647
 648ifeq ($(SRCARCH),powerpc)
 649  ifndef NO_LIBDW
 650    CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
 651  endif
 652endif
 653
 654ifndef NO_LIBUNWIND
 655  have_libunwind :=
 656
 657  $(call feature_check,libunwind)
 658
 659  $(call feature_check,libunwind-x86)
 660  ifeq ($(feature-libunwind-x86), 1)
 661    $(call detected,CONFIG_LIBUNWIND_X86)
 662    CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
 663    LDFLAGS += -lunwind-x86
 664    EXTLIBS_LIBUNWIND += -lunwind-x86
 665    have_libunwind = 1
 666  endif
 667
 668  $(call feature_check,libunwind-aarch64)
 669  ifeq ($(feature-libunwind-aarch64), 1)
 670    $(call detected,CONFIG_LIBUNWIND_AARCH64)
 671    CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
 672    LDFLAGS += -lunwind-aarch64
 673    EXTLIBS_LIBUNWIND += -lunwind-aarch64
 674    have_libunwind = 1
 675    $(call feature_check,libunwind-debug-frame-aarch64)
 676    ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
 677      $(warning No debug_frame support found in libunwind-aarch64)
 678      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
 679    endif
 680  endif
 681
 682  ifneq ($(feature-libunwind), 1)
 683    $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR and set LIBUNWIND=1 in the make command line as it is opt-in now)
 684    NO_LOCAL_LIBUNWIND := 1
 685  else
 686    have_libunwind := 1
 687    $(call detected,CONFIG_LOCAL_LIBUNWIND)
 688  endif
 689
 690  ifneq ($(have_libunwind), 1)
 691    NO_LIBUNWIND := 1
 692  endif
 693else
 694  NO_LOCAL_LIBUNWIND := 1
 695endif
 696
 697ifndef NO_LIBBPF
 698  ifneq ($(feature-bpf), 1)
 699    $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
 700    NO_LIBBPF := 1
 701  endif
 702endif
 703
 704ifeq ($(feature-libopenssl), 1)
 705  $(call detected,CONFIG_LIBOPENSSL)
 706  CFLAGS += -DHAVE_LIBOPENSSL_SUPPORT
 707endif
 708
 709ifndef BUILD_BPF_SKEL
 710  # BPF skeletons control a large number of perf features, by default
 711  # they are enabled.
 712  BUILD_BPF_SKEL := 1
 713endif
 714
 715ifeq ($(BUILD_BPF_SKEL),1)
 716  ifeq ($(filter -DHAVE_LIBELF_SUPPORT, $(CFLAGS)),)
 717    $(warning Warning: Disabled BPF skeletons as libelf is required by bpftool)
 718    BUILD_BPF_SKEL := 0
 719  else ifeq ($(filter -DHAVE_ZLIB_SUPPORT, $(CFLAGS)),)
 720    $(warning Warning: Disabled BPF skeletons as zlib is required by bpftool)
 721    BUILD_BPF_SKEL := 0
 722  else ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
 723    $(warning Warning: Disabled BPF skeletons as libbpf is required)
 724    BUILD_BPF_SKEL := 0
 725  else ifeq ($(filter -DHAVE_LIBOPENSSL_SUPPORT, $(CFLAGS)),)
 726    $(warning Warning: Disabled BPF skeletons as libopenssl is required)
 727    BUILD_BPF_SKEL := 0
 728  else ifeq ($(call get-executable,$(CLANG)),)
 729    $(warning Warning: Disabled BPF skeletons as clang ($(CLANG)) is missing)
 730    BUILD_BPF_SKEL := 0
 731  else
 732    CLANG_VERSION := $(shell $(CLANG) --version | head -1 | sed 's/.*clang version \([[:digit:]]\+.[[:digit:]]\+.[[:digit:]]\+\).*/\1/g')
 733    ifeq ($(call version-lt3,$(CLANG_VERSION),12.0.1),1)
 734      $(warning Warning: Disabled BPF skeletons as reliable BTF generation needs at least $(CLANG) version 12.0.1)
 735      BUILD_BPF_SKEL := 0
 736    endif
 737  endif
 738  ifeq ($(BUILD_BPF_SKEL),1)
 739    $(call feature_check,clang-bpf-co-re)
 740    ifeq ($(feature-clang-bpf-co-re), 0)
 741      $(warning Warning: Disabled BPF skeletons as clang is too old)
 742      BUILD_BPF_SKEL := 0
 743    endif
 744  endif
 745  ifeq ($(BUILD_BPF_SKEL),1)
 746    $(call detected,CONFIG_PERF_BPF_SKEL)
 747    CFLAGS += -DHAVE_BPF_SKEL
 748  endif
 749endif
 750
 751ifndef GEN_VMLINUX_H
 752  VMLINUX_H=$(src-perf)/util/bpf_skel/vmlinux/vmlinux.h
 753endif
 754
 755dwarf-post-unwind := 1
 756dwarf-post-unwind-text := BUG
 757
 758# setup DWARF post unwinder
 759ifdef NO_LIBUNWIND
 760  ifdef NO_LIBDW_DWARF_UNWIND
 761    $(warning Disabling post unwind, no support found.)
 762    dwarf-post-unwind := 0
 763  else
 764    dwarf-post-unwind-text := libdw
 765    $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
 766  endif
 767else
 768  dwarf-post-unwind-text := libunwind
 769  $(call detected,CONFIG_LIBUNWIND)
 770  # Enable libunwind support by default.
 771  ifndef NO_LIBDW_DWARF_UNWIND
 772    NO_LIBDW_DWARF_UNWIND := 1
 773  endif
 774endif
 775
 776ifeq ($(dwarf-post-unwind),1)
 777  CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
 778  $(call detected,CONFIG_DWARF_UNWIND)
 779endif
 780
 781ifndef NO_LIBUNWIND
 782  ifndef NO_LOCAL_LIBUNWIND
 783    ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
 784      $(call feature_check,libunwind-debug-frame)
 785      ifneq ($(feature-libunwind-debug-frame), 1)
 786        $(warning No debug_frame support found in libunwind)
 787        CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
 788      endif
 789    else
 790      # non-ARM has no dwarf_find_debug_frame() function:
 791      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
 792    endif
 793    EXTLIBS += $(LIBUNWIND_LIBS)
 794    LDFLAGS += $(LIBUNWIND_LIBS)
 795  endif
 796  ifeq ($(findstring -static,${LDFLAGS}),-static)
 797    # gcc -static links libgcc_eh which contans piece of libunwind
 798    LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
 799  endif
 800  CFLAGS  += -DHAVE_LIBUNWIND_SUPPORT
 801  CFLAGS  += $(LIBUNWIND_CFLAGS)
 802  LDFLAGS += $(LIBUNWIND_LDFLAGS)
 803  EXTLIBS += $(EXTLIBS_LIBUNWIND)
 804endif
 805
 806ifneq ($(NO_LIBTRACEEVENT),1)
 807  $(call detected,CONFIG_TRACE)
 808endif
 809
 810ifndef NO_SLANG
 811  ifneq ($(feature-libslang), 1)
 812    $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev)
 813    NO_SLANG := 1
 814  endif
 815  ifndef NO_SLANG
 816    CFLAGS += -DHAVE_SLANG_SUPPORT
 817    EXTLIBS += -lslang
 818    $(call detected,CONFIG_SLANG)
 819  endif
 820endif
 821
 822ifdef GTK2
 823  FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
 824  $(call feature_check,gtk2)
 825  ifneq ($(feature-gtk2), 1)
 826    $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev)
 827    NO_GTK2 := 1
 828  else
 829    $(call feature_check,gtk2-infobar)
 830    ifeq ($(feature-gtk2-infobar), 1)
 831      GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
 832    endif
 833    CFLAGS += -DHAVE_GTK2_SUPPORT
 834    GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
 835    GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
 836    EXTLIBS += -ldl
 837  endif
 838endif
 839
 840ifdef LIBPERL
 841  PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
 842  PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
 843  PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
 844  PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
 845  PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
 846  PERL_EMBED_CCOPTS := $(filter-out -flto% -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
 847  PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
 848  FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
 849
 850  $(call feature_check,libperl)
 851  ifneq ($(feature-libperl), 1)
 852    $(error Missing perl devel files. Please install perl-ExtUtils-Embed/libperl-dev)
 853  else
 854    LDFLAGS += $(PERL_EMBED_LDFLAGS)
 855    EXTLIBS += $(PERL_EMBED_LIBADD)
 856    CFLAGS += -DHAVE_LIBPERL_SUPPORT
 857    $(call detected,CONFIG_LIBPERL)
 858  endif
 859endif
 860
 861ifeq ($(feature-timerfd), 1)
 862  CFLAGS += -DHAVE_TIMERFD_SUPPORT
 863else
 864  $(warning No timerfd support. Disables 'perf kvm stat live')
 865endif
 866
 867disable-python = $(eval $(disable-python_code))
 868define disable-python_code
 869  CFLAGS += -DNO_LIBPYTHON
 870  $(warning $1)
 871  NO_LIBPYTHON := 1
 872endef
 873
 874PYTHON_EXTENSION_SUFFIX := '.so'
 875ifdef NO_LIBPYTHON
 876  $(call disable-python,Python support disabled by user)
 877else
 878
 879  ifndef PYTHON
 880    $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
 881  else
 882    PYTHON_WORD := $(call shell-wordify,$(PYTHON))
 883
 884    ifndef PYTHON_CONFIG
 885      $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
 886    else
 887
 888      ifneq ($(feature-libpython), 1)
 889        $(call disable-python,No 'Python.h' was found: disables Python support - please install python-devel/python-dev)
 890      else
 891         LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
 892         EXTLIBS += $(PYTHON_EMBED_LIBADD)
 893         PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")
 894         ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)
 895           PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')
 896           ifdef CROSS_COMPILE
 897             PYTHON_EXTENSION_SUFFIX := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EXTENSION_SUFFIX))
 898           endif
 899           LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)
 900	 else
 901           $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent)
 902         endif
 903         CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
 904         $(call detected,CONFIG_LIBPYTHON)
 905         ifeq ($(filter -fPIC,$(CFLAGS)),)
 906           # Building a shared library requires position independent code.
 907           CFLAGS += -fPIC
 908           CXXFLAGS += -fPIC
 909         endif
 910      endif
 911    endif
 912  endif
 913endif
 914
 915ifneq ($(NO_JEVENTS),1)
 916  ifeq ($(wildcard pmu-events/arch/$(SRCARCH)/mapfile.csv),)
 917    NO_JEVENTS := 1
 918  endif
 919endif
 920ifneq ($(NO_JEVENTS),1)
 921  NO_JEVENTS := 0
 922  ifndef PYTHON
 923    $(error ERROR: No python interpreter needed for jevents generation. Install python or build with NO_JEVENTS=1.)
 924  else
 925    # jevents.py uses f-strings present in Python 3.6 released in Dec. 2016.
 926    JEVENTS_PYTHON_GOOD := $(shell $(PYTHON) -c 'import sys;print("1" if(sys.version_info.major >= 3 and sys.version_info.minor >= 6) else "0")' 2> /dev/null)
 927    ifneq ($(JEVENTS_PYTHON_GOOD), 1)
 928      $(error ERROR: Python interpreter needed for jevents generation too old (older than 3.6). Install a newer python or build with NO_JEVENTS=1.)
 929    endif
 930  endif
 931endif
 932
 933ifdef BUILD_NONDISTRO
 934  $(call feature_check,libbfd)
 935
 936  ifeq ($(feature-libbfd), 1)
 937    EXTLIBS += -lbfd -lopcodes
 938    FEATURE_CHECK_LDFLAGS-disassembler-four-args = -lbfd -lopcodes -ldl
 939    FEATURE_CHECK_LDFLAGS-disassembler-init-styled = -lbfd -lopcodes -ldl
 940  else
 941    # we are on a system that requires -liberty and (maybe) -lz
 942    # to link against -lbfd; test each case individually here
 943
 944    # call all detections now so we get correct
 945    # status in VF output
 946    $(call feature_check,libbfd-liberty)
 947    $(call feature_check,libbfd-liberty-z)
 948
 949    ifeq ($(feature-libbfd-liberty), 1)
 950      EXTLIBS += -lbfd -lopcodes -liberty
 951      FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -ldl
 952      FEATURE_CHECK_LDFLAGS-disassembler-init-styled += -liberty -ldl
 953    else
 954      ifeq ($(feature-libbfd-liberty-z), 1)
 955        EXTLIBS += -lbfd -lopcodes -liberty -lz
 956        FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -lz -ldl
 957        FEATURE_CHECK_LDFLAGS-disassembler-init-styled += -liberty -lz -ldl
 958      endif
 959    endif
 960    $(call feature_check,disassembler-four-args)
 961    $(call feature_check,disassembler-init-styled)
 962  endif
 963
 964  CFLAGS += -DHAVE_LIBBFD_SUPPORT
 965  CXXFLAGS += -DHAVE_LIBBFD_SUPPORT
 966  $(call detected,CONFIG_LIBBFD)
 967
 968  $(call feature_check,libbfd-buildid)
 969
 970  ifeq ($(feature-libbfd-buildid), 1)
 971    CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
 972  else
 973    $(warning Old version of libbfd/binutils things like PE executable profiling will not be available)
 974  endif
 975
 976  ifeq ($(feature-disassembler-four-args), 1)
 977    CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
 978  endif
 979
 980  ifeq ($(feature-disassembler-init-styled), 1)
 981    CFLAGS += -DDISASM_INIT_STYLED
 982  endif
 983endif
 984
 985ifndef NO_LIBLLVM
 986  $(call feature_check,llvm-perf)
 987  ifeq ($(feature-llvm-perf), 1)
 988    CFLAGS += -DHAVE_LIBLLVM_SUPPORT
 989    CFLAGS += $(shell $(LLVM_CONFIG) --cflags)
 990    CXXFLAGS += -DHAVE_LIBLLVM_SUPPORT
 991    CXXFLAGS += $(shell $(LLVM_CONFIG) --cxxflags)
 992    LIBLLVM = $(shell $(LLVM_CONFIG) --libs all) $(shell $(LLVM_CONFIG) --system-libs)
 993    EXTLIBS += -L$(shell $(LLVM_CONFIG) --libdir) $(LIBLLVM)
 994    EXTLIBS += -lstdc++
 995    $(call detected,CONFIG_LIBLLVM)
 996  else
 997    $(warning No libllvm 13+ found, slower source file resolution, please install llvm-devel/llvm-dev)
 998    NO_LIBLLVM := 1
 999  endif
1000endif
1001
1002ifndef NO_DEMANGLE
1003  $(call feature_check,cxa-demangle)
1004  ifeq ($(feature-cxa-demangle), 1)
1005    EXTLIBS += -lstdc++
1006    CFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
1007    CXXFLAGS += -DHAVE_CXA_DEMANGLE_SUPPORT
1008    $(call detected,CONFIG_CXX_DEMANGLE)
1009  endif
1010  ifdef BUILD_NONDISTRO
1011    ifeq ($(filter -liberty,$(EXTLIBS)),)
1012      $(call feature_check,cplus-demangle)
1013      ifeq ($(feature-cplus-demangle), 1)
1014        EXTLIBS += -liberty
1015      endif
1016    endif
1017    ifneq ($(filter -liberty,$(EXTLIBS)),)
1018      CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
1019      CXXFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
1020    endif
1021  endif
1022endif
1023
1024ifndef NO_LZMA
1025  ifeq ($(feature-lzma), 1)
1026    CFLAGS += -DHAVE_LZMA_SUPPORT
1027    EXTLIBS += -llzma
1028    $(call detected,CONFIG_LZMA)
1029  else
1030    $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev)
1031    NO_LZMA := 1
1032  endif
1033endif
1034
1035ifndef NO_LIBZSTD
1036  ifeq ($(feature-libzstd), 1)
1037    CFLAGS += -DHAVE_ZSTD_SUPPORT
1038    CFLAGS += $(LIBZSTD_CFLAGS)
1039    LDFLAGS += $(LIBZSTD_LDFLAGS)
1040    EXTLIBS += -lzstd
1041    $(call detected,CONFIG_ZSTD)
1042  else
1043    $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR)
1044    NO_LIBZSTD := 1
1045  endif
1046endif
1047
1048ifndef NO_BACKTRACE
1049  ifeq ($(feature-backtrace), 1)
1050    CFLAGS += -DHAVE_BACKTRACE_SUPPORT
1051  endif
1052endif
1053
1054ifndef NO_LIBNUMA
1055  ifeq ($(feature-libnuma), 0)
1056    $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev)
1057    NO_LIBNUMA := 1
1058  else
1059    ifeq ($(feature-numa_num_possible_cpus), 0)
1060      $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8)
1061      NO_LIBNUMA := 1
1062    else
1063      CFLAGS += -DHAVE_LIBNUMA_SUPPORT
1064      EXTLIBS += -lnuma
1065      $(call detected,CONFIG_NUMA)
1066    endif
1067  endif
1068endif
1069
1070ifdef HAVE_KVM_STAT_SUPPORT
1071    CFLAGS += -DHAVE_KVM_STAT_SUPPORT
1072endif
1073
1074ifeq (${IS_64_BIT}, 1)
1075  ifndef NO_PERF_READ_VDSO32
1076    $(call feature_check,compile-32)
1077    ifeq ($(feature-compile-32), 1)
1078      CFLAGS += -DHAVE_PERF_READ_VDSO32
1079    else
1080      NO_PERF_READ_VDSO32 := 1
1081    endif
1082  endif
1083  ifneq ($(SRCARCH), x86)
1084    NO_PERF_READ_VDSOX32 := 1
1085  endif
1086  ifndef NO_PERF_READ_VDSOX32
1087    $(call feature_check,compile-x32)
1088    ifeq ($(feature-compile-x32), 1)
1089      CFLAGS += -DHAVE_PERF_READ_VDSOX32
1090    else
1091      NO_PERF_READ_VDSOX32 := 1
1092    endif
1093  endif
1094else
1095  NO_PERF_READ_VDSO32 := 1
1096  NO_PERF_READ_VDSOX32 := 1
1097endif
1098
1099ifndef NO_LIBBABELTRACE
1100  $(call feature_check,libbabeltrace)
1101  ifeq ($(feature-libbabeltrace), 1)
1102    CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
1103    LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
1104    EXTLIBS += -lbabeltrace-ctf
1105    $(call detected,CONFIG_LIBBABELTRACE)
1106  else
1107    $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev)
1108  endif
1109endif
1110
1111ifndef NO_CAPSTONE
1112  $(call feature_check,libcapstone)
1113  ifeq ($(feature-libcapstone), 1)
1114    CFLAGS += -DHAVE_LIBCAPSTONE_SUPPORT $(LIBCAPSTONE_CFLAGS)
1115    LDFLAGS += $(LICAPSTONE_LDFLAGS)
1116    EXTLIBS += -lcapstone
1117    $(call detected,CONFIG_LIBCAPSTONE)
1118  else
1119    msg := $(warning No libcapstone found, disables disasm engine support for 'perf script', please install libcapstone-dev/capstone-devel);
1120  endif
1121endif
1122
1123ifdef EXTRA_TESTS
1124    $(call detected,CONFIG_EXTRA_TESTS)
1125    CFLAGS += -DHAVE_EXTRA_TESTS
1126endif
1127
1128ifndef NO_JVMTI
1129  ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
1130    JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
1131  else
1132    ifneq (,$(wildcard /usr/sbin/alternatives))
1133      JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
1134    endif
1135  endif
1136  ifndef JDIR
1137    $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
1138    NO_JVMTI := 1
1139  endif
1140endif
1141
1142ifndef NO_JVMTI
1143  FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
1144  $(call feature_check,jvmti)
1145  ifeq ($(feature-jvmti), 1)
1146    $(call detected_var,JDIR)
1147    ifndef NO_JVMTI_CMLR
1148      FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
1149      $(call feature_check,jvmti-cmlr)
1150      ifeq ($(feature-jvmti-cmlr), 1)
1151        CFLAGS += -DHAVE_JVMTI_CMLR
1152      endif
1153    endif # NO_JVMTI_CMLR
1154  else
1155    $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-latest-openjdk-devel)
1156    NO_JVMTI := 1
1157  endif
1158endif
1159
1160ifndef NO_LIBPFM4
1161  $(call feature_check,libpfm4)
1162  ifeq ($(feature-libpfm4), 1)
1163    CFLAGS += -DHAVE_LIBPFM
1164    EXTLIBS += -lpfm
1165    ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
1166    $(call detected,CONFIG_LIBPFM4)
1167  else
1168    $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm-devel or libpfm4-dev)
1169  endif
1170endif
1171
1172# libtraceevent is a recommended dependency picked up from the system.
1173ifneq ($(NO_LIBTRACEEVENT),1)
1174  ifeq ($(feature-libtraceevent), 1)
1175    CFLAGS += -DHAVE_LIBTRACEEVENT $(shell $(PKG_CONFIG) --cflags libtraceevent)
1176    LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libtraceevent)
1177    EXTLIBS += $(shell $(PKG_CONFIG) --libs-only-l libtraceevent)
1178    LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent).0.0
1179    LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1180    LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1181    LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
1182    LIBTRACEEVENT_VERSION_CPP := $(shell expr $(LIBTRACEEVENT_VERSION_1) \* 255 \* 255 + $(LIBTRACEEVENT_VERSION_2) \* 255 + $(LIBTRACEEVENT_VERSION_3))
1183    CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
1184    $(call detected,CONFIG_LIBTRACEEVENT)
1185  else
1186    $(error ERROR: libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel and/or set LIBTRACEEVENT_DIR or build with NO_LIBTRACEEVENT=1)
1187  endif
1188endif
1189
1190# Among the variables below, these:
1191#   perfexecdir
1192#   libbpf_include_dir
1193#   perf_examples_dir
1194#   template_dir
1195#   mandir
1196#   infodir
1197#   htmldir
1198#   ETC_PERFCONFIG (but not sysconfdir)
1199# can be specified as a relative path some/where/else;
1200# this is interpreted as relative to $(prefix) and "perf" at
1201# runtime figures out where they are based on the path to the executable.
1202# This can help installing the suite in a relocatable way.
1203
1204# Make the path relative to DESTDIR, not to prefix
1205ifndef DESTDIR
1206prefix ?= $(HOME)
1207endif
1208bindir_relative = bin
1209bindir = $(abspath $(prefix)/$(bindir_relative))
1210includedir_relative = include
1211includedir = $(abspath $(prefix)/$(includedir_relative))
1212mandir = share/man
1213infodir = share/info
1214perfexecdir = libexec/perf-core
1215# FIXME: system's libbpf header directory, where we expect to find bpf/bpf_helpers.h, for instance
1216libbpf_include_dir = /usr/include
1217perf_examples_dir = lib/perf/examples
1218sharedir = $(prefix)/share
1219template_dir = share/perf-core/templates
1220STRACE_GROUPS_DIR = share/perf-core/strace/groups
1221htmldir = share/doc/perf-doc
1222tipdir = share/doc/perf-tip
1223srcdir = $(srctree)/tools/perf
1224ifeq ($(prefix),/usr)
1225sysconfdir = /etc
1226ETC_PERFCONFIG = $(sysconfdir)/perfconfig
1227else
1228sysconfdir = $(prefix)/etc
1229ETC_PERFCONFIG = etc/perfconfig
1230endif
1231ifndef lib
1232ifeq ($(SRCARCH)$(IS_64_BIT), x861)
1233lib = lib64
1234else
1235lib = lib
1236endif
1237endif # lib
1238libdir = $(prefix)/$(lib)
1239
1240# Shell quote (do not use $(call) to accommodate ancient setups);
1241ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
1242STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
1243DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
1244bindir_SQ = $(subst ','\'',$(bindir))
1245includedir_SQ = $(subst ','\'',$(includedir))
1246mandir_SQ = $(subst ','\'',$(mandir))
1247infodir_SQ = $(subst ','\'',$(infodir))
1248perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
1249libbpf_include_dir_SQ = $(subst ','\'',$(libbpf_include_dir))
1250perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
1251template_dir_SQ = $(subst ','\'',$(template_dir))
1252htmldir_SQ = $(subst ','\'',$(htmldir))
1253tipdir_SQ = $(subst ','\'',$(tipdir))
1254prefix_SQ = $(subst ','\'',$(prefix))
1255sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
1256libdir_SQ = $(subst ','\'',$(libdir))
1257srcdir_SQ = $(subst ','\'',$(srcdir))
1258
1259ifneq ($(filter /%,$(firstword $(perfexecdir))),)
1260perfexec_instdir = $(perfexecdir)
1261perf_include_instdir = $(libbpf_include_dir)
1262perf_examples_instdir = $(perf_examples_dir)
1263STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
1264tip_instdir = $(tipdir)
1265else
1266perfexec_instdir = $(prefix)/$(perfexecdir)
1267perf_include_instdir = $(prefix)/$(libbpf_include_dir)
1268perf_examples_instdir = $(prefix)/$(perf_examples_dir)
1269STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
1270tip_instdir = $(prefix)/$(tipdir)
1271endif
1272perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
1273perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
1274perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
1275STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
1276tip_instdir_SQ = $(subst ','\'',$(tip_instdir))
1277
1278export perfexec_instdir_SQ
1279
1280print_var = $(eval $(print_var_code)) $(info $(MSG))
1281define print_var_code
1282    MSG = $(shell printf '...%40s: %s' $(1) $($(1)))
1283endef
1284
1285ifeq ($(feature_display),1)
1286  $(call feature_display_entries)
1287endif
1288
1289ifeq ($(VF),1)
1290  # Display EXTRA features which are detected manualy
1291  # from here with feature_check call and thus cannot
1292  # be partof global state output.
1293  $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),) $(info $(MSG)))
1294  $(call print_var,prefix)
1295  $(call print_var,bindir)
1296  $(call print_var,libdir)
1297  $(call print_var,sysconfdir)
1298  $(call print_var,LIBUNWIND_DIR)
1299  $(call print_var,LIBDW_DIR)
1300  $(call print_var,JDIR)
1301
1302  ifeq ($(dwarf-post-unwind),1)
1303    $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text)) $(info $(MSG))
1304  endif
1305endif
1306
1307$(info )
1308
1309$(call detected_var,bindir_SQ)
1310$(call detected_var,PYTHON_WORD)
1311ifneq ($(OUTPUT),)
1312$(call detected_var,OUTPUT)
1313endif
1314$(call detected_var,htmldir_SQ)
1315$(call detected_var,infodir_SQ)
1316$(call detected_var,mandir_SQ)
1317$(call detected_var,ETC_PERFCONFIG_SQ)
1318$(call detected_var,STRACE_GROUPS_DIR_SQ)
1319$(call detected_var,prefix_SQ)
1320$(call detected_var,perfexecdir_SQ)
1321$(call detected_var,libbpf_include_dir_SQ)
1322$(call detected_var,perf_examples_dir_SQ)
1323$(call detected_var,tipdir_SQ)
1324$(call detected_var,srcdir_SQ)
1325$(call detected_var,LIBDIR)
1326$(call detected_var,GTK_CFLAGS)
1327$(call detected_var,PERL_EMBED_CCOPTS)
1328$(call detected_var,PYTHON_EMBED_CCOPTS)
1329ifneq ($(BISON_FILE_PREFIX_MAP),)
1330$(call detected_var,BISON_FILE_PREFIX_MAP)
1331endif
1332
1333# re-generate FEATURE-DUMP as we may have called feature_check, found out
1334# extra libraries to add to LDFLAGS of some other test and then redo those
1335# tests, see the block about libbfd, disassembler-four-args, for instance.
1336$(shell rm -f $(FEATURE_DUMP_FILENAME))
1337$(foreach feat,$(FEATURE_TESTS),$(shell echo "$(call feature_assign,$(feat))" >> $(FEATURE_DUMP_FILENAME)))