tools/perf/Makefile.config

   1 # SPDX-License-Identifier: GPL-2.0-only
   2
   3 ifeq ($(src-perf),)
   4 src-perf := $(srctree)/tools/perf
   5 endif
   6
   7 ifeq ($(obj-perf),)
   8 obj-perf := $(OUTPUT)
   9 endif
  10
  11 ifneq ($(obj-perf),)
  12 obj-perf := $(abspath $(obj-perf))/
  13 endif
  14
  15 $(shell printf "" > $(OUTPUT).config-detected)
  16 detected     = $(shell echo "$(1)=y"       >> $(OUTPUT).config-detected)
  17 detected_var = $(shell echo "$(1)=$($(1))" >> $(OUTPUT).config-detected)
  18
  19 CFLAGS := $(EXTRA_CFLAGS) $(filter-out -Wnested-externs,$(EXTRA_WARNINGS))
  20
  21 include $(srctree)/tools/scripts/Makefile.arch
  22
  23 $(call detected_var,SRCARCH)
  24
  25 NO_PERF_REGS := 1
  26
  27 ifneq ($(NO_SYSCALL_TABLE),1)
  28   NO_SYSCALL_TABLE := 1
  29
  30   ifeq ($(SRCARCH),x86)
  31     ifeq (${IS_64_BIT}, 1)
  32       NO_SYSCALL_TABLE := 0
  33     endif
  34   else
  35     ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc arm64 s390))
  36       NO_SYSCALL_TABLE := 0
  37     endif
  38   endif
  39
  40   ifneq ($(NO_SYSCALL_TABLE),1)
  41     CFLAGS += -DHAVE_SYSCALL_TABLE_SUPPORT
  42   endif
  43 endif
  44
  45 # Additional ARCH settings for ppc
  46 ifeq ($(SRCARCH),powerpc)
  47   NO_PERF_REGS := 0
  48   CFLAGS += -I$(OUTPUT)arch/powerpc/include/generated
  49   LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
  50 endif
  51
  52 # Additional ARCH settings for x86
  53 ifeq ($(SRCARCH),x86)
  54   $(call detected,CONFIG_X86)
  55   ifeq (${IS_64_BIT}, 1)
  56     CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT -I$(OUTPUT)arch/x86/include/generated
  57     ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
  58     LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
  59     $(call detected,CONFIG_X86_64)
  60   else
  61     LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
  62   endif
  63   NO_PERF_REGS := 0
  64 endif
  65
  66 ifeq ($(SRCARCH),arm)
  67   NO_PERF_REGS := 0
  68   LIBUNWIND_LIBS = -lunwind -lunwind-arm
  69 endif
  70
  71 ifeq ($(SRCARCH),arm64)
  72   NO_PERF_REGS := 0
  73   CFLAGS += -I$(OUTPUT)arch/arm64/include/generated
  74   LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
  75 endif
  76
  77 ifeq ($(SRCARCH),riscv)
  78   NO_PERF_REGS := 0
  79 endif
  80
  81 ifeq ($(SRCARCH),csky)
  82   NO_PERF_REGS := 0
  83 endif
  84
  85 ifeq ($(ARCH),s390)
  86   NO_PERF_REGS := 0
  87   CFLAGS += -fPIC -I$(OUTPUT)arch/s390/include/generated
  88 endif
  89
  90 ifeq ($(NO_PERF_REGS),0)
  91   $(call detected,CONFIG_PERF_REGS)
  92 endif
  93
  94 # So far there's only x86 and arm libdw unwind support merged in perf.
  95 # Disable it on all other architectures in case libdw unwind
  96 # support is detected in system. Add supported architectures
  97 # to the check.
  98 ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv))
  99   NO_LIBDW_DWARF_UNWIND := 1
 100 endif
 101
 102 ifeq ($(LIBUNWIND_LIBS),)
 103   NO_LIBUNWIND := 1
 104 endif
 105 #
 106 # For linking with debug library, run like:
 107 #
 108 #   make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
 109 #
 110
 111 libunwind_arch_set_flags = $(eval $(libunwind_arch_set_flags_code))
 112 define libunwind_arch_set_flags_code
 113   FEATURE_CHECK_CFLAGS-libunwind-$(1)  = -I$(LIBUNWIND_DIR)/include
 114   FEATURE_CHECK_LDFLAGS-libunwind-$(1) = -L$(LIBUNWIND_DIR)/lib
 115 endef
 116
 117 ifdef LIBUNWIND_DIR
 118   LIBUNWIND_CFLAGS  = -I$(LIBUNWIND_DIR)/include
 119   LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib
 120   LIBUNWIND_ARCHS = x86 x86_64 arm aarch64 debug-frame-arm debug-frame-aarch64
 121   $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
 122 endif
 123
 124 # Set per-feature check compilation flags
 125 FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
 126 FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
 127 FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
 128 FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
 129
 130 FEATURE_CHECK_LDFLAGS-libunwind-arm = -lunwind -lunwind-arm
 131 FEATURE_CHECK_LDFLAGS-libunwind-aarch64 = -lunwind -lunwind-aarch64
 132 FEATURE_CHECK_LDFLAGS-libunwind-x86 = -lunwind -llzma -lunwind-x86
 133 FEATURE_CHECK_LDFLAGS-libunwind-x86_64 = -lunwind -llzma -lunwind-x86_64
 134
 135 FEATURE_CHECK_LDFLAGS-libcrypto = -lcrypto
 136
 137 ifdef CSINCLUDES
 138   LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)
 139 endif
 140 OPENCSDLIBS := -lopencsd_c_api -lopencsd
 141 ifdef CSLIBS
 142   LIBOPENCSD_LDFLAGS := -L$(CSLIBS)
 143 endif
 144 FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
 145 FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)
 146
 147 ifeq ($(NO_PERF_REGS),0)
 148   CFLAGS += -DHAVE_PERF_REGS_SUPPORT
 149 endif
 150
 151 # for linking with debug library, run like:
 152 # make DEBUG=1 LIBDW_DIR=/opt/libdw/
 153 ifdef LIBDW_DIR
 154   LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
 155   LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
 156 endif
 157 DWARFLIBS := -ldw
 158 ifeq ($(findstring -static,${LDFLAGS}),-static)
 159   DWARFLIBS += -lelf -lebl -ldl -lz -llzma -lbz2
 160 endif
 161 FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
 162 FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS)
 163
 164 # for linking with debug library, run like:
 165 # make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
 166 ifdef LIBBABELTRACE_DIR
 167   LIBBABELTRACE_CFLAGS  := -I$(LIBBABELTRACE_DIR)/include
 168   LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib
 169 endif
 170 FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
 171 FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
 172
 173 ifdef LIBZSTD_DIR
 174   LIBZSTD_CFLAGS  := -I$(LIBZSTD_DIR)/lib
 175   LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
 176 endif
 177 FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
 178 FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)
 179
 180 FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi
 181 # include ARCH specific config
 182 -include $(src-perf)/arch/$(SRCARCH)/Makefile
 183
 184 ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
 185   CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
 186 endif
 187
 188 include $(srctree)/tools/scripts/utilities.mak
 189
 190 ifeq ($(call get-executable,$(FLEX)),)
 191   dummy := $(error Error: $(FLEX) is missing on this system, please install it)
 192 endif
 193
 194 ifeq ($(call get-executable,$(BISON)),)
 195   dummy := $(error Error: $(BISON) is missing on this system, please install it)
 196 endif
 197
 198 # Treat warnings as errors unless directed not to
 199 ifneq ($(WERROR),0)
 200   CORE_CFLAGS += -Werror
 201   CXXFLAGS += -Werror
 202 endif
 203
 204 ifndef DEBUG
 205   DEBUG := 0
 206 endif
 207
 208 ifeq ($(DEBUG),0)
 209 ifeq ($(CC_NO_CLANG), 0)
 210   CORE_CFLAGS += -O3
 211 else
 212   CORE_CFLAGS += -O6
 213 endif
 214 endif
 215
 216 ifdef PARSER_DEBUG
 217   PARSER_DEBUG_BISON := -t
 218   PARSER_DEBUG_FLEX  := -d
 219   CFLAGS             += -DPARSER_DEBUG
 220   $(call detected_var,PARSER_DEBUG_BISON)
 221   $(call detected_var,PARSER_DEBUG_FLEX)
 222 endif
 223
 224 # Try different combinations to accommodate systems that only have
 225 # python[2][-config] in weird combinations but always preferring
 226 # python2 and python2-config as per pep-0394. If python2 or python
 227 # aren't found, then python3 is used.
 228 PYTHON_AUTO := python
 229 PYTHON_AUTO := $(if $(call get-executable,python3),python3,$(PYTHON_AUTO))
 230 PYTHON_AUTO := $(if $(call get-executable,python),python,$(PYTHON_AUTO))
 231 PYTHON_AUTO := $(if $(call get-executable,python2),python2,$(PYTHON_AUTO))
 232 override PYTHON := $(call get-executable-or-default,PYTHON,$(PYTHON_AUTO))
 233 PYTHON_AUTO_CONFIG := \
 234   $(if $(call get-executable,$(PYTHON)-config),$(PYTHON)-config,python-config)
 235 override PYTHON_CONFIG := \
 236   $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO_CONFIG))
 237
 238 grep-libs  = $(filter -l%,$(1))
 239 strip-libs  = $(filter-out -l%,$(1))
 240
 241 PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
 242
 243 # Python 3.8 changed the output of `python-config --ldflags` to not include the
 244 # '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for
 245 # libpython fails if that flag is not included in LDFLAGS
 246 ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0)
 247   PYTHON_CONFIG_LDFLAGS := --ldflags --embed
 248 else
 249   PYTHON_CONFIG_LDFLAGS := --ldflags
 250 endif
 251
 252 ifdef PYTHON_CONFIG
 253   PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
 254   PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
 255   PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
 256   PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
 257   FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
 258 endif
 259
 260 FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
 261 FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
 262 FEATURE_CHECK_CFLAGS-libpython-version := $(PYTHON_EMBED_CCOPTS)
 263 FEATURE_CHECK_LDFLAGS-libpython-version := $(PYTHON_EMBED_LDOPTS)
 264
 265 FEATURE_CHECK_LDFLAGS-libaio = -lrt
 266
 267 FEATURE_CHECK_LDFLAGS-disassembler-four-args = -lbfd -lopcodes -ldl
 268
 269 CORE_CFLAGS += -fno-omit-frame-pointer
 270 CORE_CFLAGS += -ggdb3
 271 CORE_CFLAGS += -funwind-tables
 272 CORE_CFLAGS += -Wall
 273 CORE_CFLAGS += -Wextra
 274 CORE_CFLAGS += -std=gnu99
 275
 276 CXXFLAGS += -std=gnu++11 -fno-exceptions -fno-rtti
 277 CXXFLAGS += -Wall
 278 CXXFLAGS += -fno-omit-frame-pointer
 279 CXXFLAGS += -ggdb3
 280 CXXFLAGS += -funwind-tables
 281 CXXFLAGS += -Wno-strict-aliasing
 282
 283 # Enforce a non-executable stack, as we may regress (again) in the future by
 284 # adding assembler files missing the .GNU-stack linker note.
 285 LDFLAGS += -Wl,-z,noexecstack
 286
 287 EXTLIBS = -lpthread -lrt -lm -ldl
 288
 289 ifneq ($(TCMALLOC),)
 290   CFLAGS += -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
 291   EXTLIBS += -ltcmalloc
 292 endif
 293
 294 ifeq ($(FEATURES_DUMP),)
 295 include $(srctree)/tools/build/Makefile.feature
 296 else
 297 include $(FEATURES_DUMP)
 298 endif
 299
 300 ifeq ($(feature-stackprotector-all), 1)
 301   CORE_CFLAGS += -fstack-protector-all
 302 endif
 303
 304 ifeq ($(DEBUG),0)
 305   ifeq ($(feature-fortify-source), 1)
 306     CORE_CFLAGS += -D_FORTIFY_SOURCE=2
 307   endif
 308 endif
 309
 310 INC_FLAGS += -I$(srctree)/tools/lib/perf/include
 311 INC_FLAGS += -I$(src-perf)/util/include
 312 INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
 313 INC_FLAGS += -I$(srctree)/tools/include/
 314 INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi
 315 INC_FLAGS += -I$(srctree)/tools/include/uapi
 316 INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/include/
 317 INC_FLAGS += -I$(srctree)/tools/arch/$(SRCARCH)/
 318
 319 # $(obj-perf)      for generated common-cmds.h
 320 # $(obj-perf)/util for generated bison/flex headers
 321 ifneq ($(OUTPUT),)
 322 INC_FLAGS += -I$(obj-perf)/util
 323 INC_FLAGS += -I$(obj-perf)
 324 endif
 325
 326 INC_FLAGS += -I$(src-perf)/util
 327 INC_FLAGS += -I$(src-perf)
 328 INC_FLAGS += -I$(srctree)/tools/lib/
 329
 330 CORE_CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
 331
 332 CFLAGS   += $(CORE_CFLAGS) $(INC_FLAGS)
 333 CXXFLAGS += $(INC_FLAGS)
 334
 335 LIBPERF_CFLAGS := $(CORE_CFLAGS) $(EXTRA_CFLAGS)
 336
 337 ifeq ($(feature-sync-compare-and-swap), 1)
 338   CFLAGS += -DHAVE_SYNC_COMPARE_AND_SWAP_SUPPORT
 339 endif
 340
 341 ifeq ($(feature-pthread-attr-setaffinity-np), 1)
 342   CFLAGS += -DHAVE_PTHREAD_ATTR_SETAFFINITY_NP
 343 endif
 344
 345 ifeq ($(feature-pthread-barrier), 1)
 346   CFLAGS += -DHAVE_PTHREAD_BARRIER
 347 endif
 348
 349 ifndef NO_BIONIC
 350   $(call feature_check,bionic)
 351   ifeq ($(feature-bionic), 1)
 352     BIONIC := 1
 353     CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
 354     CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
 355     EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
 356     EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
 357   endif
 358 endif
 359
 360 ifeq ($(feature-eventfd), 1)
 361   CFLAGS += -DHAVE_EVENTFD_SUPPORT
 362 endif
 363
 364 ifeq ($(feature-get_current_dir_name), 1)
 365   CFLAGS += -DHAVE_GET_CURRENT_DIR_NAME
 366 endif
 367
 368 ifeq ($(feature-gettid), 1)
 369   CFLAGS += -DHAVE_GETTID
 370 endif
 371
 372 ifeq ($(feature-file-handle), 1)
 373   CFLAGS += -DHAVE_FILE_HANDLE
 374 endif
 375
 376 ifdef NO_LIBELF
 377   NO_DWARF := 1
 378   NO_DEMANGLE := 1
 379   NO_LIBUNWIND := 1
 380   NO_LIBDW_DWARF_UNWIND := 1
 381   NO_LIBBPF := 1
 382   NO_JVMTI := 1
 383 else
 384   ifeq ($(feature-libelf), 0)
 385     ifeq ($(feature-glibc), 1)
 386       LIBC_SUPPORT := 1
 387     endif
 388     ifeq ($(BIONIC),1)
 389       LIBC_SUPPORT := 1
 390     endif
 391     ifeq ($(LIBC_SUPPORT),1)
 392       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);
 393
 394       NO_LIBELF := 1
 395       NO_DWARF := 1
 396       NO_DEMANGLE := 1
 397       NO_LIBUNWIND := 1
 398       NO_LIBDW_DWARF_UNWIND := 1
 399       NO_LIBBPF := 1
 400       NO_JVMTI := 1
 401     else
 402       ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
 403         ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
 404           msg := $(error No libasan found, please install libasan);
 405         endif
 406       endif
 407
 408       ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
 409         ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
 410           msg := $(error No libubsan found, please install libubsan);
 411         endif
 412       endif
 413
 414       ifneq ($(filter s% -static%,$(LDFLAGS),),)
 415         msg := $(error No static glibc found, please install glibc-static);
 416       else
 417         msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
 418       endif
 419     endif
 420   else
 421     ifndef NO_LIBDW_DWARF_UNWIND
 422       ifneq ($(feature-libdw-dwarf-unwind),1)
 423         NO_LIBDW_DWARF_UNWIND := 1
 424         msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
 425       endif
 426     endif
 427     ifneq ($(feature-dwarf), 1)
 428       ifndef NO_DWARF
 429         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);
 430         NO_DWARF := 1
 431       endif
 432     else
 433       ifneq ($(feature-dwarf_getlocations), 1)
 434         msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157);
 435       else
 436         CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
 437       endif # dwarf_getlocations
 438     endif # Dwarf support
 439   endif # libelf support
 440 endif # NO_LIBELF
 441
 442 ifeq ($(feature-glibc), 1)
 443   CFLAGS += -DHAVE_GLIBC_SUPPORT
 444 endif
 445
 446 ifeq ($(feature-libaio), 1)
 447   ifndef NO_AIO
 448     CFLAGS += -DHAVE_AIO_SUPPORT
 449   endif
 450 endif
 451
 452 ifdef NO_DWARF
 453   NO_LIBDW_DWARF_UNWIND := 1
 454 endif
 455
 456 ifeq ($(feature-sched_getcpu), 1)
 457   CFLAGS += -DHAVE_SCHED_GETCPU_SUPPORT
 458 endif
 459
 460 ifeq ($(feature-setns), 1)
 461   CFLAGS += -DHAVE_SETNS_SUPPORT
 462   $(call detected,CONFIG_SETNS)
 463 endif
 464
 465 ifdef CORESIGHT
 466   $(call feature_check,libopencsd)
 467   ifeq ($(feature-libopencsd), 1)
 468     CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
 469     ifeq ($(feature-reallocarray), 0)
 470       CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
 471     endif
 472     LDFLAGS += $(LIBOPENCSD_LDFLAGS)
 473     EXTLIBS += $(OPENCSDLIBS)
 474     $(call detected,CONFIG_LIBOPENCSD)
 475     ifdef CSTRACE_RAW
 476       CFLAGS += -DCS_DEBUG_RAW
 477       ifeq (${CSTRACE_RAW}, packed)
 478         CFLAGS += -DCS_RAW_PACKED
 479       endif
 480     endif
 481   endif
 482 endif
 483
 484 ifndef NO_LIBELF
 485   CFLAGS += -DHAVE_LIBELF_SUPPORT
 486   EXTLIBS += -lelf
 487   $(call detected,CONFIG_LIBELF)
 488
 489   ifeq ($(feature-libelf-getphdrnum), 1)
 490     CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
 491   endif
 492
 493   ifeq ($(feature-libelf-gelf_getnote), 1)
 494     CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
 495   else
 496     msg := $(warning gelf_getnote() not found on libelf, SDT support disabled);
 497   endif
 498
 499   ifeq ($(feature-libelf-getshdrstrndx), 1)
 500     CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
 501   endif
 502
 503   ifndef NO_LIBDEBUGINFOD
 504     $(call feature_check,libdebuginfod)
 505     ifeq ($(feature-libdebuginfod), 1)
 506       CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
 507       EXTLIBS += -ldebuginfod
 508     endif
 509   endif
 510
 511   ifndef NO_DWARF
 512     ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
 513       msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled);
 514       NO_DWARF := 1
 515     else
 516       CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS)
 517       LDFLAGS += $(LIBDW_LDFLAGS)
 518       EXTLIBS += ${DWARFLIBS}
 519       $(call detected,CONFIG_DWARF)
 520     endif # PERF_HAVE_DWARF_REGS
 521   endif # NO_DWARF
 522
 523   ifndef NO_LIBBPF
 524     ifeq ($(feature-bpf), 1)
 525       CFLAGS += -DHAVE_LIBBPF_SUPPORT
 526       $(call detected,CONFIG_LIBBPF)
 527
 528       # detecting libbpf without LIBBPF_DYNAMIC, so make VF=1 shows libbpf detection status
 529       $(call feature_check,libbpf)
 530       ifdef LIBBPF_DYNAMIC
 531         ifeq ($(feature-libbpf), 1)
 532           EXTLIBS += -lbpf
 533         else
 534           dummy := $(error Error: No libbpf devel library found, please install libbpf-devel);
 535         endif
 536       endif
 537     endif
 538
 539     ifndef NO_DWARF
 540       ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
 541         CFLAGS += -DHAVE_BPF_PROLOGUE
 542         $(call detected,CONFIG_BPF_PROLOGUE)
 543       else
 544         msg := $(warning BPF prologue is not supported by architecture $(SRCARCH), missing regs_query_register_offset());
 545       endif
 546     else
 547       msg := $(warning DWARF support is off, BPF prologue is disabled);
 548     endif
 549
 550   endif # NO_LIBBPF
 551 endif # NO_LIBELF
 552
 553 ifndef NO_SDT
 554   ifneq ($(feature-sdt), 1)
 555     msg := $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev);
 556     NO_SDT := 1;
 557   else
 558     CFLAGS += -DHAVE_SDT_EVENT
 559     $(call detected,CONFIG_SDT_EVENT)
 560   endif
 561 endif
 562
 563 ifdef PERF_HAVE_JITDUMP
 564   ifndef NO_LIBELF
 565     $(call detected,CONFIG_JITDUMP)
 566     CFLAGS += -DHAVE_JITDUMP
 567   endif
 568 endif
 569
 570 ifeq ($(SRCARCH),powerpc)
 571   ifndef NO_DWARF
 572     CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
 573   endif
 574 endif
 575
 576 ifndef NO_LIBUNWIND
 577   have_libunwind :=
 578
 579   $(call feature_check,libunwind-x86)
 580   ifeq ($(feature-libunwind-x86), 1)
 581     $(call detected,CONFIG_LIBUNWIND_X86)
 582     CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
 583     LDFLAGS += -lunwind-x86
 584     EXTLIBS_LIBUNWIND += -lunwind-x86
 585     have_libunwind = 1
 586   endif
 587
 588   $(call feature_check,libunwind-aarch64)
 589   ifeq ($(feature-libunwind-aarch64), 1)
 590     $(call detected,CONFIG_LIBUNWIND_AARCH64)
 591     CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT
 592     LDFLAGS += -lunwind-aarch64
 593     EXTLIBS_LIBUNWIND += -lunwind-aarch64
 594     have_libunwind = 1
 595     $(call feature_check,libunwind-debug-frame-aarch64)
 596     ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
 597       msg := $(warning No debug_frame support found in libunwind-aarch64);
 598       CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
 599     endif
 600   endif
 601
 602   ifneq ($(feature-libunwind), 1)
 603     msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
 604     NO_LOCAL_LIBUNWIND := 1
 605   else
 606     have_libunwind := 1
 607     $(call detected,CONFIG_LOCAL_LIBUNWIND)
 608   endif
 609
 610   ifneq ($(have_libunwind), 1)
 611     NO_LIBUNWIND := 1
 612   endif
 613 else
 614   NO_LOCAL_LIBUNWIND := 1
 615 endif
 616
 617 ifndef NO_LIBBPF
 618   ifneq ($(feature-bpf), 1)
 619     msg := $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
 620     NO_LIBBPF := 1
 621   endif
 622 endif
 623
 624 dwarf-post-unwind := 1
 625 dwarf-post-unwind-text := BUG
 626
 627 # setup DWARF post unwinder
 628 ifdef NO_LIBUNWIND
 629   ifdef NO_LIBDW_DWARF_UNWIND
 630     msg := $(warning Disabling post unwind, no support found.);
 631     dwarf-post-unwind := 0
 632   else
 633     dwarf-post-unwind-text := libdw
 634     $(call detected,CONFIG_LIBDW_DWARF_UNWIND)
 635   endif
 636 else
 637   dwarf-post-unwind-text := libunwind
 638   $(call detected,CONFIG_LIBUNWIND)
 639   # Enable libunwind support by default.
 640   ifndef NO_LIBDW_DWARF_UNWIND
 641     NO_LIBDW_DWARF_UNWIND := 1
 642   endif
 643 endif
 644
 645 ifeq ($(dwarf-post-unwind),1)
 646   CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
 647   $(call detected,CONFIG_DWARF_UNWIND)
 648 else
 649   NO_DWARF_UNWIND := 1
 650 endif
 651
 652 ifndef NO_LOCAL_LIBUNWIND
 653   ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
 654     $(call feature_check,libunwind-debug-frame)
 655     ifneq ($(feature-libunwind-debug-frame), 1)
 656       msg := $(warning No debug_frame support found in libunwind);
 657       CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
 658     endif
 659   else
 660     # non-ARM has no dwarf_find_debug_frame() function:
 661     CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
 662   endif
 663   EXTLIBS += $(LIBUNWIND_LIBS)
 664   LDFLAGS += $(LIBUNWIND_LIBS)
 665 endif
 666 ifeq ($(findstring -static,${LDFLAGS}),-static)
 667   # gcc -static links libgcc_eh which contans piece of libunwind
 668   LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
 669 endif
 670
 671 ifndef NO_LIBUNWIND
 672   CFLAGS  += -DHAVE_LIBUNWIND_SUPPORT
 673   CFLAGS  += $(LIBUNWIND_CFLAGS)
 674   LDFLAGS += $(LIBUNWIND_LDFLAGS)
 675   EXTLIBS += $(EXTLIBS_LIBUNWIND)
 676 endif
 677
 678 ifeq ($(NO_SYSCALL_TABLE),0)
 679   $(call detected,CONFIG_TRACE)
 680 else
 681   ifndef NO_LIBAUDIT
 682     $(call feature_check,libaudit)
 683     ifneq ($(feature-libaudit), 1)
 684       msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
 685       NO_LIBAUDIT := 1
 686     else
 687       CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
 688       EXTLIBS += -laudit
 689       $(call detected,CONFIG_TRACE)
 690     endif
 691   endif
 692 endif
 693
 694 ifndef NO_LIBCRYPTO
 695   ifneq ($(feature-libcrypto), 1)
 696     msg := $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev);
 697     NO_LIBCRYPTO := 1
 698   else
 699     CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
 700     EXTLIBS += -lcrypto
 701     $(call detected,CONFIG_CRYPTO)
 702   endif
 703 endif
 704
 705 ifdef NO_NEWT
 706   NO_SLANG=1
 707 endif
 708
 709 ifndef NO_SLANG
 710   ifneq ($(feature-libslang), 1)
 711     ifneq ($(feature-libslang-include-subdir), 1)
 712       msg := $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev);
 713       NO_SLANG := 1
 714     else
 715       CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
 716     endif
 717   endif
 718   ifndef NO_SLANG
 719     # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
 720     CFLAGS += -DHAVE_SLANG_SUPPORT
 721     EXTLIBS += -lslang
 722     $(call detected,CONFIG_SLANG)
 723   endif
 724 endif
 725
 726 ifdef GTK2
 727   FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
 728   $(call feature_check,gtk2)
 729   ifneq ($(feature-gtk2), 1)
 730     msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
 731     NO_GTK2 := 1
 732   else
 733     $(call feature_check,gtk2-infobar)
 734     ifeq ($(feature-gtk2-infobar), 1)
 735       GTK_CFLAGS := -DHAVE_GTK_INFO_BAR_SUPPORT
 736     endif
 737     CFLAGS += -DHAVE_GTK2_SUPPORT
 738     GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk+-2.0 2>/dev/null)
 739     GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk+-2.0 2>/dev/null)
 740     EXTLIBS += -ldl
 741   endif
 742 endif
 743
 744 ifdef NO_LIBPERL
 745   CFLAGS += -DNO_LIBPERL
 746 else
 747   PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
 748   PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
 749   PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
 750   PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
 751   PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
 752   PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
 753   PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
 754   FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
 755
 756   ifneq ($(feature-libperl), 1)
 757     CFLAGS += -DNO_LIBPERL
 758     NO_LIBPERL := 1
 759     msg := $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev);
 760   else
 761     LDFLAGS += $(PERL_EMBED_LDFLAGS)
 762     EXTLIBS += $(PERL_EMBED_LIBADD)
 763     CFLAGS += -DHAVE_LIBPERL_SUPPORT
 764     $(call detected,CONFIG_LIBPERL)
 765   endif
 766 endif
 767
 768 ifeq ($(feature-timerfd), 1)
 769   CFLAGS += -DHAVE_TIMERFD_SUPPORT
 770 else
 771   msg := $(warning No timerfd support. Disables 'perf kvm stat live');
 772 endif
 773
 774 disable-python = $(eval $(disable-python_code))
 775 define disable-python_code
 776   CFLAGS += -DNO_LIBPYTHON
 777   $(warning $1)
 778   NO_LIBPYTHON := 1
 779 endef
 780
 781 ifdef NO_LIBPYTHON
 782   $(call disable-python,Python support disabled by user)
 783 else
 784
 785   ifndef PYTHON
 786     $(call disable-python,No python interpreter was found: disables Python support - please install python-devel/python-dev)
 787   else
 788     PYTHON_WORD := $(call shell-wordify,$(PYTHON))
 789
 790     ifndef PYTHON_CONFIG
 791       $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
 792     else
 793
 794       ifneq ($(feature-libpython), 1)
 795         $(call disable-python,No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev)
 796       else
 797          LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
 798          EXTLIBS += $(PYTHON_EMBED_LIBADD)
 799          LANG_BINDINGS += $(obj-perf)python/perf.so
 800          CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
 801          $(call detected,CONFIG_LIBPYTHON)
 802       endif
 803     endif
 804   endif
 805 endif
 806
 807 ifeq ($(feature-libbfd), 1)
 808   EXTLIBS += -lbfd -lopcodes
 809 else
 810   # we are on a system that requires -liberty and (maybe) -lz
 811   # to link against -lbfd; test each case individually here
 812
 813   # call all detections now so we get correct
 814   # status in VF output
 815   $(call feature_check,libbfd-liberty)
 816   $(call feature_check,libbfd-liberty-z)
 817
 818   ifeq ($(feature-libbfd-liberty), 1)
 819     EXTLIBS += -lbfd -lopcodes -liberty
 820     FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -ldl
 821   else
 822     ifeq ($(feature-libbfd-liberty-z), 1)
 823       EXTLIBS += -lbfd -lopcodes -liberty -lz
 824       FEATURE_CHECK_LDFLAGS-disassembler-four-args += -liberty -lz -ldl
 825     endif
 826   endif
 827   $(call feature_check,disassembler-four-args)
 828 endif
 829
 830 ifeq ($(feature-libbfd-buildid), 1)
 831   CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
 832 else
 833   msg := $(warning Old version of libbfd/binutils things like PE executable profiling will not be available);
 834 endif
 835
 836 ifdef NO_DEMANGLE
 837   CFLAGS += -DNO_DEMANGLE
 838 else
 839   ifdef HAVE_CPLUS_DEMANGLE_SUPPORT
 840     EXTLIBS += -liberty
 841   else
 842     ifeq ($(filter -liberty,$(EXTLIBS)),)
 843       $(call feature_check,cplus-demangle)
 844
 845       # we dont have neither HAVE_CPLUS_DEMANGLE_SUPPORT
 846       # or any of 'bfd iberty z' trinity
 847       ifeq ($(feature-cplus-demangle), 1)
 848         EXTLIBS += -liberty
 849       else
 850         msg := $(warning No bfd.h/libbfd found, please install binutils-dev[el]/zlib-static/libiberty-dev to gain symbol demangling)
 851         CFLAGS += -DNO_DEMANGLE
 852       endif
 853     endif
 854   endif
 855
 856   ifneq ($(filter -liberty,$(EXTLIBS)),)
 857     CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
 858   endif
 859 endif
 860
 861 ifneq ($(filter -lbfd,$(EXTLIBS)),)
 862   CFLAGS += -DHAVE_LIBBFD_SUPPORT
 863 endif
 864
 865 ifndef NO_ZLIB
 866   ifeq ($(feature-zlib), 1)
 867     CFLAGS += -DHAVE_ZLIB_SUPPORT
 868     EXTLIBS += -lz
 869     $(call detected,CONFIG_ZLIB)
 870   else
 871     NO_ZLIB := 1
 872   endif
 873 endif
 874
 875 ifndef NO_LZMA
 876   ifeq ($(feature-lzma), 1)
 877     CFLAGS += -DHAVE_LZMA_SUPPORT
 878     EXTLIBS += -llzma
 879     $(call detected,CONFIG_LZMA)
 880   else
 881     msg := $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev);
 882     NO_LZMA := 1
 883   endif
 884 endif
 885
 886 ifndef NO_LIBZSTD
 887   ifeq ($(feature-libzstd), 1)
 888     CFLAGS += -DHAVE_ZSTD_SUPPORT
 889     CFLAGS += $(LIBZSTD_CFLAGS)
 890     LDFLAGS += $(LIBZSTD_LDFLAGS)
 891     EXTLIBS += -lzstd
 892     $(call detected,CONFIG_ZSTD)
 893   else
 894     msg := $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR);
 895     NO_LIBZSTD := 1
 896   endif
 897 endif
 898
 899 ifndef NO_LIBCAP
 900   ifeq ($(feature-libcap), 1)
 901     CFLAGS += -DHAVE_LIBCAP_SUPPORT
 902     EXTLIBS += -lcap
 903     $(call detected,CONFIG_LIBCAP)
 904   else
 905     msg := $(warning No libcap found, disables capability support, please install libcap-devel/libcap-dev);
 906     NO_LIBCAP := 1
 907   endif
 908 endif
 909
 910 ifndef NO_BACKTRACE
 911   ifeq ($(feature-backtrace), 1)
 912     CFLAGS += -DHAVE_BACKTRACE_SUPPORT
 913   endif
 914 endif
 915
 916 ifndef NO_LIBNUMA
 917   ifeq ($(feature-libnuma), 0)
 918     msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev);
 919     NO_LIBNUMA := 1
 920   else
 921     ifeq ($(feature-numa_num_possible_cpus), 0)
 922       msg := $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8);
 923       NO_LIBNUMA := 1
 924     else
 925       CFLAGS += -DHAVE_LIBNUMA_SUPPORT
 926       EXTLIBS += -lnuma
 927       $(call detected,CONFIG_NUMA)
 928     endif
 929   endif
 930 endif
 931
 932 ifdef HAVE_KVM_STAT_SUPPORT
 933     CFLAGS += -DHAVE_KVM_STAT_SUPPORT
 934 endif
 935
 936 ifeq ($(feature-disassembler-four-args), 1)
 937     CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
 938 endif
 939
 940 ifeq (${IS_64_BIT}, 1)
 941   ifndef NO_PERF_READ_VDSO32
 942     $(call feature_check,compile-32)
 943     ifeq ($(feature-compile-32), 1)
 944       CFLAGS += -DHAVE_PERF_READ_VDSO32
 945     else
 946       NO_PERF_READ_VDSO32 := 1
 947     endif
 948   endif
 949   ifneq ($(SRCARCH), x86)
 950     NO_PERF_READ_VDSOX32 := 1
 951   endif
 952   ifndef NO_PERF_READ_VDSOX32
 953     $(call feature_check,compile-x32)
 954     ifeq ($(feature-compile-x32), 1)
 955       CFLAGS += -DHAVE_PERF_READ_VDSOX32
 956     else
 957       NO_PERF_READ_VDSOX32 := 1
 958     endif
 959   endif
 960 else
 961   NO_PERF_READ_VDSO32 := 1
 962   NO_PERF_READ_VDSOX32 := 1
 963 endif
 964
 965 ifndef NO_LIBBABELTRACE
 966   $(call feature_check,libbabeltrace)
 967   ifeq ($(feature-libbabeltrace), 1)
 968     CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
 969     LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
 970     EXTLIBS += -lbabeltrace-ctf
 971     $(call detected,CONFIG_LIBBABELTRACE)
 972   else
 973     msg := $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev);
 974   endif
 975 endif
 976
 977 ifndef NO_AUXTRACE
 978   ifeq ($(SRCARCH),x86)
 979     ifeq ($(feature-get_cpuid), 0)
 980       msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
 981       NO_AUXTRACE := 1
 982     endif
 983   endif
 984   ifndef NO_AUXTRACE
 985     $(call detected,CONFIG_AUXTRACE)
 986     CFLAGS += -DHAVE_AUXTRACE_SUPPORT
 987   endif
 988 endif
 989
 990 ifndef NO_JVMTI
 991   ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
 992     JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')
 993   else
 994     ifneq (,$(wildcard /usr/sbin/alternatives))
 995       JDIR=$(shell /usr/sbin/alternatives --display java | tail -1 | cut -d' ' -f 5 | sed -e 's%/jre/bin/java.%%g' -e 's%/bin/java.%%g')
 996     endif
 997   endif
 998   ifndef JDIR
 999     $(warning No alternatives command found, you need to set JDIR= to point to the root of your Java directory)
1000     NO_JVMTI := 1
1001   endif
1002 endif
1003
1004 ifndef NO_JVMTI
1005   FEATURE_CHECK_CFLAGS-jvmti := -I$(JDIR)/include -I$(JDIR)/include/linux
1006   $(call feature_check,jvmti)
1007   ifeq ($(feature-jvmti), 1)
1008     $(call detected_var,JDIR)
1009     ifndef NO_JVMTI_CMLR
1010       FEATURE_CHECK_CFLAGS-jvmti-cmlr := $(FEATURE_CHECK_CFLAGS-jvmti)
1011       $(call feature_check,jvmti-cmlr)
1012       ifeq ($(feature-jvmti-cmlr), 1)
1013         CFLAGS += -DHAVE_JVMTI_CMLR
1014       endif
1015     endif # NO_JVMTI_CMLR
1016   else
1017     $(warning No openjdk development package found, please install JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel)
1018     NO_JVMTI := 1
1019   endif
1020 endif
1021
1022 USE_CXX = 0
1023 USE_CLANGLLVM = 0
1024 ifdef LIBCLANGLLVM
1025   $(call feature_check,cxx)
1026   ifneq ($(feature-cxx), 1)
1027     msg := $(warning No g++ found, disable clang and llvm support. Please install g++)
1028   else
1029     $(call feature_check,llvm)
1030     $(call feature_check,llvm-version)
1031     ifneq ($(feature-llvm), 1)
1032       msg := $(warning No suitable libLLVM found, disabling builtin clang and LLVM support. Please install llvm-dev(el) (>= 3.9.0))
1033     else
1034       $(call feature_check,clang)
1035       ifneq ($(feature-clang), 1)
1036         msg := $(warning No suitable libclang found, disabling builtin clang and LLVM support. Please install libclang-dev(el) (>= 3.9.0))
1037       else
1038         CFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT
1039         CXXFLAGS += -DHAVE_LIBCLANGLLVM_SUPPORT -I$(shell $(LLVM_CONFIG) --includedir)
1040         $(call detected,CONFIG_CXX)
1041         $(call detected,CONFIG_CLANGLLVM)
1042         USE_CXX = 1
1043         USE_LLVM = 1
1044         USE_CLANG = 1
1045         ifneq ($(feature-llvm-version),1)
1046           msg := $(warning This version of LLVM is not tested. May cause build errors)
1047         endif
1048       endif
1049     endif
1050   endif
1051 endif
1052
1053 ifdef LIBPFM4
1054   $(call feature_check,libpfm4)
1055   ifeq ($(feature-libpfm4), 1)
1056     CFLAGS += -DHAVE_LIBPFM
1057     EXTLIBS += -lpfm
1058     ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
1059     $(call detected,CONFIG_LIBPFM4)
1060   else
1061     msg := $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev);
1062     NO_LIBPFM4 := 1
1063   endif
1064 endif
1065
1066 # Among the variables below, these:
1067 #   perfexecdir
1068 #   perf_include_dir
1069 #   perf_examples_dir
1070 #   template_dir
1071 #   mandir
1072 #   infodir
1073 #   htmldir
1074 #   ETC_PERFCONFIG (but not sysconfdir)
1075 # can be specified as a relative path some/where/else;
1076 # this is interpreted as relative to $(prefix) and "perf" at
1077 # runtime figures out where they are based on the path to the executable.
1078 # This can help installing the suite in a relocatable way.
1079
1080 # Make the path relative to DESTDIR, not to prefix
1081 ifndef DESTDIR
1082 prefix ?= $(HOME)
1083 endif
1084 bindir_relative = bin
1085 bindir = $(abspath $(prefix)/$(bindir_relative))
1086 mandir = share/man
1087 infodir = share/info
1088 perfexecdir = libexec/perf-core
1089 perf_include_dir = lib/perf/include
1090 perf_examples_dir = lib/perf/examples
1091 sharedir = $(prefix)/share
1092 template_dir = share/perf-core/templates
1093 STRACE_GROUPS_DIR = share/perf-core/strace/groups
1094 htmldir = share/doc/perf-doc
1095 tipdir = share/doc/perf-tip
1096 srcdir = $(srctree)/tools/perf
1097 ifeq ($(prefix),/usr)
1098 sysconfdir = /etc
1099 ETC_PERFCONFIG = $(sysconfdir)/perfconfig
1100 else
1101 sysconfdir = $(prefix)/etc
1102 ETC_PERFCONFIG = etc/perfconfig
1103 endif
1104 ifndef lib
1105 ifeq ($(SRCARCH)$(IS_64_BIT), x861)
1106 lib = lib64
1107 else
1108 lib = lib
1109 endif
1110 endif # lib
1111 libdir = $(prefix)/$(lib)
1112
1113 # Shell quote (do not use $(call) to accommodate ancient setups);
1114 ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
1115 STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
1116 DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
1117 bindir_SQ = $(subst ','\'',$(bindir))
1118 mandir_SQ = $(subst ','\'',$(mandir))
1119 infodir_SQ = $(subst ','\'',$(infodir))
1120 perfexecdir_SQ = $(subst ','\'',$(perfexecdir))
1121 perf_include_dir_SQ = $(subst ','\'',$(perf_include_dir))
1122 perf_examples_dir_SQ = $(subst ','\'',$(perf_examples_dir))
1123 template_dir_SQ = $(subst ','\'',$(template_dir))
1124 htmldir_SQ = $(subst ','\'',$(htmldir))
1125 tipdir_SQ = $(subst ','\'',$(tipdir))
1126 prefix_SQ = $(subst ','\'',$(prefix))
1127 sysconfdir_SQ = $(subst ','\'',$(sysconfdir))
1128 libdir_SQ = $(subst ','\'',$(libdir))
1129 srcdir_SQ = $(subst ','\'',$(srcdir))
1130
1131 ifneq ($(filter /%,$(firstword $(perfexecdir))),)
1132 perfexec_instdir = $(perfexecdir)
1133 perf_include_instdir = $(perf_include_dir)
1134 perf_examples_instdir = $(perf_examples_dir)
1135 STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
1136 tip_instdir = $(tipdir)
1137 else
1138 perfexec_instdir = $(prefix)/$(perfexecdir)
1139 perf_include_instdir = $(prefix)/$(perf_include_dir)
1140 perf_examples_instdir = $(prefix)/$(perf_examples_dir)
1141 STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
1142 tip_instdir = $(prefix)/$(tipdir)
1143 endif
1144 perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
1145 perf_include_instdir_SQ = $(subst ','\'',$(perf_include_instdir))
1146 perf_examples_instdir_SQ = $(subst ','\'',$(perf_examples_instdir))
1147 STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
1148 tip_instdir_SQ = $(subst ','\'',$(tip_instdir))
1149
1150 # If we install to $(HOME) we keep the traceevent default:
1151 # $(HOME)/.traceevent/plugins
1152 # Otherwise we install plugins into the global $(libdir).
1153 ifdef DESTDIR
1154 plugindir=$(libdir)/traceevent/plugins
1155 plugindir_SQ= $(subst ','\'',$(plugindir))
1156 endif
1157
1158 print_var = $(eval $(print_var_code)) $(info $(MSG))
1159 define print_var_code
1160     MSG = $(shell printf '...%30s: %s' $(1) $($(1)))
1161 endef
1162
1163 ifeq ($(VF),1)
1164   # Display EXTRA features which are detected manualy
1165   # from here with feature_check call and thus cannot
1166   # be partof global state output.
1167   $(foreach feat,$(FEATURE_TESTS_EXTRA),$(call feature_print_status,$(feat),))
1168   $(call print_var,prefix)
1169   $(call print_var,bindir)
1170   $(call print_var,libdir)
1171   $(call print_var,sysconfdir)
1172   $(call print_var,LIBUNWIND_DIR)
1173   $(call print_var,LIBDW_DIR)
1174   $(call print_var,JDIR)
1175
1176   ifeq ($(dwarf-post-unwind),1)
1177     $(call feature_print_text,"DWARF post unwind library", $(dwarf-post-unwind-text))
1178   endif
1179   $(info )
1180 endif
1181
1182 $(call detected_var,bindir_SQ)
1183 $(call detected_var,PYTHON_WORD)
1184 ifneq ($(OUTPUT),)
1185 $(call detected_var,OUTPUT)
1186 endif
1187 $(call detected_var,htmldir_SQ)
1188 $(call detected_var,infodir_SQ)
1189 $(call detected_var,mandir_SQ)
1190 $(call detected_var,ETC_PERFCONFIG_SQ)
1191 $(call detected_var,STRACE_GROUPS_DIR_SQ)
1192 $(call detected_var,prefix_SQ)
1193 $(call detected_var,perfexecdir_SQ)
1194 $(call detected_var,perf_include_dir_SQ)
1195 $(call detected_var,perf_examples_dir_SQ)
1196 $(call detected_var,tipdir_SQ)
1197 $(call detected_var,srcdir_SQ)
1198 $(call detected_var,LIBDIR)
1199 $(call detected_var,GTK_CFLAGS)
1200 $(call detected_var,PERL_EMBED_CCOPTS)
1201 $(call detected_var,PYTHON_EMBED_CCOPTS)