path: root/tools/perf/config/Makefile

ifeq ($(src-perf),)
src-perf := $(srctree)/tools/perf
endif

ifeq ($(obj-perf),)
obj-perf := $(OUTPUT)
endif

ifneq ($(obj-perf),)
obj-perf := $(abspath $(obj-perf))/
endif

LIB_INCLUDE := $(srctree)/tools/lib/
CFLAGS := $(EXTRA_CFLAGS) $(EXTRA_WARNINGS)

include $(src-perf)/config/Makefile.arch

NO_PERF_REGS := 1

# Additional ARCH settings for x86
ifeq ($(ARCH),x86)
  ifeq (${IS_X86_64}, 1)
    CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT
    ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
    LIBUNWIND_LIBS = -lunwind -lunwind-x86_64
  else
    LIBUNWIND_LIBS = -lunwind -lunwind-x86
  endif
  NO_PERF_REGS := 0
endif

ifeq ($(ARCH),arm)
  NO_PERF_REGS := 0
  LIBUNWIND_LIBS = -lunwind -lunwind-arm
endif

ifeq ($(ARCH),arm64)
  NO_PERF_REGS := 0
  LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
endif

# So far there's only x86 and arm libdw unwind support merged in perf.
# Disable it on all other architectures in case libdw unwind
# support is detected in system. Add supported architectures
# to the check.
ifneq ($(ARCH),$(filter $(ARCH),x86 arm))
  NO_LIBDW_DWARF_UNWIND := 1
endif

ifeq ($(LIBUNWIND_LIBS),)
  NO_LIBUNWIND := 1
else
  #
  # For linking with debug library, run like:
  #
  #   make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
  #
  ifdef LIBUNWIND_DIR
    LIBUNWIND_CFLAGS  = -I$(LIBUNWIND_DIR)/include
    LIBUNWIND_LDFLAGS = -L$(LIBUNWIND_DIR)/lib
  endif
  LIBUNWIND_LDFLAGS += $(LIBUNWIND_LIBS)

  # Set per-feature check compilation flags
  FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
  FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS)
  FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
  FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS)
endif

ifeq ($(NO_PERF_REGS),0)
  CFLAGS += -DHAVE_PERF_REGS_SUPPORT
endif

ifndef NO_LIBELF
  # for linking with debug library, run like:
  # make DEBUG=1 LIBDW_DIR=/opt/libdw/
  ifdef LIBDW_DIR
    LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
    LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
  endif
  FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
  FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) -ldw
endif

# include ARCH specific config
-include $(src-perf)/arch/$(ARCH)/Makefile

include $(src-perf)/config/utilities.mak

ifeq ($(call get-executable,$(FLEX)),)
  dummy := $(error Error: $(FLEX) is missing on this system, please install it)
endif

ifeq ($(call get-executable,$(BISON)),)
  dummy := $(error Error: $(BISON) is missing on this system, please install it)
endif

# Treat warnings as errors unless directed not to
ifneq ($(WERROR),0)
  CFLAGS += -Werror
endif

ifndef DEBUG
  DEBUG := 0
endif

ifeq ($(DEBUG),0)
  CFLAGS += -O6
endif

ifdef PARSER_DEBUG
  PARSER_DEBUG_BISON := -t
  PARSER_DEBUG_FLEX  := -d
  CFLAGS             += -DPARSER_DEBUG
endif

CFLAGS += -fno-omit-frame-pointer
CFLAGS += -ggdb3
CFLAGS += -funwind-tables
CFLAGS += -Wall
CFLAGS += -Wextra
CFLAGS += -std=gnu99

# Enforce a non-executable stack, as we may regress (again) in the future by
# adding assembler files missing the .GNU-stack linker note.
LDFLAGS += -Wl,-z,noexecstack

EXTLIBS = -lelf -lpthread -lrt -lm -ldl

ifneq ($(OUTPUT),)
  OUTPUT_FEATURES = $(OUTPUT)config/feature-checks/
  $(shell mkdir -p $(OUTPUT_FEATURES))
endif

feature_check = $(eval $(feature_check_code))
define feature_check_code
  feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C config/feature-checks test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
endef

feature_set = $(eval $(feature_set_code))
define feature_set_code
  feature-$(1) := 1
endef

#
# Build the feature check binaries in parallel, ignore errors, ignore return value and suppress output:
#

#
# Note that this is not a complete list of all feature tests, just
# those that are typically built on a fully configured system.
#
# [ Feature tests not mentioned here have to be built explicitly in
#   the rule that uses them - an example for that is the 'bionic'
#   feature check. ]
#
CORE_FEATURE_TESTS =			\
	backtrace			\
	dwarf				\
	fortify-source			\
	glibc				\
	gtk2				\
	gtk2-infobar			\
	libaudit			\
	libbfd				\
	libelf				\
	libelf-getphdrnum		\
	libelf-mmap			\
	libnuma				\
	libperl				\
	libpython			\
	libpython-version		\
	libslang			\
	libunwind			\
	stackprotector-all		\
	timerfd				\
	libdw-dwarf-unwind

LIB_FEATURE_TESTS =			\
	dwarf				\
	glibc				\
	gtk2				\
	libaudit			\
	libbfd				\
	libelf				\
	libnuma				\
	libperl				\
	libpython			\
	libslang			\
	libunwind			\
	libdw-dwarf-unwind

VF_FEATURE_TESTS =			\
	backtrace			\
	fortify-source			\
	gtk2-infobar			\
	libelf-getphdrnum		\
	libelf-mmap			\
	libpython-version		\
	stackprotector-all		\
	timerfd				\
	libunwind-debug-frame		\
	bionic				\
	liberty				\
	liberty-z			\
	cplus-demangle

# Set FEATURE_CHECK_(C|LD)FLAGS-all for all CORE_FEATURE_TESTS features.
# If in the future we need per-feature checks/flags for features not
# mentioned in this list we need to refactor this ;-).
set_test_all_flags = $(eval $(set_test_all_flags_code))
define set_test_all_flags_code
  FEATURE_CHECK_CFLAGS-all  += $(FEATURE_CHECK_CFLAGS-$(1))
  FEATURE_CHECK_LDFLAGS-all += $(FEATURE_CHECK_LDFLAGS-$(1))
endef

$(foreach feat,$(CORE_FEATURE_TESTS),$(call set_test_all_flags,$(feat)))

#
# Special fast-path for the 'all features are available' case:
#
$(call feature_check,all,$(MSG))

#
# Just in case the build freshly failed, make sure we print the
# feature matrix:
#
ifeq ($(feature-all), 1)
  #
  # test-all.c passed - just set all the core feature flags to 1:
  #
  $(foreach feat,$(CORE_FEATURE_TESTS),$(call feature_set,$(feat)))
else
  $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS)" LDFLAGS=$(LDFLAGS) -i -j -C config/feature-checks $(addsuffix .bin,$(CORE_FEATURE_TESTS)) >/dev/null 2>&1)
  $(foreach feat,$(CORE_FEATURE_TESTS),$(call feature_check,$(feat)))
endif

ifeq ($(feature-stackprotector-all), 1)
  CFLAGS += -fstack-protector-all
endif

ifeq ($(DEBUG),0)
  ifeq ($(feature-fortify-source), 1)
    CFLAGS += -D_FORTIFY_SOURCE=2
  endif
endif

CFLAGS += -I$(src-perf)/util/include
CFLAGS += -I$(src-perf)/arch/$(ARCH)/include
CFLAGS += -I$(srctree)/tools/include/
CFLAGS += -I$(srctree)/arch/$(ARCH)/include/uapi
CFLAGS += -I$(srctree)/arch/$(ARCH)/include
CFLAGS += -I$(srctree)/include/uapi
CFLAGS += -I$(srctree)/include

# $(obj-perf)      for generated common-cmds.h
# $(obj-perf)/util for generated bison/flex headers
ifneq ($(OUTPUT),)
CFLAGS += -I$(obj-perf)/util
CFLAGS += -I$(obj-perf)
endif

CFLAGS += -I$(src-perf)/util
CFLAGS += -I$(src-perf)
CFLAGS += -I$(LIB_INCLUDE)

CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE

ifndef NO_BIONIC
  $(call feature_check,bionic)
  ifeq ($(feature-bionic), 1)
    BIONIC := 1
    EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
    EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
  endif
endif

ifdef NO_LIBELF
  NO_DWARF := 1
  NO_DEMANGLE := 1
  NO_LIBUNWIND := 1
  NO_LIBDW_DWARF_UNWIND := 1
else
  ifeq ($(feature-libelf), 0)
    ifeq ($(feature-glibc), 1)
      LIBC_SUPPORT := 1
    endif
    ifeq ($(BIONIC),1)
      LIBC_SUPPORT := 1
    endif
    ifeq ($(LIBC_SUPPORT),1)
      msg := $(warning No libelf found, disables 'probe' tool, please install elfutils-libelf-devel/libelf-dev);

      NO_LIBELF := 1
      NO_DWARF := 1
      NO_DEMANGLE := 1
      NO_LIBUNWIND := 1
      NO_LIBDW_DWARF_UNWIND := 1
    else
      ifneq ($(filter s% -static%,$(LDFLAGS),),)
        msg := $(error No static glibc found, please install glibc-static);
      else
        msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
      endif
    endif
  else
    ifndef NO_LIBDW_DWARF_UNWIND
      ifneq ($(feature-libdw-dwarf-unwind),1)
        NO_LIBDW_DWARF_UNWIND := 1
        msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
      endif
    endif
    ifneq ($(feature-dwarf), 1)
      msg := $(warning No libdw.h found or old libdw.h found or