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################################################################################
#
# perf
#
################################################################################
LINUX_TOOLS += perf
PERF_DEPENDENCIES = host-flex host-bison
ifeq ($(KERNEL_ARCH),x86_64)
PERF_ARCH=x86
else
PERF_ARCH=$(KERNEL_ARCH)
endif
PERF_MAKE_FLAGS = \
$(LINUX_MAKE_FLAGS) \
JOBS=$(PARALLEL_JOBS) \
ARCH=$(PERF_ARCH) \
DESTDIR=$(TARGET_DIR) \
prefix=/usr \
WERROR=0 \
NO_LIBAUDIT=1 \
NO_NEWT=1 \
NO_GTK2=1 \
NO_LIBPERL=1 \
NO_LIBPYTHON=1 \
NO_LIBBIONIC=1
# We need to pass an argument to ld for setting the endianness when
# building it for MIPS architecture, otherwise the default one will
# always be used (which is big endian) and the compilation for little
# endian will always fail showing an error like this one:
# LD foo.o
# mips-linux-gnu-ld: foo.o: compiled for a little endian system and
# target is big endian
ifeq ($(BR2_mips)$(BR2_mips64),y)
PERF_MAKE_FLAGS += LD="$(TARGET_LD) -EB"
else ifeq ($(BR2_mipsel)$(BR2_mips64el),y)
PERF_MAKE_FLAGS += LD="$(TARGET_LD) -EL"
endif
# The call to backtrace() function fails for ARC, because for some
# reason the unwinder from libgcc returns early. Thus the usage of
# backtrace() should be disabled in perf explicitly: at build time
# backtrace() appears to be available, but it fails at runtime: the
# backtrace will contain only several functions from the top of stack,
# instead of the complete backtrace.
ifeq ($(BR2_arc),y)
PERF_MAKE_FLAGS += NO_BACKTRACE=1
endif
ifeq ($(BR2_PACKAGE_SLANG),y)
PERF_DEPENDENCIES += slang
else
PERF_MAKE_FLAGS += NO_SLANG=1
endif
ifeq ($(BR2_PACKAGE_LIBUNWIND),y)
PERF_DEPENDENCIES += libunwind
else
PERF_MAKE_FLAGS += NO_LIBUNWIND=1
endif
ifeq ($(BR2_PACKAGE_NUMACTL),y)
PERF_DEPENDENCIES += numactl
else
PERF_MAKE_FLAGS += NO_LIBNUMA=1
endif
ifeq ($(BR2_PACKAGE_ELFUTILS),y)
PERF_DEPENDENCIES += elfutils
else
PERF_MAKE_FLAGS += NO_LIBELF=1 NO_DWARF=1
endif
ifeq ($(BR2_PACKAGE_ZLIB),y)
PERF_DEPENDENCIES += zlib
else
PERF_MAKE_FLAGS += NO_ZLIB=1
endif
# lzma is provided by xz
ifeq ($(BR2_PACKAGE_XZ),y)
PERF_DEPENDENCIES += xz
else
PERF_MAKE_FLAGS += NO_LZMA=1
endif
# We really do not want to build the perf documentation, because it
# has stringent requirement on the documentation generation tools,
# like xmlto and asciidoc), which may be lagging behind on some
# distributions.
# We name it 'GNUmakefile' so that GNU make will use it instead of
# the existing 'Makefile'.
define PERF_DISABLE_DOCUMENTATION
if [ -f $(@D)/tools/perf/Documentation/Makefile ]; then \
printf "%%:
\t@:
" >$(@D)/tools/perf/Documentation/GNUmakefile; \
fi
endef
LINUX_POST_PATCH_HOOKS += PERF_DISABLE_DOCUMENTATION
# O must be redefined here to overwrite the one used by Buildroot for
# out of tree build. We build perf in $(@D)/tools/perf/ and not just
# $(@D) so that it isn't built in the root directory of the kernel
# sources.
define PERF_BUILD_CMDS
$(Q)if test ! -f $(@D)/tools/perf/Makefile ; then \
echo "Your kernel version is too old and does not have the perf tool." ; \
echo "At least kernel 2.6.31 must be used." ; \
exit 1 ; \
fi
$(Q)if test "$(BR2_PACKAGE_ELFUTILS)" = "" ; then \
if ! grep -q NO_LIBELF $(@D)/tools/perf/Makefile* ; then \
if ! test -r $(@D)/tools/perf/config/Makefile ; then \
echo "The perf tool in your kernel cannot be built without libelf." ; \
echo "Either upgrade your kernel to >= 3.7, or enable the elfutils package." ; \
exit 1 ; \
fi \
fi \
fi
$(TARGET_MAKE_ENV) $(MAKE1) $(PERF_MAKE_FLAGS) \
-C $(@D)/tools/perf O=$(@D)/tools/perf/
endef
# After installation, we remove the Perl and Python scripts from the
# target.
define PERF_INSTALL_TARGET_CMDS
$(TARGET_MAKE_ENV) $(MAKE1) $(PERF_MAKE_FLAGS) \
-C $(@D)/tools/perf O=$(@D)/tools/perf/ install
$(RM) -rf $(TARGET_DIR)/usr/libexec/perf-core/scripts/
$(RM) -rf $(TARGET_DIR)/usr/libexec/perf-core/tests/
endef
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