# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)include ../../scripts/Makefile.include ifeq ($(srctree),)srctree := $(patsubst %/,%,$(dir $(CURDIR)))srctree := $(patsubst %/,%,$(dir $(srctree)))srctree := $(patsubst %/,%,$(dir $(srctree)))endif BPF_DIR = $(srctree)/tools/lib/bpf ifneq ($(OUTPUT),) _OUTPUT := $(OUTPUT)else _OUTPUT := $(CURDIR)/endifBOOTSTRAP_OUTPUT := $(_OUTPUT)bootstrap/ LIBBPF_OUTPUT := $(_OUTPUT)libbpf/LIBBPF_DESTDIR := $(LIBBPF_OUTPUT)LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)includeLIBBPF_HDRS_DIR := $(LIBBPF_INCLUDE)/bpfLIBBPF := $(LIBBPF_OUTPUT)libbpf.a LIBBPF_BOOTSTRAP_OUTPUT := $(BOOTSTRAP_OUTPUT)libbpf/LIBBPF_BOOTSTRAP_DESTDIR := $(LIBBPF_BOOTSTRAP_OUTPUT)LIBBPF_BOOTSTRAP_INCLUDE := $(LIBBPF_BOOTSTRAP_DESTDIR)includeLIBBPF_BOOTSTRAP_HDRS_DIR := $(LIBBPF_BOOTSTRAP_INCLUDE)/bpfLIBBPF_BOOTSTRAP := $(LIBBPF_BOOTSTRAP_OUTPUT)libbpf.a # We need to copy hashmap.h, nlattr.h, relo_core.h and libbpf_internal.h# which are not otherwise exported by libbpf, but still required by bpftool.LIBBPF_INTERNAL_HDRS := $(addprefix $(LIBBPF_HDRS_DIR)/,hashmap.h nlattr.h relo_core.h libbpf_internal.h)LIBBPF_BOOTSTRAP_INTERNAL_HDRS := $(addprefix $(LIBBPF_BOOTSTRAP_HDRS_DIR)/,hashmap.h relo_core.h libbpf_internal.h) $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) $(LIBBPF_BOOTSTRAP_OUTPUT) $(LIBBPF_HDRS_DIR) $(LIBBPF_BOOTSTRAP_HDRS_DIR): $(QUIET_MKDIR)mkdir -p $@ $(LIBBPF): $(wildcard $(BPF_DIR)/*.[ch] $(BPF_DIR)/Makefile) | $(LIBBPF_OUTPUT) $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) \ DESTDIR=$(LIBBPF_DESTDIR:/=) prefix= $(LIBBPF) install_headers $(LIBBPF_INTERNAL_HDRS): $(LIBBPF_HDRS_DIR)/%.h: $(BPF_DIR)/%.h | $(LIBBPF_HDRS_DIR) $(call QUIET_INSTALL, $@) $(Q)install -m 644 -t $(LIBBPF_HDRS_DIR) $< $(LIBBPF_BOOTSTRAP): $(wildcard $(BPF_DIR)/*.[ch] $(BPF_DIR)/Makefile) | $(LIBBPF_BOOTSTRAP_OUTPUT) $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) \ DESTDIR=$(LIBBPF_BOOTSTRAP_DESTDIR:/=) prefix= \ ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ CFLAGS="$(LIBBPF_BOOTSTRAP_CFLAGS)" EXTRA_CFLAGS= $@ install_headers $(LIBBPF_BOOTSTRAP_INTERNAL_HDRS): $(LIBBPF_BOOTSTRAP_HDRS_DIR)/%.h: $(BPF_DIR)/%.h | $(LIBBPF_BOOTSTRAP_HDRS_DIR) $(call QUIET_INSTALL, $@) $(Q)install -m 644 -t $(LIBBPF_BOOTSTRAP_HDRS_DIR) $< $(LIBBPF)-clean: FORCE | $(LIBBPF_OUTPUT) $(call QUIET_CLEAN, libbpf) $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null $(LIBBPF_BOOTSTRAP)-clean: FORCE | $(LIBBPF_BOOTSTRAP_OUTPUT) $(call QUIET_CLEAN, libbpf-bootstrap) $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) clean >/dev/null prefix ?= /usr/localbash_compdir ?= /usr/share/bash-completion/completions CFLAGS += -O2CFLAGS += -WCFLAGS += -WallCFLAGS += -WextraCFLAGS += -Wformat-signednessCFLAGS += -Wno-unused-parameterCFLAGS += -Wno-missing-field-initializersCFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \ -I$(or $(OUTPUT),.) \ -I$(LIBBPF_INCLUDE) \ -I$(srctree)/kernel/bpf/ \ -I$(srctree)/tools/include \ -I$(srctree)/tools/include/uapiifneq ($(BPFTOOL_VERSION),)CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'endif # This must be done before appending EXTRA_CFLAGS to CFLAGS to avoid# including flags that are not applicable to the host compiler.HOST_CFLAGS := $(subst -I$(LIBBPF_INCLUDE),-I$(LIBBPF_BOOTSTRAP_INCLUDE),\ $(subst $(CLANG_CROSS_FLAGS),,$(CFLAGS)))HOST_CFLAGS += $(HOST_EXTRACFLAGS) ifneq ($(EXTRA_CFLAGS),)CFLAGS += $(EXTRA_CFLAGS)endififneq ($(EXTRA_LDFLAGS),)LDFLAGS += $(EXTRA_LDFLAGS)endif HOST_LDFLAGS := $(LDFLAGS) # Remove warnings for libbpf bootstrap buildLIBBPF_BOOTSTRAP_CFLAGS := $(filter-out -W -Wall -Wextra -Wformat%,$(HOST_CFLAGS)) INSTALL ?= installRM ?= rm -f FEATURE_USER = .bpftool # Skip optional dependencies: LLVM (JIT disasm), libbfd (fallback# disasm), libcrypto (program signing).SKIP_LLVM ?=SKIP_LIBBFD ?=SKIP_CRYPTO ?=ifneq ($(SKIP_CRYPTO),1) CRYPTO_LIBS := -lcryptoendif ifeq ($(MAKECMDGOALS),bootstrap)FEATURE_TESTS := libelf-zstdFEATURE_DISPLAY :=elseFEATURE_TESTS := clang-bpf-co-reFEATURE_TESTS += llvmFEATURE_TESTS += libcapFEATURE_TESTS += libbfdFEATURE_TESTS += libbfd-libertyFEATURE_TESTS += libbfd-liberty-zFEATURE_TESTS += disassembler-four-argsFEATURE_TESTS += disassembler-init-styledFEATURE_TESTS += libelf-zstd FEATURE_DISPLAY := clang-bpf-co-reFEATURE_DISPLAY += llvmFEATURE_DISPLAY += libcapFEATURE_DISPLAY += libbfdFEATURE_DISPLAY += libbfd-libertyFEATURE_DISPLAY += libbfd-liberty-zendif check_feat := 1NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstallifdef MAKECMDGOALSifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),) check_feat := 0endifendif ifeq ($(check_feat),1)ifeq ($(FEATURES_DUMP),)include $(srctree)/tools/build/Makefile.featureelseinclude $(FEATURES_DUMP)endifendif LIBS = $(LIBBPF) -lelf $(CRYPTO_LIBS) -lzLIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf $(CRYPTO_LIBS) -lz ifeq ($(feature-libelf-zstd),1)LIBS += -lzstdLIBS_BOOTSTRAP += -lzstdendif ifeq ($(feature-libcap), 1)CFLAGS += -DUSE_LIBCAPLIBS += -lcapendif include $(wildcard $(OUTPUT)*.d) all: $(OUTPUT)bpftool SRCS := $(wildcard *.c) ifeq ($(feature-llvm),1)ifneq ($(SKIP_LLVM),1)HAS_LLVM := 1endifendif ifeq ($(HAS_LLVM),1) CFLAGS += -DHAVE_LLVM_SUPPORT LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets # llvm-config always adds -D_GNU_SOURCE, however, it may already be in CFLAGS # (e.g. when bpftool build is called from selftests build as selftests # Makefile includes lib.mk which sets -D_GNU_SOURCE) which would cause # compilation error due to redefinition. Let's filter it out here. CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags)) LIBS += $(shell $(LLVM_CONFIG) --libs $(LLVM_CONFIG_LIB_COMPONENTS)) ifeq ($(shell $(LLVM_CONFIG) --shared-mode),static) LIBS += $(shell $(LLVM_CONFIG) --system-libs $(LLVM_CONFIG_LIB_COMPONENTS)) LIBS += -lstdc++ endif LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags)else ifneq ($(SKIP_LIBBFD),1) # Fall back on libbfd ifeq ($(feature-libbfd),1) LIBS += -lbfd -ldl -lopcodes else ifeq ($(feature-libbfd-liberty),1) LIBS += -lbfd -ldl -lopcodes -liberty else ifeq ($(feature-libbfd-liberty-z),1) LIBS += -lbfd -ldl -lopcodes -liberty -lz endif # If one of the above feature combinations is set, we support libbfd ifneq ($(filter -lbfd,$(LIBS)),) CFLAGS += -DHAVE_LIBBFD_SUPPORT # Libbfd interface changed over time, figure out what we need ifeq ($(feature-disassembler-four-args), 1) CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE endif ifeq ($(feature-disassembler-init-styled), 1) CFLAGS += -DDISASM_INIT_STYLED endif endif endif # SKIP_LIBBFDendififeq ($(filter -DHAVE_LLVM_SUPPORT -DHAVE_LIBBFD_SUPPORT,$(CFLAGS)),) # No support for JIT disassembly SRCS := $(filter-out jit_disasm.c,$(SRCS))endif ifeq ($(SKIP_CRYPTO),1) CFLAGS += -DBPFTOOL_WITHOUT_CRYPTO HOST_CFLAGS += -DBPFTOOL_WITHOUT_CRYPTO SRCS := $(filter-out sign.c,$(SRCS))endif BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o $(if $(CRYPTO_LIBS),sign.o))$(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP) OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o$(OBJS): $(LIBBPF) $(LIBBPF_INTERNAL_HDRS) VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ ../../../vmlinux \ /sys/kernel/btf/vmlinux \ /boot/vmlinux-$(shell uname -r)VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) bootstrap: $(BPFTOOL_BOOTSTRAP) ifneq ($(VMLINUX_BTF)$(VMLINUX_H),)ifeq ($(feature-clang-bpf-co-re),1) BUILD_BPF_SKELS := 1 ifeq ($(VMLINUX_H),)$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP) $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@else$(OUTPUT)vmlinux.h: $(VMLINUX_H) $(Q)cp "$(VMLINUX_H)" $@endif $(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF_BOOTSTRAP) $(QUIET_CLANG)$(CLANG) \ -Wno-microsoft-anon-tag \ -fms-extensions \ -I$(or $(OUTPUT),.) \ -I$(srctree)/tools/include/uapi/ \ -I$(LIBBPF_BOOTSTRAP_INCLUDE) \ -g -O2 -Wall -fno-stack-protector \ --target=bpf -c $< -o $@ $(Q)$(LLVM_STRIP) -g $@ $(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP) $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@ $(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h $(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h endifendif CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS) $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@ $(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF_BOOTSTRAP) $(QUIET_LINK)$(HOSTCC) $(HOST_CFLAGS) $(HOST_LDFLAGS) $(BOOTSTRAP_OBJS) $(LIBS_BOOTSTRAP) -o $@ $(OUTPUT)bpftool: $(OBJS) $(LIBBPF) $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) $(LIBS) -o $@ $(BOOTSTRAP_OUTPUT)%.o: %.c $(LIBBPF_BOOTSTRAP_INTERNAL_HDRS) | $(BOOTSTRAP_OUTPUT) $(QUIET_CC)$(HOSTCC) $(HOST_CFLAGS) -c -MMD $< -o $@ $(OUTPUT)%.o: %.c $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@ feature-detect-clean: $(call QUIET_CLEAN, feature-detect) $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-clean feature-detect-clean $(call QUIET_CLEAN, bpftool) $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d $(Q)$(RM) -- $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h $(Q)$(RM) -r -- $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) $(call QUIET_CLEAN, core-gen) $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool $(Q)$(RM) -r -- $(OUTPUT)feature/ install-bin: $(OUTPUT)bpftool $(call QUIET_INSTALL, bpftool) $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool install: install-bin $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir) $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir) uninstall: $(call QUIET_UNINST, bpftool) $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool doc: $(call descend,Documentation) doc-clean: $(call descend,Documentation,clean) doc-install: $(call descend,Documentation,install) doc-uninstall: $(call descend,Documentation,uninstall) FORCE: .SECONDARY:.PHONY: all FORCE bootstrap clean install-bin install uninstall.PHONY: doc doc-clean doc-install doc-uninstall.DEFAULT_GOAL := all # Delete partially updated (corrupted) files on error.DELETE_ON_ERROR:
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
include ../../scripts/Makefile.include
ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
endif
BPF_DIR = $(srctree)/tools/lib/bpf
ifneq ($(OUTPUT),)
_OUTPUT := $(OUTPUT)
else
_OUTPUT := $(CURDIR)/
endif
BOOTSTRAP_OUTPUT := $(_OUTPUT)bootstrap/
LIBBPF_OUTPUT := $(_OUTPUT)libbpf/
LIBBPF_DESTDIR := $(LIBBPF_OUTPUT)
LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)include
LIBBPF_HDRS_DIR := $(LIBBPF_INCLUDE)/bpf
LIBBPF := $(LIBBPF_OUTPUT)libbpf.a
LIBBPF_BOOTSTRAP_OUTPUT := $(BOOTSTRAP_OUTPUT)libbpf/
LIBBPF_BOOTSTRAP_DESTDIR := $(LIBBPF_BOOTSTRAP_OUTPUT)
LIBBPF_BOOTSTRAP_INCLUDE := $(LIBBPF_BOOTSTRAP_DESTDIR)include
LIBBPF_BOOTSTRAP_HDRS_DIR := $(LIBBPF_BOOTSTRAP_INCLUDE)/bpf
LIBBPF_BOOTSTRAP := $(LIBBPF_BOOTSTRAP_OUTPUT)libbpf.a
# We need to copy hashmap.h, nlattr.h, relo_core.h and libbpf_internal.h
# which are not otherwise exported by libbpf, but still required by bpftool.
LIBBPF_INTERNAL_HDRS := $(addprefix $(LIBBPF_HDRS_DIR)/,hashmap.h nlattr.h relo_core.h libbpf_internal.h)
LIBBPF_BOOTSTRAP_INTERNAL_HDRS := $(addprefix $(LIBBPF_BOOTSTRAP_HDRS_DIR)/,hashmap.h relo_core.h libbpf_internal.h)
$(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) $(LIBBPF_BOOTSTRAP_OUTPUT) $(LIBBPF_HDRS_DIR) $(LIBBPF_BOOTSTRAP_HDRS_DIR):
$(QUIET_MKDIR)mkdir -p $@
$(LIBBPF): $(wildcard $(BPF_DIR)/*.[ch] $(BPF_DIR)/Makefile) | $(LIBBPF_OUTPUT)
$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) \
DESTDIR=$(LIBBPF_DESTDIR:/=) prefix= $(LIBBPF) install_headers
$(LIBBPF_INTERNAL_HDRS): $(LIBBPF_HDRS_DIR)/%.h: $(BPF_DIR)/%.h | $(LIBBPF_HDRS_DIR)
$(call QUIET_INSTALL, $@)
$(Q)install -m 644 -t $(LIBBPF_HDRS_DIR) $<
$(LIBBPF_BOOTSTRAP): $(wildcard $(BPF_DIR)/*.[ch] $(BPF_DIR)/Makefile) | $(LIBBPF_BOOTSTRAP_OUTPUT)
$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) \
DESTDIR=$(LIBBPF_BOOTSTRAP_DESTDIR:/=) prefix= \
ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \
CFLAGS="$(LIBBPF_BOOTSTRAP_CFLAGS)" EXTRA_CFLAGS= $@ install_headers
$(LIBBPF_BOOTSTRAP_INTERNAL_HDRS): $(LIBBPF_BOOTSTRAP_HDRS_DIR)/%.h: $(BPF_DIR)/%.h | $(LIBBPF_BOOTSTRAP_HDRS_DIR)
$(call QUIET_INSTALL, $@)
$(Q)install -m 644 -t $(LIBBPF_BOOTSTRAP_HDRS_DIR) $<
$(LIBBPF)-clean: FORCE | $(LIBBPF_OUTPUT)
$(call QUIET_CLEAN, libbpf)
$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null
$(LIBBPF_BOOTSTRAP)-clean: FORCE | $(LIBBPF_BOOTSTRAP_OUTPUT)
$(call QUIET_CLEAN, libbpf-bootstrap)
$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) clean >/dev/null
prefix ?= /usr/local
bash_compdir ?= /usr/share/bash-completion/completions
CFLAGS += -O2
CFLAGS += -W
CFLAGS += -Wall
CFLAGS += -Wextra
CFLAGS += -Wformat-signedness
CFLAGS += -Wno-unused-parameter
CFLAGS += -Wno-missing-field-initializers
CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))
CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
-I$(or $(OUTPUT),.) \
-I$(LIBBPF_INCLUDE) \
-I$(srctree)/kernel/bpf/ \
-I$(srctree)/tools/include \
-I$(srctree)/tools/include/uapi
ifneq ($(BPFTOOL_VERSION),)
CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
endif
# This must be done before appending EXTRA_CFLAGS to CFLAGS to avoid
# including flags that are not applicable to the host compiler.
HOST_CFLAGS := $(subst -I$(LIBBPF_INCLUDE),-I$(LIBBPF_BOOTSTRAP_INCLUDE),\
$(subst $(CLANG_CROSS_FLAGS),,$(CFLAGS)))
HOST_CFLAGS += $(HOST_EXTRACFLAGS)
ifneq ($(EXTRA_CFLAGS),)
CFLAGS += $(EXTRA_CFLAGS)
endif
ifneq ($(EXTRA_LDFLAGS),)
LDFLAGS += $(EXTRA_LDFLAGS)
endif
HOST_LDFLAGS := $(LDFLAGS)
# Remove warnings for libbpf bootstrap build
LIBBPF_BOOTSTRAP_CFLAGS := $(filter-out -W -Wall -Wextra -Wformat%,$(HOST_CFLAGS))
INSTALL ?= install
RM ?= rm -f
FEATURE_USER = .bpftool
# Skip optional dependencies: LLVM (JIT disasm), libbfd (fallback
# disasm), libcrypto (program signing).
SKIP_LLVM ?=
SKIP_LIBBFD ?=
SKIP_CRYPTO ?=
ifneq ($(SKIP_CRYPTO),1)
CRYPTO_LIBS := -lcrypto
endif
ifeq ($(MAKECMDGOALS),bootstrap)
FEATURE_TESTS := libelf-zstd
FEATURE_DISPLAY :=
else
FEATURE_TESTS := clang-bpf-co-re
FEATURE_TESTS += llvm
FEATURE_TESTS += libcap
FEATURE_TESTS += libbfd
FEATURE_TESTS += libbfd-liberty
FEATURE_TESTS += libbfd-liberty-z
FEATURE_TESTS += disassembler-four-args
FEATURE_TESTS += disassembler-init-styled
FEATURE_TESTS += libelf-zstd
FEATURE_DISPLAY := clang-bpf-co-re
FEATURE_DISPLAY += llvm
FEATURE_DISPLAY += libcap
FEATURE_DISPLAY += libbfd
FEATURE_DISPLAY += libbfd-liberty
FEATURE_DISPLAY += libbfd-liberty-z
endif
check_feat := 1
NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
ifdef MAKECMDGOALS
ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
check_feat := 0
endif
endif
ifeq ($(check_feat),1)
ifeq ($(FEATURES_DUMP),)
include $(srctree)/tools/build/Makefile.feature
else
include $(FEATURES_DUMP)
endif
endif
LIBS = $(LIBBPF) -lelf $(CRYPTO_LIBS) -lz
LIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf $(CRYPTO_LIBS) -lz
ifeq ($(feature-libelf-zstd),1)
LIBS += -lzstd
LIBS_BOOTSTRAP += -lzstd
endif
ifeq ($(feature-libcap), 1)
CFLAGS += -DUSE_LIBCAP
LIBS += -lcap
endif
include $(wildcard $(OUTPUT)*.d)
all: $(OUTPUT)bpftool
SRCS := $(wildcard *.c)
ifeq ($(feature-llvm),1)
ifneq ($(SKIP_LLVM),1)
HAS_LLVM := 1
endif
endif
ifeq ($(HAS_LLVM),1)
CFLAGS += -DHAVE_LLVM_SUPPORT
LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets
# llvm-config always adds -D_GNU_SOURCE, however, it may already be in CFLAGS
# (e.g. when bpftool build is called from selftests build as selftests
# Makefile includes lib.mk which sets -D_GNU_SOURCE) which would cause
# compilation error due to redefinition. Let's filter it out here.
CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags))
LIBS += $(shell $(LLVM_CONFIG) --libs $(LLVM_CONFIG_LIB_COMPONENTS))
ifeq ($(shell $(LLVM_CONFIG) --shared-mode),static)
LIBS += $(shell $(LLVM_CONFIG) --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))
LIBS += -lstdc++
endif
LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags)
else
ifneq ($(SKIP_LIBBFD),1)
# Fall back on libbfd
ifeq ($(feature-libbfd),1)
LIBS += -lbfd -ldl -lopcodes
else ifeq ($(feature-libbfd-liberty),1)
LIBS += -lbfd -ldl -lopcodes -liberty
else ifeq ($(feature-libbfd-liberty-z),1)
LIBS += -lbfd -ldl -lopcodes -liberty -lz
endif
# If one of the above feature combinations is set, we support libbfd
ifneq ($(filter -lbfd,$(LIBS)),)
CFLAGS += -DHAVE_LIBBFD_SUPPORT
# Libbfd interface changed over time, figure out what we need
ifeq ($(feature-disassembler-four-args), 1)
CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
endif
ifeq ($(feature-disassembler-init-styled), 1)
CFLAGS += -DDISASM_INIT_STYLED
endif
endif
endif # SKIP_LIBBFD
endif
ifeq ($(filter -DHAVE_LLVM_SUPPORT -DHAVE_LIBBFD_SUPPORT,$(CFLAGS)),)
# No support for JIT disassembly
SRCS := $(filter-out jit_disasm.c,$(SRCS))
endif
ifeq ($(SKIP_CRYPTO),1)
CFLAGS += -DBPFTOOL_WITHOUT_CRYPTO
HOST_CFLAGS += -DBPFTOOL_WITHOUT_CRYPTO
SRCS := $(filter-out sign.c,$(SRCS))
endif
BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool
BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o $(if $(CRYPTO_LIBS),sign.o))
$(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP)
OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
$(OBJS): $(LIBBPF) $(LIBBPF_INTERNAL_HDRS)
VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
$(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
../../../vmlinux \
/sys/kernel/btf/vmlinux \
/boot/vmlinux-$(shell uname -r)
VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
bootstrap: $(BPFTOOL_BOOTSTRAP)
ifneq ($(VMLINUX_BTF)$(VMLINUX_H),)
ifeq ($(feature-clang-bpf-co-re),1)
BUILD_BPF_SKELS := 1
ifeq ($(VMLINUX_H),)
$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
$(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@
else
$(OUTPUT)vmlinux.h: $(VMLINUX_H)
$(Q)cp "$(VMLINUX_H)" $@
endif
$(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF_BOOTSTRAP)
$(QUIET_CLANG)$(CLANG) \
-Wno-microsoft-anon-tag \
-fms-extensions \
-I$(or $(OUTPUT),.) \
-I$(srctree)/tools/include/uapi/ \
-I$(LIBBPF_BOOTSTRAP_INCLUDE) \
-g -O2 -Wall -fno-stack-protector \
--target=bpf -c $< -o $@
$(Q)$(LLVM_STRIP) -g $@
$(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)
$(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@
$(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h
$(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h
endif
endif
CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS)
$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
$(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@
$(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF_BOOTSTRAP)
$(QUIET_LINK)$(HOSTCC) $(HOST_CFLAGS) $(HOST_LDFLAGS) $(BOOTSTRAP_OBJS) $(LIBS_BOOTSTRAP) -o $@
$(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) $(LIBS) -o $@
$(BOOTSTRAP_OUTPUT)%.o: %.c $(LIBBPF_BOOTSTRAP_INTERNAL_HDRS) | $(BOOTSTRAP_OUTPUT)
$(QUIET_CC)$(HOSTCC) $(HOST_CFLAGS) -c -MMD $< -o $@
$(OUTPUT)%.o: %.c
$(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@
feature-detect-clean:
$(call QUIET_CLEAN, feature-detect)
$(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null
clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-clean feature-detect-clean
$(call QUIET_CLEAN, bpftool)
$(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d
$(Q)$(RM) -- $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h
$(Q)$(RM) -r -- $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT)
$(call QUIET_CLEAN, core-gen)
$(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool
$(Q)$(RM) -r -- $(OUTPUT)feature/
install-bin: $(OUTPUT)bpftool
$(call QUIET_INSTALL, bpftool)
$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin
$(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool
install: install-bin
$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)
$(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)
uninstall:
$(call QUIET_UNINST, bpftool)
$(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
$(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
doc:
$(call descend,Documentation)
doc-clean:
$(call descend,Documentation,clean)
doc-install:
$(call descend,Documentation,install)
doc-uninstall:
$(call descend,Documentation,uninstall)
FORCE:
.SECONDARY:
.PHONY: all FORCE bootstrap clean install-bin install uninstall
.PHONY: doc doc-clean doc-install doc-uninstall
.DEFAULT_GOAL := all
# Delete partially updated (corrupted) files on error
.DELETE_ON_ERROR: