| # 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: |