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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2include ../../scripts/Makefile.include3 4ifeq ($(srctree),)5srctree := $(patsubst %/,%,$(dir $(CURDIR)))6srctree := $(patsubst %/,%,$(dir $(srctree)))7srctree := $(patsubst %/,%,$(dir $(srctree)))8endif9 10ifeq ($(V),1)11 Q =12else13 Q = @14endif15 16BPF_DIR = $(srctree)/tools/lib/bpf17 18ifneq ($(OUTPUT),)19 _OUTPUT := $(OUTPUT)20else21 _OUTPUT := $(CURDIR)/22endif23BOOTSTRAP_OUTPUT := $(_OUTPUT)bootstrap/24 25LIBBPF_OUTPUT := $(_OUTPUT)libbpf/26LIBBPF_DESTDIR := $(LIBBPF_OUTPUT)27LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)include28LIBBPF_HDRS_DIR := $(LIBBPF_INCLUDE)/bpf29LIBBPF := $(LIBBPF_OUTPUT)libbpf.a30 31LIBBPF_BOOTSTRAP_OUTPUT := $(BOOTSTRAP_OUTPUT)libbpf/32LIBBPF_BOOTSTRAP_DESTDIR := $(LIBBPF_BOOTSTRAP_OUTPUT)33LIBBPF_BOOTSTRAP_INCLUDE := $(LIBBPF_BOOTSTRAP_DESTDIR)include34LIBBPF_BOOTSTRAP_HDRS_DIR := $(LIBBPF_BOOTSTRAP_INCLUDE)/bpf35LIBBPF_BOOTSTRAP := $(LIBBPF_BOOTSTRAP_OUTPUT)libbpf.a36 37# We need to copy hashmap.h, nlattr.h, relo_core.h and libbpf_internal.h38# which are not otherwise exported by libbpf, but still required by bpftool.39LIBBPF_INTERNAL_HDRS := $(addprefix $(LIBBPF_HDRS_DIR)/,hashmap.h nlattr.h relo_core.h libbpf_internal.h)40LIBBPF_BOOTSTRAP_INTERNAL_HDRS := $(addprefix $(LIBBPF_BOOTSTRAP_HDRS_DIR)/,hashmap.h relo_core.h libbpf_internal.h)41 42$(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) $(LIBBPF_BOOTSTRAP_OUTPUT) $(LIBBPF_HDRS_DIR) $(LIBBPF_BOOTSTRAP_HDRS_DIR):43 $(QUIET_MKDIR)mkdir -p $@44 45$(LIBBPF): $(wildcard $(BPF_DIR)/*.[ch] $(BPF_DIR)/Makefile) | $(LIBBPF_OUTPUT)46 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) \47 DESTDIR=$(LIBBPF_DESTDIR:/=) prefix= $(LIBBPF) install_headers48 49$(LIBBPF_INTERNAL_HDRS): $(LIBBPF_HDRS_DIR)/%.h: $(BPF_DIR)/%.h | $(LIBBPF_HDRS_DIR)50 $(call QUIET_INSTALL, $@)51 $(Q)install -m 644 -t $(LIBBPF_HDRS_DIR) $<52 53$(LIBBPF_BOOTSTRAP): $(wildcard $(BPF_DIR)/*.[ch] $(BPF_DIR)/Makefile) | $(LIBBPF_BOOTSTRAP_OUTPUT)54 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) \55 DESTDIR=$(LIBBPF_BOOTSTRAP_DESTDIR:/=) prefix= \56 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" $@ install_headers57 58$(LIBBPF_BOOTSTRAP_INTERNAL_HDRS): $(LIBBPF_BOOTSTRAP_HDRS_DIR)/%.h: $(BPF_DIR)/%.h | $(LIBBPF_BOOTSTRAP_HDRS_DIR)59 $(call QUIET_INSTALL, $@)60 $(Q)install -m 644 -t $(LIBBPF_BOOTSTRAP_HDRS_DIR) $<61 62$(LIBBPF)-clean: FORCE | $(LIBBPF_OUTPUT)63 $(call QUIET_CLEAN, libbpf)64 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null65 66$(LIBBPF_BOOTSTRAP)-clean: FORCE | $(LIBBPF_BOOTSTRAP_OUTPUT)67 $(call QUIET_CLEAN, libbpf-bootstrap)68 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) clean >/dev/null69 70prefix ?= /usr/local71bash_compdir ?= /usr/share/bash-completion/completions72 73CFLAGS += -O274CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers75CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))76CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \77 -I$(or $(OUTPUT),.) \78 -I$(LIBBPF_INCLUDE) \79 -I$(srctree)/kernel/bpf/ \80 -I$(srctree)/tools/include \81 -I$(srctree)/tools/include/uapi82ifneq ($(BPFTOOL_VERSION),)83CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'84endif85ifneq ($(EXTRA_CFLAGS),)86CFLAGS += $(EXTRA_CFLAGS)87endif88ifneq ($(EXTRA_LDFLAGS),)89LDFLAGS += $(EXTRA_LDFLAGS)90endif91 92HOST_CFLAGS := $(subst -I$(LIBBPF_INCLUDE),-I$(LIBBPF_BOOTSTRAP_INCLUDE),\93 $(subst $(CLANG_CROSS_FLAGS),,$(CFLAGS)))94HOST_LDFLAGS := $(LDFLAGS)95 96INSTALL ?= install97RM ?= rm -f98 99FEATURE_USER = .bpftool100 101FEATURE_TESTS := clang-bpf-co-re102FEATURE_TESTS += llvm103FEATURE_TESTS += libcap104FEATURE_TESTS += libbfd105FEATURE_TESTS += libbfd-liberty106FEATURE_TESTS += libbfd-liberty-z107FEATURE_TESTS += disassembler-four-args108FEATURE_TESTS += disassembler-init-styled109 110FEATURE_DISPLAY := clang-bpf-co-re111FEATURE_DISPLAY += llvm112FEATURE_DISPLAY += libcap113FEATURE_DISPLAY += libbfd114FEATURE_DISPLAY += libbfd-liberty115FEATURE_DISPLAY += libbfd-liberty-z116 117check_feat := 1118NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall119ifdef MAKECMDGOALS120ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)121 check_feat := 0122endif123endif124 125ifeq ($(check_feat),1)126ifeq ($(FEATURES_DUMP),)127include $(srctree)/tools/build/Makefile.feature128else129include $(FEATURES_DUMP)130endif131endif132 133LIBS = $(LIBBPF) -lelf -lz134LIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf -lz135ifeq ($(feature-libcap), 1)136CFLAGS += -DUSE_LIBCAP137LIBS += -lcap138endif139 140include $(wildcard $(OUTPUT)*.d)141 142all: $(OUTPUT)bpftool143 144SRCS := $(wildcard *.c)145 146ifeq ($(feature-llvm),1)147 # If LLVM is available, use it for JIT disassembly148 CFLAGS += -DHAVE_LLVM_SUPPORT149 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets150 CFLAGS += $(shell $(LLVM_CONFIG) --cflags)151 LIBS += $(shell $(LLVM_CONFIG) --libs $(LLVM_CONFIG_LIB_COMPONENTS))152 ifeq ($(shell $(LLVM_CONFIG) --shared-mode),static)153 LIBS += $(shell $(LLVM_CONFIG) --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))154 LIBS += -lstdc++155 endif156 LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags)157else158 # Fall back on libbfd159 ifeq ($(feature-libbfd),1)160 LIBS += -lbfd -ldl -lopcodes161 else ifeq ($(feature-libbfd-liberty),1)162 LIBS += -lbfd -ldl -lopcodes -liberty163 else ifeq ($(feature-libbfd-liberty-z),1)164 LIBS += -lbfd -ldl -lopcodes -liberty -lz165 endif166 167 # If one of the above feature combinations is set, we support libbfd168 ifneq ($(filter -lbfd,$(LIBS)),)169 CFLAGS += -DHAVE_LIBBFD_SUPPORT170 171 # Libbfd interface changed over time, figure out what we need172 ifeq ($(feature-disassembler-four-args), 1)173 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE174 endif175 ifeq ($(feature-disassembler-init-styled), 1)176 CFLAGS += -DDISASM_INIT_STYLED177 endif178 endif179endif180ifeq ($(filter -DHAVE_LLVM_SUPPORT -DHAVE_LIBBFD_SUPPORT,$(CFLAGS)),)181 # No support for JIT disassembly182 SRCS := $(filter-out jit_disasm.c,$(SRCS))183endif184 185BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool186 187BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o)188$(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP)189 190OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o191$(OBJS): $(LIBBPF) $(LIBBPF_INTERNAL_HDRS)192 193VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \194 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \195 ../../../vmlinux \196 /sys/kernel/btf/vmlinux \197 /boot/vmlinux-$(shell uname -r)198VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))199 200bootstrap: $(BPFTOOL_BOOTSTRAP)201 202ifneq ($(VMLINUX_BTF)$(VMLINUX_H),)203ifeq ($(feature-clang-bpf-co-re),1)204 205BUILD_BPF_SKELS := 1206 207ifeq ($(VMLINUX_H),)208$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)209 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@210else211$(OUTPUT)vmlinux.h: $(VMLINUX_H)212 $(Q)cp "$(VMLINUX_H)" $@213endif214 215$(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF_BOOTSTRAP)216 $(QUIET_CLANG)$(CLANG) \217 -I$(or $(OUTPUT),.) \218 -I$(srctree)/tools/include/uapi/ \219 -I$(LIBBPF_BOOTSTRAP_INCLUDE) \220 -g -O2 -Wall -fno-stack-protector \221 --target=bpf -c $< -o $@222 $(Q)$(LLVM_STRIP) -g $@223 224$(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)225 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@226 227$(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h228 229$(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h230 231endif232endif233 234CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS)235 236$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c237 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@238 239$(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF_BOOTSTRAP)240 $(QUIET_LINK)$(HOSTCC) $(HOST_CFLAGS) $(HOST_LDFLAGS) $(BOOTSTRAP_OBJS) $(LIBS_BOOTSTRAP) -o $@241 242$(OUTPUT)bpftool: $(OBJS) $(LIBBPF)243 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) $(LIBS) -o $@244 245$(BOOTSTRAP_OUTPUT)%.o: %.c $(LIBBPF_BOOTSTRAP_INTERNAL_HDRS) | $(BOOTSTRAP_OUTPUT)246 $(QUIET_CC)$(HOSTCC) $(HOST_CFLAGS) -c -MMD $< -o $@247 248$(OUTPUT)%.o: %.c249 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@250 251feature-detect-clean:252 $(call QUIET_CLEAN, feature-detect)253 $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null254 255clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-clean feature-detect-clean256 $(call QUIET_CLEAN, bpftool)257 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d258 $(Q)$(RM) -- $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h259 $(Q)$(RM) -r -- $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT)260 $(call QUIET_CLEAN, core-gen)261 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool262 $(Q)$(RM) -r -- $(OUTPUT)feature/263 264install-bin: $(OUTPUT)bpftool265 $(call QUIET_INSTALL, bpftool)266 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin267 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool268 269install: install-bin270 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)271 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)272 273uninstall:274 $(call QUIET_UNINST, bpftool)275 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool276 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool277 278doc:279 $(call descend,Documentation)280 281doc-clean:282 $(call descend,Documentation,clean)283 284doc-install:285 $(call descend,Documentation,install)286 287doc-uninstall:288 $(call descend,Documentation,uninstall)289 290FORCE:291 292.SECONDARY:293.PHONY: all FORCE bootstrap clean install-bin install uninstall294.PHONY: doc doc-clean doc-install doc-uninstall295.DEFAULT_GOAL := all296 297# Delete partially updated (corrupted) files on error298.DELETE_ON_ERROR:299