1# SPDX-License-Identifier: GPL-2.0-only 2include ../../scripts/Makefile.include 3include ../../scripts/utilities.mak 4 5ifeq ($(srctree),) 6srctree := $(patsubst %/,%,$(dir $(CURDIR))) 7srctree := $(patsubst %/,%,$(dir $(srctree))) 8srctree := $(patsubst %/,%,$(dir $(srctree))) 9endif 10 11ifeq ($(V),1) 12 Q = 13else 14 Q = @ 15endif 16 17BPF_DIR = $(srctree)/tools/lib/bpf/ 18 19ifneq ($(OUTPUT),) 20 LIBBPF_OUTPUT = $(OUTPUT)/libbpf/ 21 LIBBPF_PATH = $(LIBBPF_OUTPUT) 22else 23 LIBBPF_PATH = $(BPF_DIR) 24endif 25 26LIBBPF = $(LIBBPF_PATH)libbpf.a 27 28BPFTOOL_VERSION := $(shell make -rR --no-print-directory -sC ../../.. kernelversion) 29 30$(LIBBPF): FORCE 31 $(if $(LIBBPF_OUTPUT),@mkdir -p $(LIBBPF_OUTPUT)) 32 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) $(LIBBPF_OUTPUT)libbpf.a 33 34$(LIBBPF)-clean: 35 $(call QUIET_CLEAN, libbpf) 36 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null 37 38prefix ?= /usr/local 39bash_compdir ?= /usr/share/bash-completion/completions 40 41CFLAGS += -O2 42CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers 43CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS)) 44CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \ 45 -I$(if $(OUTPUT),$(OUTPUT),.) \ 46 -I$(srctree)/kernel/bpf/ \ 47 -I$(srctree)/tools/include \ 48 -I$(srctree)/tools/include/uapi \ 49 -I$(srctree)/tools/lib \ 50 -I$(srctree)/tools/perf 51CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"' 52ifneq ($(EXTRA_CFLAGS),) 53CFLAGS += $(EXTRA_CFLAGS) 54endif 55ifneq ($(EXTRA_LDFLAGS),) 56LDFLAGS += $(EXTRA_LDFLAGS) 57endif 58 59INSTALL ?= install 60RM ?= rm -f 61CLANG ?= clang 62 63FEATURE_USER = .bpftool 64FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \ 65 clang-bpf-co-re 66FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \ 67 clang-bpf-co-re 68 69check_feat := 1 70NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall 71ifdef MAKECMDGOALS 72ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),) 73 check_feat := 0 74endif 75endif 76 77ifeq ($(check_feat),1) 78ifeq ($(FEATURES_DUMP),) 79include $(srctree)/tools/build/Makefile.feature 80else 81include $(FEATURES_DUMP) 82endif 83endif 84 85ifeq ($(feature-disassembler-four-args), 1) 86CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE 87endif 88 89ifeq ($(feature-reallocarray), 0) 90CFLAGS += -DCOMPAT_NEED_REALLOCARRAY 91endif 92 93LIBS = $(LIBBPF) -lelf -lz 94ifeq ($(feature-libcap), 1) 95CFLAGS += -DUSE_LIBCAP 96LIBS += -lcap 97endif 98 99include $(wildcard $(OUTPUT)*.d) 100 101all: $(OUTPUT)bpftool 102 103BFD_SRCS = jit_disasm.c 104 105SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c)) 106 107ifeq ($(feature-libbfd),1) 108 LIBS += -lbfd -ldl -lopcodes 109else ifeq ($(feature-libbfd-liberty),1) 110 LIBS += -lbfd -ldl -lopcodes -liberty 111else ifeq ($(feature-libbfd-liberty-z),1) 112 LIBS += -lbfd -ldl -lopcodes -liberty -lz 113endif 114 115ifneq ($(filter -lbfd,$(LIBS)),) 116CFLAGS += -DHAVE_LIBBFD_SUPPORT 117SRCS += $(BFD_SRCS) 118endif 119 120BPFTOOL_BOOTSTRAP := $(if $(OUTPUT),$(OUTPUT)bpftool-bootstrap,./bpftool-bootstrap) 121 122BOOTSTRAP_OBJS = $(addprefix $(OUTPUT),main.o common.o json_writer.o gen.o btf.o) 123OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o 124 125VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 126 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 127 ../../../vmlinux \ 128 /sys/kernel/btf/vmlinux \ 129 /boot/vmlinux-$(shell uname -r) 130VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 131 132ifneq ($(VMLINUX_BTF)$(VMLINUX_H),) 133ifeq ($(feature-clang-bpf-co-re),1) 134 135BUILD_BPF_SKELS := 1 136 137$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP) 138ifeq ($(VMLINUX_H),) 139 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@ 140else 141 $(Q)cp "$(VMLINUX_H)" $@ 142endif 143 144$(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF) 145 $(QUIET_CLANG)$(CLANG) \ 146 -I$(if $(OUTPUT),$(OUTPUT),.) \ 147 -I$(srctree)/tools/include/uapi/ \ 148 -I$(LIBBPF_PATH) \ 149 -I$(srctree)/tools/lib \ 150 -g -O2 -target bpf -c $< -o $@ 151 152$(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP) 153 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@ 154 155$(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h 156 157$(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h 158 159endif 160endif 161 162CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS) 163 164$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c 165 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $< 166 167$(OUTPUT)feature.o: | zdep 168 169$(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF) 170 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(BOOTSTRAP_OBJS) $(LIBS) 171 172$(OUTPUT)bpftool: $(OBJS) $(LIBBPF) 173 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $(LIBS) 174 175$(OUTPUT)%.o: %.c 176 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $< 177 178clean: $(LIBBPF)-clean 179 $(call QUIET_CLEAN, bpftool) 180 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d 181 $(Q)$(RM) -- $(BPFTOOL_BOOTSTRAP) $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h 182 $(Q)$(RM) -r -- $(OUTPUT)libbpf/ 183 $(call QUIET_CLEAN, core-gen) 184 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool 185 $(Q)$(RM) -r -- $(OUTPUT)feature/ 186 187install: $(OUTPUT)bpftool 188 $(call QUIET_INSTALL, bpftool) 189 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin 190 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool 191 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir) 192 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir) 193 194uninstall: 195 $(call QUIET_UNINST, bpftool) 196 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool 197 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool 198 199doc: 200 $(call descend,Documentation) 201 202doc-clean: 203 $(call descend,Documentation,clean) 204 205doc-install: 206 $(call descend,Documentation,install) 207 208doc-uninstall: 209 $(call descend,Documentation,uninstall) 210 211FORCE: 212 213zdep: 214 @if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi 215 216.SECONDARY: 217.PHONY: all FORCE clean install uninstall zdep 218.PHONY: doc doc-clean doc-install doc-uninstall 219.DEFAULT_GOAL := all 220