1# SPDX-License-Identifier: GPL-2.0-only 2include ../../scripts/Makefile.include 3 4ifeq ($(srctree),) 5srctree := $(patsubst %/,%,$(dir $(CURDIR))) 6srctree := $(patsubst %/,%,$(dir $(srctree))) 7srctree := $(patsubst %/,%,$(dir $(srctree))) 8endif 9 10ifeq ($(V),1) 11 Q = 12else 13 Q = @ 14endif 15 16BPF_DIR = $(srctree)/tools/lib/bpf/ 17 18ifneq ($(OUTPUT),) 19 LIBBPF_OUTPUT = $(OUTPUT)/libbpf/ 20 LIBBPF_PATH = $(LIBBPF_OUTPUT) 21else 22 LIBBPF_PATH = $(BPF_DIR) 23endif 24 25LIBBPF = $(LIBBPF_PATH)libbpf.a 26 27BPFTOOL_VERSION ?= $(shell make -rR --no-print-directory -sC ../../.. kernelversion) 28 29$(LIBBPF): FORCE 30 $(if $(LIBBPF_OUTPUT),@mkdir -p $(LIBBPF_OUTPUT)) 31 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) $(LIBBPF_OUTPUT)libbpf.a 32 33$(LIBBPF)-clean: 34 $(call QUIET_CLEAN, libbpf) 35 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null 36 37prefix ?= /usr/local 38bash_compdir ?= /usr/share/bash-completion/completions 39 40CFLAGS += -O2 41CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers 42CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS)) 43CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \ 44 -I$(if $(OUTPUT),$(OUTPUT),.) \ 45 -I$(srctree)/kernel/bpf/ \ 46 -I$(srctree)/tools/include \ 47 -I$(srctree)/tools/include/uapi \ 48 -I$(srctree)/tools/lib \ 49 -I$(srctree)/tools/perf 50CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"' 51ifneq ($(EXTRA_CFLAGS),) 52CFLAGS += $(EXTRA_CFLAGS) 53endif 54ifneq ($(EXTRA_LDFLAGS),) 55LDFLAGS += $(EXTRA_LDFLAGS) 56endif 57 58INSTALL ?= install 59RM ?= rm -f 60CLANG ?= clang 61LLVM_STRIP ?= llvm-strip 62 63FEATURE_USER = .bpftool 64FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \ 65 clang-bpf-co-re 66FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \ 67 clang-bpf-co-re 68 69check_feat := 1 70NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall 71ifdef MAKECMDGOALS 72ifeq ($(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 $@ && $(LLVM_STRIP) -g $@ 151 152$(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 178feature-detect-clean: 179 $(call QUIET_CLEAN, feature-detect) 180 $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null 181 182clean: $(LIBBPF)-clean feature-detect-clean 183 $(call QUIET_CLEAN, bpftool) 184 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d 185 $(Q)$(RM) -- $(BPFTOOL_BOOTSTRAP) $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h 186 $(Q)$(RM) -r -- $(OUTPUT)libbpf/ 187 $(call QUIET_CLEAN, core-gen) 188 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool 189 $(Q)$(RM) -r -- $(OUTPUT)feature/ 190 191install: $(OUTPUT)bpftool 192 $(call QUIET_INSTALL, bpftool) 193 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin 194 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool 195 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir) 196 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir) 197 198uninstall: 199 $(call QUIET_UNINST, bpftool) 200 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool 201 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool 202 203doc: 204 $(call descend,Documentation) 205 206doc-clean: 207 $(call descend,Documentation,clean) 208 209doc-install: 210 $(call descend,Documentation,install) 211 212doc-uninstall: 213 $(call descend,Documentation,uninstall) 214 215FORCE: 216 217zdep: 218 @if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi 219 220.SECONDARY: 221.PHONY: all FORCE clean install uninstall zdep 222.PHONY: doc doc-clean doc-install doc-uninstall 223.DEFAULT_GOAL := all 224