1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 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 _OUTPUT := $(OUTPUT) 20else 21 _OUTPUT := $(CURDIR) 22endif 23BOOTSTRAP_OUTPUT := $(_OUTPUT)/bootstrap/ 24 25LIBBPF_OUTPUT := $(_OUTPUT)/libbpf/ 26LIBBPF_DESTDIR := $(LIBBPF_OUTPUT) 27LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)/include 28LIBBPF_HDRS_DIR := $(LIBBPF_INCLUDE)/bpf 29LIBBPF := $(LIBBPF_OUTPUT)libbpf.a 30 31LIBBPF_BOOTSTRAP_OUTPUT := $(BOOTSTRAP_OUTPUT)libbpf/ 32LIBBPF_BOOTSTRAP_DESTDIR := $(LIBBPF_BOOTSTRAP_OUTPUT) 33LIBBPF_BOOTSTRAP_INCLUDE := $(LIBBPF_BOOTSTRAP_DESTDIR)/include 34LIBBPF_BOOTSTRAP_HDRS_DIR := $(LIBBPF_BOOTSTRAP_INCLUDE)/bpf 35LIBBPF_BOOTSTRAP := $(LIBBPF_BOOTSTRAP_OUTPUT)libbpf.a 36 37# We need to copy hashmap.h and nlattr.h which is not otherwise exported by 38# libbpf, but still required by bpftool. 39LIBBPF_INTERNAL_HDRS := $(addprefix $(LIBBPF_HDRS_DIR)/,hashmap.h nlattr.h) 40LIBBPF_BOOTSTRAP_INTERNAL_HDRS := $(addprefix $(LIBBPF_BOOTSTRAP_HDRS_DIR)/,hashmap.h) 41 42ifeq ($(BPFTOOL_VERSION),) 43BPFTOOL_VERSION := $(shell make -rR --no-print-directory -sC ../../.. kernelversion) 44endif 45 46$(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) $(LIBBPF_BOOTSTRAP_OUTPUT) $(LIBBPF_HDRS_DIR) $(LIBBPF_BOOTSTRAP_HDRS_DIR): 47 $(QUIET_MKDIR)mkdir -p $@ 48 49$(LIBBPF): $(wildcard $(BPF_DIR)/*.[ch] $(BPF_DIR)/Makefile) | $(LIBBPF_OUTPUT) 50 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) \ 51 DESTDIR=$(LIBBPF_DESTDIR) prefix= $(LIBBPF) install_headers 52 53$(LIBBPF_INTERNAL_HDRS): $(LIBBPF_HDRS_DIR)/%.h: $(BPF_DIR)/%.h | $(LIBBPF_HDRS_DIR) 54 $(call QUIET_INSTALL, $@) 55 $(Q)install -m 644 -t $(LIBBPF_HDRS_DIR) $< 56 57$(LIBBPF_BOOTSTRAP): $(wildcard $(BPF_DIR)/*.[ch] $(BPF_DIR)/Makefile) | $(LIBBPF_BOOTSTRAP_OUTPUT) 58 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) \ 59 DESTDIR=$(LIBBPF_BOOTSTRAP_DESTDIR) prefix= \ 60 ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) $@ install_headers 61 62$(LIBBPF_BOOTSTRAP_INTERNAL_HDRS): $(LIBBPF_BOOTSTRAP_HDRS_DIR)/%.h: $(BPF_DIR)/%.h | $(LIBBPF_BOOTSTRAP_HDRS_DIR) 63 $(call QUIET_INSTALL, $@) 64 $(Q)install -m 644 -t $(LIBBPF_BOOTSTRAP_HDRS_DIR) $< 65 66$(LIBBPF)-clean: FORCE | $(LIBBPF_OUTPUT) 67 $(call QUIET_CLEAN, libbpf) 68 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null 69 70$(LIBBPF_BOOTSTRAP)-clean: FORCE | $(LIBBPF_BOOTSTRAP_OUTPUT) 71 $(call QUIET_CLEAN, libbpf-bootstrap) 72 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) clean >/dev/null 73 74prefix ?= /usr/local 75bash_compdir ?= /usr/share/bash-completion/completions 76 77CFLAGS += -O2 78CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers 79CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS)) 80CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \ 81 -I$(if $(OUTPUT),$(OUTPUT),.) \ 82 -I$(LIBBPF_INCLUDE) \ 83 -I$(srctree)/kernel/bpf/ \ 84 -I$(srctree)/tools/include \ 85 -I$(srctree)/tools/include/uapi 86CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"' 87ifneq ($(EXTRA_CFLAGS),) 88CFLAGS += $(EXTRA_CFLAGS) 89endif 90ifneq ($(EXTRA_LDFLAGS),) 91LDFLAGS += $(EXTRA_LDFLAGS) 92endif 93 94INSTALL ?= install 95RM ?= rm -f 96 97FEATURE_USER = .bpftool 98FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \ 99 clang-bpf-co-re 100FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \ 101 clang-bpf-co-re 102 103check_feat := 1 104NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall 105ifdef MAKECMDGOALS 106ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),) 107 check_feat := 0 108endif 109endif 110 111ifeq ($(check_feat),1) 112ifeq ($(FEATURES_DUMP),) 113include $(srctree)/tools/build/Makefile.feature 114else 115include $(FEATURES_DUMP) 116endif 117endif 118 119ifeq ($(feature-disassembler-four-args), 1) 120CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE 121endif 122 123ifeq ($(feature-reallocarray), 0) 124CFLAGS += -DCOMPAT_NEED_REALLOCARRAY 125endif 126 127LIBS = $(LIBBPF) -lelf -lz 128LIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf -lz 129ifeq ($(feature-libcap), 1) 130CFLAGS += -DUSE_LIBCAP 131LIBS += -lcap 132endif 133 134include $(wildcard $(OUTPUT)*.d) 135 136all: $(OUTPUT)bpftool 137 138BFD_SRCS = jit_disasm.c 139 140SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c)) 141 142ifeq ($(feature-libbfd),1) 143 LIBS += -lbfd -ldl -lopcodes 144else ifeq ($(feature-libbfd-liberty),1) 145 LIBS += -lbfd -ldl -lopcodes -liberty 146else ifeq ($(feature-libbfd-liberty-z),1) 147 LIBS += -lbfd -ldl -lopcodes -liberty -lz 148endif 149 150ifneq ($(filter -lbfd,$(LIBS)),) 151CFLAGS += -DHAVE_LIBBFD_SUPPORT 152SRCS += $(BFD_SRCS) 153endif 154 155HOST_CFLAGS = $(subst -I$(LIBBPF_INCLUDE),-I$(LIBBPF_BOOTSTRAP_INCLUDE),\ 156 $(subst $(CLANG_CROSS_FLAGS),,$(CFLAGS))) 157 158BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool 159 160BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o xlated_dumper.o btf_dumper.o disasm.o) 161$(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP) 162 163OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o 164$(OBJS): $(LIBBPF) $(LIBBPF_INTERNAL_HDRS) 165 166VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 167 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 168 ../../../vmlinux \ 169 /sys/kernel/btf/vmlinux \ 170 /boot/vmlinux-$(shell uname -r) 171VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 172 173bootstrap: $(BPFTOOL_BOOTSTRAP) 174 175ifneq ($(VMLINUX_BTF)$(VMLINUX_H),) 176ifeq ($(feature-clang-bpf-co-re),1) 177 178BUILD_BPF_SKELS := 1 179 180$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP) 181ifeq ($(VMLINUX_H),) 182 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@ 183else 184 $(Q)cp "$(VMLINUX_H)" $@ 185endif 186 187$(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF_BOOTSTRAP) 188 $(QUIET_CLANG)$(CLANG) \ 189 -I$(if $(OUTPUT),$(OUTPUT),.) \ 190 -I$(srctree)/tools/include/uapi/ \ 191 -I$(LIBBPF_BOOTSTRAP_INCLUDE) \ 192 -g -O2 -Wall -target bpf -c $< -o $@ 193 $(Q)$(LLVM_STRIP) -g $@ 194 195$(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP) 196 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@ 197 198$(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h 199 200$(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h 201 202endif 203endif 204 205CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS) 206 207$(BOOTSTRAP_OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c 208 $(QUIET_CC)$(HOSTCC) $(HOST_CFLAGS) -c -MMD $< -o $@ 209 210$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c 211 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@ 212 213$(OUTPUT)feature.o: 214ifneq ($(feature-zlib), 1) 215 $(error "No zlib found") 216endif 217 218$(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF_BOOTSTRAP) 219 $(QUIET_LINK)$(HOSTCC) $(HOST_CFLAGS) $(LDFLAGS) $(BOOTSTRAP_OBJS) $(LIBS_BOOTSTRAP) -o $@ 220 221$(OUTPUT)bpftool: $(OBJS) $(LIBBPF) 222 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) $(LIBS) -o $@ 223 224$(BOOTSTRAP_OUTPUT)%.o: %.c $(LIBBPF_BOOTSTRAP_INTERNAL_HDRS) | $(BOOTSTRAP_OUTPUT) 225 $(QUIET_CC)$(HOSTCC) $(HOST_CFLAGS) -c -MMD $< -o $@ 226 227$(OUTPUT)%.o: %.c 228 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@ 229 230feature-detect-clean: 231 $(call QUIET_CLEAN, feature-detect) 232 $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null 233 234clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-clean feature-detect-clean 235 $(call QUIET_CLEAN, bpftool) 236 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d 237 $(Q)$(RM) -- $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h 238 $(Q)$(RM) -r -- $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) 239 $(call QUIET_CLEAN, core-gen) 240 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool 241 $(Q)$(RM) -r -- $(OUTPUT)feature/ 242 243install-bin: $(OUTPUT)bpftool 244 $(call QUIET_INSTALL, bpftool) 245 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin 246 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool 247 248install: install-bin 249 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir) 250 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir) 251 252uninstall: 253 $(call QUIET_UNINST, bpftool) 254 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool 255 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool 256 257doc: 258 $(call descend,Documentation) 259 260doc-clean: 261 $(call descend,Documentation,clean) 262 263doc-install: 264 $(call descend,Documentation,install) 265 266doc-uninstall: 267 $(call descend,Documentation,uninstall) 268 269FORCE: 270 271.SECONDARY: 272.PHONY: all FORCE bootstrap clean install-bin install uninstall 273.PHONY: doc doc-clean doc-install doc-uninstall 274.DEFAULT_GOAL := all 275