1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 include ../../scripts/Makefile.include 3 4 ifeq ($(srctree),) 5 srctree := $(patsubst %/,%,$(dir $(CURDIR))) 6 srctree := $(patsubst %/,%,$(dir $(srctree))) 7 srctree := $(patsubst %/,%,$(dir $(srctree))) 8 endif 9 10 ifeq ($(V),1) 11 Q = 12 else 13 Q = @ 14 endif 15 16 BPF_DIR = $(srctree)/tools/lib/bpf 17 18 ifneq ($(OUTPUT),) 19 _OUTPUT := $(OUTPUT) 20 else 21 _OUTPUT := $(CURDIR)/ 22 endif 23 BOOTSTRAP_OUTPUT := $(_OUTPUT)bootstrap/ 24 25 LIBBPF_OUTPUT := $(_OUTPUT)libbpf/ 26 LIBBPF_DESTDIR := $(LIBBPF_OUTPUT) 27 LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)include 28 LIBBPF_HDRS_DIR := $(LIBBPF_INCLUDE)/bpf 29 LIBBPF := $(LIBBPF_OUTPUT)libbpf.a 30 31 LIBBPF_BOOTSTRAP_OUTPUT := $(BOOTSTRAP_OUTPUT)libbpf/ 32 LIBBPF_BOOTSTRAP_DESTDIR := $(LIBBPF_BOOTSTRAP_OUTPUT) 33 LIBBPF_BOOTSTRAP_INCLUDE := $(LIBBPF_BOOTSTRAP_DESTDIR)include 34 LIBBPF_BOOTSTRAP_HDRS_DIR := $(LIBBPF_BOOTSTRAP_INCLUDE)/bpf 35 LIBBPF_BOOTSTRAP := $(LIBBPF_BOOTSTRAP_OUTPUT)libbpf.a 36 37 # We need to copy hashmap.h, nlattr.h, relo_core.h and libbpf_internal.h 38 # which are not otherwise exported by libbpf, but still required by bpftool. 39 LIBBPF_INTERNAL_HDRS := $(addprefix $(LIBBPF_HDRS_DIR)/,hashmap.h nlattr.h relo_core.h libbpf_internal.h) 40 LIBBPF_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_headers 48 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_headers 57 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/null 65 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/null 69 70 prefix ?= /usr/local 71 bash_compdir ?= /usr/share/bash-completion/completions 72 73 CFLAGS += -O2 74 CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers 75 CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS)) 76 CFLAGS += -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$(srctree)/tools/include/uapi 82 ifneq ($(BPFTOOL_VERSION),) 83 CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"' 84 endif 85 ifneq ($(EXTRA_CFLAGS),) 86 CFLAGS += $(EXTRA_CFLAGS) 87 endif 88 ifneq ($(EXTRA_LDFLAGS),) 89 LDFLAGS += $(EXTRA_LDFLAGS) 90 endif 91 92 HOST_CFLAGS := $(subst -I$(LIBBPF_INCLUDE),-I$(LIBBPF_BOOTSTRAP_INCLUDE),\ 93 $(subst $(CLANG_CROSS_FLAGS),,$(CFLAGS))) 94 HOST_LDFLAGS := $(LDFLAGS) 95 96 INSTALL ?= install 97 RM ?= rm -f 98 99 FEATURE_USER = .bpftool 100 101 FEATURE_TESTS := clang-bpf-co-re 102 FEATURE_TESTS += llvm 103 FEATURE_TESTS += libcap 104 FEATURE_TESTS += libbfd 105 FEATURE_TESTS += libbfd-liberty 106 FEATURE_TESTS += libbfd-liberty-z 107 FEATURE_TESTS += disassembler-four-args 108 FEATURE_TESTS += disassembler-init-styled 109 110 FEATURE_DISPLAY := clang-bpf-co-re 111 FEATURE_DISPLAY += llvm 112 FEATURE_DISPLAY += libcap 113 FEATURE_DISPLAY += libbfd 114 FEATURE_DISPLAY += libbfd-liberty 115 FEATURE_DISPLAY += libbfd-liberty-z 116 117 check_feat := 1 118 NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall 119 ifdef MAKECMDGOALS 120 ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),) 121 check_feat := 0 122 endif 123 endif 124 125 ifeq ($(check_feat),1) 126 ifeq ($(FEATURES_DUMP),) 127 include $(srctree)/tools/build/Makefile.feature 128 else 129 include $(FEATURES_DUMP) 130 endif 131 endif 132 133 LIBS = $(LIBBPF) -lelf -lz 134 LIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf -lz 135 ifeq ($(feature-libcap), 1) 136 CFLAGS += -DUSE_LIBCAP 137 LIBS += -lcap 138 endif 139 140 include $(wildcard $(OUTPUT)*.d) 141 142 all: $(OUTPUT)bpftool 143 144 SRCS := $(wildcard *.c) 145 146 ifeq ($(feature-llvm),1) 147 # If LLVM is available, use it for JIT disassembly 148 CFLAGS += -DHAVE_LLVM_SUPPORT 149 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets 150 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 endif 156 LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags) 157 else 158 # Fall back on libbfd 159 ifeq ($(feature-libbfd),1) 160 LIBS += -lbfd -ldl -lopcodes 161 else ifeq ($(feature-libbfd-liberty),1) 162 LIBS += -lbfd -ldl -lopcodes -liberty 163 else ifeq ($(feature-libbfd-liberty-z),1) 164 LIBS += -lbfd -ldl -lopcodes -liberty -lz 165 endif 166 167 # If one of the above feature combinations is set, we support libbfd 168 ifneq ($(filter -lbfd,$(LIBS)),) 169 CFLAGS += -DHAVE_LIBBFD_SUPPORT 170 171 # Libbfd interface changed over time, figure out what we need 172 ifeq ($(feature-disassembler-four-args), 1) 173 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE 174 endif 175 ifeq ($(feature-disassembler-init-styled), 1) 176 CFLAGS += -DDISASM_INIT_STYLED 177 endif 178 endif 179 endif 180 ifeq ($(filter -DHAVE_LLVM_SUPPORT -DHAVE_LIBBFD_SUPPORT,$(CFLAGS)),) 181 # No support for JIT disassembly 182 SRCS := $(filter-out jit_disasm.c,$(SRCS)) 183 endif 184 185 BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool 186 187 BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o) 188 $(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP) 189 190 OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o 191 $(OBJS): $(LIBBPF) $(LIBBPF_INTERNAL_HDRS) 192 193 VMLINUX_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) 198 VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 199 200 bootstrap: $(BPFTOOL_BOOTSTRAP) 201 202 ifneq ($(VMLINUX_BTF)$(VMLINUX_H),) 203 ifeq ($(feature-clang-bpf-co-re),1) 204 205 BUILD_BPF_SKELS := 1 206 207 ifeq ($(VMLINUX_H),) 208 $(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP) 209 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@ 210 else 211 $(OUTPUT)vmlinux.h: $(VMLINUX_H) 212 $(Q)cp "$(VMLINUX_H)" $@ 213 endif 214 215 $(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.h 228 229 $(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h 230 231 endif 232 endif 233 234 CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS) 235 236 $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c 237 $(QUIET_CC)$(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: %.c 249 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@ 250 251 feature-detect-clean: 252 $(call QUIET_CLEAN, feature-detect) 253 $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null 254 255 clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-clean feature-detect-clean 256 $(call QUIET_CLEAN, bpftool) 257 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d 258 $(Q)$(RM) -- $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h 259 $(Q)$(RM) -r -- $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) 260 $(call QUIET_CLEAN, core-gen) 261 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool 262 $(Q)$(RM) -r -- $(OUTPUT)feature/ 263 264 install-bin: $(OUTPUT)bpftool 265 $(call QUIET_INSTALL, bpftool) 266 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin 267 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool 268 269 install: install-bin 270 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir) 271 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir) 272 273 uninstall: 274 $(call QUIET_UNINST, bpftool) 275 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool 276 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool 277 278 doc: 279 $(call descend,Documentation) 280 281 doc-clean: 282 $(call descend,Documentation,clean) 283 284 doc-install: 285 $(call descend,Documentation,install) 286 287 doc-uninstall: 288 $(call descend,Documentation,uninstall) 289 290 FORCE: 291 292 .SECONDARY: 293 .PHONY: all FORCE bootstrap clean install-bin install uninstall 294 .PHONY: doc doc-clean doc-install doc-uninstall 295 .DEFAULT_GOAL := all 296 297 # Delete partially updated (corrupted) files on error 298 .DELETE_ON_ERROR:
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