1 # SPDX-License-Identifier: GPL-2.0-only
2 include ../../scripts/Makefile.include
3 include ../../scripts/utilities.mak
6 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
7 srctree := $(patsubst %/,%,$(dir $(srctree)))
8 srctree := $(patsubst %/,%,$(dir $(srctree)))
17 BPF_DIR = $(srctree)/tools/lib/bpf/
20 LIBBPF_OUTPUT = $(OUTPUT)/libbpf/
21 LIBBPF_PATH = $(LIBBPF_OUTPUT)
22 BOOTSTRAP_OUTPUT = $(OUTPUT)/bootstrap/
25 LIBBPF_PATH = $(BPF_DIR)
26 BOOTSTRAP_OUTPUT = $(CURDIR)/bootstrap/
29 LIBBPF = $(LIBBPF_PATH)libbpf.a
30 LIBBPF_BOOTSTRAP_OUTPUT = $(BOOTSTRAP_OUTPUT)libbpf/
31 LIBBPF_BOOTSTRAP = $(LIBBPF_BOOTSTRAP_OUTPUT)libbpf.a
33 ifeq ($(BPFTOOL_VERSION),)
34 BPFTOOL_VERSION := $(shell make -rR --no-print-directory -sC ../../.. kernelversion)
37 $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) $(LIBBPF_BOOTSTRAP_OUTPUT):
38 $(QUIET_MKDIR)mkdir -p $@
40 $(LIBBPF): FORCE | $(LIBBPF_OUTPUT)
41 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) $(LIBBPF_OUTPUT)libbpf.a
43 $(LIBBPF_BOOTSTRAP): FORCE | $(LIBBPF_BOOTSTRAP_OUTPUT)
44 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) \
45 ARCH= CC=$(HOSTCC) LD=$(HOSTLD) $@
47 $(LIBBPF)-clean: FORCE | $(LIBBPF_OUTPUT)
48 $(call QUIET_CLEAN, libbpf)
49 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null
51 $(LIBBPF_BOOTSTRAP)-clean: FORCE | $(LIBBPF_BOOTSTRAP_OUTPUT)
52 $(call QUIET_CLEAN, libbpf-bootstrap)
53 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) clean >/dev/null
56 bash_compdir ?= /usr/share/bash-completion/completions
59 CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
60 CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))
61 CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
62 -I$(if $(OUTPUT),$(OUTPUT),.) \
63 -I$(srctree)/kernel/bpf/ \
64 -I$(srctree)/tools/include \
65 -I$(srctree)/tools/include/uapi \
66 -I$(srctree)/tools/lib \
67 -I$(srctree)/tools/perf
68 CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
69 ifneq ($(EXTRA_CFLAGS),)
70 CFLAGS += $(EXTRA_CFLAGS)
72 ifneq ($(EXTRA_LDFLAGS),)
73 LDFLAGS += $(EXTRA_LDFLAGS)
79 FEATURE_USER = .bpftool
80 FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \
82 FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \
86 NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
88 ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
93 ifeq ($(check_feat),1)
94 ifeq ($(FEATURES_DUMP),)
95 include $(srctree)/tools/build/Makefile.feature
97 include $(FEATURES_DUMP)
101 ifeq ($(feature-disassembler-four-args), 1)
102 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
105 ifeq ($(feature-reallocarray), 0)
106 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
109 LIBS = $(LIBBPF) -lelf -lz
110 LIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf -lz
111 ifeq ($(feature-libcap), 1)
112 CFLAGS += -DUSE_LIBCAP
116 include $(wildcard $(OUTPUT)*.d)
118 all: $(OUTPUT)bpftool
120 BFD_SRCS = jit_disasm.c
122 SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c))
124 ifeq ($(feature-libbfd),1)
125 LIBS += -lbfd -ldl -lopcodes
126 else ifeq ($(feature-libbfd-liberty),1)
127 LIBS += -lbfd -ldl -lopcodes -liberty
128 else ifeq ($(feature-libbfd-liberty-z),1)
129 LIBS += -lbfd -ldl -lopcodes -liberty -lz
132 ifneq ($(filter -lbfd,$(LIBS)),)
133 CFLAGS += -DHAVE_LIBBFD_SUPPORT
137 BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool
139 BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o)
140 OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
142 VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
143 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
145 /sys/kernel/btf/vmlinux \
146 /boot/vmlinux-$(shell uname -r)
147 VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
149 bootstrap: $(BPFTOOL_BOOTSTRAP)
151 ifneq ($(VMLINUX_BTF)$(VMLINUX_H),)
152 ifeq ($(feature-clang-bpf-co-re),1)
156 $(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
158 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@
160 $(Q)cp "$(VMLINUX_H)" $@
163 $(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF)
164 $(QUIET_CLANG)$(CLANG) \
165 -I$(if $(OUTPUT),$(OUTPUT),.) \
166 -I$(srctree)/tools/include/uapi/ \
168 -I$(srctree)/tools/lib \
169 -g -O2 -Wall -target bpf -c $< -o $@ && $(LLVM_STRIP) -g $@
171 $(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)
172 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@
174 $(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h
176 $(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h
181 CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS)
183 $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
184 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $<
186 $(OUTPUT)feature.o: | zdep
188 $(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF_BOOTSTRAP)
189 $(QUIET_LINK)$(HOSTCC) $(CFLAGS) $(LDFLAGS) -o $@ $(BOOTSTRAP_OBJS) \
192 $(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
193 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
195 $(BOOTSTRAP_OUTPUT)%.o: %.c | $(BOOTSTRAP_OUTPUT)
196 $(QUIET_CC)$(HOSTCC) $(CFLAGS) -c -MMD -o $@ $<
199 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $<
201 feature-detect-clean:
202 $(call QUIET_CLEAN, feature-detect)
203 $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null
205 clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-clean feature-detect-clean
206 $(call QUIET_CLEAN, bpftool)
207 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d
208 $(Q)$(RM) -- $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h
209 $(Q)$(RM) -r -- $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT)
210 $(call QUIET_CLEAN, core-gen)
211 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool
212 $(Q)$(RM) -r -- $(OUTPUT)feature/
214 install: $(OUTPUT)bpftool
215 $(call QUIET_INSTALL, bpftool)
216 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin
217 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool
218 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)
219 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)
222 $(call QUIET_UNINST, bpftool)
223 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
224 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
227 $(call descend,Documentation)
230 $(call descend,Documentation,clean)
233 $(call descend,Documentation,install)
236 $(call descend,Documentation,uninstall)
241 @if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi
244 .PHONY: all FORCE clean install uninstall zdep
245 .PHONY: doc doc-clean doc-install doc-uninstall