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)
23 LIBBPF_PATH = $(BPF_DIR)
26 LIBBPF = $(LIBBPF_PATH)libbpf.a
28 BPFTOOL_VERSION ?= $(shell make -rR --no-print-directory -sC ../../.. kernelversion)
31 $(if $(LIBBPF_OUTPUT),@mkdir -p $(LIBBPF_OUTPUT))
32 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) $(LIBBPF_OUTPUT)libbpf.a
35 $(call QUIET_CLEAN, libbpf)
36 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null
39 bash_compdir ?= /usr/share/bash-completion/completions
42 CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
43 CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))
44 CFLAGS += -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$(srctree)/tools/perf
51 CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
52 ifneq ($(EXTRA_CFLAGS),)
53 CFLAGS += $(EXTRA_CFLAGS)
55 ifneq ($(EXTRA_LDFLAGS),)
56 LDFLAGS += $(EXTRA_LDFLAGS)
62 LLVM_STRIP ?= llvm-strip
64 FEATURE_USER = .bpftool
65 FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \
67 FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \
71 NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
73 ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
78 ifeq ($(check_feat),1)
79 ifeq ($(FEATURES_DUMP),)
80 include $(srctree)/tools/build/Makefile.feature
82 include $(FEATURES_DUMP)
86 ifeq ($(feature-disassembler-four-args), 1)
87 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
90 ifeq ($(feature-reallocarray), 0)
91 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
94 LIBS = $(LIBBPF) -lelf -lz
95 ifeq ($(feature-libcap), 1)
96 CFLAGS += -DUSE_LIBCAP
100 include $(wildcard $(OUTPUT)*.d)
102 all: $(OUTPUT)bpftool
104 BFD_SRCS = jit_disasm.c
106 SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c))
108 ifeq ($(feature-libbfd),1)
109 LIBS += -lbfd -ldl -lopcodes
110 else ifeq ($(feature-libbfd-liberty),1)
111 LIBS += -lbfd -ldl -lopcodes -liberty
112 else ifeq ($(feature-libbfd-liberty-z),1)
113 LIBS += -lbfd -ldl -lopcodes -liberty -lz
116 ifneq ($(filter -lbfd,$(LIBS)),)
117 CFLAGS += -DHAVE_LIBBFD_SUPPORT
121 BPFTOOL_BOOTSTRAP := $(if $(OUTPUT),$(OUTPUT)bpftool-bootstrap,./bpftool-bootstrap)
123 BOOTSTRAP_OBJS = $(addprefix $(OUTPUT),main.o common.o json_writer.o gen.o btf.o)
124 OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
126 VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
127 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
129 /sys/kernel/btf/vmlinux \
130 /boot/vmlinux-$(shell uname -r)
131 VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
133 ifneq ($(VMLINUX_BTF)$(VMLINUX_H),)
134 ifeq ($(feature-clang-bpf-co-re),1)
138 $(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
140 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@
142 $(Q)cp "$(VMLINUX_H)" $@
145 $(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF)
146 $(QUIET_CLANG)$(CLANG) \
147 -I$(if $(OUTPUT),$(OUTPUT),.) \
148 -I$(srctree)/tools/include/uapi/ \
150 -I$(srctree)/tools/lib \
151 -g -O2 -target bpf -c $< -o $@ && $(LLVM_STRIP) -g $@
153 $(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)
154 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@
156 $(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h
158 $(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h
163 CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS)
165 $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
166 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $<
168 $(OUTPUT)feature.o: | zdep
170 $(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF)
171 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(BOOTSTRAP_OBJS) $(LIBS)
173 $(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
174 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
177 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $<
179 feature-detect-clean:
180 $(call QUIET_CLEAN, feature-detect)
181 $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null
183 clean: $(LIBBPF)-clean feature-detect-clean
184 $(call QUIET_CLEAN, bpftool)
185 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d
186 $(Q)$(RM) -- $(BPFTOOL_BOOTSTRAP) $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h
187 $(Q)$(RM) -r -- $(OUTPUT)libbpf/
188 $(call QUIET_CLEAN, core-gen)
189 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool
190 $(Q)$(RM) -r -- $(OUTPUT)feature/
192 install: $(OUTPUT)bpftool
193 $(call QUIET_INSTALL, bpftool)
194 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin
195 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool
196 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)
197 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)
200 $(call QUIET_UNINST, bpftool)
201 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
202 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
205 $(call descend,Documentation)
208 $(call descend,Documentation,clean)
211 $(call descend,Documentation,install)
214 $(call descend,Documentation,uninstall)
219 @if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi
222 .PHONY: all FORCE clean install uninstall zdep
223 .PHONY: doc doc-clean doc-install doc-uninstall