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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, nlattr.h, relo_core.h and libbpf_internal.h
38# which are not otherwise exported by libbpf, but still required by bpftool.
39LIBBPF_INTERNAL_HDRS := $(addprefix $(LIBBPF_HDRS_DIR)/,hashmap.h nlattr.h relo_core.h libbpf_internal.h)
40LIBBPF_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
70prefix ?= /usr/local
71bash_compdir ?= /usr/share/bash-completion/completions
72
73CFLAGS += -O2
74CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
75CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))
76CFLAGS += -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$(srctree)/tools/include/uapi
82ifneq ($(BPFTOOL_VERSION),)
83CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
84endif
85ifneq ($(EXTRA_CFLAGS),)
86CFLAGS += $(EXTRA_CFLAGS)
87endif
88ifneq ($(EXTRA_LDFLAGS),)
89LDFLAGS += $(EXTRA_LDFLAGS)
90endif
91
92HOST_CFLAGS := $(subst -I$(LIBBPF_INCLUDE),-I$(LIBBPF_BOOTSTRAP_INCLUDE),\
93 $(subst $(CLANG_CROSS_FLAGS),,$(CFLAGS)))
94HOST_LDFLAGS := $(LDFLAGS)
95
96INSTALL ?= install
97RM ?= rm -f
98
99FEATURE_USER = .bpftool
100
101FEATURE_TESTS := clang-bpf-co-re
102FEATURE_TESTS += llvm
103FEATURE_TESTS += libcap
104FEATURE_TESTS += libbfd
105FEATURE_TESTS += libbfd-liberty
106FEATURE_TESTS += libbfd-liberty-z
107FEATURE_TESTS += disassembler-four-args
108FEATURE_TESTS += disassembler-init-styled
109
110FEATURE_DISPLAY := clang-bpf-co-re
111FEATURE_DISPLAY += llvm
112FEATURE_DISPLAY += libcap
113FEATURE_DISPLAY += libbfd
114FEATURE_DISPLAY += libbfd-liberty
115FEATURE_DISPLAY += libbfd-liberty-z
116
117check_feat := 1
118NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
119ifdef MAKECMDGOALS
120ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
121 check_feat := 0
122endif
123endif
124
125ifeq ($(check_feat),1)
126ifeq ($(FEATURES_DUMP),)
127include $(srctree)/tools/build/Makefile.feature
128else
129include $(FEATURES_DUMP)
130endif
131endif
132
133LIBS = $(LIBBPF) -lelf -lz
134LIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf -lz
135ifeq ($(feature-libcap), 1)
136CFLAGS += -DUSE_LIBCAP
137LIBS += -lcap
138endif
139
140include $(wildcard $(OUTPUT)*.d)
141
142all: $(OUTPUT)bpftool
143
144SRCS := $(wildcard *.c)
145
146ifeq ($(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 # llvm-config always adds -D_GNU_SOURCE, however, it may already be in CFLAGS
151 # (e.g. when bpftool build is called from selftests build as selftests
152 # Makefile includes lib.mk which sets -D_GNU_SOURCE) which would cause
153 # compilation error due to redefinition. Let's filter it out here.
154 CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags))
155 LIBS += $(shell $(LLVM_CONFIG) --libs $(LLVM_CONFIG_LIB_COMPONENTS))
156 ifeq ($(shell $(LLVM_CONFIG) --shared-mode),static)
157 LIBS += $(shell $(LLVM_CONFIG) --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))
158 LIBS += -lstdc++
159 endif
160 LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags)
161else
162 # Fall back on libbfd
163 ifeq ($(feature-libbfd),1)
164 LIBS += -lbfd -ldl -lopcodes
165 else ifeq ($(feature-libbfd-liberty),1)
166 LIBS += -lbfd -ldl -lopcodes -liberty
167 else ifeq ($(feature-libbfd-liberty-z),1)
168 LIBS += -lbfd -ldl -lopcodes -liberty -lz
169 endif
170
171 # If one of the above feature combinations is set, we support libbfd
172 ifneq ($(filter -lbfd,$(LIBS)),)
173 CFLAGS += -DHAVE_LIBBFD_SUPPORT
174
175 # Libbfd interface changed over time, figure out what we need
176 ifeq ($(feature-disassembler-four-args), 1)
177 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
178 endif
179 ifeq ($(feature-disassembler-init-styled), 1)
180 CFLAGS += -DDISASM_INIT_STYLED
181 endif
182 endif
183endif
184ifeq ($(filter -DHAVE_LLVM_SUPPORT -DHAVE_LIBBFD_SUPPORT,$(CFLAGS)),)
185 # No support for JIT disassembly
186 SRCS := $(filter-out jit_disasm.c,$(SRCS))
187endif
188
189BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool
190
191BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o)
192$(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP)
193
194OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
195$(OBJS): $(LIBBPF) $(LIBBPF_INTERNAL_HDRS)
196
197VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
198 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
199 ../../../vmlinux \
200 /sys/kernel/btf/vmlinux \
201 /boot/vmlinux-$(shell uname -r)
202VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
203
204bootstrap: $(BPFTOOL_BOOTSTRAP)
205
206ifneq ($(VMLINUX_BTF)$(VMLINUX_H),)
207ifeq ($(feature-clang-bpf-co-re),1)
208
209BUILD_BPF_SKELS := 1
210
211ifeq ($(VMLINUX_H),)
212$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
213 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@
214else
215$(OUTPUT)vmlinux.h: $(VMLINUX_H)
216 $(Q)cp "$(VMLINUX_H)" $@
217endif
218
219$(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF_BOOTSTRAP)
220 $(QUIET_CLANG)$(CLANG) \
221 -I$(or $(OUTPUT),.) \
222 -I$(srctree)/tools/include/uapi/ \
223 -I$(LIBBPF_BOOTSTRAP_INCLUDE) \
224 -g -O2 -Wall -fno-stack-protector \
225 --target=bpf -c $< -o $@
226 $(Q)$(LLVM_STRIP) -g $@
227
228$(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)
229 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@
230
231$(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h
232
233$(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h
234
235endif
236endif
237
238CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS)
239
240$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
241 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@
242
243$(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF_BOOTSTRAP)
244 $(QUIET_LINK)$(HOSTCC) $(HOST_CFLAGS) $(HOST_LDFLAGS) $(BOOTSTRAP_OBJS) $(LIBS_BOOTSTRAP) -o $@
245
246$(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
247 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) $(LIBS) -o $@
248
249$(BOOTSTRAP_OUTPUT)%.o: %.c $(LIBBPF_BOOTSTRAP_INTERNAL_HDRS) | $(BOOTSTRAP_OUTPUT)
250 $(QUIET_CC)$(HOSTCC) $(HOST_CFLAGS) -c -MMD $< -o $@
251
252$(OUTPUT)%.o: %.c
253 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< -o $@
254
255feature-detect-clean:
256 $(call QUIET_CLEAN, feature-detect)
257 $(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null
258
259clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-clean feature-detect-clean
260 $(call QUIET_CLEAN, bpftool)
261 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d
262 $(Q)$(RM) -- $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h
263 $(Q)$(RM) -r -- $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT)
264 $(call QUIET_CLEAN, core-gen)
265 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool
266 $(Q)$(RM) -r -- $(OUTPUT)feature/
267
268install-bin: $(OUTPUT)bpftool
269 $(call QUIET_INSTALL, bpftool)
270 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin
271 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool
272
273install: install-bin
274 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)
275 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)
276
277uninstall:
278 $(call QUIET_UNINST, bpftool)
279 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
280 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
281
282doc:
283 $(call descend,Documentation)
284
285doc-clean:
286 $(call descend,Documentation,clean)
287
288doc-install:
289 $(call descend,Documentation,install)
290
291doc-uninstall:
292 $(call descend,Documentation,uninstall)
293
294FORCE:
295
296.SECONDARY:
297.PHONY: all FORCE bootstrap clean install-bin install uninstall
298.PHONY: doc doc-clean doc-install doc-uninstall
299.DEFAULT_GOAL := all
300
301# Delete partially updated (corrupted) files on error
302.DELETE_ON_ERROR:
1# SPDX-License-Identifier: GPL-2.0-only
2include ../../scripts/Makefile.include
3include ../../scripts/utilities.mak
4
5ifeq ($(srctree),)
6srctree := $(patsubst %/,%,$(dir $(CURDIR)))
7srctree := $(patsubst %/,%,$(dir $(srctree)))
8srctree := $(patsubst %/,%,$(dir $(srctree)))
9endif
10
11ifeq ($(V),1)
12 Q =
13else
14 Q = @
15endif
16
17BPF_DIR = $(srctree)/tools/lib/bpf/
18
19ifneq ($(OUTPUT),)
20 LIBBPF_OUTPUT = $(OUTPUT)/libbpf/
21 LIBBPF_PATH = $(LIBBPF_OUTPUT)
22else
23 LIBBPF_PATH = $(BPF_DIR)
24endif
25
26LIBBPF = $(LIBBPF_PATH)libbpf.a
27
28BPFTOOL_VERSION := $(shell make -rR --no-print-directory -sC ../../.. kernelversion)
29
30$(LIBBPF): FORCE
31 $(if $(LIBBPF_OUTPUT),@mkdir -p $(LIBBPF_OUTPUT))
32 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) $(LIBBPF_OUTPUT)libbpf.a
33
34$(LIBBPF)-clean:
35 $(call QUIET_CLEAN, libbpf)
36 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null
37
38prefix ?= /usr/local
39bash_compdir ?= /usr/share/bash-completion/completions
40
41CFLAGS += -O2
42CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
43CFLAGS += $(filter-out -Wswitch-enum,$(EXTRA_WARNINGS))
44CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
45 -I$(srctree)/kernel/bpf/ \
46 -I$(srctree)/tools/include \
47 -I$(srctree)/tools/include/uapi \
48 -I$(srctree)/tools/lib/bpf \
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
58LIBS = $(LIBBPF) -lelf -lz
59
60INSTALL ?= install
61RM ?= rm -f
62
63FEATURE_USER = .bpftool
64FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib
65FEATURE_DISPLAY = libbfd disassembler-four-args zlib
66
67check_feat := 1
68NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
69ifdef MAKECMDGOALS
70ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
71 check_feat := 0
72endif
73endif
74
75ifeq ($(check_feat),1)
76ifeq ($(FEATURES_DUMP),)
77include $(srctree)/tools/build/Makefile.feature
78else
79include $(FEATURES_DUMP)
80endif
81endif
82
83ifeq ($(feature-disassembler-four-args), 1)
84CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
85endif
86
87ifeq ($(feature-reallocarray), 0)
88CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
89endif
90
91include $(wildcard $(OUTPUT)*.d)
92
93all: $(OUTPUT)bpftool
94
95BFD_SRCS = jit_disasm.c
96
97SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c))
98
99ifeq ($(feature-libbfd),1)
100 LIBS += -lbfd -ldl -lopcodes
101else ifeq ($(feature-libbfd-liberty),1)
102 LIBS += -lbfd -ldl -lopcodes -liberty
103else ifeq ($(feature-libbfd-liberty-z),1)
104 LIBS += -lbfd -ldl -lopcodes -liberty -lz
105endif
106
107ifneq ($(filter -lbfd,$(LIBS)),)
108CFLAGS += -DHAVE_LIBBFD_SUPPORT
109SRCS += $(BFD_SRCS)
110endif
111
112OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
113
114$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
115 $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<
116
117$(OUTPUT)feature.o: | zdep
118
119$(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
120 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
121
122$(OUTPUT)%.o: %.c
123 $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<
124
125clean: $(LIBBPF)-clean
126 $(call QUIET_CLEAN, bpftool)
127 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d
128 $(Q)$(RM) -r -- $(OUTPUT)libbpf/
129 $(call QUIET_CLEAN, core-gen)
130 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool
131 $(Q)$(RM) -r -- $(OUTPUT)feature/
132
133install: $(OUTPUT)bpftool
134 $(call QUIET_INSTALL, bpftool)
135 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin
136 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool
137 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)
138 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)
139
140uninstall:
141 $(call QUIET_UNINST, bpftool)
142 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
143 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
144
145doc:
146 $(call descend,Documentation)
147
148doc-clean:
149 $(call descend,Documentation,clean)
150
151doc-install:
152 $(call descend,Documentation,install)
153
154doc-uninstall:
155 $(call descend,Documentation,uninstall)
156
157FORCE:
158
159zdep:
160 @if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi
161
162.PHONY: all FORCE clean install uninstall zdep
163.PHONY: doc doc-clean doc-install doc-uninstall
164.DEFAULT_GOAL := all