1 # SPDX-License-Identifier: (GPL-2.0-only OR BS
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)
32 LIBBPF_BOOTSTRAP_DESTDIR := $(LIBBPF_BOOTSTRAP
33 LIBBPF_BOOTSTRAP_INCLUDE := $(LIBBPF_BOOTSTRAP
34 LIBBPF_BOOTSTRAP_HDRS_DIR := $(LIBBPF_BOOTSTRA
35 LIBBPF_BOOTSTRAP := $(LIBBPF_BOOTSTRAP_OUTPUT)
36
37 # We need to copy hashmap.h, nlattr.h, relo_co
38 # which are not otherwise exported by libbpf,
39 LIBBPF_INTERNAL_HDRS := $(addprefix $(LIBBPF_H
40 LIBBPF_BOOTSTRAP_INTERNAL_HDRS := $(addprefix
41
42 $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) $(LIBBPF_
43 $(QUIET_MKDIR)mkdir -p $@
44
45 $(LIBBPF): $(wildcard $(BPF_DIR)/*.[ch] $(BPF_
46 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIB
47 DESTDIR=$(LIBBPF_DESTDIR:/=) p
48
49 $(LIBBPF_INTERNAL_HDRS): $(LIBBPF_HDRS_DIR)/%.
50 $(call QUIET_INSTALL, $@)
51 $(Q)install -m 644 -t $(LIBBPF_HDRS_DI
52
53 $(LIBBPF_BOOTSTRAP): $(wildcard $(BPF_DIR)/*.[
54 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIB
55 DESTDIR=$(LIBBPF_BOOTSTRAP_DES
56 ARCH= CROSS_COMPILE= CC="$(HOS
57
58 $(LIBBPF_BOOTSTRAP_INTERNAL_HDRS): $(LIBBPF_BO
59 $(call QUIET_INSTALL, $@)
60 $(Q)install -m 644 -t $(LIBBPF_BOOTSTR
61
62 $(LIBBPF)-clean: FORCE | $(LIBBPF_OUTPUT)
63 $(call QUIET_CLEAN, libbpf)
64 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIB
65
66 $(LIBBPF_BOOTSTRAP)-clean: FORCE | $(LIBBPF_BO
67 $(call QUIET_CLEAN, libbpf-bootstrap)
68 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIB
69
70 prefix ?= /usr/local
71 bash_compdir ?= /usr/share/bash-completion/com
72
73 CFLAGS += -O2
74 CFLAGS += -W -Wall -Wextra -Wno-unused-paramet
75 CFLAGS += $(filter-out -Wswitch-enum -Wnested-
76 CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_H
77 -I$(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='"$(BPFTOOL_VERSIO
84 endif
85 ifneq ($(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$
93 $(subst $(CLANG_CROSS_FLAGS),,
94 HOST_LDFLAGS := $(LDFLAGS)
95
96 INSTALL ?= install
97 RM ?= rm -f
98
99 FEATURE_USER = .bpftool
100
101 FEATURE_TESTS := clang-bpf-co-re
102 FEATURE_TESTS += llvm
103 FEATURE_TESTS += libcap
104 FEATURE_TESTS += libbfd
105 FEATURE_TESTS += libbfd-liberty
106 FEATURE_TESTS += libbfd-liberty-z
107 FEATURE_TESTS += disassembler-four-args
108 FEATURE_TESTS += disassembler-init-styled
109
110 FEATURE_DISPLAY := clang-bpf-co-re
111 FEATURE_DISPLAY += llvm
112 FEATURE_DISPLAY += libcap
113 FEATURE_DISPLAY += libbfd
114 FEATURE_DISPLAY += libbfd-liberty
115 FEATURE_DISPLAY += libbfd-liberty-z
116
117 check_feat := 1
118 NON_CHECK_FEAT_TARGETS := clean uninstall doc
119 ifdef MAKECMDGOALS
120 ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$
121 check_feat := 0
122 endif
123 endif
124
125 ifeq ($(check_feat),1)
126 ifeq ($(FEATURES_DUMP),)
127 include $(srctree)/tools/build/Makefile.featur
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 disas
148 CFLAGS += -DHAVE_LLVM_SUPPORT
149 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler
150 CFLAGS += $(shell $(LLVM_CONFIG) --cflags)
151 LIBS += $(shell $(LLVM_CONFIG) --libs $(L
152 ifeq ($(shell $(LLVM_CONFIG) --shared-mode),
153 LIBS += $(shell $(LLVM_CONFIG) --system-li
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 i
168 ifneq ($(filter -lbfd,$(LIBS)),)
169 CFLAGS += -DHAVE_LIBBFD_SUPPORT
170
171 # Libbfd interface changed over time, figu
172 ifeq ($(feature-disassembler-four-args), 1
173 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
174 endif
175 ifeq ($(feature-disassembler-init-styled),
176 CFLAGS += -DDISASM_INIT_STYLED
177 endif
178 endif
179 endif
180 ifeq ($(filter -DHAVE_LLVM_SUPPORT -DHAVE_LIBB
181 # No support for JIT disassembly
182 SRCS := $(filter-out jit_disasm.c,$(SRCS))
183 endif
184
185 BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftoo
186
187 BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPU
188 $(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP)
189
190 OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(
191 $(OBJS): $(LIBBPF) $(LIBBPF_INTERNAL_HDRS)
192
193 VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)
194 $(if $(KBUILD_OUTPUT),$(K
195 ../../../vmlinux
196 /sys/kernel/btf/vmlinux
197 /boot/vmlinux-$(shell una
198 VMLINUX_BTF ?= $(abspath $(firstword $(wildcar
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_B
209 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf d
210 else
211 $(OUTPUT)vmlinux.h: $(VMLINUX_H)
212 $(Q)cp "$(VMLINUX_H)" $@
213 endif
214
215 $(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vm
216 $(QUIET_CLANG)$(CLANG) \
217 -I$(or $(OUTPUT),.) \
218 -I$(srctree)/tools/include/uap
219 -I$(LIBBPF_BOOTSTRAP_INCLUDE)
220 -g -O2 -Wall -fno-stack-protec
221 --target=bpf -c $< -o $@
222 $(Q)$(LLVM_STRIP) -g $@
223
224 $(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_
225 $(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen s
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_W
235
236 $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disas
237 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $<
238
239 $(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBB
240 $(QUIET_LINK)$(HOSTCC) $(HOST_CFLAGS)
241
242 $(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
243 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS
244
245 $(BOOTSTRAP_OUTPUT)%.o: %.c $(LIBBPF_BOOTSTRAP
246 $(QUIET_CC)$(HOSTCC) $(HOST_CFLAGS) -c
247
248 $(OUTPUT)%.o: %.c
249 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $<
250
251 feature-detect-clean:
252 $(call QUIET_CLEAN, feature-detect)
253 $(Q)$(MAKE) -C $(srctree)/tools/build/
254
255 clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-cle
256 $(call QUIET_CLEAN, bpftool)
257 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT
258 $(Q)$(RM) -- $(OUTPUT)*.skel.h $(OUTPU
259 $(Q)$(RM) -r -- $(LIBBPF_OUTPUT) $(BOO
260 $(call QUIET_CLEAN, core-gen)
261 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpf
262 $(Q)$(RM) -r -- $(OUTPUT)feature/
263
264 install-bin: $(OUTPUT)bpftool
265 $(call QUIET_INSTALL, bpftool)
266 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(
267 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DEST
268
269 install: install-bin
270 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(
271 $(Q)$(INSTALL) -m 0644 bash-completion
272
273 uninstall:
274 $(call QUIET_UNINST, bpftool)
275 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/
276 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)
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
294 .PHONY: doc doc-clean doc-install doc-uninstal
295 .DEFAULT_GOAL := all
296
297 # Delete partially updated (corrupted) files o
298 .DELETE_ON_ERROR:
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