1 # SPDX-License-Identifier: (GPL-2.0-only OR BS <<
2 include ../../scripts/Makefile.include 1 include ../../scripts/Makefile.include
3 2
>> 3 include ../../scripts/utilities.mak
>> 4
4 ifeq ($(srctree),) 5 ifeq ($(srctree),)
5 srctree := $(patsubst %/,%,$(dir $(CURDIR))) 6 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
6 srctree := $(patsubst %/,%,$(dir $(srctree))) 7 srctree := $(patsubst %/,%,$(dir $(srctree)))
7 srctree := $(patsubst %/,%,$(dir $(srctree))) 8 srctree := $(patsubst %/,%,$(dir $(srctree)))
>> 9 #$(info Determined 'srctree' to be $(srctree))
>> 10 endif
>> 11
>> 12 ifneq ($(objtree),)
>> 13 #$(info Determined 'objtree' to be $(objtree))
>> 14 endif
>> 15
>> 16 ifneq ($(OUTPUT),)
>> 17 #$(info Determined 'OUTPUT' to be $(OUTPUT))
>> 18 # Adding $(OUTPUT) as a directory to look for source files,
>> 19 # because use generated output files as sources dependency
>> 20 # for flex/bison parsers.
>> 21 VPATH += $(OUTPUT)
>> 22 export VPATH
8 endif 23 endif
9 24
10 ifeq ($(V),1) 25 ifeq ($(V),1)
11 Q = 26 Q =
12 else 27 else
13 Q = @ 28 Q = @
14 endif 29 endif
15 30
16 BPF_DIR = $(srctree)/tools/lib/bpf !! 31 BPF_DIR = $(srctree)/tools/lib/bpf/
17 32
18 ifneq ($(OUTPUT),) 33 ifneq ($(OUTPUT),)
19 _OUTPUT := $(OUTPUT) !! 34 BPF_PATH=$(OUTPUT)
20 else 35 else
21 _OUTPUT := $(CURDIR)/ !! 36 BPF_PATH=$(BPF_DIR)
22 endif 37 endif
23 BOOTSTRAP_OUTPUT := $(_OUTPUT)bootstrap/ <<
24 38
25 LIBBPF_OUTPUT := $(_OUTPUT)libbpf/ !! 39 LIBBPF = $(BPF_PATH)libbpf.a
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 40
62 $(LIBBPF)-clean: FORCE | $(LIBBPF_OUTPUT) !! 41 $(LIBBPF): FORCE
63 $(call QUIET_CLEAN, libbpf) !! 42 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(OUTPUT) $(OUTPUT)libbpf.a FEATURES_DUMP=$(FEATURE_DUMP_EXPORT)
64 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIB <<
65 43
66 $(LIBBPF_BOOTSTRAP)-clean: FORCE | $(LIBBPF_BO !! 44 $(LIBBPF)-clean:
67 $(call QUIET_CLEAN, libbpf-bootstrap) !! 45 $(call QUIET_CLEAN, libbpf)
68 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIB !! 46 $(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(OUTPUT) clean >/dev/null
69 47
70 prefix ?= /usr/local !! 48 prefix = /usr/local
71 bash_compdir ?= /usr/share/bash-completion/com 49 bash_compdir ?= /usr/share/bash-completion/completions
72 50
73 CFLAGS += -O2 !! 51 CC = gcc
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 52
92 HOST_CFLAGS := $(subst -I$(LIBBPF_INCLUDE),-I$ !! 53 CFLAGS += -O2
93 $(subst $(CLANG_CROSS_FLAGS),, !! 54 CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wshadow
94 HOST_LDFLAGS := $(LDFLAGS) !! 55 CFLAGS += -D__EXPORTED_HEADERS__ -I$(srctree)/tools/include/uapi -I$(srctree)/tools/include -I$(srctree)/tools/lib/bpf -I$(srctree)/kernel/bpf/
95 !! 56 LIBS = -lelf -lbfd -lopcodes $(LIBBPF)
96 INSTALL ?= install <<
97 RM ?= rm -f <<
98 <<
99 FEATURE_USER = .bpftool <<
100 <<
101 FEATURE_TESTS := clang-bpf-co-re <<
102 FEATURE_TESTS += llvm <<
103 FEATURE_TESTS += libcap <<
104 FEATURE_TESTS += libbfd <<
105 FEATURE_TESTS += libbfd-liberty <<
106 FEATURE_TESTS += libbfd-liberty-z <<
107 FEATURE_TESTS += disassembler-four-args <<
108 FEATURE_TESTS += disassembler-init-styled <<
109 <<
110 FEATURE_DISPLAY := clang-bpf-co-re <<
111 FEATURE_DISPLAY += llvm <<
112 FEATURE_DISPLAY += libcap <<
113 FEATURE_DISPLAY += libbfd <<
114 FEATURE_DISPLAY += libbfd-liberty <<
115 FEATURE_DISPLAY += libbfd-liberty-z <<
116 <<
117 check_feat := 1 <<
118 NON_CHECK_FEAT_TARGETS := clean uninstall doc <<
119 ifdef MAKECMDGOALS <<
120 ifeq ($(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 57
140 include $(wildcard $(OUTPUT)*.d) !! 58 include $(wildcard *.d)
141 59
142 all: $(OUTPUT)bpftool 60 all: $(OUTPUT)bpftool
143 61
144 SRCS := $(wildcard *.c) !! 62 SRCS=$(wildcard *.c)
145 !! 63 OBJS=$(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
146 ifeq ($(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 64
236 $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disas 65 $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
237 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< !! 66 $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<
238 <<
239 $(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBB <<
240 $(QUIET_LINK)$(HOSTCC) $(HOST_CFLAGS) <<
241 67
242 $(OUTPUT)bpftool: $(OBJS) $(LIBBPF) 68 $(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
243 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS !! 69 $(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
244 <<
245 $(BOOTSTRAP_OUTPUT)%.o: %.c $(LIBBPF_BOOTSTRAP <<
246 $(QUIET_CC)$(HOSTCC) $(HOST_CFLAGS) -c <<
247 70
248 $(OUTPUT)%.o: %.c 71 $(OUTPUT)%.o: %.c
249 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD $< !! 72 $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<
250 <<
251 feature-detect-clean: <<
252 $(call QUIET_CLEAN, feature-detect) <<
253 $(Q)$(MAKE) -C $(srctree)/tools/build/ <<
254 73
255 clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-cle !! 74 clean: $(LIBBPF)-clean
256 $(call QUIET_CLEAN, bpftool) 75 $(call QUIET_CLEAN, bpftool)
257 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT !! 76 $(Q)rm -rf $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d
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 77
278 doc: !! 78 install:
279 $(call descend,Documentation) !! 79 install -m 0755 -d $(prefix)/sbin
>> 80 install $(OUTPUT)bpftool $(prefix)/sbin/bpftool
>> 81 install -m 0755 -d $(bash_compdir)
>> 82 install -m 0644 bash-completion/bpftool $(bash_compdir)
280 83
281 doc-clean: !! 84 doc:
282 $(call descend,Documentation,clean) !! 85 $(Q)$(MAKE) -C Documentation/
283 86
284 doc-install: 87 doc-install:
285 $(call descend,Documentation,install) !! 88 $(Q)$(MAKE) -C Documentation/ install
286 <<
287 doc-uninstall: <<
288 $(call descend,Documentation,uninstall <<
289 89
290 FORCE: 90 FORCE:
291 91
292 .SECONDARY: !! 92 .PHONY: all clean FORCE install doc doc-install
293 .PHONY: all FORCE bootstrap clean install-bin <<
294 .PHONY: doc doc-clean doc-install doc-uninstal <<
295 .DEFAULT_GOAL := all 93 .DEFAULT_GOAL := all
296 <<
297 # Delete partially updated (corrupted) files o <<
298 .DELETE_ON_ERROR: <<
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