xref: /linux/tools/bpf/bpftool/Makefile (revision 0b46b755056043dccfe078b96b256502b88f2464) 
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)
22  BOOTSTRAP_OUTPUT = $(OUTPUT)/bootstrap/
23else
24  LIBBPF_OUTPUT =
25  LIBBPF_PATH = $(BPF_DIR)
26  BOOTSTRAP_OUTPUT = $(CURDIR)/bootstrap/
27endif
28
29LIBBPF = $(LIBBPF_PATH)libbpf.a
30LIBBPF_BOOTSTRAP_OUTPUT = $(BOOTSTRAP_OUTPUT)libbpf/
31LIBBPF_BOOTSTRAP = $(LIBBPF_BOOTSTRAP_OUTPUT)libbpf.a
32
33ifeq ($(BPFTOOL_VERSION),)
34BPFTOOL_VERSION := $(shell make -rR --no-print-directory -sC ../../.. kernelversion)
35endif
36
37$(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) $(LIBBPF_BOOTSTRAP_OUTPUT):
38	$(QUIET_MKDIR)mkdir -p $@
39
40$(LIBBPF): FORCE | $(LIBBPF_OUTPUT)
41	$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) $(LIBBPF_OUTPUT)libbpf.a
42
43$(LIBBPF_BOOTSTRAP): FORCE | $(LIBBPF_BOOTSTRAP_OUTPUT)
44	$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) \
45		ARCH= CC=$(HOSTCC) LD=$(HOSTLD) $@
46
47$(LIBBPF)-clean: FORCE | $(LIBBPF_OUTPUT)
48	$(call QUIET_CLEAN, libbpf)
49	$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) clean >/dev/null
50
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
54
55prefix ?= /usr/local
56bash_compdir ?= /usr/share/bash-completion/completions
57
58CFLAGS += -O2
59CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
60CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))
61CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
62	-I$(if $(OUTPUT),$(OUTPUT),.) \
63	$(if $(LIBBPF_OUTPUT),-I$(LIBBPF_OUTPUT)) \
64	-I$(srctree)/kernel/bpf/ \
65	-I$(srctree)/tools/include \
66	-I$(srctree)/tools/include/uapi \
67	-I$(srctree)/tools/lib \
68	-I$(srctree)/tools/perf
69CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
70ifneq ($(EXTRA_CFLAGS),)
71CFLAGS += $(EXTRA_CFLAGS)
72endif
73ifneq ($(EXTRA_LDFLAGS),)
74LDFLAGS += $(EXTRA_LDFLAGS)
75endif
76
77INSTALL ?= install
78RM ?= rm -f
79
80FEATURE_USER = .bpftool
81FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \
82	clang-bpf-co-re
83FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \
84	clang-bpf-co-re
85
86check_feat := 1
87NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
88ifdef MAKECMDGOALS
89ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
90  check_feat := 0
91endif
92endif
93
94ifeq ($(check_feat),1)
95ifeq ($(FEATURES_DUMP),)
96include $(srctree)/tools/build/Makefile.feature
97else
98include $(FEATURES_DUMP)
99endif
100endif
101
102ifeq ($(feature-disassembler-four-args), 1)
103CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
104endif
105
106ifeq ($(feature-reallocarray), 0)
107CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
108endif
109
110LIBS = $(LIBBPF) -lelf -lz
111LIBS_BOOTSTRAP = $(LIBBPF_BOOTSTRAP) -lelf -lz
112ifeq ($(feature-libcap), 1)
113CFLAGS += -DUSE_LIBCAP
114LIBS += -lcap
115endif
116
117include $(wildcard $(OUTPUT)*.d)
118
119all: $(OUTPUT)bpftool
120
121BFD_SRCS = jit_disasm.c
122
123SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c))
124
125ifeq ($(feature-libbfd),1)
126  LIBS += -lbfd -ldl -lopcodes
127else ifeq ($(feature-libbfd-liberty),1)
128  LIBS += -lbfd -ldl -lopcodes -liberty
129else ifeq ($(feature-libbfd-liberty-z),1)
130  LIBS += -lbfd -ldl -lopcodes -liberty -lz
131endif
132
133ifneq ($(filter -lbfd,$(LIBS)),)
134CFLAGS += -DHAVE_LIBBFD_SUPPORT
135SRCS += $(BFD_SRCS)
136endif
137
138BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool
139
140BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o xlated_dumper.o btf_dumper.o disasm.o)
141$(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP)
142
143OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
144$(OBJS): $(LIBBPF)
145
146VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)				\
147		     $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)	\
148		     ../../../vmlinux					\
149		     /sys/kernel/btf/vmlinux				\
150		     /boot/vmlinux-$(shell uname -r)
151VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
152
153bootstrap: $(BPFTOOL_BOOTSTRAP)
154
155ifneq ($(VMLINUX_BTF)$(VMLINUX_H),)
156ifeq ($(feature-clang-bpf-co-re),1)
157
158BUILD_BPF_SKELS := 1
159
160$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
161ifeq ($(VMLINUX_H),)
162	$(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@
163else
164	$(Q)cp "$(VMLINUX_H)" $@
165endif
166
167$(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF)
168	$(QUIET_CLANG)$(CLANG) \
169		-I$(if $(OUTPUT),$(OUTPUT),.) \
170		-I$(srctree)/tools/include/uapi/ \
171		-I$(LIBBPF_PATH) \
172		-I$(srctree)/tools/lib \
173		-g -O2 -Wall -target bpf -c $< -o $@ && $(LLVM_STRIP) -g $@
174
175$(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)
176	$(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) gen skeleton $< > $@
177
178$(OUTPUT)prog.o: $(OUTPUT)profiler.skel.h
179
180$(OUTPUT)pids.o: $(OUTPUT)pid_iter.skel.h
181
182endif
183endif
184
185CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS)
186
187$(BOOTSTRAP_OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
188	$(QUIET_CC)$(HOSTCC) $(CFLAGS) -c -MMD -o $@ $<
189
190$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
191	$(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $<
192
193$(OUTPUT)feature.o: | zdep
194
195$(BPFTOOL_BOOTSTRAP): $(BOOTSTRAP_OBJS) $(LIBBPF_BOOTSTRAP)
196	$(QUIET_LINK)$(HOSTCC) $(CFLAGS) $(LDFLAGS) -o $@ $(BOOTSTRAP_OBJS) \
197		$(LIBS_BOOTSTRAP)
198
199$(OUTPUT)bpftool: $(OBJS) $(LIBBPF)
200	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
201
202$(BOOTSTRAP_OUTPUT)%.o: %.c | $(BOOTSTRAP_OUTPUT)
203	$(QUIET_CC)$(HOSTCC) $(CFLAGS) -c -MMD -o $@ $<
204
205$(OUTPUT)%.o: %.c
206	$(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $<
207
208feature-detect-clean:
209	$(call QUIET_CLEAN, feature-detect)
210	$(Q)$(MAKE) -C $(srctree)/tools/build/feature/ clean >/dev/null
211
212clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-clean feature-detect-clean
213	$(call QUIET_CLEAN, bpftool)
214	$(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d
215	$(Q)$(RM) -- $(OUTPUT)*.skel.h $(OUTPUT)vmlinux.h
216	$(Q)$(RM) -r -- $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT)
217	$(call QUIET_CLEAN, core-gen)
218	$(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool
219	$(Q)$(RM) -r -- $(OUTPUT)feature/
220
221install: $(OUTPUT)bpftool
222	$(call QUIET_INSTALL, bpftool)
223	$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin
224	$(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool
225	$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)
226	$(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)
227
228uninstall:
229	$(call QUIET_UNINST, bpftool)
230	$(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
231	$(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
232
233doc:
234	$(call descend,Documentation)
235
236doc-clean:
237	$(call descend,Documentation,clean)
238
239doc-install:
240	$(call descend,Documentation,install)
241
242doc-uninstall:
243	$(call descend,Documentation,uninstall)
244
245FORCE:
246
247zdep:
248	@if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi
249
250.SECONDARY:
251.PHONY: all FORCE clean install uninstall zdep
252.PHONY: doc doc-clean doc-install doc-uninstall
253.DEFAULT_GOAL := all
254