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