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 \ 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 = $(LIBBPF) -lelf -lz 59 60INSTALL ?= install 61RM ?= rm -f 62CLANG ?= clang 63 64FEATURE_USER = .bpftool 65FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib \ 66 clang-bpf-global-var 67FEATURE_DISPLAY = libbfd disassembler-four-args zlib clang-bpf-global-var 68 69check_feat := 1 70NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall 71ifdef MAKECMDGOALS 72ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),) 73 check_feat := 0 74endif 75endif 76 77ifeq ($(check_feat),1) 78ifeq ($(FEATURES_DUMP),) 79include $(srctree)/tools/build/Makefile.feature 80else 81include $(FEATURES_DUMP) 82endif 83endif 84 85ifeq ($(feature-disassembler-four-args), 1) 86CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE 87endif 88 89ifeq ($(feature-reallocarray), 0) 90CFLAGS += -DCOMPAT_NEED_REALLOCARRAY 91endif 92 93include $(wildcard $(OUTPUT)*.d) 94 95all: $(OUTPUT)bpftool 96 97BFD_SRCS = jit_disasm.c 98 99SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c)) 100 101ifeq ($(feature-libbfd),1) 102 LIBS += -lbfd -ldl -lopcodes 103else ifeq ($(feature-libbfd-liberty),1) 104 LIBS += -lbfd -ldl -lopcodes -liberty 105else ifeq ($(feature-libbfd-liberty-z),1) 106 LIBS += -lbfd -ldl -lopcodes -liberty -lz 107endif 108 109ifneq ($(filter -lbfd,$(LIBS)),) 110CFLAGS += -DHAVE_LIBBFD_SUPPORT 111SRCS += $(BFD_SRCS) 112endif 113 114OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o 115_OBJS = $(filter-out $(OUTPUT)prog.o,$(OBJS)) $(OUTPUT)_prog.o 116 117ifeq ($(feature-clang-bpf-global-var),1) 118 __OBJS = $(OBJS) 119else 120 __OBJS = $(_OBJS) 121endif 122 123$(OUTPUT)_prog.o: prog.c 124 $(QUIET_CC)$(COMPILE.c) -MMD -DBPFTOOL_WITHOUT_SKELETONS -o $@ $< 125 126$(OUTPUT)_bpftool: $(_OBJS) $(LIBBPF) 127 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(_OBJS) $(LIBS) 128 129skeleton/profiler.bpf.o: skeleton/profiler.bpf.c $(LIBBPF) 130 $(QUIET_CLANG)$(CLANG) \ 131 -I$(srctree)/tools/include/uapi/ \ 132 -I$(LIBBPF_PATH) -I$(srctree)/tools/lib \ 133 -g -O2 -target bpf -c $< -o $@ 134 135profiler.skel.h: $(OUTPUT)_bpftool skeleton/profiler.bpf.o 136 $(QUIET_GEN)$(OUTPUT)./_bpftool gen skeleton skeleton/profiler.bpf.o > $@ 137 138$(OUTPUT)prog.o: prog.c profiler.skel.h 139 $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $< 140 141$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c 142 $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $< 143 144$(OUTPUT)feature.o: | zdep 145 146$(OUTPUT)bpftool: $(__OBJS) $(LIBBPF) 147 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(__OBJS) $(LIBS) 148 149$(OUTPUT)%.o: %.c 150 $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $< 151 152clean: $(LIBBPF)-clean 153 $(call QUIET_CLEAN, bpftool) 154 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d 155 $(Q)$(RM) -- $(OUTPUT)_bpftool profiler.skel.h skeleton/profiler.bpf.o 156 $(Q)$(RM) -r -- $(OUTPUT)libbpf/ 157 $(call QUIET_CLEAN, core-gen) 158 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool 159 $(Q)$(RM) -r -- $(OUTPUT)feature/ 160 161install: $(OUTPUT)bpftool 162 $(call QUIET_INSTALL, bpftool) 163 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin 164 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool 165 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir) 166 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir) 167 168uninstall: 169 $(call QUIET_UNINST, bpftool) 170 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool 171 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool 172 173doc: 174 $(call descend,Documentation) 175 176doc-clean: 177 $(call descend,Documentation,clean) 178 179doc-install: 180 $(call descend,Documentation,install) 181 182doc-uninstall: 183 $(call descend,Documentation,uninstall) 184 185FORCE: 186 187zdep: 188 @if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi 189 190.PHONY: all FORCE clean install uninstall zdep 191.PHONY: doc doc-clean doc-install doc-uninstall 192.DEFAULT_GOAL := all 193