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 += $(EXTRA_LDFLAGS) 56endif 57 58INSTALL ?= install 59RM ?= rm -f 60CLANG ?= clang 61 62FEATURE_USER = .bpftool 63FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \ 64 clang-bpf-global-var 65FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \ 66 clang-bpf-global-var 67 68check_feat := 1 69NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall 70ifdef MAKECMDGOALS 71ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),) 72 check_feat := 0 73endif 74endif 75 76ifeq ($(check_feat),1) 77ifeq ($(FEATURES_DUMP),) 78include $(srctree)/tools/build/Makefile.feature 79else 80include $(FEATURES_DUMP) 81endif 82endif 83 84ifeq ($(feature-disassembler-four-args), 1) 85CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE 86endif 87 88ifeq ($(feature-reallocarray), 0) 89CFLAGS += -DCOMPAT_NEED_REALLOCARRAY 90endif 91 92LIBS = $(LIBBPF) -lelf -lz 93ifeq ($(feature-libcap), 1) 94CFLAGS += -DUSE_LIBCAP 95LIBS += -lcap 96endif 97 98include $(wildcard $(OUTPUT)*.d) 99 100all: $(OUTPUT)bpftool 101 102BFD_SRCS = jit_disasm.c 103 104SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c)) 105 106ifeq ($(feature-libbfd),1) 107 LIBS += -lbfd -ldl -lopcodes 108else ifeq ($(feature-libbfd-liberty),1) 109 LIBS += -lbfd -ldl -lopcodes -liberty 110else ifeq ($(feature-libbfd-liberty-z),1) 111 LIBS += -lbfd -ldl -lopcodes -liberty -lz 112endif 113 114ifneq ($(filter -lbfd,$(LIBS)),) 115CFLAGS += -DHAVE_LIBBFD_SUPPORT 116SRCS += $(BFD_SRCS) 117endif 118 119OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o 120_OBJS = $(filter-out $(OUTPUT)prog.o,$(OBJS)) $(OUTPUT)_prog.o 121 122ifeq ($(feature-clang-bpf-global-var),1) 123 __OBJS = $(OBJS) 124else 125 __OBJS = $(_OBJS) 126endif 127 128$(OUTPUT)_prog.o: prog.c 129 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -DBPFTOOL_WITHOUT_SKELETONS -o $@ $< 130 131$(OUTPUT)_bpftool: $(_OBJS) $(LIBBPF) 132 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(_OBJS) $(LIBS) 133 134skeleton/profiler.bpf.o: skeleton/profiler.bpf.c $(LIBBPF) 135 $(QUIET_CLANG)$(CLANG) \ 136 -I$(srctree)/tools/include/uapi/ \ 137 -I$(LIBBPF_PATH) -I$(srctree)/tools/lib \ 138 -g -O2 -target bpf -c $< -o $@ 139 140profiler.skel.h: $(OUTPUT)_bpftool skeleton/profiler.bpf.o 141 $(QUIET_GEN)$(OUTPUT)./_bpftool gen skeleton skeleton/profiler.bpf.o > $@ 142 143$(OUTPUT)prog.o: prog.c profiler.skel.h 144 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $< 145 146$(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c 147 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $< 148 149$(OUTPUT)feature.o: | zdep 150 151$(OUTPUT)bpftool: $(__OBJS) $(LIBBPF) 152 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(__OBJS) $(LIBS) 153 154$(OUTPUT)%.o: %.c 155 $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $< 156 157clean: $(LIBBPF)-clean 158 $(call QUIET_CLEAN, bpftool) 159 $(Q)$(RM) -- $(OUTPUT)bpftool $(OUTPUT)*.o $(OUTPUT)*.d 160 $(Q)$(RM) -- $(OUTPUT)_bpftool profiler.skel.h skeleton/profiler.bpf.o 161 $(Q)$(RM) -r -- $(OUTPUT)libbpf/ 162 $(call QUIET_CLEAN, core-gen) 163 $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool 164 $(Q)$(RM) -r -- $(OUTPUT)feature/ 165 166install: $(OUTPUT)bpftool 167 $(call QUIET_INSTALL, bpftool) 168 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin 169 $(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool 170 $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir) 171 $(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir) 172 173uninstall: 174 $(call QUIET_UNINST, bpftool) 175 $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool 176 $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool 177 178doc: 179 $(call descend,Documentation) 180 181doc-clean: 182 $(call descend,Documentation,clean) 183 184doc-install: 185 $(call descend,Documentation,install) 186 187doc-uninstall: 188 $(call descend,Documentation,uninstall) 189 190FORCE: 191 192zdep: 193 @if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi 194 195.PHONY: all FORCE clean install uninstall zdep 196.PHONY: doc doc-clean doc-install doc-uninstall 197.DEFAULT_GOAL := all 198