tools/bpf/bpftool/Makefile

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 include ../../scripts/Makefile.include
   3 include ../../scripts/utilities.mak
   4
   5 ifeq ($(srctree),)
   6 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
   7 srctree := $(patsubst %/,%,$(dir $(srctree)))
   8 srctree := $(patsubst %/,%,$(dir $(srctree)))
   9 endif
  10
  11 ifeq ($(V),1)
  12   Q =
  13 else
  14   Q = @
  15 endif
  16
  17 BPF_DIR = $(srctree)/tools/lib/bpf/
  18
  19 ifneq ($(OUTPUT),)
  20   LIBBPF_OUTPUT = $(OUTPUT)/libbpf/
  21   LIBBPF_PATH = $(LIBBPF_OUTPUT)
  22 else
  23   LIBBPF_PATH = $(BPF_DIR)
  24 endif
  25
  26 LIBBPF = $(LIBBPF_PATH)libbpf.a
  27
  28 BPFTOOL_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
  38 prefix ?= /usr/local
  39 bash_compdir ?= /usr/share/bash-completion/completions
  40
  41 CFLAGS += -O2
  42 CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
  43 CFLAGS += $(filter-out -Wswitch-enum,$(EXTRA_WARNINGS))
  44 CFLAGS += -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$(srctree)/tools/perf
  50 CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
  51 ifneq ($(EXTRA_CFLAGS),)
  52 CFLAGS += $(EXTRA_CFLAGS)
  53 endif
  54 ifneq ($(EXTRA_LDFLAGS),)
  55 LDFLAGS += $(EXTRA_LDFLAGS)
  56 endif
  57
  58 INSTALL ?= install
  59 RM ?= rm -f
  60 CLANG ?= clang
  61
  62 FEATURE_USER = .bpftool
  63 FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib libcap \
  64         clang-bpf-global-var
  65 FEATURE_DISPLAY = libbfd disassembler-four-args zlib libcap \
  66         clang-bpf-global-var
  67
  68 check_feat := 1
  69 NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
  70 ifdef MAKECMDGOALS
  71 ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
  72   check_feat := 0
  73 endif
  74 endif
  75
  76 ifeq ($(check_feat),1)
  77 ifeq ($(FEATURES_DUMP),)
  78 include $(srctree)/tools/build/Makefile.feature
  79 else
  80 include $(FEATURES_DUMP)
  81 endif
  82 endif
  83
  84 ifeq ($(feature-disassembler-four-args), 1)
  85 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
  86 endif
  87
  88 ifeq ($(feature-reallocarray), 0)
  89 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
  90 endif
  91
  92 LIBS = $(LIBBPF) -lelf -lz
  93 ifeq ($(feature-libcap), 1)
  94 CFLAGS += -DUSE_LIBCAP
  95 LIBS += -lcap
  96 endif
  97
  98 include $(wildcard $(OUTPUT)*.d)
  99
 100 all: $(OUTPUT)bpftool
 101
 102 BFD_SRCS = jit_disasm.c
 103
 104 SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c))
 105
 106 ifeq ($(feature-libbfd),1)
 107   LIBS += -lbfd -ldl -lopcodes
 108 else ifeq ($(feature-libbfd-liberty),1)
 109   LIBS += -lbfd -ldl -lopcodes -liberty
 110 else ifeq ($(feature-libbfd-liberty-z),1)
 111   LIBS += -lbfd -ldl -lopcodes -liberty -lz
 112 endif
 113
 114 ifneq ($(filter -lbfd,$(LIBS)),)
 115 CFLAGS += -DHAVE_LIBBFD_SUPPORT
 116 SRCS += $(BFD_SRCS)
 117 endif
 118
 119 OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
 120 _OBJS = $(filter-out $(OUTPUT)prog.o,$(OBJS)) $(OUTPUT)_prog.o
 121
 122 ifeq ($(feature-clang-bpf-global-var),1)
 123         __OBJS = $(OBJS)
 124 else
 125         __OBJS = $(_OBJS)
 126 endif
 127
 128 $(OUTPUT)_prog.o: prog.c
 129         $(QUIET_CC)$(COMPILE.c) -MMD -DBPFTOOL_WITHOUT_SKELETONS -o $@ $<
 130
 131 $(OUTPUT)_bpftool: $(_OBJS) $(LIBBPF)
 132         $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(_OBJS) $(LIBS)
 133
 134 skeleton/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
 140 profiler.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         $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<
 145
 146 $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c
 147         $(QUIET_CC)$(COMPILE.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         $(QUIET_CC)$(COMPILE.c) -MMD -o $@ $<
 156
 157 clean: $(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
 166 install: $(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
 173 uninstall:
 174         $(call QUIET_UNINST, bpftool)
 175         $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
 176         $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
 177
 178 doc:
 179         $(call descend,Documentation)
 180
 181 doc-clean:
 182         $(call descend,Documentation,clean)
 183
 184 doc-install:
 185         $(call descend,Documentation,install)
 186
 187 doc-uninstall:
 188         $(call descend,Documentation,uninstall)
 189
 190 FORCE:
 191
 192 zdep:
 193         @if [ "$(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