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 LIBS = $(LIBBPF) -lelf -lz
  59
  60 INSTALL ?= install
  61 RM ?= rm -f
  62 CLANG ?= clang
  63
  64 FEATURE_USER = .bpftool
  65 FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib \
  66         clang-bpf-global-var
  67 FEATURE_DISPLAY = libbfd disassembler-four-args zlib clang-bpf-global-var
  68
  69 check_feat := 1
  70 NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
  71 ifdef MAKECMDGOALS
  72 ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
  73   check_feat := 0
  74 endif
  75 endif
  76
  77 ifeq ($(check_feat),1)
  78 ifeq ($(FEATURES_DUMP),)
  79 include $(srctree)/tools/build/Makefile.feature
  80 else
  81 include $(FEATURES_DUMP)
  82 endif
  83 endif
  84
  85 ifeq ($(feature-disassembler-four-args), 1)
  86 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
  87 endif
  88
  89 ifeq ($(feature-reallocarray), 0)
  90 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
  91 endif
  92
  93 include $(wildcard $(OUTPUT)*.d)
  94
  95 all: $(OUTPUT)bpftool
  96
  97 BFD_SRCS = jit_disasm.c
  98
  99 SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c))
 100
 101 ifeq ($(feature-libbfd),1)
 102   LIBS += -lbfd -ldl -lopcodes
 103 else ifeq ($(feature-libbfd-liberty),1)
 104   LIBS += -lbfd -ldl -lopcodes -liberty
 105 else ifeq ($(feature-libbfd-liberty-z),1)
 106   LIBS += -lbfd -ldl -lopcodes -liberty -lz
 107 endif
 108
 109 ifneq ($(filter -lbfd,$(LIBS)),)
 110 CFLAGS += -DHAVE_LIBBFD_SUPPORT
 111 SRCS += $(BFD_SRCS)
 112 endif
 113
 114 OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
 115 _OBJS = $(filter-out $(OUTPUT)prog.o,$(OBJS)) $(OUTPUT)_prog.o
 116
 117 ifeq ($(feature-clang-bpf-global-var),1)
 118         __OBJS = $(OBJS)
 119 else
 120         __OBJS = $(_OBJS)
 121 endif
 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
 129 skeleton/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
 135 profiler.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
 152 clean: $(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
 161 install: $(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
 168 uninstall:
 169         $(call QUIET_UNINST, bpftool)
 170         $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
 171         $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
 172
 173 doc:
 174         $(call descend,Documentation)
 175
 176 doc-clean:
 177         $(call descend,Documentation,clean)
 178
 179 doc-install:
 180         $(call descend,Documentation,install)
 181
 182 doc-uninstall:
 183         $(call descend,Documentation,uninstall)
 184
 185 FORCE:
 186
 187 zdep:
 188         @if [ "$(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