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 = $(LIBBPF) -lelf -lz
  59
  60 INSTALL ?= install
  61 RM ?= rm -f
  62
  63 FEATURE_USER = .bpftool
  64 FEATURE_TESTS = libbfd disassembler-four-args reallocarray zlib
  65 FEATURE_DISPLAY = libbfd disassembler-four-args zlib
  66
  67 check_feat := 1
  68 NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall
  69 ifdef MAKECMDGOALS
  70 ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
  71   check_feat := 0
  72 endif
  73 endif
  74
  75 ifeq ($(check_feat),1)
  76 ifeq ($(FEATURES_DUMP),)
  77 include $(srctree)/tools/build/Makefile.feature
  78 else
  79 include $(FEATURES_DUMP)
  80 endif
  81 endif
  82
  83 ifeq ($(feature-disassembler-four-args), 1)
  84 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
  85 endif
  86
  87 ifeq ($(feature-reallocarray), 0)
  88 CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
  89 endif
  90
  91 include $(wildcard $(OUTPUT)*.d)
  92
  93 all: $(OUTPUT)bpftool
  94
  95 BFD_SRCS = jit_disasm.c
  96
  97 SRCS = $(filter-out $(BFD_SRCS),$(wildcard *.c))
  98
  99 ifeq ($(feature-libbfd),1)
 100   LIBS += -lbfd -ldl -lopcodes
 101 else ifeq ($(feature-libbfd-liberty),1)
 102   LIBS += -lbfd -ldl -lopcodes -liberty
 103 else ifeq ($(feature-libbfd-liberty-z),1)
 104   LIBS += -lbfd -ldl -lopcodes -liberty -lz
 105 endif
 106
 107 ifneq ($(filter -lbfd,$(LIBS)),)
 108 CFLAGS += -DHAVE_LIBBFD_SUPPORT
 109 SRCS += $(BFD_SRCS)
 110 endif
 111
 112 OBJS = $(patsubst %.c,$(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
 125 clean: $(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
 133 install: $(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
 140 uninstall:
 141         $(call QUIET_UNINST, bpftool)
 142         $(Q)$(RM) -- $(DESTDIR)$(prefix)/sbin/bpftool
 143         $(Q)$(RM) -- $(DESTDIR)$(bash_compdir)/bpftool
 144
 145 doc:
 146         $(call descend,Documentation)
 147
 148 doc-clean:
 149         $(call descend,Documentation,clean)
 150
 151 doc-install:
 152         $(call descend,Documentation,install)
 153
 154 doc-uninstall:
 155         $(call descend,Documentation,uninstall)
 156
 157 FORCE:
 158
 159 zdep:
 160         @if [ "$(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