linux/tools/bpf/Makefile
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   1# SPDX-License-Identifier: GPL-2.0
   2include ../scripts/Makefile.include
   3
   4prefix ?= /usr/local
   5
   6LEX = flex
   7YACC = bison
   8MAKE = make
   9INSTALL ?= install
  10
  11CFLAGS += -Wall -O2
  12CFLAGS += -D__EXPORTED_HEADERS__ -I$(srctree)/tools/include/uapi \
  13          -I$(srctree)/tools/include
  14
  15# This will work when bpf is built in tools env. where srctree
  16# isn't set and when invoked from selftests build, where srctree
  17# is set to ".". building_out_of_srctree is undefined for in srctree
  18# builds
  19ifeq ($(srctree),)
  20update_srctree := 1
  21endif
  22ifndef building_out_of_srctree
  23update_srctree := 1
  24endif
  25ifeq ($(update_srctree),1)
  26srctree := $(patsubst %/,%,$(dir $(CURDIR)))
  27srctree := $(patsubst %/,%,$(dir $(srctree)))
  28endif
  29
  30ifeq ($(V),1)
  31  Q =
  32else
  33  Q = @
  34endif
  35
  36FEATURE_USER = .bpf
  37FEATURE_TESTS = libbfd disassembler-four-args
  38FEATURE_DISPLAY = libbfd disassembler-four-args
  39
  40check_feat := 1
  41NON_CHECK_FEAT_TARGETS := clean bpftool_clean runqslower_clean resolve_btfids_clean
  42ifdef MAKECMDGOALS
  43ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
  44  check_feat := 0
  45endif
  46endif
  47
  48ifeq ($(check_feat),1)
  49ifeq ($(FEATURES_DUMP),)
  50include $(srctree)/tools/build/Makefile.feature
  51else
  52include $(FEATURES_DUMP)
  53endif
  54endif
  55
  56ifeq ($(feature-disassembler-four-args), 1)
  57CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
  58endif
  59
  60$(OUTPUT)%.yacc.c: $(srctree)/tools/bpf/%.y
  61        $(QUIET_BISON)$(YACC) -o $@ -d $<
  62
  63$(OUTPUT)%.lex.c: $(srctree)/tools/bpf/%.l
  64        $(QUIET_FLEX)$(LEX) -o $@ $<
  65
  66$(OUTPUT)%.o: $(srctree)/tools/bpf/%.c
  67        $(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
  68
  69$(OUTPUT)%.yacc.o: $(OUTPUT)%.yacc.c
  70        $(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
  71$(OUTPUT)%.lex.o: $(OUTPUT)%.lex.c
  72        $(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
  73
  74PROGS = $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg $(OUTPUT)bpf_asm
  75
  76all: $(PROGS) bpftool runqslower
  77
  78$(OUTPUT)bpf_jit_disasm: CFLAGS += -DPACKAGE='bpf_jit_disasm'
  79$(OUTPUT)bpf_jit_disasm: $(OUTPUT)bpf_jit_disasm.o
  80        $(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lopcodes -lbfd -ldl
  81
  82$(OUTPUT)bpf_dbg: $(OUTPUT)bpf_dbg.o
  83        $(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lreadline
  84
  85$(OUTPUT)bpf_asm: $(OUTPUT)bpf_asm.o $(OUTPUT)bpf_exp.yacc.o $(OUTPUT)bpf_exp.lex.o
  86        $(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^
  87
  88$(OUTPUT)bpf_exp.lex.c: $(OUTPUT)bpf_exp.yacc.c
  89$(OUTPUT)bpf_exp.yacc.o: $(OUTPUT)bpf_exp.yacc.c
  90$(OUTPUT)bpf_exp.lex.o: $(OUTPUT)bpf_exp.lex.c
  91
  92clean: bpftool_clean runqslower_clean resolve_btfids_clean
  93        $(call QUIET_CLEAN, bpf-progs)
  94        $(Q)$(RM) -r -- $(OUTPUT)*.o $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg \
  95               $(OUTPUT)bpf_asm $(OUTPUT)bpf_exp.yacc.* $(OUTPUT)bpf_exp.lex.*
  96        $(call QUIET_CLEAN, core-gen)
  97        $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpf
  98        $(Q)$(RM) -r -- $(OUTPUT)feature
  99
 100install: $(PROGS) bpftool_install
 101        $(call QUIET_INSTALL, bpf_jit_disasm)
 102        $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/bin
 103        $(Q)$(INSTALL) $(OUTPUT)bpf_jit_disasm $(DESTDIR)$(prefix)/bin/bpf_jit_disasm
 104        $(call QUIET_INSTALL, bpf_dbg)
 105        $(Q)$(INSTALL) $(OUTPUT)bpf_dbg $(DESTDIR)$(prefix)/bin/bpf_dbg
 106        $(call QUIET_INSTALL, bpf_asm)
 107        $(Q)$(INSTALL) $(OUTPUT)bpf_asm $(DESTDIR)$(prefix)/bin/bpf_asm
 108
 109bpftool:
 110        $(call descend,bpftool)
 111
 112bpftool_install:
 113        $(call descend,bpftool,install)
 114
 115bpftool_clean:
 116        $(call descend,bpftool,clean)
 117
 118runqslower:
 119        $(call descend,runqslower)
 120
 121runqslower_clean:
 122        $(call descend,runqslower,clean)
 123
 124resolve_btfids:
 125        $(call descend,resolve_btfids)
 126
 127resolve_btfids_clean:
 128        $(call descend,resolve_btfids,clean)
 129
 130.PHONY: all install clean bpftool bpftool_install bpftool_clean \
 131        runqslower runqslower_clean \
 132        resolve_btfids resolve_btfids_clean
 133