tools/bpf/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 include ../scripts/Makefile.include
   3
   4 prefix ?= /usr/local
   5
   6 LEX = flex
   7 YACC = bison
   8 MAKE = make
   9 INSTALL ?= install
  10
  11 CFLAGS += -Wall -O2
  12 CFLAGS += -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
  19 ifeq ($(srctree),)
  20 update_srctree := 1
  21 endif
  22 ifndef building_out_of_srctree
  23 update_srctree := 1
  24 endif
  25 ifeq ($(update_srctree),1)
  26 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
  27 srctree := $(patsubst %/,%,$(dir $(srctree)))
  28 endif
  29
  30 ifeq ($(V),1)
  31   Q =
  32 else
  33   Q = @
  34 endif
  35
  36 FEATURE_USER = .bpf
  37 FEATURE_TESTS = libbfd disassembler-four-args disassembler-init-styled
  38 FEATURE_DISPLAY = libbfd
  39
  40 check_feat := 1
  41 NON_CHECK_FEAT_TARGETS := clean bpftool_clean runqslower_clean resolve_btfids_clean
  42 ifdef MAKECMDGOALS
  43 ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
  44   check_feat := 0
  45 endif
  46 endif
  47
  48 ifeq ($(check_feat),1)
  49 ifeq ($(FEATURES_DUMP),)
  50 include $(srctree)/tools/build/Makefile.feature
  51 else
  52 include $(FEATURES_DUMP)
  53 endif
  54 endif
  55
  56 ifeq ($(feature-disassembler-four-args), 1)
  57 CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
  58 endif
  59 ifeq ($(feature-disassembler-init-styled), 1)
  60 CFLAGS += -DDISASM_INIT_STYLED
  61 endif
  62
  63 $(OUTPUT)%.yacc.c: $(srctree)/tools/bpf/%.y
  64         $(QUIET_BISON)$(YACC) -o $@ -d $<
  65
  66 $(OUTPUT)%.lex.c: $(srctree)/tools/bpf/%.l
  67         $(QUIET_FLEX)$(LEX) -o $@ $<
  68
  69 $(OUTPUT)%.o: $(srctree)/tools/bpf/%.c
  70         $(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
  71
  72 $(OUTPUT)%.yacc.o: $(OUTPUT)%.yacc.c
  73         $(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
  74 $(OUTPUT)%.lex.o: $(OUTPUT)%.lex.c
  75         $(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
  76
  77 PROGS = $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg $(OUTPUT)bpf_asm
  78
  79 all: $(PROGS) bpftool runqslower
  80
  81 $(OUTPUT)bpf_jit_disasm: CFLAGS += -DPACKAGE='bpf_jit_disasm'
  82 $(OUTPUT)bpf_jit_disasm: $(OUTPUT)bpf_jit_disasm.o
  83         $(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lopcodes -lbfd -ldl
  84
  85 $(OUTPUT)bpf_dbg: $(OUTPUT)bpf_dbg.o
  86         $(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lreadline
  87
  88 $(OUTPUT)bpf_asm: $(OUTPUT)bpf_asm.o $(OUTPUT)bpf_exp.yacc.o $(OUTPUT)bpf_exp.lex.o
  89         $(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^
  90
  91 $(OUTPUT)bpf_exp.lex.c: $(OUTPUT)bpf_exp.yacc.c
  92 $(OUTPUT)bpf_exp.yacc.o: $(OUTPUT)bpf_exp.yacc.c
  93 $(OUTPUT)bpf_exp.lex.o: $(OUTPUT)bpf_exp.lex.c
  94
  95 clean: bpftool_clean runqslower_clean resolve_btfids_clean
  96         $(call QUIET_CLEAN, bpf-progs)
  97         $(Q)$(RM) -r -- $(OUTPUT)*.o $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg \
  98                $(OUTPUT)bpf_asm $(OUTPUT)bpf_exp.yacc.* $(OUTPUT)bpf_exp.lex.*
  99         $(call QUIET_CLEAN, core-gen)
 100         $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpf
 101         $(Q)$(RM) -r -- $(OUTPUT)feature
 102
 103 install: $(PROGS) bpftool_install
 104         $(call QUIET_INSTALL, bpf_jit_disasm)
 105         $(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/bin
 106         $(Q)$(INSTALL) $(OUTPUT)bpf_jit_disasm $(DESTDIR)$(prefix)/bin/bpf_jit_disasm
 107         $(call QUIET_INSTALL, bpf_dbg)
 108         $(Q)$(INSTALL) $(OUTPUT)bpf_dbg $(DESTDIR)$(prefix)/bin/bpf_dbg
 109         $(call QUIET_INSTALL, bpf_asm)
 110         $(Q)$(INSTALL) $(OUTPUT)bpf_asm $(DESTDIR)$(prefix)/bin/bpf_asm
 111
 112 bpftool:
 113         $(call descend,bpftool)
 114
 115 bpftool_install:
 116         $(call descend,bpftool,install)
 117
 118 bpftool_clean:
 119         $(call descend,bpftool,clean)
 120
 121 runqslower:
 122         $(call descend,runqslower)
 123
 124 runqslower_clean:
 125         $(call descend,runqslower,clean)
 126
 127 resolve_btfids:
 128         $(call descend,resolve_btfids)
 129
 130 resolve_btfids_clean:
 131         $(call descend,resolve_btfids,clean)
 132
 133 .PHONY: all install clean bpftool bpftool_install bpftool_clean \
 134         runqslower runqslower_clean \
 135         resolve_btfids resolve_btfids_clean