1# SPDX-License-Identifier: GPL-2.0
  2include ../scripts/Makefile.include
  3
  4prefix ?= /usr/local
  5
  6CC = gcc
  7LEX = flex
  8YACC = bison
  9MAKE = make
 10INSTALL ?= install
 11
 12CFLAGS += -Wall -O2
 13CFLAGS += -D__EXPORTED_HEADERS__ -I$(srctree)/include/uapi -I$(srctree)/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
 19ifndef building_out_of_srctree
 20srctree := $(patsubst %/,%,$(dir $(CURDIR)))
 21srctree := $(patsubst %/,%,$(dir $(srctree)))
 22endif
 23
 24ifeq ($(V),1)
 25  Q =
 26else
 27  Q = @
 28endif
 29
 30FEATURE_USER = .bpf
 31FEATURE_TESTS = libbfd disassembler-four-args
 32FEATURE_DISPLAY = libbfd disassembler-four-args
 33
 34check_feat := 1
 35NON_CHECK_FEAT_TARGETS := clean bpftool_clean
 36ifdef MAKECMDGOALS
 37ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
 38  check_feat := 0
 39endif
 40endif
 41
 42ifeq ($(check_feat),1)
 43ifeq ($(FEATURES_DUMP),)
 44include $(srctree)/tools/build/Makefile.feature
 45else
 46include $(FEATURES_DUMP)
 47endif
 48endif
 49
 50ifeq ($(feature-disassembler-four-args), 1)
 51CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
 52endif
 53
 54$(OUTPUT)%.yacc.c: $(srctree)/tools/bpf/%.y
 55	$(QUIET_BISON)$(YACC) -o $@ -d $<
 56
 57$(OUTPUT)%.lex.c: $(srctree)/tools/bpf/%.l
 58	$(QUIET_FLEX)$(LEX) -o $@ $<
 59
 60$(OUTPUT)%.o: $(srctree)/tools/bpf/%.c
 61	$(QUIET_CC)$(COMPILE.c) -o $@ $<
 62
 63$(OUTPUT)%.yacc.o: $(OUTPUT)%.yacc.c
 64	$(QUIET_CC)$(COMPILE.c) -o $@ $<
 65$(OUTPUT)%.lex.o: $(OUTPUT)%.lex.c
 66	$(QUIET_CC)$(COMPILE.c) -o $@ $<
 67
 68PROGS = $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg $(OUTPUT)bpf_asm
 69
 70all: $(PROGS) bpftool
 71
 72$(OUTPUT)bpf_jit_disasm: CFLAGS += -DPACKAGE='bpf_jit_disasm'
 73$(OUTPUT)bpf_jit_disasm: $(OUTPUT)bpf_jit_disasm.o
 74	$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lopcodes -lbfd -ldl
 75
 76$(OUTPUT)bpf_dbg: $(OUTPUT)bpf_dbg.o
 77	$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lreadline
 78
 79$(OUTPUT)bpf_asm: $(OUTPUT)bpf_asm.o $(OUTPUT)bpf_exp.yacc.o $(OUTPUT)bpf_exp.lex.o
 80	$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^
 81
 82$(OUTPUT)bpf_exp.lex.c: $(OUTPUT)bpf_exp.yacc.c
 83$(OUTPUT)bpf_exp.yacc.o: $(OUTPUT)bpf_exp.yacc.c
 84$(OUTPUT)bpf_exp.lex.o: $(OUTPUT)bpf_exp.lex.c
 85
 86clean: bpftool_clean
 87	$(call QUIET_CLEAN, bpf-progs)
 88	$(Q)$(RM) -r -- $(OUTPUT)*.o $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg \
 89	       $(OUTPUT)bpf_asm $(OUTPUT)bpf_exp.yacc.* $(OUTPUT)bpf_exp.lex.*
 90	$(call QUIET_CLEAN, core-gen)
 91	$(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpf
 92	$(Q)$(RM) -r -- $(OUTPUT)feature
 93
 94install: $(PROGS) bpftool_install
 95	$(call QUIET_INSTALL, bpf_jit_disasm)
 96	$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/bin
 97	$(Q)$(INSTALL) $(OUTPUT)bpf_jit_disasm $(DESTDIR)$(prefix)/bin/bpf_jit_disasm
 98	$(call QUIET_INSTALL, bpf_dbg)
 99	$(Q)$(INSTALL) $(OUTPUT)bpf_dbg $(DESTDIR)$(prefix)/bin/bpf_dbg
100	$(call QUIET_INSTALL, bpf_asm)
101	$(Q)$(INSTALL) $(OUTPUT)bpf_asm $(DESTDIR)$(prefix)/bin/bpf_asm
102
103bpftool:
104	$(call descend,bpftool)
105
106bpftool_install:
107	$(call descend,bpftool,install)
108
109bpftool_clean:
110	$(call descend,bpftool,clean)
111
112.PHONY: all install clean bpftool bpftool_install bpftool_clean