Makefile

  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 $(srctree)))
 28endif
 29
 30FEATURE_USER = .bpf
 31FEATURE_TESTS = libbfd disassembler-four-args disassembler-init-styled
 32FEATURE_DISPLAY = libbfd
 33
 34check_feat := 1
 35NON_CHECK_FEAT_TARGETS := clean bpftool_clean resolve_btfids_clean
 36ifdef MAKECMDGOALS
 37ifeq ($(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
 53ifeq ($(feature-disassembler-init-styled), 1)
 54CFLAGS += -DDISASM_INIT_STYLED
 55endif
 56
 57$(OUTPUT)%.yacc.c: $(srctree)/tools/bpf/%.y
 58	$(QUIET_BISON)$(YACC) -o $@ -d $<
 59
 60$(OUTPUT)%.lex.c: $(srctree)/tools/bpf/%.l
 61	$(QUIET_FLEX)$(LEX) -o $@ $<
 62
 63$(OUTPUT)%.o: $(srctree)/tools/bpf/%.c
 64	$(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
 65
 66$(OUTPUT)%.yacc.o: $(OUTPUT)%.yacc.c
 67	$(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
 68$(OUTPUT)%.lex.o: $(OUTPUT)%.lex.c
 69	$(QUIET_CC)$(CC) $(CFLAGS) -c -o $@ $<
 70
 71PROGS = $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg $(OUTPUT)bpf_asm
 72
 73all: $(PROGS) bpftool
 74
 75$(OUTPUT)bpf_jit_disasm: CFLAGS += -DPACKAGE='bpf_jit_disasm'
 76$(OUTPUT)bpf_jit_disasm: $(OUTPUT)bpf_jit_disasm.o
 77	$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lopcodes -lbfd -ldl
 78
 79$(OUTPUT)bpf_dbg: $(OUTPUT)bpf_dbg.o
 80	$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lreadline
 81
 82$(OUTPUT)bpf_asm: $(OUTPUT)bpf_asm.o $(OUTPUT)bpf_exp.yacc.o $(OUTPUT)bpf_exp.lex.o
 83	$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^
 84
 85$(OUTPUT)bpf_exp.lex.c: $(OUTPUT)bpf_exp.yacc.c
 86$(OUTPUT)bpf_exp.yacc.o: $(OUTPUT)bpf_exp.yacc.c
 87$(OUTPUT)bpf_exp.lex.o: $(OUTPUT)bpf_exp.lex.c
 88
 89clean: bpftool_clean resolve_btfids_clean
 90	$(call QUIET_CLEAN, bpf-progs)
 91	$(Q)$(RM) -r -- $(OUTPUT)*.o $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg \
 92	       $(OUTPUT)bpf_asm $(OUTPUT)bpf_exp.yacc.* $(OUTPUT)bpf_exp.lex.*
 93	$(call QUIET_CLEAN, core-gen)
 94	$(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpf
 95	$(Q)$(RM) -r -- $(OUTPUT)feature
 96
 97install: $(PROGS) bpftool_install
 98	$(call QUIET_INSTALL, bpf_jit_disasm)
 99	$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/bin
100	$(Q)$(INSTALL) $(OUTPUT)bpf_jit_disasm $(DESTDIR)$(prefix)/bin/bpf_jit_disasm
101	$(call QUIET_INSTALL, bpf_dbg)
102	$(Q)$(INSTALL) $(OUTPUT)bpf_dbg $(DESTDIR)$(prefix)/bin/bpf_dbg
103	$(call QUIET_INSTALL, bpf_asm)
104	$(Q)$(INSTALL) $(OUTPUT)bpf_asm $(DESTDIR)$(prefix)/bin/bpf_asm
105
106bpftool:
107	$(call descend,bpftool)
108
109bpftool_install:
110	$(call descend,bpftool,install)
111
112bpftool_clean:
113	$(call descend,bpftool,clean)
114
115resolve_btfids:
116	$(call descend,resolve_btfids)
117
118resolve_btfids_clean:
119	$(call descend,resolve_btfids,clean)
120
121.PHONY: all install clean bpftool bpftool_install bpftool_clean \
122	resolve_btfids resolve_btfids_clean