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https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
9c299a32ed
Fix build error found with Ubuntu shipped gcc-5
~/git/bpf/tools/bpf$ make all
Auto-detecting system features:
... libbfd: [ OFF ]
... disassembler-four-args: [ OFF ]
CC bpf_jit_disasm.o
LINK bpf_jit_disasm
CC bpf_dbg.o
/home/john/git/bpf/tools/bpf/bpf_dbg.c: In function ‘cmd_load’:
/home/john/git/bpf/tools/bpf/bpf_dbg.c:1077:13: warning: ‘cont’ may be used uninitialized in this function [-Wmaybe-uninitialized]
} else if (matches(subcmd, "pcap") == 0) {
^
LINK bpf_dbg
CC bpf_asm.o
make: *** No rule to make target `bpf_exp.yacc.o', needed by `bpf_asm'. Stop.
Fixes: 5a8997f207 ("tools: bpf: respect output directory during build")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
107 lines
2.7 KiB
Makefile
107 lines
2.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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include ../scripts/Makefile.include
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prefix ?= /usr/local
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CC = gcc
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LEX = flex
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YACC = bison
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MAKE = make
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INSTALL ?= install
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CFLAGS += -Wall -O2
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CFLAGS += -D__EXPORTED_HEADERS__ -I$(srctree)/include/uapi -I$(srctree)/include
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ifeq ($(srctree),)
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srctree := $(patsubst %/,%,$(dir $(CURDIR)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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endif
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ifeq ($(V),1)
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Q =
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else
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Q = @
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endif
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FEATURE_USER = .bpf
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FEATURE_TESTS = libbfd disassembler-four-args
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FEATURE_DISPLAY = libbfd disassembler-four-args
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check_feat := 1
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NON_CHECK_FEAT_TARGETS := clean bpftool_clean
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ifdef MAKECMDGOALS
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ifeq ($(filter-out $(NON_CHECK_FEAT_TARGETS),$(MAKECMDGOALS)),)
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check_feat := 0
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endif
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endif
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ifeq ($(check_feat),1)
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ifeq ($(FEATURES_DUMP),)
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include $(srctree)/tools/build/Makefile.feature
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else
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include $(FEATURES_DUMP)
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endif
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endif
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ifeq ($(feature-disassembler-four-args), 1)
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CFLAGS += -DDISASM_FOUR_ARGS_SIGNATURE
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endif
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$(OUTPUT)%.yacc.c: $(srctree)/tools/bpf/%.y
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$(QUIET_BISON)$(YACC) -o $@ -d $<
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$(OUTPUT)%.lex.c: $(srctree)/tools/bpf/%.l
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$(QUIET_FLEX)$(LEX) -o $@ $<
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$(OUTPUT)%.o: $(srctree)/tools/bpf/%.c
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$(QUIET_CC)$(COMPILE.c) -o $@ $<
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$(OUTPUT)%.yacc.o: $(OUTPUT)%.yacc.c
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$(QUIET_CC)$(COMPILE.c) -o $@ $<
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$(OUTPUT)%.lex.o: $(OUTPUT)%.lex.c
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$(QUIET_CC)$(COMPILE.c) -o $@ $<
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PROGS = $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg $(OUTPUT)bpf_asm
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all: $(PROGS) bpftool
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$(OUTPUT)bpf_jit_disasm: CFLAGS += -DPACKAGE='bpf_jit_disasm'
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$(OUTPUT)bpf_jit_disasm: $(OUTPUT)bpf_jit_disasm.o
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$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lopcodes -lbfd -ldl
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$(OUTPUT)bpf_dbg: $(OUTPUT)bpf_dbg.o
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$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^ -lreadline
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$(OUTPUT)bpf_asm: $(OUTPUT)bpf_asm.o $(OUTPUT)bpf_exp.yacc.o $(OUTPUT)bpf_exp.lex.o
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$(QUIET_LINK)$(CC) $(CFLAGS) -o $@ $^
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$(OUTPUT)bpf_exp.lex.c: $(OUTPUT)bpf_exp.yacc.c
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$(OUTPUT)bpf_exp.yacc.o: $(OUTPUT)bpf_exp.yacc.c
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$(OUTPUT)bpf_exp.lex.o: $(OUTPUT)bpf_exp.lex.c
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clean: bpftool_clean
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$(call QUIET_CLEAN, bpf-progs)
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$(Q)rm -rf $(OUTPUT)*.o $(OUTPUT)bpf_jit_disasm $(OUTPUT)bpf_dbg \
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$(OUTPUT)bpf_asm $(OUTPUT)bpf_exp.yacc.* $(OUTPUT)bpf_exp.lex.*
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$(call QUIET_CLEAN, core-gen)
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$(Q)rm -f $(OUTPUT)FEATURE-DUMP.bpf
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install: $(PROGS) bpftool_install
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$(call QUIET_INSTALL, bpf_jit_disasm)
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$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/bin
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$(Q)$(INSTALL) $(OUTPUT)bpf_jit_disasm $(DESTDIR)$(prefix)/bin/bpf_jit_disasm
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$(call QUIET_INSTALL, bpf_dbg)
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$(Q)$(INSTALL) $(OUTPUT)bpf_dbg $(DESTDIR)$(prefix)/bin/bpf_dbg
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$(call QUIET_INSTALL, bpf_asm)
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$(Q)$(INSTALL) $(OUTPUT)bpf_asm $(DESTDIR)$(prefix)/bin/bpf_asm
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bpftool:
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$(call descend,bpftool)
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bpftool_install:
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$(call descend,bpftool,install)
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bpftool_clean:
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$(call descend,bpftool,clean)
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.PHONY: all install clean bpftool bpftool_install bpftool_clean
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