1# SPDX-License-Identifier: GPL-2.0
 2include ../scripts/Makefile.include
 3include ../scripts/Makefile.arch
 4
 
 
 
 
 5# always use the host compiler
 6AR	 = $(HOSTAR)
 7CC	 = $(HOSTCC)
 8LD	 = $(HOSTLD)
 9
10ifeq ($(srctree),)
11srctree := $(patsubst %/,%,$(dir $(CURDIR)))
12srctree := $(patsubst %/,%,$(dir $(srctree)))
13endif
14
15SUBCMD_SRCDIR		= $(srctree)/tools/lib/subcmd/
16LIBSUBCMD_OUTPUT	= $(if $(OUTPUT),$(OUTPUT),$(CURDIR)/)
17LIBSUBCMD		= $(LIBSUBCMD_OUTPUT)libsubcmd.a
18
19OBJTOOL    := $(OUTPUT)objtool
20OBJTOOL_IN := $(OBJTOOL)-in.o
21
22LIBELF_FLAGS := $(shell pkg-config libelf --cflags 2>/dev/null)
23LIBELF_LIBS  := $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)
24
25all: $(OBJTOOL)
26
27INCLUDES := -I$(srctree)/tools/include \
28	    -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \
29	    -I$(srctree)/tools/arch/$(SRCARCH)/include	\
30	    -I$(srctree)/tools/objtool/include \
31	    -I$(srctree)/tools/objtool/arch/$(SRCARCH)/include
32WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed -Wno-nested-externs
33CFLAGS   := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS)
34LDFLAGS  += $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS)
35
36# Allow old libelf to be used:
37elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
38CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
39
40AWK = awk
41
42SUBCMD_CHECK := n
43SUBCMD_ORC := n
44
45ifeq ($(SRCARCH),x86)
46	SUBCMD_CHECK := y
47	SUBCMD_ORC := y
48endif
49
50export SUBCMD_CHECK SUBCMD_ORC
51export srctree OUTPUT CFLAGS SRCARCH AWK
52include $(srctree)/tools/build/Makefile.include
53
54$(OBJTOOL_IN): fixdep FORCE
55	@$(CONFIG_SHELL) ./sync-check.sh
56	@$(MAKE) $(build)=objtool
57
 
 
58$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
 
 
 
 
 
 
 
 
 
 
59	$(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@
60
61
62$(LIBSUBCMD): fixdep FORCE
63	$(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT)
64
65clean:
66	$(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL)
67	$(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
68	$(Q)$(RM) $(OUTPUT)arch/x86/inat-tables.c $(OUTPUT)fixdep
69
70FORCE:
71
72.PHONY: clean FORCE

 
 1include ../scripts/Makefile.include
 2include ../scripts/Makefile.arch
 3
 4ifeq ($(ARCH),x86_64)
 5ARCH := x86
 6endif
 7
 8# always use the host compiler
 9CC = gcc
10LD = ld
11AR = ar
12
13ifeq ($(srctree),)
14srctree := $(patsubst %/,%,$(dir $(CURDIR)))
15srctree := $(patsubst %/,%,$(dir $(srctree)))
16endif
17
18SUBCMD_SRCDIR		= $(srctree)/tools/lib/subcmd/
19LIBSUBCMD_OUTPUT	= $(if $(OUTPUT),$(OUTPUT),$(CURDIR)/)
20LIBSUBCMD		= $(LIBSUBCMD_OUTPUT)libsubcmd.a
21
22OBJTOOL    := $(OUTPUT)objtool
23OBJTOOL_IN := $(OBJTOOL)-in.o
24
 
 
 
25all: $(OBJTOOL)
26
27INCLUDES := -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi
28CFLAGS   += -Wall -Werror $(EXTRA_WARNINGS) -fomit-frame-pointer -O2 -g $(INCLUDES)
29LDFLAGS  += -lelf $(LIBSUBCMD)
 
 
 
 
 
30
31# Allow old libelf to be used:
32elfshdr := $(shell echo '\#include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
33CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
34
35AWK = awk
 
 
 
 
 
 
 
 
 
 
36export srctree OUTPUT CFLAGS SRCARCH AWK
37include $(srctree)/tools/build/Makefile.include
38
39$(OBJTOOL_IN): fixdep FORCE
 
40	@$(MAKE) $(build)=objtool
41
42# Busybox's diff doesn't have -I, avoid warning in that case
43#
44$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
45	@(diff -I 2>&1 | grep -q 'option requires an argument' && \
46	test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \
47	diff -I'^#include' arch/x86/insn/insn.c ../../arch/x86/lib/insn.c >/dev/null && \
48	diff -I'^#include' arch/x86/insn/inat.c ../../arch/x86/lib/inat.c >/dev/null && \
49	diff arch/x86/insn/x86-opcode-map.txt ../../arch/x86/lib/x86-opcode-map.txt >/dev/null && \
50	diff arch/x86/insn/gen-insn-attr-x86.awk ../../arch/x86/tools/gen-insn-attr-x86.awk >/dev/null && \
51	diff -I'^#include' arch/x86/insn/insn.h ../../arch/x86/include/asm/insn.h >/dev/null && \
52	diff -I'^#include' arch/x86/insn/inat.h ../../arch/x86/include/asm/inat.h >/dev/null && \
53	diff -I'^#include' arch/x86/insn/inat_types.h ../../arch/x86/include/asm/inat_types.h >/dev/null) \
54	|| echo "warning: objtool: x86 instruction decoder differs from kernel" >&2 )) || true
55	$(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@
56
57
58$(LIBSUBCMD): fixdep FORCE
59	$(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT)
60
61clean:
62	$(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL)
63	$(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
64	$(Q)$(RM) $(OUTPUT)arch/x86/insn/inat-tables.c $(OUTPUT)fixdep
65
66FORCE:
67
68.PHONY: clean FORCE