1include ../scripts/Makefile.include 2 3ifndef ($(ARCH)) 4ARCH ?= $(shell uname -m) 5ifeq ($(ARCH),x86_64) 6ARCH := x86 7endif 8endif 9 10# always use the host compiler 11CC = gcc 12LD = ld 13AR = ar 14 15ifeq ($(srctree),) 16srctree := $(patsubst %/,%,$(dir $(shell pwd))) 17srctree := $(patsubst %/,%,$(dir $(srctree))) 18endif 19 20SUBCMD_SRCDIR = $(srctree)/tools/lib/subcmd/ 21LIBSUBCMD_OUTPUT = $(if $(OUTPUT),$(OUTPUT),$(PWD)/) 22LIBSUBCMD = $(LIBSUBCMD_OUTPUT)libsubcmd.a 23 24OBJTOOL := $(OUTPUT)objtool 25OBJTOOL_IN := $(OBJTOOL)-in.o 26 27all: $(OBJTOOL) 28 29INCLUDES := -I$(srctree)/tools/include 30CFLAGS += -Wall -Werror $(EXTRA_WARNINGS) -fomit-frame-pointer -O2 -g $(INCLUDES) 31LDFLAGS += -lelf $(LIBSUBCMD) 32 33# Allow old libelf to be used: 34elfshdr := $(shell echo '\#include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr) 35CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED) 36 37AWK = awk 38export srctree OUTPUT CFLAGS ARCH AWK 39include $(srctree)/tools/build/Makefile.include 40 41$(OBJTOOL_IN): fixdep FORCE 42 @$(MAKE) $(build)=objtool 43 44$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) 45 @(test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \ 46 diff -I'^#include' arch/x86/insn/insn.c ../../arch/x86/lib/insn.c >/dev/null && \ 47 diff -I'^#include' arch/x86/insn/inat.c ../../arch/x86/lib/inat.c >/dev/null && \ 48 diff arch/x86/insn/x86-opcode-map.txt ../../arch/x86/lib/x86-opcode-map.txt >/dev/null && \ 49 diff arch/x86/insn/gen-insn-attr-x86.awk ../../arch/x86/tools/gen-insn-attr-x86.awk >/dev/null && \ 50 diff -I'^#include' arch/x86/insn/insn.h ../../arch/x86/include/asm/insn.h >/dev/null && \ 51 diff -I'^#include' arch/x86/insn/inat.h ../../arch/x86/include/asm/inat.h >/dev/null && \ 52 diff -I'^#include' arch/x86/insn/inat_types.h ../../arch/x86/include/asm/inat_types.h >/dev/null) \ 53 || echo "Warning: objtool: x86 instruction decoder differs from kernel" >&2 )) || true 54 $(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@ 55 56 57$(LIBSUBCMD): fixdep FORCE 58 $(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT) 59 60clean: 61 $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL) 62 $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete 63 $(Q)$(RM) $(OUTPUT)arch/x86/insn/inat-tables.c $(OUTPUT)fixdep 64 65FORCE: 66 67.PHONY: clean FORCE 68