tools/objtool/Makefile

   1 include ../scripts/Makefile.include
   2
   3 ifndef ($(ARCH))
   4 ARCH ?= $(shell uname -m)
   5 ifeq ($(ARCH),x86_64)
   6 ARCH := x86
   7 endif
   8 endif
   9
  10 # always use the host compiler
  11 CC = gcc
  12 LD = ld
  13 AR = ar
  14
  15 ifeq ($(srctree),)
  16 srctree := $(patsubst %/,%,$(dir $(shell pwd)))
  17 srctree := $(patsubst %/,%,$(dir $(srctree)))
  18 endif
  19
  20 SUBCMD_SRCDIR           = $(srctree)/tools/lib/subcmd/
  21 LIBSUBCMD_OUTPUT        = $(if $(OUTPUT),$(OUTPUT),$(PWD)/)
  22 LIBSUBCMD               = $(LIBSUBCMD_OUTPUT)libsubcmd.a
  23
  24 OBJTOOL    := $(OUTPUT)objtool
  25 OBJTOOL_IN := $(OBJTOOL)-in.o
  26
  27 all: $(OBJTOOL)
  28
  29 INCLUDES := -I$(srctree)/tools/include
  30 CFLAGS   += -Wall -Werror $(EXTRA_WARNINGS) -fomit-frame-pointer -O2 -g $(INCLUDES)
  31 LDFLAGS  += -lelf $(LIBSUBCMD)
  32
  33 # Allow old libelf to be used:
  34 elfshdr := $(shell echo '\#include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
  35 CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
  36
  37 AWK = awk
  38 export srctree OUTPUT CFLAGS ARCH AWK
  39 include $(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
  60 clean:
  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
  65 FORCE:
  66
  67 .PHONY: clean FORCE