tools/objtool/Makefile

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