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 WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed
  29 CFLAGS   += -Wall -Werror $(WARNINGS) -fomit-frame-pointer -O2 -g $(INCLUDES)
  30 LDFLAGS  += -lelf $(LIBSUBCMD)
  31
  32 # Allow old libelf to be used:
  33 elfshdr := $(shell echo '\#include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
  34 CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
  35
  36 AWK = awk
  37 export srctree OUTPUT CFLAGS SRCARCH AWK
  38 include $(srctree)/tools/build/Makefile.include
  39
  40 $(OBJTOOL_IN): fixdep FORCE
  41         @$(MAKE) $(build)=objtool
  42
  43 # Busybox's diff doesn't have -I, avoid warning in that case
  44 #
  45 $(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
  46         @(diff -I 2>&1 | grep -q 'option requires an argument' && \
  47         test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \
  48         diff -I'^#include' arch/x86/insn/insn.c ../../arch/x86/lib/insn.c >/dev/null && \
  49         diff -I'^#include' arch/x86/insn/inat.c ../../arch/x86/lib/inat.c >/dev/null && \
  50         diff arch/x86/insn/x86-opcode-map.txt ../../arch/x86/lib/x86-opcode-map.txt >/dev/null && \
  51         diff arch/x86/insn/gen-insn-attr-x86.awk ../../arch/x86/tools/gen-insn-attr-x86.awk >/dev/null && \
  52         diff -I'^#include' arch/x86/insn/insn.h ../../arch/x86/include/asm/insn.h >/dev/null && \
  53         diff -I'^#include' arch/x86/insn/inat.h ../../arch/x86/include/asm/inat.h >/dev/null && \
  54         diff -I'^#include' arch/x86/insn/inat_types.h ../../arch/x86/include/asm/inat_types.h >/dev/null) \
  55         || echo "warning: objtool: x86 instruction decoder differs from kernel" >&2 )) || true
  56         @(test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \
  57         diff ../../arch/x86/include/asm/orc_types.h orc_types.h >/dev/null) \
  58         || echo "warning: objtool: orc_types.h differs from kernel" >&2 )) || true
  59         $(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@
  60
  61
  62 $(LIBSUBCMD): fixdep FORCE
  63         $(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT)
  64
  65 clean:
  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/insn/inat-tables.c $(OUTPUT)fixdep
  69
  70 FORCE:
  71
  72 .PHONY: clean FORCE