tools/objtool/Makefile

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