linux/tools/objtool/Makefile
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   1# SPDX-License-Identifier: GPL-2.0
   2include ../scripts/Makefile.include
   3include ../scripts/Makefile.arch
   4
   5# always use the host compiler
   6AR       = $(HOSTAR)
   7CC       = $(HOSTCC)
   8LD       = $(HOSTLD)
   9
  10ifeq ($(srctree),)
  11srctree := $(patsubst %/,%,$(dir $(CURDIR)))
  12srctree := $(patsubst %/,%,$(dir $(srctree)))
  13endif
  14
  15SUBCMD_SRCDIR           = $(srctree)/tools/lib/subcmd/
  16LIBSUBCMD_OUTPUT        = $(if $(OUTPUT),$(OUTPUT),$(CURDIR)/)
  17LIBSUBCMD               = $(LIBSUBCMD_OUTPUT)libsubcmd.a
  18
  19OBJTOOL    := $(OUTPUT)objtool
  20OBJTOOL_IN := $(OBJTOOL)-in.o
  21
  22LIBELF_FLAGS := $(shell pkg-config libelf --cflags 2>/dev/null)
  23LIBELF_LIBS  := $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)
  24
  25all: $(OBJTOOL)
  26
  27INCLUDES := -I$(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
  32WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed -Wno-nested-externs
  33CFLAGS   := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS)
  34LDFLAGS  += $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS)
  35
  36# Allow old libelf to be used:
  37elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
  38CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
  39
  40AWK = awk
  41
  42SUBCMD_CHECK := n
  43SUBCMD_ORC := n
  44
  45ifeq ($(SRCARCH),x86)
  46        SUBCMD_CHECK := y
  47        SUBCMD_ORC := y
  48endif
  49
  50export SUBCMD_CHECK SUBCMD_ORC
  51export srctree OUTPUT CFLAGS SRCARCH AWK
  52include $(srctree)/tools/build/Makefile.include
  53
  54$(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
  65clean:
  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
  70FORCE:
  71
  72.PHONY: clean FORCE
  73