1 # SPDX-License-Identifier: GPL-2.0
2 include ../scripts/Makefile.include
3 include ../scripts/Makefile.arch
9 # always use the host compiler
15 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
16 srctree := $(patsubst %/,%,$(dir $(srctree)))
19 SUBCMD_SRCDIR = $(srctree)/tools/lib/subcmd/
20 LIBSUBCMD_OUTPUT = $(if $(OUTPUT),$(OUTPUT),$(CURDIR)/)
21 LIBSUBCMD = $(LIBSUBCMD_OUTPUT)libsubcmd.a
23 OBJTOOL := $(OUTPUT)objtool
24 OBJTOOL_IN := $(OBJTOOL)-in.o
26 LIBELF_FLAGS := $(shell pkg-config libelf --cflags 2>/dev/null)
27 LIBELF_LIBS := $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)
31 INCLUDES := -I$(srctree)/tools/include \
32 -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \
33 -I$(srctree)/tools/objtool/arch/$(ARCH)/include
34 WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed
35 CFLAGS := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS)
36 LDFLAGS += $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS)
38 # Allow old libelf to be used:
39 elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
40 CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
43 export srctree OUTPUT CFLAGS SRCARCH AWK
44 include $(srctree)/tools/build/Makefile.include
46 $(OBJTOOL_IN): fixdep FORCE
47 @$(MAKE) $(build)=objtool
49 $(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
50 @$(CONFIG_SHELL) ./sync-check.sh
51 $(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@
54 $(LIBSUBCMD): fixdep FORCE
55 $(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT)
58 $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL)
59 $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
60 $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep