1 # SPDX-License-Identifier: GPL-2.0
2 include ../scripts/Makefile.include
3 include ../scripts/Makefile.arch
5 # always use the host compiler
11 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
12 srctree := $(patsubst %/,%,$(dir $(srctree)))
15 SUBCMD_SRCDIR = $(srctree)/tools/lib/subcmd/
16 LIBSUBCMD_OUTPUT = $(or $(OUTPUT),$(CURDIR)/)
17 LIBSUBCMD = $(LIBSUBCMD_OUTPUT)libsubcmd.a
19 OBJTOOL := $(OUTPUT)objtool
20 OBJTOOL_IN := $(OBJTOOL)-in.o
22 LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)
23 LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
27 INCLUDES := -I$(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)
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)
49 export srctree OUTPUT CFLAGS SRCARCH AWK
50 include $(srctree)/tools/build/Makefile.include
52 $(OBJTOOL_IN): fixdep FORCE
53 @$(CONFIG_SHELL) ./sync-check.sh
54 @$(MAKE) $(build)=objtool
56 $(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
57 $(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@
60 $(LIBSUBCMD): fixdep FORCE
61 $(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT)
64 $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL)
65 $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
66 $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep $(LIBSUBCMD)