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