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$(srctree)/tools/objtool/arch/$(SRCARCH)/include 31WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed -Wno-nested-externs 32CFLAGS := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS) 33LDFLAGS += $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS) 34 35# Allow old libelf to be used: 36elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr) 37CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED) 38 39AWK = awk 40 41SUBCMD_CHECK := n 42SUBCMD_ORC := n 43 44ifeq ($(SRCARCH),x86) 45 SUBCMD_CHECK := y 46 SUBCMD_ORC := y 47endif 48 49ifeq ($(SUBCMD_ORC),y) 50 CFLAGS += -DINSN_USE_ORC 51endif 52 53export SUBCMD_CHECK SUBCMD_ORC 54export srctree OUTPUT CFLAGS SRCARCH AWK 55include $(srctree)/tools/build/Makefile.include 56 57$(OBJTOOL_IN): fixdep FORCE 58 @$(CONFIG_SHELL) ./sync-check.sh 59 @$(MAKE) $(build)=objtool 60 61$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) 62 $(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@ 63 64 65$(LIBSUBCMD): fixdep FORCE 66 $(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT) 67 68clean: 69 $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL) 70 $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete 71 $(Q)$(RM) $(OUTPUT)arch/x86/inat-tables.c $(OUTPUT)fixdep 72 73FORCE: 74 75.PHONY: clean FORCE 76