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 = $(or $(OUTPUT),$(CURDIR)/) 17LIBSUBCMD = $(LIBSUBCMD_OUTPUT)libsubcmd.a 18 19OBJTOOL := $(OUTPUT)objtool 20OBJTOOL_IN := $(OBJTOOL)-in.o 21 22LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null) 23LIBELF_LIBS := $(shell $(HOSTPKG_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 $(elfshdr),,-DLIBELF_USE_DEPRECATED) 39 40AWK = awk 41 42BUILD_ORC := n 43 44ifeq ($(SRCARCH),x86) 45 BUILD_ORC := y 46endif 47 48export BUILD_ORC 49export srctree OUTPUT CFLAGS SRCARCH AWK 50include $(srctree)/tools/build/Makefile.include 51 52$(OBJTOOL_IN): fixdep FORCE 53 @$(CONFIG_SHELL) ./sync-check.sh 54 @$(MAKE) $(build)=objtool 55 56$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) 57 $(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@ 58 59 60$(LIBSUBCMD): fixdep FORCE 61 $(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT) 62 63clean: 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) 67 68FORCE: 69 70.PHONY: clean FORCE 71