| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | include ../scripts/Makefile.include |
| 3 | include ../scripts/Makefile.arch |
| 4 | |
| 5 | ifeq ($(ARCH),x86_64) |
| 6 | ARCH := x86 |
| 7 | endif |
| 8 | |
| 9 | # always use the host compiler |
| 10 | HOSTCC ?= gcc |
| 11 | HOSTLD ?= ld |
| 12 | CC = $(HOSTCC) |
| 13 | LD = $(HOSTLD) |
| 14 | AR = ar |
| 15 | |
| 16 | ifeq ($(srctree),) |
| 17 | srctree := $(patsubst %/,%,$(dir $(CURDIR))) |
| 18 | srctree := $(patsubst %/,%,$(dir $(srctree))) |
| 19 | endif |
| 20 | |
| 21 | SUBCMD_SRCDIR = $(srctree)/tools/lib/subcmd/ |
| 22 | LIBSUBCMD_OUTPUT = $(if $(OUTPUT),$(OUTPUT),$(CURDIR)/) |
| 23 | LIBSUBCMD = $(LIBSUBCMD_OUTPUT)libsubcmd.a |
| 24 | |
| 25 | OBJTOOL := $(OUTPUT)objtool |
| 26 | OBJTOOL_IN := $(OBJTOOL)-in.o |
| 27 | |
| 28 | all: $(OBJTOOL) |
| 29 | |
| 30 | INCLUDES := -I$(srctree)/tools/include \ |
| 31 | -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \ |
| 32 | -I$(srctree)/tools/objtool/arch/$(ARCH)/include |
| 33 | WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed |
| 34 | CFLAGS += -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) |
| 35 | LDFLAGS += -lelf $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS) |
| 36 | |
| 37 | # Allow old libelf to be used: |
| 38 | elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr) |
| 39 | CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED) |
| 40 | |
| 41 | AWK = awk |
| 42 | export srctree OUTPUT CFLAGS SRCARCH AWK |
| 43 | include $(srctree)/tools/build/Makefile.include |
| 44 | |
| 45 | $(OBJTOOL_IN): fixdep FORCE |
| 46 | @$(MAKE) $(build)=objtool |
| 47 | |
| 48 | $(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) |
| 49 | @$(CONFIG_SHELL) ./sync-check.sh |
| 50 | $(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@ |
| 51 | |
| 52 | |
| 53 | $(LIBSUBCMD): fixdep FORCE |
| 54 | $(Q)$(MAKE) -C $(SUBCMD_SRCDIR) OUTPUT=$(LIBSUBCMD_OUTPUT) |
| 55 | |
| 56 | clean: |
| 57 | $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL) |
| 58 | $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete |
| 59 | $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep |
| 60 | |
| 61 | FORCE: |
| 62 | |
| 63 | .PHONY: clean FORCE |