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 15LIBSUBCMD_DIR = $(srctree)/tools/lib/subcmd/ 16ifneq ($(OUTPUT),) 17 LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd 18else 19 LIBSUBCMD_OUTPUT = $(CURDIR)/libsubcmd 20endif 21LIBSUBCMD = $(LIBSUBCMD_OUTPUT)/libsubcmd.a 22 23OBJTOOL := $(OUTPUT)objtool 24OBJTOOL_IN := $(OBJTOOL)-in.o 25 26LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null) 27LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) 28 29all: $(OBJTOOL) 30 31INCLUDES := -I$(srctree)/tools/include \ 32 -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \ 33 -I$(srctree)/tools/arch/$(SRCARCH)/include \ 34 -I$(srctree)/tools/objtool/include \ 35 -I$(srctree)/tools/objtool/arch/$(SRCARCH)/include \ 36 -I$(LIBSUBCMD_OUTPUT)/include 37WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed -Wno-nested-externs 38CFLAGS := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS) 39LDFLAGS += $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS) 40 41# Allow old libelf to be used: 42elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr) 43CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED) 44 45AWK = awk 46MKDIR = mkdir 47 48ifeq ($(V),1) 49 Q = 50else 51 Q = @ 52endif 53 54BUILD_ORC := n 55 56ifeq ($(SRCARCH),x86) 57 BUILD_ORC := y 58endif 59 60export BUILD_ORC 61export srctree OUTPUT CFLAGS SRCARCH AWK 62include $(srctree)/tools/build/Makefile.include 63 64$(OBJTOOL_IN): fixdep FORCE 65 $(Q)$(CONFIG_SHELL) ./sync-check.sh 66 $(Q)$(MAKE) $(build)=objtool 67 68$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) 69 $(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@ 70 71 72$(LIBSUBCMD_OUTPUT): 73 $(Q)$(MKDIR) -p $@ 74 75$(LIBSUBCMD): fixdep $(LIBSUBCMD_OUTPUT) FORCE 76 $(Q)$(MAKE) -C $(LIBSUBCMD_DIR) O=$(LIBSUBCMD_OUTPUT) \ 77 DESTDIR=$(LIBSUBCMD_OUTPUT) prefix= subdir= \ 78 $@ install_headers 79 80$(LIBSUBCMD)-clean: 81 $(call QUIET_CLEAN, libsubcmd) 82 $(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT) 83 84clean: $(LIBSUBCMD)-clean 85 $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL) 86 $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete 87 $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep 88 89FORCE: 90 91.PHONY: clean FORCE 92