1# SPDX-License-Identifier: GPL-2.0 2include ../scripts/Makefile.include 3include ../scripts/Makefile.arch 4 5ifeq ($(srctree),) 6srctree := $(patsubst %/,%,$(dir $(CURDIR))) 7srctree := $(patsubst %/,%,$(dir $(srctree))) 8endif 9 10LIBSUBCMD_DIR = $(srctree)/tools/lib/subcmd/ 11ifneq ($(OUTPUT),) 12 LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd 13else 14 LIBSUBCMD_OUTPUT = $(CURDIR)/libsubcmd 15endif 16LIBSUBCMD = $(LIBSUBCMD_OUTPUT)/libsubcmd.a 17 18OBJTOOL := $(OUTPUT)objtool 19OBJTOOL_IN := $(OBJTOOL)-in.o 20 21LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null) 22LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) 23 24all: $(OBJTOOL) 25 26INCLUDES := -I$(srctree)/tools/include \ 27 -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \ 28 -I$(srctree)/tools/arch/$(SRCARCH)/include \ 29 -I$(srctree)/tools/objtool/include \ 30 -I$(srctree)/tools/objtool/arch/$(SRCARCH)/include \ 31 -I$(LIBSUBCMD_OUTPUT)/include 32# Note, EXTRA_WARNINGS here was determined for CC and not HOSTCC, it 33# is passed here to match a legacy behavior. 34WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed -Wno-nested-externs 35OBJTOOL_CFLAGS := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS) 36OBJTOOL_LDFLAGS := $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS) 37 38# Allow old libelf to be used: 39elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(HOSTCC) $(OBJTOOL_CFLAGS) -x c -E - | grep elf_getshdr) 40OBJTOOL_CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED) 41 42# Always want host compilation. 43HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" 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 $(LIBSUBCMD) FORCE 65 $(Q)$(CONFIG_SHELL) ./sync-check.sh 66 $(Q)$(MAKE) $(build)=objtool $(HOST_OVERRIDES) CFLAGS="$(OBJTOOL_CFLAGS)" \ 67 LDFLAGS="$(OBJTOOL_LDFLAGS)" 68 69 70$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) 71 $(QUIET_LINK)$(HOSTCC) $(OBJTOOL_IN) $(OBJTOOL_LDFLAGS) -o $@ 72 73 74$(LIBSUBCMD_OUTPUT): 75 $(Q)$(MKDIR) -p $@ 76 77$(LIBSUBCMD): fixdep $(LIBSUBCMD_OUTPUT) FORCE 78 $(Q)$(MAKE) -C $(LIBSUBCMD_DIR) O=$(LIBSUBCMD_OUTPUT) \ 79 DESTDIR=$(LIBSUBCMD_OUTPUT) prefix= subdir= \ 80 $(HOST_OVERRIDES) EXTRA_CFLAGS="$(OBJTOOL_CFLAGS)" \ 81 $@ install_headers 82 83$(LIBSUBCMD)-clean: 84 $(call QUIET_CLEAN, libsubcmd) 85 $(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT) 86 87clean: $(LIBSUBCMD)-clean 88 $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL) 89 $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete 90 $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep 91 92FORCE: 93 94.PHONY: clean FORCE 95