1 # SPDX-License-Identifier: GPL-2.0 2 include ../scripts/Makefile.include 3 include ../scripts/Makefile.arch 4 5 ifeq ($(srctree),) 6 srctree := $(patsubst %/,%,$(dir $(CURDIR))) 7 srctree := $(patsubst %/,%,$(dir $(srctree))) 8 endif 9 10 LIBSUBCMD_DIR = $(srctree)/tools/lib/subcmd/ 11 ifneq ($(OUTPUT),) 12 LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd 13 else 14 LIBSUBCMD_OUTPUT = $(CURDIR)/libsubcmd 15 endif 16 LIBSUBCMD = $(LIBSUBCMD_OUTPUT)/libsubcmd.a 17 18 OBJTOOL := $(OUTPUT)objtool 19 OBJTOOL_IN := $(OBJTOOL)-in.o 20 21 LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null) 22 LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) 23 24 all: $(OBJTOOL) 25 26 INCLUDES := -I$(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. 34 WARNINGS := $(EXTRA_WARNINGS) -Wno-switch-default -Wno-switch-enum -Wno-packed -Wno-nested-externs 35 OBJTOOL_CFLAGS := -Werror $(WARNINGS) $(KBUILD_HOSTCFLAGS) -g $(INCLUDES) $(LIBELF_FLAGS) 36 OBJTOOL_LDFLAGS := $(LIBELF_LIBS) $(LIBSUBCMD) $(KBUILD_HOSTLDFLAGS) 37 38 # Allow old libelf to be used: 39 elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(HOSTCC) $(OBJTOOL_CFLAGS) -x c -E - | grep elf_getshdr) 40 OBJTOOL_CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED) 41 42 # Always want host compilation. 43 HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" 44 45 AWK = awk 46 MKDIR = mkdir 47 48 ifeq ($(V),1) 49 Q = 50 else 51 Q = @ 52 endif 53 54 BUILD_ORC := n 55 56 ifeq ($(SRCARCH),x86) 57 BUILD_ORC := y 58 endif 59 60 ifeq ($(SRCARCH),loongarch) 61 BUILD_ORC := y 62 endif 63 64 export BUILD_ORC 65 export srctree OUTPUT CFLAGS SRCARCH AWK 66 include $(srctree)/tools/build/Makefile.include 67 68 $(OBJTOOL_IN): fixdep $(LIBSUBCMD) FORCE 69 $(Q)$(CONFIG_SHELL) ./sync-check.sh 70 $(Q)$(MAKE) $(build)=objtool $(HOST_OVERRIDES) CFLAGS="$(OBJTOOL_CFLAGS)" \ 71 LDFLAGS="$(OBJTOOL_LDFLAGS)" 72 73 74 $(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) 75 $(QUIET_LINK)$(HOSTCC) $(OBJTOOL_IN) $(OBJTOOL_LDFLAGS) -o $@ 76 77 78 $(LIBSUBCMD_OUTPUT): 79 $(Q)$(MKDIR) -p $@ 80 81 $(LIBSUBCMD): fixdep $(LIBSUBCMD_OUTPUT) FORCE 82 $(Q)$(MAKE) -C $(LIBSUBCMD_DIR) O=$(LIBSUBCMD_OUTPUT) \ 83 DESTDIR=$(LIBSUBCMD_OUTPUT) prefix= subdir= \ 84 $(HOST_OVERRIDES) EXTRA_CFLAGS="$(OBJTOOL_CFLAGS)" \ 85 $@ install_headers 86 87 $(LIBSUBCMD)-clean: 88 $(call QUIET_CLEAN, libsubcmd) 89 $(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT) 90 91 clean: $(LIBSUBCMD)-clean 92 $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL) 93 $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete 94 $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep 95 96 FORCE: 97 98 .PHONY: clean FORCE
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