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: $(OBJTOOL) 25 26WARNINGS := -Werror -Wall -Wextra -Wmissing-prototypes \ 27 -Wmissing-declarations -Wwrite-strings \ 28 -Wno-implicit-fallthrough -Wno-sign-compare \ 29 -Wno-unused-parameter 30 31INCLUDES := -I$(srctree)/tools/include \ 32 -I$(srctree)/tools/include/uapi \ 33 -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \ 34 -I$(srctree)/tools/arch/$(SRCARCH)/include \ 35 -I$(srctree)/tools/objtool/include \ 36 -I$(srctree)/tools/objtool/arch/$(SRCARCH)/include \ 37 -I$(LIBSUBCMD_OUTPUT)/include 38 39OBJTOOL_CFLAGS := -std=gnu11 -fomit-frame-pointer -O2 -g \ 40 $(WARNINGS) $(INCLUDES) $(LIBELF_FLAGS) $(HOSTCFLAGS) 41 42OBJTOOL_LDFLAGS := $(LIBSUBCMD) $(LIBELF_LIBS) $(HOSTLDFLAGS) 43 44# Allow old libelf to be used: 45elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(HOSTCC) $(OBJTOOL_CFLAGS) -x c -E - 2>/dev/null | grep elf_getshdr) 46OBJTOOL_CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED) 47 48# Always want host compilation. 49HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" 50 51AWK = awk 52MKDIR = mkdir 53 54BUILD_ORC := n 55 56ifeq ($(SRCARCH),x86) 57 BUILD_ORC := y 58endif 59 60ifeq ($(SRCARCH),loongarch) 61 BUILD_ORC := y 62endif 63 64export BUILD_ORC 65export srctree OUTPUT CFLAGS SRCARCH AWK 66include $(srctree)/tools/build/Makefile.include 67 68$(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 91clean: $(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 96FORCE: 97 98.PHONY: clean FORCE 99