1# SPDX-License-Identifier: GPL-2.0 2include ../scripts/Makefile.include 3include ../scripts/Makefile.arch 4 5ifeq ($(SRCARCH),x86) 6 BUILD_ORC := y 7 ARCH_HAS_KLP := y 8endif 9 10ifeq ($(SRCARCH),loongarch) 11 BUILD_ORC := y 12endif 13 14ifeq ($(ARCH_HAS_KLP),y) 15 HAVE_XXHASH = $(shell echo "int main() {}" | \ 16 $(HOSTCC) -xc - -o /dev/null -lxxhash 2> /dev/null && echo y || echo n) 17 ifeq ($(HAVE_XXHASH),y) 18 LIBXXHASH_CFLAGS := $(shell $(HOSTPKG_CONFIG) libxxhash --cflags 2>/dev/null) \ 19 -DBUILD_KLP 20 LIBXXHASH_LIBS := $(shell $(HOSTPKG_CONFIG) libxxhash --libs 2>/dev/null || echo -lxxhash) 21 endif 22endif 23 24export BUILD_ORC 25 26ifeq ($(srctree),) 27srctree := $(patsubst %/,%,$(dir $(CURDIR))) 28srctree := $(patsubst %/,%,$(dir $(srctree))) 29endif 30 31LIBSUBCMD_DIR = $(srctree)/tools/lib/subcmd/ 32ifneq ($(OUTPUT),) 33 LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd 34else 35 LIBSUBCMD_OUTPUT = $(CURDIR)/libsubcmd 36endif 37LIBSUBCMD = $(LIBSUBCMD_OUTPUT)/libsubcmd.a 38 39OBJTOOL := $(OUTPUT)objtool 40OBJTOOL_IN := $(OBJTOOL)-in.o 41 42LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null) 43LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) 44 45all: $(OBJTOOL) 46 47WARNINGS := -Werror -Wall -Wextra -Wmissing-prototypes \ 48 -Wmissing-declarations -Wwrite-strings \ 49 -Wno-implicit-fallthrough -Wno-sign-compare \ 50 -Wno-unused-parameter 51 52INCLUDES := -I$(srctree)/tools/include \ 53 -I$(srctree)/tools/include/uapi \ 54 -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \ 55 -I$(srctree)/tools/arch/$(SRCARCH)/include \ 56 -I$(srctree)/tools/objtool/include \ 57 -I$(srctree)/tools/objtool/arch/$(SRCARCH)/include \ 58 -I$(LIBSUBCMD_OUTPUT)/include 59 60OBJTOOL_CFLAGS := -std=gnu11 -fomit-frame-pointer -O2 -g $(WARNINGS) \ 61 $(INCLUDES) $(LIBELF_FLAGS) $(LIBXXHASH_CFLAGS) $(HOSTCFLAGS) 62 63OBJTOOL_LDFLAGS := $(LIBSUBCMD) $(LIBELF_LIBS) $(LIBXXHASH_LIBS) $(HOSTLDFLAGS) 64 65# Allow old libelf to be used: 66elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(HOSTCC) $(OBJTOOL_CFLAGS) -x c -E - 2>/dev/null | grep elf_getshdr) 67OBJTOOL_CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED) 68 69# Always want host compilation. 70HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" 71 72AWK = awk 73MKDIR = mkdir 74 75export srctree OUTPUT CFLAGS SRCARCH AWK 76include $(srctree)/tools/build/Makefile.include 77 78$(OBJTOOL_IN): fixdep $(LIBSUBCMD) FORCE 79 $(Q)$(CONFIG_SHELL) ./sync-check.sh 80 $(Q)$(MAKE) $(build)=objtool $(HOST_OVERRIDES) CFLAGS="$(OBJTOOL_CFLAGS)" \ 81 LDFLAGS="$(OBJTOOL_LDFLAGS)" 82 83 84$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) 85 $(QUIET_LINK)$(HOSTCC) $(OBJTOOL_IN) $(OBJTOOL_LDFLAGS) -o $@ 86 87 88$(LIBSUBCMD_OUTPUT): 89 $(Q)$(MKDIR) -p $@ 90 91$(LIBSUBCMD): fixdep $(LIBSUBCMD_OUTPUT) FORCE 92 $(Q)$(MAKE) -C $(LIBSUBCMD_DIR) O=$(LIBSUBCMD_OUTPUT) \ 93 DESTDIR=$(LIBSUBCMD_OUTPUT) prefix= subdir= \ 94 $(HOST_OVERRIDES) EXTRA_CFLAGS="$(OBJTOOL_CFLAGS)" \ 95 $@ install_headers 96 97$(LIBSUBCMD)-clean: 98 $(call QUIET_CLEAN, libsubcmd) 99 $(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT) 100 101clean: $(LIBSUBCMD)-clean 102 $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL) 103 $(Q)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete 104 $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep 105 106FORCE: 107 108.PHONY: clean FORCE 109