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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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Makefile
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159# SPDX-License-Identifier: GPL-2.0include ../scripts/Makefile.includeinclude ../scripts/Makefile.arch
ifeq ($(SRCARCH),x86) BUILD_ORC := y ARCH_HAS_KLP := yendif
ifeq ($(SRCARCH),loongarch) BUILD_ORC := yendif
ifeq ($(ARCH_HAS_KLP),y) HAVE_XXHASH = $(shell printf "$(pound)include <xxhash.h>\nXXH3_state_t *state;int main() {}" | \ $(HOSTCC) $(HOSTCFLAGS) -xc - -o /dev/null -lxxhash 2> /dev/null && echo y || echo n) ifeq ($(HAVE_XXHASH),y) BUILD_KLP := y LIBXXHASH_CFLAGS := $(shell $(HOSTPKG_CONFIG) libxxhash --cflags 2>/dev/null) \ -DBUILD_KLP LIBXXHASH_LIBS := $(shell $(HOSTPKG_CONFIG) libxxhash --libs 2>/dev/null || echo -lxxhash) endifendif
export BUILD_ORC BUILD_KLP
ifeq ($(srctree),)srctree := $(patsubst %/,%,$(dir $(CURDIR)))srctree := $(patsubst %/,%,$(dir $(srctree)))endif
RM ?= rm -f
LIBSUBCMD_DIR = $(srctree)/tools/lib/subcmd/ifneq ($(OUTPUT),) LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmdelse LIBSUBCMD_OUTPUT = $(CURDIR)/libsubcmdendifLIBSUBCMD = $(LIBSUBCMD_OUTPUT)/libsubcmd.a
OBJTOOL := $(OUTPUT)objtoolOBJTOOL_IN := $(OBJTOOL)-in.o
LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
all: $(OBJTOOL)
WARNINGS := -Werror -Wall -Wextra -Wmissing-prototypes \ -Wmissing-declarations -Wwrite-strings \ -Wno-implicit-fallthrough -Wno-sign-compare \ -Wno-unused-parameter
INCLUDES := -I$(srctree)/tools/include \ -I$(srctree)/tools/include/uapi \ -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \ -I$(srctree)/tools/arch/$(SRCARCH)/include \ -I$(srctree)/tools/objtool/include \ -I$(srctree)/tools/objtool/arch/$(SRCARCH)/include \ -I$(srctree)/tools/lib
OBJTOOL_CFLAGS := -std=gnu11 -fomit-frame-pointer -O2 -g $(WARNINGS) \ $(INCLUDES) $(LIBELF_FLAGS) $(LIBXXHASH_CFLAGS) $(HOSTCFLAGS)
OBJTOOL_LDFLAGS := $(LIBSUBCMD) $(LIBELF_LIBS) $(LIBXXHASH_LIBS) $(HOSTLDFLAGS)
# Allow old libelf to be used:elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(HOSTCC) $(OBJTOOL_CFLAGS) -x c -E - 2>/dev/null | grep elf_getshdr)OBJTOOL_CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
# Always want host compilation.HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)"
## To support disassembly, objtool needs libopcodes which is provided# with libbfd (binutils-dev or binutils-devel package).## We check using HOSTCC directly rather than the shared feature framework# because objtool is a host tool that links against host libraries.## When using shared libraries, -lopcodes is sufficient as dependencies are# resolved automatically. With static libraries, we must explicitly link# against libopcodes' dependencies: libbfd, libiberty, and sometimes libz.# Try each combination and use the first one that succeeds.#LIBOPCODES_LIBS := $(shell \ for libs in "-lopcodes" \ "-lopcodes -lbfd" \ "-lopcodes -lbfd -liberty" \ "-lopcodes -lbfd -liberty -lz"; do \ printf '%s\n' \ '$(pound)include <bfd.h>' \ '$(pound)include <dis-asm.h>' \ 'int main(void) { disassemble_init_for_target(0); return 0; }' | \ $(HOSTCC) $(HOSTCFLAGS) -DPACKAGE='"objtool"' -xc - -o /dev/null $$libs 2>/dev/null && \ echo "$$libs" && break; \ done)
# Styled disassembler support requires binutils >= 2.39HAVE_DISASM_STYLED := $(shell echo '$(pound)include <dis-asm.h>' | \ $(HOSTCC) -E -xc - 2>/dev/null | grep -q disassembler_style && echo y)
BUILD_DISAS := n
ifneq ($(LIBOPCODES_LIBS),) BUILD_DISAS := y OBJTOOL_CFLAGS += -DDISAS -DPACKAGE='"objtool"' OBJTOOL_LDFLAGS += $(LIBOPCODES_LIBS)ifeq ($(HAVE_DISASM_STYLED),y) OBJTOOL_CFLAGS += -DDISASM_INIT_STYLEDendifendif
export BUILD_DISAS
AWK = awkMKDIR = mkdir
export srctree OUTPUT CFLAGS SRCARCH AWKinclude $(srctree)/tools/build/Makefile.include
$(OBJTOOL_IN): fixdep $(LIBSUBCMD) FORCE $(Q)$(CONFIG_SHELL) ./sync-check.sh $(Q)$(MAKE) $(build)=objtool $(HOST_OVERRIDES) CFLAGS="$(OBJTOOL_CFLAGS)" \ LDFLAGS="$(OBJTOOL_LDFLAGS)"
$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN) $(QUIET_LINK)$(HOSTCC) $(OBJTOOL_IN) $(OBJTOOL_LDFLAGS) -o $@
$(LIBSUBCMD_OUTPUT): $(Q)$(MKDIR) -p $@
$(LIBSUBCMD): fixdep $(LIBSUBCMD_OUTPUT) FORCE $(Q)$(MAKE) -C $(LIBSUBCMD_DIR) O=$(LIBSUBCMD_OUTPUT) \ DESTDIR=$(LIBSUBCMD_OUTPUT) prefix= subdir= \ $(HOST_OVERRIDES) EXTRA_CFLAGS="$(OBJTOOL_CFLAGS)" \ $@
$(LIBSUBCMD)-clean: $(call QUIET_CLEAN, libsubcmd) $(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT)
clean: $(LIBSUBCMD)-clean $(Q)find $(OUTPUT) \( -name '*.o' -o -name '\.*.cmd' -o -name '\.*.d' \) -type f -print | xargs $(RM) $(Q)$(RM) $(OUTPUT)arch/x86/lib/cpu-feature-names.c $(OUTPUT)fixdep $(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep $(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.objtool $(Q)$(RM) -r -- $(OUTPUT)feature
mrproper: clean $(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL)
FORCE:
.PHONY: clean mrproper FORCE