# SPDX-License-Identifier: GPL-2.0
VERSION = 5
-PATCHLEVEL = 12
+PATCHLEVEL = 13
SUBLEVEL = 0
-EXTRAVERSION = -rc7
+EXTRAVERSION = -rc1
NAME = Frozen Wasteland
# *DOCUMENTATION*
$(version_h) headers headers_% archheaders archscripts \
%asm-generic kernelversion %src-pkg dt_binding_check \
outputmakefile
+# Installation targets should not require compiler. Unfortunately, vdso_install
+# is an exception where build artifacts may be updated. This must be fixed.
+no-compiler-targets := $(no-dot-config-targets) install dtbs_install \
+ headers_install modules_install kernelrelease image_name
no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \
image_name
single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/
config-build :=
mixed-build :=
need-config := 1
+need-compiler := 1
may-sync-config := 1
single-build :=
endif
endif
+ifneq ($(filter $(no-compiler-targets), $(MAKECMDGOALS)),)
+ ifeq ($(filter-out $(no-compiler-targets), $(MAKECMDGOALS)),)
+ need-compiler :=
+ endif
+endif
+
ifneq ($(filter $(no-sync-config-targets), $(MAKECMDGOALS)),)
ifeq ($(filter-out $(no-sync-config-targets), $(MAKECMDGOALS)),)
may-sync-config :=
else # !mixed-build
-include scripts/Kbuild.include
+include $(srctree)/scripts/Kbuild.include
# Read KERNELRELEASE from include/config/kernel.release (if it exists)
KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
-include scripts/subarch.include
+include $(srctree)/scripts/subarch.include
# Cross compiling and selecting different set of gcc/bin-utils
# ---------------------------------------------------------------------------
SRCARCH := sparc
endif
-# Additional ARCH settings for sh
-ifeq ($(ARCH),sh64)
- SRCARCH := sh
+export cross_compiling :=
+ifneq ($(SRCARCH),$(SUBARCH))
+cross_compiling := 1
endif
KCONFIG_CONFIG ?= .config
export KCONFIG_CONFIG
-# Default file for 'make defconfig'. This may be overridden by arch-Makefile.
-export KBUILD_DEFCONFIG := defconfig
-
# SHELL used by kbuild
CONFIG_SHELL := sh
# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile.
# CC_VERSION_TEXT is referenced from Kconfig (so it needs export),
# and from include/config/auto.conf.cmd to detect the compiler upgrade.
-CC_VERSION_TEXT = $(shell $(CC) --version 2>/dev/null | head -n 1 | sed 's/\#//g')
+CC_VERSION_TEXT = $(subst $(pound),,$(shell $(CC) --version 2>/dev/null | head -n 1))
ifneq ($(findstring clang,$(CC_VERSION_TEXT)),)
ifneq ($(CROSS_COMPILE),)
CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
-GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
-CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
-GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..)
-endif
-ifneq ($(GCC_TOOLCHAIN),)
-CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN)
endif
-ifneq ($(LLVM_IAS),1)
+ifeq ($(LLVM_IAS),1)
+CLANG_FLAGS += -integrated-as
+else
CLANG_FLAGS += -no-integrated-as
+GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
+CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
endif
CLANG_FLAGS += -Werror=unknown-warning-option
KBUILD_CFLAGS += $(CLANG_FLAGS)
export CLANG_FLAGS
endif
+# Include this also for config targets because some architectures need
+# cc-cross-prefix to determine CROSS_COMPILE.
+ifdef need-compiler
+include $(srctree)/scripts/Makefile.compiler
+endif
+
ifdef config-build
# ===========================================================================
# *config targets only - make sure prerequisites are updated, and descend
# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
# KBUILD_DEFCONFIG may point out an alternative default configuration
# used for 'make defconfig'
-include arch/$(SRCARCH)/Makefile
+include $(srctree)/arch/$(SRCARCH)/Makefile
export KBUILD_DEFCONFIG KBUILD_KCONFIG CC_VERSION_TEXT
config: outputmakefile scripts_basic FORCE
export RETPOLINE_CFLAGS
export RETPOLINE_VDSO_CFLAGS
-include arch/$(SRCARCH)/Makefile
+include $(srctree)/arch/$(SRCARCH)/Makefile
ifdef need-config
ifdef may-sync-config
KBUILD_CFLAGS += -mno-global-merge
else
-# These warnings generated too much noise in a regular build.
-# Use make W=1 to enable them (see scripts/Makefile.extrawarn)
-KBUILD_CFLAGS += -Wno-unused-but-set-variable
-
# Warn about unmarked fall-throughs in switch statement.
# Disabled for clang while comment to attribute conversion happens and
# https://github.com/ClangBuiltLinux/linux/issues/636 is discussed.
KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough,)
endif
+# These warnings generated too much noise in a regular build.
+# Use make W=1 to enable them (see scripts/Makefile.extrawarn)
+KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
+
KBUILD_CFLAGS += $(call cc-disable-warning, unused-const-variable)
ifdef CONFIG_FRAME_POINTER
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
KBUILD_CFLAGS += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
endif
+# While VLAs have been removed, GCC produces unreachable stack probes
+# for the randomize_kstack_offset feature. Disable it for all compilers.
+KBUILD_CFLAGS += $(call cc-option, -fno-stack-clash-protection)
+
DEBUG_CFLAGS :=
# Workaround for GCC versions < 5.0
ifdef CONFIG_LTO_CLANG
ifdef CONFIG_LTO_CLANG_THIN
CC_FLAGS_LTO := -flto=thin -fsplit-lto-unit
-KBUILD_LDFLAGS += --thinlto-cache-dir=$(extmod-prefix).thinlto-cache
+KBUILD_LDFLAGS += --thinlto-cache-dir=$(extmod_prefix).thinlto-cache
else
CC_FLAGS_LTO := -flto
endif
export CC_FLAGS_LTO
endif
+ifdef CONFIG_CFI_CLANG
+CC_FLAGS_CFI := -fsanitize=cfi \
+ -fsanitize-cfi-cross-dso \
+ -fno-sanitize-cfi-canonical-jump-tables \
+ -fno-sanitize-trap=cfi \
+ -fno-sanitize-blacklist
+
+ifdef CONFIG_CFI_PERMISSIVE
+CC_FLAGS_CFI += -fsanitize-recover=cfi
+endif
+
+# If LTO flags are filtered out, we must also filter out CFI.
+CC_FLAGS_LTO += $(CC_FLAGS_CFI)
+KBUILD_CFLAGS += $(CC_FLAGS_CFI)
+export CC_FLAGS_CFI
+endif
+
ifdef CONFIG_DEBUG_FORCE_FUNCTION_ALIGN_32B
KBUILD_CFLAGS += -falign-functions=32
endif
MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
export MODLIB
-#
-# INSTALL_MOD_STRIP, if defined, will cause modules to be
-# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
-# the default option --strip-debug will be used. Otherwise,
-# INSTALL_MOD_STRIP value will be used as the options to the strip command.
-
-ifdef INSTALL_MOD_STRIP
-ifeq ($(INSTALL_MOD_STRIP),1)
-mod_strip_cmd = $(STRIP) --strip-debug
-else
-mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
-endif # INSTALL_MOD_STRIP=1
-else
-mod_strip_cmd = true
-endif # INSTALL_MOD_STRIP
-export mod_strip_cmd
-
-# CONFIG_MODULE_COMPRESS, if defined, will cause module to be compressed
-# after they are installed in agreement with CONFIG_MODULE_COMPRESS_GZIP
-# or CONFIG_MODULE_COMPRESS_XZ.
-
-mod_compress_cmd = true
-ifdef CONFIG_MODULE_COMPRESS
- ifdef CONFIG_MODULE_COMPRESS_GZIP
- mod_compress_cmd = $(KGZIP) -n -f
- endif # CONFIG_MODULE_COMPRESS_GZIP
- ifdef CONFIG_MODULE_COMPRESS_XZ
- mod_compress_cmd = $(XZ) --lzma2=dict=2MiB -f
- endif # CONFIG_MODULE_COMPRESS_XZ
-endif # CONFIG_MODULE_COMPRESS
-export mod_compress_cmd
-
-ifdef CONFIG_MODULE_SIG_ALL
-$(eval $(call config_filename,MODULE_SIG_KEY))
-
-mod_sign_cmd = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509
-else
-mod_sign_cmd = true
-endif
-export mod_sign_cmd
-
HOST_LIBELF_LIBS = $(shell pkg-config libelf --libs 2>/dev/null || echo -lelf)
has_libelf = $(call try-run,\
- echo "int main() {}" | $(HOSTCC) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0)
+ echo "int main() {}" | $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -xc -o /dev/null $(HOST_LIBELF_LIBS) -,1,0)
ifdef CONFIG_STACK_VALIDATION
ifeq ($(has_libelf),1)
PHONY += prepare0
-extmod-prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)
-export MODORDER := $(extmod-prefix)modules.order
-export MODULES_NSDEPS := $(extmod-prefix)modules.nsdeps
+export extmod_prefix = $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)
+export MODORDER := $(extmod_prefix)modules.order
+export MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps
ifeq ($(KBUILD_EXTMOD),)
core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
- +$(call if_changed,link-vmlinux)
+ +$(call if_changed_dep,link-vmlinux)
targets := vmlinux
archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \
asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \
- include/generated/autoconf.h
+ include/generated/autoconf.h remove-stale-files
prepare0: archprepare
$(Q)$(MAKE) $(build)=scripts/mod
# All the preparing..
prepare: prepare0 prepare-objtool prepare-resolve_btfids
+PHONY += remove-stale-files
+remove-stale-files:
+ $(Q)$(srctree)/scripts/remove-stale-files
+
# Support for using generic headers in asm-generic
asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj
# Deprecated. It is no-op now.
PHONY += headers_check
headers_check:
- @:
+ @echo >&2 "=================== WARNING ==================="
+ @echo >&2 "Since Linux 5.5, 'make headers_check' is no-op,"
+ @echo >&2 "and will be removed after Linux 5.15 release."
+ @echo >&2 "Please remove headers_check from your scripts."
+ @echo >&2 "==============================================="
ifdef CONFIG_HEADERS_INSTALL
prepare: headers
PHONY += modules
modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_check modules_prepare
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
-
-PHONY += modules_check
-modules_check: modules.order
- $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $<
cmd_modules_order = $(AWK) '!x[$$0]++' $(real-prereqs) > $@
modules_prepare: prepare
$(Q)$(MAKE) $(build)=scripts scripts/module.lds
-# Target to install modules
-PHONY += modules_install
-modules_install: _modinst_ _modinst_post
+export modules_sign_only :=
+
+ifeq ($(CONFIG_MODULE_SIG),y)
+PHONY += modules_sign
+modules_sign: modules_install
+ @:
+
+# modules_sign is a subset of modules_install.
+# 'make modules_install modules_sign' is equivalent to 'make modules_install'.
+ifeq ($(filter modules_install,$(MAKECMDGOALS)),)
+modules_sign_only := y
+endif
+endif
-PHONY += _modinst_
-_modinst_:
+modinst_pre :=
+ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
+modinst_pre := __modinst_pre
+endif
+
+modules_install: $(modinst_pre)
+PHONY += __modinst_pre
+__modinst_pre:
@rm -rf $(MODLIB)/kernel
@rm -f $(MODLIB)/source
@mkdir -p $(MODLIB)/kernel
@sed 's:^:kernel/:' modules.order > $(MODLIB)/modules.order
@cp -f modules.builtin $(MODLIB)/
@cp -f $(objtree)/modules.builtin.modinfo $(MODLIB)/
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
-
-# This depmod is only for convenience to give the initial
-# boot a modules.dep even before / is mounted read-write. However the
-# boot script depmod is the master version.
-PHONY += _modinst_post
-_modinst_post: _modinst_
- $(call cmd,depmod)
-
-ifeq ($(CONFIG_MODULE_SIG), y)
-PHONY += modules_sign
-modules_sign:
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign
-endif
-
-else # CONFIG_MODULES
-
-# Modules not configured
-# ---------------------------------------------------------------------------
-
-PHONY += modules modules_install
-modules modules_install:
- @echo >&2
- @echo >&2 "The present kernel configuration has modules disabled."
- @echo >&2 "Type 'make config' and enable loadable module support."
- @echo >&2 "Then build a kernel with module support enabled."
- @echo >&2
- @exit 1
endif # CONFIG_MODULES
# make distclean Remove editor backup files, patch leftover files and the like
# Directories & files removed with 'make clean'
-CLEAN_FILES += include/ksym vmlinux.symvers \
+CLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \
modules.builtin modules.builtin.modinfo modules.nsdeps \
compile_commands.json .thinlto-cache
debian snap tar-install \
.config .config.old .version \
Module.symvers \
- signing_key.pem signing_key.priv signing_key.x509 \
- x509.genkey extra_certificates signing_key.x509.keyid \
- signing_key.x509.signer vmlinux-gdb.py \
+ certs/signing_key.pem certs/signing_key.x509 \
+ certs/x509.genkey \
+ vmlinux-gdb.py \
*.spec
-# Directories & files removed with 'make distclean'
-DISTCLEAN_FILES += tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
-
# clean - Delete most, but leave enough to build external modules
#
clean: rm-files := $(CLEAN_FILES)
# distclean
#
-distclean: rm-files := $(wildcard $(DISTCLEAN_FILES))
-
PHONY += distclean
distclean: mrproper
- $(call cmd,rmfiles)
- @find $(srctree) $(RCS_FIND_IGNORE) \
+ @find . $(RCS_FIND_IGNORE) \
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
-o -name '*.bak' -o -name '#*#' -o -name '*%' \
- -o -name 'core' \) \
+ -o -name 'core' -o -name tags -o -name TAGS -o -name 'cscope*' \
+ -o -name GPATH -o -name GRTAGS -o -name GSYMS -o -name GTAGS \) \
-type f -print | xargs rm -f
# When building external modules the kernel used as basis is considered
# read-only, and no consistency checks are made and the make
# system is not used on the basis kernel. If updates are required
-# in the basis kernel ordinary make commands (without M=...) must
-# be used.
-#
-# The following are the only valid targets when building external
-# modules.
-# make M=dir clean Delete all automatically generated files
-# make M=dir modules Make all modules in specified dir
-# make M=dir Same as 'make M=dir modules'
-# make M=dir modules_install
-# Install the modules built in the module directory
-# Assumes install directory is already created
+# in the basis kernel ordinary make commands (without M=...) must be used.
# We are always building only modules.
KBUILD_BUILTIN :=
KBUILD_MODULES := 1
build-dirs := $(KBUILD_EXTMOD)
-PHONY += modules
-modules: $(MODORDER)
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
-
$(MODORDER): descend
@:
-PHONY += modules_install
-modules_install: _emodinst_ _emodinst_post
-
-install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
-PHONY += _emodinst_
-_emodinst_:
- $(Q)mkdir -p $(MODLIB)/$(install-dir)
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
-
-PHONY += _emodinst_post
-_emodinst_post: _emodinst_
- $(call cmd,depmod)
-
-compile_commands.json: $(extmod-prefix)compile_commands.json
+compile_commands.json: $(extmod_prefix)compile_commands.json
PHONY += compile_commands.json
clean-dirs := $(KBUILD_EXTMOD)
endif # KBUILD_EXTMOD
+# ---------------------------------------------------------------------------
+# Modules
+
+PHONY += modules modules_install
+
+ifdef CONFIG_MODULES
+
+modules: modules_check
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+
+PHONY += modules_check
+modules_check: $(MODORDER)
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/modules-check.sh $<
+
+quiet_cmd_depmod = DEPMOD $(MODLIB)
+ cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
+ $(KERNELRELEASE)
+
+modules_install:
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
+ $(call cmd,depmod)
+
+else # CONFIG_MODULES
+
+# Modules not configured
+# ---------------------------------------------------------------------------
+
+modules modules_install:
+ @echo >&2 '***'
+ @echo >&2 '*** The present kernel configuration has modules disabled.'
+ @echo >&2 '*** To use the module feature, please run "make menuconfig" etc.'
+ @echo >&2 '*** to enable CONFIG_MODULES.'
+ @echo >&2 '***'
+ @exit 1
+
+endif # CONFIG_MODULES
+
# Single targets
# ---------------------------------------------------------------------------
# To build individual files in subdirectories, you can do like this:
PHONY += single_modpost
single_modpost: $(single-no-ko) modules_prepare
- $(Q){ $(foreach m, $(single-ko), echo $(extmod-prefix)$m;) } > $(MODORDER)
+ $(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$m;) } > $(MODORDER)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
KBUILD_MODULES := 1
-export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod-prefix), $(single-no-ko))
+export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod_prefix), $(single-no-ko))
# trim unrelated directories
build-dirs := $(foreach d, $(build-dirs), \
quiet_cmd_gen_compile_commands = GEN $@
cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs))
-$(extmod-prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \
+$(extmod_prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \
$(if $(KBUILD_EXTMOD),,$(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)) \
$(if $(CONFIG_MODULES), $(MODORDER)) FORCE
$(call if_changed,gen_compile_commands)
-targets += $(extmod-prefix)compile_commands.json
+targets += $(extmod_prefix)compile_commands.json
PHONY += clang-tidy clang-analyzer
quiet_cmd_clang_tools = CHECK $<
cmd_clang_tools = $(PYTHON3) $(srctree)/scripts/clang-tools/run-clang-tools.py $@ $<
-clang-tidy clang-analyzer: $(extmod-prefix)compile_commands.json
+clang-tidy clang-analyzer: $(extmod_prefix)compile_commands.json
$(call cmd,clang_tools)
else
clang-tidy clang-analyzer:
quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
cmd_rmfiles = rm -rf $(rm-files)
-# Run depmod only if we have System.map and depmod is executable
-quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
- cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
- $(KERNELRELEASE)
-
# read saved command lines for existing targets
existing-targets := $(wildcard $(sort $(targets)))
git.samba.org / sfrench / cifs-2.6.git / blobdiff