# SPDX-License-Identifier: GPL-2.0
-VERSION = 4
-PATCHLEVEL = 20
+VERSION = 5
+PATCHLEVEL = 0
SUBLEVEL = 0
-EXTRAVERSION =
+EXTRAVERSION = -rc1
NAME = Shy Crocodile
# *DOCUMENTATION*
# Old syntax make ... SUBDIRS=$PWD is still supported
# Setting the environment variable KBUILD_EXTMOD take precedence
ifdef SUBDIRS
+ $(warning ================= WARNING ================)
+ $(warning 'SUBDIRS' will be removed after Linux 5.3)
+ $(warning Please use 'M=' or 'KBUILD_EXTMOD' instead)
+ $(warning ==========================================)
KBUILD_EXTMOD ?= $(SUBDIRS)
endif
-I$(objtree)/include \
$(USERINCLUDE)
-KBUILD_AFLAGS := -D__ASSEMBLY__
-KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
- -fno-strict-aliasing -fno-common -fshort-wchar \
- -Werror-implicit-function-declaration \
+KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE
+KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
+ -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \
+ -Werror-implicit-function-declaration -Werror=implicit-int \
-Wno-format-security \
-std=gnu89
KBUILD_CPPFLAGS := -D__KERNEL__
ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),)
ifneq ($(CROSS_COMPILE),)
-CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%))
+CLANG_FLAGS := --target=$(notdir $(CROSS_COMPILE:%-=%))
GCC_TOOLCHAIN_DIR := $(dir $(shell which $(LD)))
-CLANG_PREFIX := --prefix=$(GCC_TOOLCHAIN_DIR)
+CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)
GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..)
endif
ifneq ($(GCC_TOOLCHAIN),)
-CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN)
+CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN)
endif
-KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX)
-KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX)
-KBUILD_CFLAGS += $(call cc-option, -no-integrated-as)
-KBUILD_AFLAGS += $(call cc-option, -no-integrated-as)
+CLANG_FLAGS += -no-integrated-as
+KBUILD_CFLAGS += $(CLANG_FLAGS)
+KBUILD_AFLAGS += $(CLANG_FLAGS)
+export CLANG_FLAGS
endif
RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register
export RETPOLINE_CFLAGS
export RETPOLINE_VDSO_CFLAGS
-KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
-KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
-
-# check for 'asm goto'
-ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
- CC_HAVE_ASM_GOTO := 1
- KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
- KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
-endif
-
# The expansion should be delayed until arch/$(SRCARCH)/Makefile is included.
# Some architectures define CROSS_COMPILE in arch/$(SRCARCH)/Makefile.
# CC_VERSION_TEXT is referenced from Kconfig (so it needs export),
# conserve stack if available
KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
-# disallow errors like 'EXPORT_GPL(foo);' with missing header
-KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int)
-
-# require functions to have arguments in prototypes, not empty 'int foo()'
-KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes)
-
# Prohibit date/time macros, which would make the build non-deterministic
KBUILD_CFLAGS += $(call cc-option,-Werror=date-time)
$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
-ifdef CONFIG_HEADERS_CHECK
- $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
-endif
ifdef CONFIG_GDB_SCRIPTS
$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
endif
+$(call if_changed,link-vmlinux)
+targets := vmlinux
+
# Build samples along the rest of the kernel. This needs headers_install.
ifdef CONFIG_SAMPLES
vmlinux-dirs += samples
# Error messages still appears in the original language
PHONY += $(vmlinux-dirs)
-$(vmlinux-dirs): prepare scripts
+$(vmlinux-dirs): prepare
$(Q)$(MAKE) $(build)=$@ need-builtin=1
-define filechk_kernel.release
+filechk_kernel.release = \
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
-endef
# Store (new) KERNELRELEASE string in include/config/kernel.release
include/config/kernel.release: $(srctree)/Makefile FORCE
# Carefully list dependencies so we do not try to build scripts twice
# in parallel
PHONY += scripts
-scripts: scripts_basic scripts_dtc asm-generic gcc-plugins $(autoksyms_h)
+scripts: scripts_basic scripts_dtc
$(Q)$(MAKE) $(build)=$(@)
# Things we need to do before we recursively start building the kernel
prepare1: prepare2 $(version_h) $(autoksyms_h) include/generated/utsrelease.h
$(cmd_crmodverdir)
-archprepare: archheaders archscripts prepare1 scripts_basic
+archprepare: archheaders archscripts prepare1 scripts
-prepare0: archprepare gcc-plugins
+prepare0: archprepare
+ $(Q)$(MAKE) $(build)=scripts/mod
$(Q)$(MAKE) $(build)=.
# All the preparing..
prepare: prepare0 prepare-objtool
# Support for using generic headers in asm-generic
+asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj
+
PHONY += asm-generic uapi-asm-generic
asm-generic: uapi-asm-generic
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
- src=asm obj=arch/$(SRCARCH)/include/generated/asm
+ $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm
uapi-asm-generic:
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
- src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm
+ $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/uapi/asm
PHONY += prepare-objtool
prepare-objtool: $(objtool_target)
echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
exit 1; \
fi; \
- (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
+ echo \#define UTS_RELEASE \"$(KERNELRELEASE)\"
endef
define filechk_version.h
- (echo \#define LINUX_VERSION_CODE $(shell \
+ echo \#define LINUX_VERSION_CODE $(shell \
expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
- echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
+ echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'
endef
$(version_h): FORCE
# If we do an all arch process set dst to include/arch-$(SRCARCH)
hdr-dst = $(if $(KBUILD_HEADERS), dst=include/arch-$(SRCARCH), dst=include)
-PHONY += archheaders
-archheaders:
-
-PHONY += archscripts
-archscripts:
+PHONY += archheaders archscripts
PHONY += __headers
__headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts
$(Q)$(MAKE) $(hdr-inst)=include/uapi dst=include HDRCHECK=1
$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi $(hdr-dst) HDRCHECK=1
+ifdef CONFIG_HEADERS_CHECK
+all: headers_check
+endif
+
# ---------------------------------------------------------------------------
# Kernel selftest
# Target to prepare building external modules
PHONY += modules_prepare
-modules_prepare: prepare scripts
+modules_prepare: prepare
# Target to install modules
PHONY += modules_install
# We are always building modules
KBUILD_MODULES := 1
-PHONY += crmodverdir
-crmodverdir:
- $(cmd_crmodverdir)
PHONY += $(objtree)/Module.symvers
$(objtree)/Module.symvers:
module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
PHONY += $(module-dirs) modules
-$(module-dirs): crmodverdir $(objtree)/Module.symvers
+$(module-dirs): prepare $(objtree)/Module.symvers
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
modules: $(module-dirs)
@echo ' clean - remove generated files in module directory only'
@echo ''
-# Dummies...
-PHONY += prepare scripts
-prepare: ;
-scripts: ;
+PHONY += prepare
+prepare:
+ $(cmd_crmodverdir)
endif # KBUILD_EXTMOD
clean: $(clean-dirs)
target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
endif
-%.s: %.c prepare scripts FORCE
+%.s: %.c prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.i: %.c prepare scripts FORCE
+%.i: %.c prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.o: %.c prepare scripts FORCE
+%.o: %.c prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.lst: %.c prepare scripts FORCE
+%.lst: %.c prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.s: %.S prepare scripts FORCE
+%.s: %.S prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.o: %.S prepare scripts FORCE
+%.o: %.S prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.symtypes: %.c prepare scripts FORCE
+%.symtypes: %.c prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.ll: %.c prepare scripts FORCE
+%.ll: %.c prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
# Modules
-/: prepare scripts FORCE
- $(cmd_crmodverdir)
+/: prepare FORCE
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir)
# Make sure the latest headers are built for Documentation
Documentation/ samples/: headers_install
-%/: prepare scripts FORCE
- $(cmd_crmodverdir)
+%/: prepare FORCE
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir)
-%.ko: prepare scripts FORCE
- $(cmd_crmodverdir)
+%.ko: prepare FORCE
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir) $(@:.ko=.o)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
$(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
-# read all saved command lines
-cmd_files := $(wildcard .*.cmd)
+# read saved command lines for existing targets
+existing-targets := $(wildcard $(sort $(targets)))
-ifneq ($(cmd_files),)
- $(cmd_files): ; # Do not try to update included dependency files
- include $(cmd_files)
-endif
+cmd_files := $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
+$(cmd_files): ; # Do not try to update included dependency files
+-include $(cmd_files)
endif # ifeq ($(config-targets),1)
endif # ifeq ($(mixed-targets),1)
git.samba.org / sfrench / cifs-2.6.git / blobdiff