# SPDX-License-Identifier: GPL-2.0
VERSION = 6
-PATCHLEVEL = 0
+PATCHLEVEL = 1
SUBLEVEL = 0
-EXTRAVERSION =
+EXTRAVERSION = -rc2
NAME = Hurr durr I'ma ninja sloth
# *DOCUMENTATION*
CFLAGS_KERNEL =
RUSTFLAGS_KERNEL =
AFLAGS_KERNEL =
-LDFLAGS_vmlinux =
+export LDFLAGS_vmlinux =
# Use USERINCLUDE when you must reference the UAPI directories only.
USERINCLUDE := \
} > Makefile
outputmakefile:
- $(Q)if [ -f $(srctree)/.config -o \
+ @if [ -f $(srctree)/.config -o \
-d $(srctree)/include/config -o \
-d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
echo >&2 "***"; \
__all: modules
endif
+targets :=
+
# Decide whether to build built-in, modular, or both.
# Normally, just do built-in.
ifeq ($(KBUILD_EXTMOD),)
# Objects we will link into vmlinux / subdirs we need to visit
-core-y := init/ usr/ arch/$(SRCARCH)/
-drivers-y := drivers/ sound/
-drivers-$(CONFIG_SAMPLES) += samples/
-drivers-$(CONFIG_NET) += net/
-drivers-y += virt/
+core-y :=
+drivers-y :=
libs-y := lib/
endif # KBUILD_EXTMOD
PHONY += include/config/auto.conf
include/config/auto.conf:
- $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
+ @test -e include/generated/autoconf.h -a -e $@ || ( \
echo >&2; \
echo >&2 " ERROR: Kernel configuration is invalid."; \
echo >&2 " include/generated/autoconf.h or $@ are missing.";\
KBUILD_CFLAGS-$(CONFIG_WERROR) += -Werror
KBUILD_CFLAGS-$(CONFIG_CC_NO_ARRAY_BOUNDS) += -Wno-array-bounds
-KBUILD_CFLAGS += $(KBUILD_CFLAGS-y) $(CONFIG_CC_IMPLICIT_FALLTHROUGH)
KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarnings
KBUILD_RUSTFLAGS += $(KBUILD_RUSTFLAGS-y)
KBUILD_CFLAGS += -Wno-maybe-uninitialized
endif
-ifdef CONFIG_CC_IS_GCC
# The allocators already balk at large sizes, so silence the compiler
# warnings for bounds checks involving those possible values. While
# -Wno-alloc-size-larger-than would normally be used here, earlier versions
# ignored, continuing to default to PTRDIFF_MAX. So, left with no other
# choice, we must perform a versioned check to disable this warning.
# https://lore.kernel.org/lkml/20210824115859.187f272f@canb.auug.org.au
-KBUILD_CFLAGS += $(call cc-ifversion, -ge, 0901, -Wno-alloc-size-larger-than)
-endif
+KBUILD_CFLAGS-$(call gcc-min-version, 90100) += -Wno-alloc-size-larger-than
+KBUILD_CFLAGS += $(KBUILD_CFLAGS-y) $(CONFIG_CC_IMPLICIT_FALLTHROUGH)
# disable invalid "can't wrap" optimizations for signed / pointers
KBUILD_CFLAGS += -fno-strict-overflow
include-$(CONFIG_DEBUG_INFO) += scripts/Makefile.debug
include-$(CONFIG_KASAN) += scripts/Makefile.kasan
include-$(CONFIG_KCSAN) += scripts/Makefile.kcsan
+include-$(CONFIG_KMSAN) += scripts/Makefile.kmsan
include-$(CONFIG_UBSAN) += scripts/Makefile.ubsan
include-$(CONFIG_KCOV) += scripts/Makefile.kcov
include-$(CONFIG_RANDSTRUCT) += scripts/Makefile.randstruct
endif
ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
-LDFLAGS_vmlinux += $(call ld-option, -X,)
+LDFLAGS_vmlinux += -X
endif
ifeq ($(CONFIG_RELR),y)
export MODULES_NSDEPS := $(extmod_prefix)modules.nsdeps
ifeq ($(KBUILD_EXTMOD),)
-core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/
-core-$(CONFIG_BLOCK) += block/
-core-$(CONFIG_IO_URING) += io_uring/
-core-$(CONFIG_RUST) += rust/
-vmlinux-dirs := $(patsubst %/,%,$(filter %/, \
- $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
- $(libs-y) $(libs-m)))
-
-vmlinux-alldirs := $(sort $(vmlinux-dirs) Documentation \
+build-dir := .
+clean-dirs := $(sort . Documentation \
$(patsubst %/,%,$(filter %/, $(core-) \
$(drivers-) $(libs-))))
-build-dirs := $(vmlinux-dirs)
-clean-dirs := $(vmlinux-alldirs)
-
-subdir-modorder := $(addsuffix /modules.order, $(build-dirs))
-
+export ARCH_CORE := $(core-y)
+export ARCH_LIB := $(filter %/, $(libs-y))
+export ARCH_DRIVERS := $(drivers-y) $(drivers-m)
# Externally visible symbols (used by link-vmlinux.sh)
-KBUILD_VMLINUX_OBJS := $(head-y) $(patsubst %/,%/built-in.a, $(core-y))
-KBUILD_VMLINUX_OBJS += $(addsuffix built-in.a, $(filter %/, $(libs-y)))
+
+KBUILD_VMLINUX_OBJS := ./built-in.a
ifdef CONFIG_MODULES
KBUILD_VMLINUX_OBJS += $(patsubst %/, %/lib.a, $(filter %/, $(libs-y)))
KBUILD_VMLINUX_LIBS := $(filter-out %/, $(libs-y))
else
KBUILD_VMLINUX_LIBS := $(patsubst %/,%/lib.a, $(libs-y))
endif
-KBUILD_VMLINUX_OBJS += $(patsubst %/,%/built-in.a, $(drivers-y))
-export KBUILD_VMLINUX_OBJS KBUILD_VMLINUX_LIBS
+export KBUILD_VMLINUX_LIBS
export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds
-# used by scripts/Makefile.package
-export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) LICENSES arch include scripts tools)
-
-vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)
# Recurse until adjust_autoksyms.sh is satisfied
PHONY += autoksyms_recursive
# (this can be evaluated only once include/config/auto.conf has been included)
KBUILD_MODULES := 1
-autoksyms_recursive: descend modules.order
+autoksyms_recursive: $(build-dir) modules.order
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
"$(MAKE) -f $(srctree)/Makefile autoksyms_recursive"
endif
$(autoksyms_h):
$(call cmd,autoksyms_h)
-ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
+# '$(AR) mPi' needs 'T' to workaround the bug of llvm-ar <= 14
+quiet_cmd_ar_vmlinux.a = AR $@
+ cmd_ar_vmlinux.a = \
+ rm -f $@; \
+ $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \
+ $(AR) mPiT $$($(AR) t $@ | head -n1) $@ $$($(AR) t $@ | grep -F --file=$(srctree)/scripts/head-object-list.txt)
-# Final link of vmlinux with optional arch pass after final link
-cmd_link-vmlinux = \
- $(CONFIG_SHELL) $< "$(LD)" "$(KBUILD_LDFLAGS)" "$(LDFLAGS_vmlinux)"; \
- $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
+targets += vmlinux.a
+vmlinux.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt autoksyms_recursive FORCE
+ $(call if_changed,ar_vmlinux.a)
-vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
- +$(call if_changed_dep,link-vmlinux)
+PHONY += vmlinux_o
+vmlinux_o: vmlinux.a $(KBUILD_VMLINUX_LIBS)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux_o
-targets := vmlinux
+vmlinux.o modules.builtin.modinfo modules.builtin: vmlinux_o
+ @:
+
+PHONY += vmlinux
+vmlinux: vmlinux.o $(KBUILD_LDS) modpost
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vmlinux
# The actual objects are generated when descending,
# make sure no implicit rule kicks in
-$(sort $(vmlinux-deps) $(subdir-modorder)): descend ;
+$(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)): . ;
filechk_kernel.release = \
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
archprepare: outputmakefile archheaders archscripts scripts include/config/kernel.release \
asm-generic $(version_h) $(autoksyms_h) include/generated/utsrelease.h \
- include/generated/autoconf.h remove-stale-files
+ include/generated/compile.h include/generated/autoconf.h remove-stale-files
prepare0: archprepare
$(Q)$(MAKE) $(build)=scripts/mod
- $(Q)$(MAKE) $(build)=.
+ $(Q)$(MAKE) $(build)=. prepare
# All the preparing..
prepare: prepare0
include/generated/utsrelease.h: include/config/kernel.release FORCE
$(call filechk,utsrelease.h)
+filechk_compile.h = $(srctree)/scripts/mkcompile_h \
+ "$(UTS_MACHINE)" "$(CONFIG_CC_VERSION_TEXT)" "$(LD)"
+
+include/generated/compile.h: FORCE
+ $(call filechk,compile.h)
+
PHONY += headerdep
headerdep:
$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
dt_binding_check: scripts_dtc
$(Q)$(MAKE) $(build)=Documentation/devicetree/bindings
+PHONY += dt_compatible_check
+dt_compatible_check: dt_binding_check
+ $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings $@
+
# ---------------------------------------------------------------------------
# Modules
# Build modules
#
-# A module can be listed more than once in obj-m resulting in
-# duplicate lines in modules.order files. Those are removed
-# using awk while concatenating to the final file.
-PHONY += modules
-modules: $(if $(KBUILD_BUILTIN),vmlinux) modules_check modules_prepare
-
-cmd_modules_order = $(AWK) '!x[$$0]++' $(real-prereqs) > $@
-
-modules.order: $(subdir-modorder) FORCE
- $(call if_changed,modules_order)
+# *.ko are usually independent of vmlinux, but CONFIG_DEBUG_INFOBTF_MODULES
+# is an exception.
+ifdef CONFIG_DEBUG_INFO_BTF_MODULES
+modules: vmlinux
+endif
-targets += modules.order
+modules: modules_prepare
# Target to prepare building external modules
-PHONY += modules_prepare
modules_prepare: prepare
$(Q)$(MAKE) $(build)=scripts scripts/module.lds
# Directories & files removed with 'make clean'
CLEAN_FILES += include/ksym vmlinux.symvers modules-only.symvers \
modules.builtin modules.builtin.modinfo modules.nsdeps \
- compile_commands.json .thinlto-cache rust/test rust/doc
+ compile_commands.json .thinlto-cache rust/test rust/doc \
+ .vmlinux.objs .vmlinux.export.c
# Directories & files removed with 'make mrproper'
MRPROPER_FILES += include/config include/generated \
KBUILD_BUILTIN :=
KBUILD_MODULES := 1
-build-dirs := $(KBUILD_EXTMOD)
-$(MODORDER): descend
- @:
+build-dir := $(KBUILD_EXTMOD)
compile_commands.json: $(extmod_prefix)compile_commands.json
PHONY += compile_commands.json
@echo ' clean - remove generated files in module directory only'
@echo ''
-# no-op for external module builds
-PHONY += modules_prepare
-
endif # KBUILD_EXTMOD
# ---------------------------------------------------------------------------
# Modules
-PHONY += modules modules_install
+PHONY += modules modules_install modules_prepare
ifdef CONFIG_MODULES
-modules: modules_check
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+$(MODORDER): $(build-dir)
+ @:
+
+# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
+# This is solely useful to speed up test compiles.
+modules: modpost
+ifneq ($(KBUILD_MODPOST_NOFINAL),1)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
+endif
PHONY += modules_check
modules_check: $(MODORDER)
@echo >&2 '***'
@exit 1
+KBUILD_MODULES :=
+
endif # CONFIG_MODULES
+PHONY += modpost
+modpost: $(if $(single-build),, $(if $(KBUILD_BUILTIN), vmlinux.o)) \
+ $(if $(KBUILD_MODULES), modules_check)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+
# Single targets
# ---------------------------------------------------------------------------
# To build individual files in subdirectories, you can do like this:
single-no-ko := $(filter-out $(single-ko), $(MAKECMDGOALS)) \
$(foreach x, o mod, $(patsubst %.ko, %.$x, $(single-ko)))
-$(single-ko): single_modpost
+$(single-ko): single_modules
@:
-$(single-no-ko): descend
+$(single-no-ko): $(build-dir)
@:
-ifeq ($(KBUILD_EXTMOD),)
-# For the single build of in-tree modules, use a temporary file to avoid
-# the situation of modules_install installing an invalid modules.order.
-MODORDER := .modules.tmp
-endif
-
-PHONY += single_modpost
-single_modpost: $(single-no-ko) modules_prepare
+# Remove MODORDER when done because it is not the real one.
+PHONY += single_modules
+single_modules: $(single-no-ko) modules_prepare
$(Q){ $(foreach m, $(single-ko), echo $(extmod_prefix)$m;) } > $(MODORDER)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
+ifneq ($(KBUILD_MODPOST_NOFINAL),1)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
+endif
+ $(Q)rm -f $(MODORDER)
-KBUILD_MODULES := 1
-
-export KBUILD_SINGLE_TARGETS := $(addprefix $(extmod_prefix), $(single-no-ko))
-
-# trim unrelated directories
-build-dirs := $(foreach d, $(build-dirs), \
- $(if $(filter $(d)/%, $(KBUILD_SINGLE_TARGETS)), $(d)))
+single-goals := $(addprefix $(build-dir)/, $(single-no-ko))
-endif
+KBUILD_MODULES := 1
-ifndef CONFIG_MODULES
-KBUILD_MODULES :=
endif
-# Handle descending into subdirectories listed in $(build-dirs)
# Preset locale variables to speed up the build process. Limit locale
# tweaks to this spot to avoid wrong language settings when running
# make menuconfig etc.
# Error messages still appears in the original language
-PHONY += descend $(build-dirs)
-descend: $(build-dirs)
-$(build-dirs): prepare
- $(Q)$(MAKE) $(build)=$@ \
- single-build=$(if $(filter-out $@/, $(filter $@/%, $(KBUILD_SINGLE_TARGETS))),1) \
- need-builtin=1 need-modorder=1
+PHONY += $(build-dir)
+$(build-dir): prepare
+ $(Q)$(MAKE) $(build)=$@ need-builtin=1 need-modorder=1 $(single-goals)
clean-dirs := $(addprefix _clean_, $(clean-dirs))
PHONY += $(clean-dirs) clean
cmd_gen_compile_commands = $(PYTHON3) $< -a $(AR) -o $@ $(filter-out $<, $(real-prereqs))
$(extmod_prefix)compile_commands.json: scripts/clang-tools/gen_compile_commands.py \
- $(if $(KBUILD_EXTMOD),,$(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)) \
+ $(if $(KBUILD_EXTMOD),, vmlinux.a $(KBUILD_VMLINUX_LIBS)) \
$(if $(CONFIG_MODULES), $(MODORDER)) FORCE
$(call if_changed,gen_compile_commands)
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