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Kbuild updates for v5.16

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- Remove the global -isystem compiler flag, which was made possible by
    the introduction of <linux/stdarg.h>
 
  - Improve the Kconfig help to print the location in the top menu level
 
  - Fix "FORCE prerequisite is missing" build warning for sparc
 
  - Add new build targets, tarzst-pkg and perf-tarzst-src-pkg, which generate
    a zstd-compressed tarball
 
  - Prevent gen_init_cpio tool from generating a corrupted cpio when
    KBUILD_BUILD_TIMESTAMP is set to 2106-02-07 or later
 
  - Misc cleanups
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Merge tag 'kbuild-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Remove the global -isystem compiler flag, which was made possible by
   the introduction of <linux/stdarg.h>

 - Improve the Kconfig help to print the location in the top menu level

 - Fix "FORCE prerequisite is missing" build warning for sparc

 - Add new build targets, tarzst-pkg and perf-tarzst-src-pkg, which
   generate a zstd-compressed tarball

 - Prevent gen_init_cpio tool from generating a corrupted cpio when
   KBUILD_BUILD_TIMESTAMP is set to 2106-02-07 or later

 - Misc cleanups

* tag 'kbuild-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (28 commits)
  kbuild: use more subdir- for visiting subdirectories while cleaning
  sh: remove meaningless archclean line
  initramfs: Check timestamp to prevent broken cpio archive
  kbuild: split DEBUG_CFLAGS out to scripts/Makefile.debug
  gen_init_cpio: add static const qualifiers
  kbuild: Add make tarzst-pkg build option
  scripts: update the comments of kallsyms support
  sparc: Add missing "FORCE" target when using if_changed
  kconfig: refactor conf_touch_dep()
  kconfig: refactor conf_write_dep()
  kconfig: refactor conf_write_autoconf()
  kconfig: add conf_get_autoheader_name()
  kconfig: move sym_escape_string_value() to confdata.c
  kconfig: refactor listnewconfig code
  kconfig: refactor conf_write_symbol()
  kconfig: refactor conf_write_heading()
  kconfig: remove 'const' from the return type of sym_escape_string_value()
  kconfig: rename a variable in the lexer to a clearer name
  kconfig: narrow the scope of variables in the lexer
  kconfig: Create links to main menu items in search
  ...
This commit is contained in:
Linus Torvalds 2021-11-08 09:15:45 -08:00
parent 67b7e1f241 8212f8986d
commit 1e9ed9360f
62 changed files with 470 additions and 496 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
Documentation/kbuild/makefiles.rst
View file

@ -1050,22 +1050,9 @@ is not sufficient this sometimes needs to be explicit.
The above assignment instructs kbuild to descend down in the
directory compressed/ when "make clean" is executed.
To support the clean infrastructure in the Makefiles that build the
final bootimage there is an optional target named archclean:
Example::
#arch/x86/Makefile
archclean:
$(Q)$(MAKE) $(clean)=arch/x86/boot
When "make clean" is executed, make will descend down in arch/x86/boot,
and clean as usual. The Makefile located in arch/x86/boot/ may use
the subdir- trick to descend further down.
Note 1: arch/$(SRCARCH)/Makefile cannot use "subdir-", because that file is
included in the top level makefile, and the kbuild infrastructure
is not operational at that point.
included in the top level makefile. Instead, arch/$(SRCARCH)/Kbuild can use
"subdir-".
Note 2: All directories listed in core-y, libs-y, drivers-y and net-y will
be visited during "make clean".

41
Makefile
View file

@ -850,44 +850,6 @@ ifdef CONFIG_ZERO_CALL_USED_REGS
KBUILD_CFLAGS += -fzero-call-used-regs=used-gpr
endif
DEBUG_CFLAGS :=
ifdef CONFIG_DEBUG_INFO
ifdef CONFIG_DEBUG_INFO_SPLIT
DEBUG_CFLAGS += -gsplit-dwarf
else
DEBUG_CFLAGS += -g
endif
ifndef CONFIG_AS_IS_LLVM
KBUILD_AFLAGS += -Wa,-gdwarf-2
endif
ifndef CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT
dwarf-version-$(CONFIG_DEBUG_INFO_DWARF4) := 4
dwarf-version-$(CONFIG_DEBUG_INFO_DWARF5) := 5
DEBUG_CFLAGS += -gdwarf-$(dwarf-version-y)
endif
ifdef CONFIG_DEBUG_INFO_REDUCED
DEBUG_CFLAGS += -fno-var-tracking
ifdef CONFIG_CC_IS_GCC
DEBUG_CFLAGS += -femit-struct-debug-baseonly
endif
endif
ifdef CONFIG_DEBUG_INFO_COMPRESSED
DEBUG_CFLAGS += -gz=zlib
KBUILD_AFLAGS += -gz=zlib
KBUILD_LDFLAGS += --compress-debug-sections=zlib
endif
endif # CONFIG_DEBUG_INFO
KBUILD_CFLAGS += $(DEBUG_CFLAGS)
export DEBUG_CFLAGS
ifdef CONFIG_FUNCTION_TRACER
ifdef CONFIG_FTRACE_MCOUNT_USE_CC
CC_FLAGS_FTRACE += -mrecord-mcount
@ -984,7 +946,7 @@ KBUILD_CFLAGS += -falign-functions=64
endif
# arch Makefile may override CC so keep this after arch Makefile is included
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
NOSTDINC_FLAGS += -nostdinc
# warn about C99 declaration after statement
KBUILD_CFLAGS += -Wdeclaration-after-statement
@ -1051,6 +1013,7 @@ KBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
# include additional Makefiles when needed
include-y := scripts/Makefile.extrawarn
include-$(CONFIG_DEBUG_INFO) += scripts/Makefile.debug
include-$(CONFIG_KASAN) += scripts/Makefile.kasan
include-$(CONFIG_KCSAN) += scripts/Makefile.kcsan
include-$(CONFIG_UBSAN) += scripts/Makefile.ubsan

3
arch/alpha/Kbuild
View file

@ -1,3 +1,6 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-y += kernel/ mm/
obj-$(CONFIG_MATHEMU) += math-emu/
# for cleaning
subdir- += boot

3
arch/alpha/Makefile
View file

@ -55,9 +55,6 @@ $(boot)/vmlinux.gz: vmlinux
bootimage bootpfile bootpzfile: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
archheaders:
$(Q)$(MAKE) $(build)=arch/alpha/kernel/syscalls all

3
arch/arc/Kbuild
View file

@ -1,3 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
obj-y += kernel/
obj-y += mm/
# for cleaning
subdir- += boot

3
arch/arc/Makefile
View file

@ -112,6 +112,3 @@ uImage: $(uimage-default-y)
@$(kecho) ' Image $(boot)/uImage is ready'
CLEAN_FILES += $(boot)/uImage
archclean:
$(Q)$(MAKE) $(clean)=$(boot)

3
arch/arm/Kbuild
View file

@ -9,3 +9,6 @@ obj-y += kernel/ mm/ common/
obj-y += probes/
obj-y += net/
obj-y += crypto/
# for cleaning
subdir- += boot

4
arch/arm/Makefile
View file

@ -318,10 +318,6 @@ ifeq ($(CONFIG_VDSO),y)
$(Q)$(MAKE) $(build)=arch/arm/vdso $@
endif
# We use MRPROPER_FILES and CLEAN_FILES now
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
# My testing targets (bypasses dependencies)
bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage

3
arch/arm64/Kbuild
View file

@ -4,3 +4,6 @@ obj-$(CONFIG_KVM) += kvm/
obj-$(CONFIG_XEN) += xen/
obj-$(subst m,y,$(CONFIG_HYPERV)) += hyperv/
obj-$(CONFIG_CRYPTO) += crypto/
# for cleaning
subdir- += boot

7
arch/arm64/Makefile
View file

@ -182,13 +182,6 @@ ifeq ($(CONFIG_ARM64_USE_LSE_ATOMICS),y)
endif
endif
# We use MRPROPER_FILES and CLEAN_FILES now
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
$(Q)$(MAKE) $(clean)=arch/arm64/kernel/vdso
$(Q)$(MAKE) $(clean)=arch/arm64/kernel/vdso32
ifeq ($(KBUILD_EXTMOD),)
# We need to generate vdso-offsets.h before compiling certain files in kernel/.
# In order to do that, we should use the archprepare target, but we can't since

3
arch/arm64/kernel/Makefile
View file

@ -81,3 +81,6 @@ extra-y += $(head-y) vmlinux.lds
ifeq ($(CONFIG_DEBUG_EFI),y)
AFLAGS_head.o += -DVMLINUX_PATH="\"$(realpath $(objtree)/vmlinux)\""
endif
# for cleaning
subdir- += vdso vdso32

2
arch/arm64/lib/Makefile
View file

@ -9,6 +9,8 @@ ifeq ($(CONFIG_KERNEL_MODE_NEON), y)
obj-$(CONFIG_XOR_BLOCKS) += xor-neon.o
CFLAGS_REMOVE_xor-neon.o += -mgeneral-regs-only
CFLAGS_xor-neon.o += -ffreestanding
# Enable <arm_neon.h>
CFLAGS_xor-neon.o += -isystem $(shell $(CC) -print-file-name=include)
endif
lib-$(CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE) += uaccess_flushcache.o

3
arch/csky/Kbuild
View file

@ -1 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
# for cleaning
subdir- += boot

3
arch/csky/Makefile
View file

@ -76,9 +76,6 @@ all: zImage
zImage Image uImage: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
define archhelp
echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'

3
arch/h8300/Kbuild
View file

@ -1,2 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-y += kernel/ mm/ boot/dts/
# for cleaning
subdir- += boot

3
arch/h8300/Makefile
View file

@ -34,9 +34,6 @@ libs-y += arch/$(ARCH)/lib/
boot := arch/h8300/boot
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
vmlinux.srec vmlinux.bin zImage uImage.bin: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

2
arch/ia64/Makefile
View file

@ -67,8 +67,6 @@ vmlinux.bin: vmlinux FORCE
unwcheck: vmlinux
-$(Q)READELF=$(READELF) $(PYTHON3) $(srctree)/arch/ia64/scripts/unwcheck.py $<
archclean:
archheaders:
$(Q)$(MAKE) $(build)=arch/ia64/kernel/syscalls all

4
arch/m68k/Makefile
View file

@ -2,9 +2,7 @@
# m68k/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive

3
arch/microblaze/Kbuild
View file

@ -3,3 +3,6 @@ obj-y += kernel/
obj-y += mm/
obj-$(CONFIG_PCI) += pci/
obj-y += boot/dts/
# for cleaning
subdir- += boot

3
arch/microblaze/Makefile
View file

@ -60,9 +60,6 @@ export DTB
all: linux.bin
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
archheaders:
$(Q)$(MAKE) $(build)=arch/microblaze/kernel/syscalls all

3
arch/mips/Kbuild
View file

@ -25,3 +25,6 @@ obj-y += vdso/
ifdef CONFIG_KVM
obj-y += kvm/
endif
# for cleaning
subdir- += boot

8
arch/mips/Makefile
View file

@ -8,8 +8,7 @@
# Copyright (C) 2002, 2003, 2004 Maciej W. Rozycki
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" cleaning up for this architecture.
# architecture-specific flags and dependencies.
#
archscripts: scripts_basic
@ -426,11 +425,6 @@ endif
$(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
$(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
archclean:
$(Q)$(MAKE) $(clean)=arch/mips/boot
$(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
$(Q)$(MAKE) $(clean)=arch/mips/boot/tools
archheaders:
$(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all

3
arch/mips/boot/Makefile
View file

@ -171,3 +171,6 @@ $(obj)/vmlinux.itb: $(obj)/vmlinux.its $(obj)/vmlinux.bin FORCE
$(obj)/vmlinux.%.itb: $(obj)/vmlinux.%.its $(obj)/vmlinux.bin.% FORCE
$(call if_changed,itb-image,$<)
# for cleaning
subdir- += compressed tools

3
arch/nds32/Kbuild
View file

@ -1 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
# for cleaning
subdir- += boot

5
arch/nds32/Makefile
View file

@ -9,6 +9,8 @@ endif
# Avoid generating FPU instructions
arch-y += -mno-ext-fpu-sp -mno-ext-fpu-dp -mfloat-abi=soft
# Enable <nds32_intrinsic.h>
KBUILD_CFLAGS += -isystem $(shell $(CC) -print-file-name=include)
KBUILD_CFLAGS += $(call cc-option, -mno-sched-prolog-epilog)
KBUILD_CFLAGS += -mcmodel=large
@ -62,9 +64,6 @@ prepare: vdso_prepare
vdso_prepare: prepare0
$(Q)$(MAKE) $(build)=arch/nds32/kernel/vdso include/generated/vdso-offsets.h
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
define archhelp
echo ' Image - kernel image (arch/$(ARCH)/boot/Image)'
endef

3
arch/nios2/Kbuild
View file

@ -1 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
# for cleaning
subdir- += boot

9
arch/nios2/Makefile
View file

@ -8,8 +8,7 @@
# Written by Fredrik Markstrom
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" cleaning up for this architecture.
# architecture-specific flags and dependencies.
#
# Nios2 port by Wind River Systems Inc trough:
# fredrik.markstrom@gmail.com and ivarholmqvist@gmail.com
@ -53,14 +52,12 @@ core-y += $(nios2-boot)/dts/
all: vmImage
archclean:
$(Q)$(MAKE) $(clean)=$(nios2-boot)
$(BOOT_TARGETS): vmlinux
$(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
install:
$(Q)$(MAKE) $(build)=$(nios2-boot) BOOTIMAGE=$(KBUILD_IMAGE) install
sh $(srctree)/$(nios2-boot)/install.sh $(KERNELRELEASE) \
$(KBUILD_IMAGE) System.map "$(INSTALL_PATH)"
define archhelp
echo '* vmImage - Kernel-only image for U-Boot ($(KBUILD_IMAGE))'

3
arch/nios2/boot/Makefile
View file

@ -30,6 +30,3 @@ $(obj)/zImage: $(obj)/compressed/vmlinux FORCE
$(obj)/compressed/vmlinux: $(obj)/vmlinux.gz FORCE
$(Q)$(MAKE) $(build)=$(obj)/compressed $@
install:
sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"

3
arch/openrisc/Kbuild
View file

@ -1,3 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
obj-y += lib/ kernel/ mm/
obj-y += boot/dts/
# for cleaning
subdir- += boot

7
arch/openrisc/Makefile
View file

@ -1,9 +1,7 @@
# BK Id: %F% %I% %G% %U% %#%
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
@ -48,6 +46,3 @@ PHONY += vmlinux.bin
vmlinux.bin: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
archclean:
$(Q)$(MAKE) $(clean)=$(boot)

3
arch/parisc/Kbuild
View file

@ -1,2 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-y += mm/ kernel/ math-emu/
# for cleaning
subdir- += boot

7
arch/parisc/Makefile
View file

@ -2,9 +2,7 @@
# parisc/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
@ -181,8 +179,5 @@ define archhelp
@echo ' zinstall - Install compressed vmlinuz kernel'
endef
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
archheaders:
$(Q)$(MAKE) $(build)=arch/parisc/kernel/syscalls all

3
arch/powerpc/Kbuild
View file

@ -16,3 +16,6 @@ obj-$(CONFIG_KVM) += kvm/
obj-$(CONFIG_PERF_EVENTS) += perf/
obj-$(CONFIG_KEXEC_CORE) += kexec/
obj-$(CONFIG_KEXEC_FILE) += purgatory/
# for cleaning
subdir- += boot

7
arch/powerpc/Makefile
View file

@ -1,7 +1,5 @@
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture.
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
@ -411,9 +409,6 @@ install:
sh -x $(srctree)/$(boot)/install.sh "$(KERNELRELEASE)" vmlinux \
System.map "$(INSTALL_PATH)"
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
ifeq ($(KBUILD_EXTMOD),)
# We need to generate vdso-offsets.h before compiling certain files in kernel/.
# In order to do that, we should use the archprepare target, but we can't since

2
arch/powerpc/lib/Makefile
View file

@ -65,5 +65,7 @@ obj-$(CONFIG_FTR_FIXUP_SELFTEST) += feature-fixups-test.o
obj-$(CONFIG_ALTIVEC) += xor_vmx.o xor_vmx_glue.o
CFLAGS_xor_vmx.o += -maltivec $(call cc-option,-mabi=altivec)
# Enable <altivec.h>
CFLAGS_xor_vmx.o += -isystem $(shell $(CC) -print-file-name=include)
obj-$(CONFIG_PPC64) += $(obj64-y)

3
arch/riscv/Kbuild
View file

@ -2,3 +2,6 @@
obj-y += kernel/ mm/ net/
obj-$(CONFIG_BUILTIN_DTB) += boot/dts/
# for cleaning
subdir- += boot

7
arch/riscv/Makefile
View file

@ -1,7 +1,5 @@
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
# architecture-specific flags and dependencies.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
@ -138,6 +136,3 @@ zinstall: install-image = Image.gz
install zinstall:
$(CONFIG_SHELL) $(srctree)/$(boot)/install.sh $(KERNELRELEASE) \
$(boot)/$(install-image) System.map "$(INSTALL_PATH)"
archclean:
$(Q)$(MAKE) $(clean)=$(boot)

3
arch/s390/Kbuild
View file

@ -8,3 +8,6 @@ obj-$(CONFIG_APPLDATA_BASE) += appldata/
obj-y += net/
obj-$(CONFIG_PCI) += pci/
obj-$(CONFIG_ARCH_HAS_KEXEC_PURGATORY) += purgatory/
# for cleaning
subdir- += boot tools

8
arch/s390/Makefile
View file

@ -3,9 +3,7 @@
# s390/Makefile
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
# architecture-specific flags and dependencies.
#
# Copyright (C) 1994 by Linus Torvalds
#
@ -147,10 +145,6 @@ zfcpdump:
vdso_install:
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
$(Q)$(MAKE) $(clean)=$(tools)
archheaders:
$(Q)$(MAKE) $(build)=$(syscalls) uapi

3
arch/sh/Kbuild
View file

@ -2,3 +2,6 @@
obj-y += kernel/ mm/ boards/
obj-$(CONFIG_SH_FPU_EMU) += math-emu/
obj-$(CONFIG_USE_BUILTIN_DTB) += boot/dts/
# for cleaning
subdir- += boot

4
arch/sh/Makefile
View file

@ -198,10 +198,6 @@ compressed: zImage
archprepare:
$(Q)$(MAKE) $(build)=arch/sh/tools include/generated/machtypes.h
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
$(Q)$(MAKE) $(clean)=arch/sh/kernel/vsyscall
archheaders:
$(Q)$(MAKE) $(build)=arch/sh/kernel/syscalls all

3
arch/sparc/Kbuild
View file

@ -9,3 +9,6 @@ obj-y += math-emu/
obj-y += net/
obj-y += crypto/
obj-$(CONFIG_SPARC64) += vdso/
# for cleaning
subdir- += boot

3
arch/sparc/Makefile
View file

@ -75,9 +75,6 @@ install:
sh $(srctree)/$(boot)/install.sh $(KERNELRELEASE) $(KBUILD_IMAGE) \
System.map "$(INSTALL_PATH)"
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
archheaders:
$(Q)$(MAKE) $(build)=arch/sparc/kernel/syscalls all

8
arch/sparc/boot/Makefile
View file

@ -22,7 +22,7 @@ ifeq ($(CONFIG_SPARC64),y)
# Actual linking
$(obj)/zImage: $(obj)/image
$(obj)/zImage: $(obj)/image FORCE
$(call if_changed,gzip)
@echo ' kernel: $@ is ready'
@ -31,7 +31,7 @@ $(obj)/vmlinux.aout: vmlinux FORCE
@echo ' kernel: $@ is ready'
else
$(obj)/zImage: $(obj)/image
$(obj)/zImage: $(obj)/image FORCE
$(call if_changed,strip)
@echo ' kernel: $@ is ready'
@ -44,7 +44,7 @@ OBJCOPYFLAGS_image.bin := -S -O binary -R .note -R .comment
$(obj)/image.bin: $(obj)/image FORCE
$(call if_changed,objcopy)
$(obj)/image.gz: $(obj)/image.bin
$(obj)/image.gz: $(obj)/image.bin FORCE
$(call if_changed,gzip)
UIMAGE_LOADADDR = $(CONFIG_UBOOT_LOAD_ADDR)
@ -56,7 +56,7 @@ quiet_cmd_uimage.o = UIMAGE.O $@
-r -b binary $@ -o $@.o
targets += uImage
$(obj)/uImage: $(obj)/image.gz
$(obj)/uImage: $(obj)/image.gz FORCE
$(call if_changed,uimage)
$(call if_changed,uimage.o)
@echo ' Image $@ is ready'

3
arch/x86/Kbuild
View file

@ -25,3 +25,6 @@ obj-y += platform/
obj-y += net/
obj-$(CONFIG_KEXEC_FILE) += purgatory/
# for cleaning
subdir- += boot tools

2
arch/x86/Makefile
View file

@ -283,8 +283,6 @@ endif
archclean:
$(Q)rm -rf $(objtree)/arch/i386
$(Q)rm -rf $(objtree)/arch/x86_64
$(Q)$(MAKE) $(clean)=$(boot)
$(Q)$(MAKE) $(clean)=arch/x86/tools
define archhelp
echo '* bzImage - Compressed kernel image (arch/x86/boot/bzImage)'

4
arch/xtensa/Makefile
View file

@ -7,9 +7,7 @@
# Copyright (C) 2014 Cadence Design Systems Inc.
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
# architecture-specific flags and dependencies.
# Core configuration.
# (Use VAR=<xtensa_config> to use another default compiler.)

2
crypto/Makefile
View file

@ -119,6 +119,8 @@ CFLAGS_aegis128-neon-inner.o += $(aegis128-cflags-y)
CFLAGS_REMOVE_aegis128-neon-inner.o += -mgeneral-regs-only
aegis128-$(CONFIG_CRYPTO_AEGIS128_SIMD) += aegis128-neon.o aegis128-neon-inner.o
endif
# Enable <arm_neon.h>
CFLAGS_aegis128-neon-inner.o += -isystem $(shell $(CC) -print-file-name=include)
obj-$(CONFIG_CRYPTO_PCRYPT) += pcrypt.o
obj-$(CONFIG_CRYPTO_CRYPTD) += cryptd.o

4
lib/raid6/Makefile
View file

@ -14,6 +14,8 @@ hostprogs += mktables
ifeq ($(CONFIG_ALTIVEC),y)
altivec_flags := -maltivec $(call cc-option,-mabi=altivec)
# Enable <altivec.h>
altivec_flags += -isystem $(shell $(CC) -print-file-name=include)
ifdef CONFIG_CC_IS_CLANG
# clang ppc port does not yet support -maltivec when -msoft-float is
@ -34,6 +36,8 @@ endif
# ARM/NEON intrinsics in a non C99-compliant environment (such as the kernel)
ifeq ($(CONFIG_KERNEL_MODE_NEON),y)
NEON_FLAGS := -ffreestanding
# Enable <arm_neon.h>
NEON_FLAGS += -isystem $(shell $(CC) -print-file-name=include)
ifeq ($(ARCH),arm)
NEON_FLAGS += -march=armv7-a -mfloat-abi=softfp -mfpu=neon
endif

61
scripts/Makefile.build
View file

@ -155,7 +155,7 @@ $(obj)/%.ll: $(src)/%.c FORCE
# (See cmd_cc_o_c + relevant part of rule_cc_o_c)
quiet_cmd_cc_o_c = CC $(quiet_modtag) $@
cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< $(cmd_objtool)
ifdef CONFIG_MODVERSIONS
# When module versioning is enabled the following steps are executed:
@ -224,27 +224,38 @@ cmd_record_mcount = $(if $(findstring $(strip $(CC_FLAGS_FTRACE)),$(_c_flags)),
endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
ifdef CONFIG_STACK_VALIDATION
ifndef CONFIG_LTO_CLANG
__objtool_obj := $(objtree)/tools/objtool/objtool
objtool := $(objtree)/tools/objtool/objtool
objtool_args = \
$(if $(CONFIG_UNWINDER_ORC),orc generate,check) \
$(if $(part-of-module), --module) \
$(if $(CONFIG_FRAME_POINTER),, --no-fp) \
$(if $(CONFIG_GCOV_KERNEL)$(CONFIG_LTO_CLANG), --no-unreachable)\
$(if $(CONFIG_RETPOLINE), --retpoline) \
$(if $(CONFIG_X86_SMAP), --uaccess) \
$(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount)
cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool_args) $@)
cmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd)
endif # CONFIG_STACK_VALIDATION
ifdef CONFIG_LTO_CLANG
# Skip objtool for LLVM bitcode
$(obj)/%.o: objtool-enabled :=
else
# 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory
# 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file
# 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file
cmd_objtool = $(if $(patsubst y%,, \
$(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
$(__objtool_obj) $(objtool_args) $@)
objtool_obj = $(if $(patsubst y%,, \
$(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n), \
$(__objtool_obj))
endif # CONFIG_LTO_CLANG
endif # CONFIG_STACK_VALIDATION
$(obj)/%.o: objtool-enabled = $(if $(filter-out y%, \
$(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n),y)
# Rebuild all objects when objtool changes, or is enabled/disabled.
objtool_dep = $(objtool_obj) \
$(wildcard include/config/ORC_UNWINDER \
include/config/STACK_VALIDATION)
endif
ifdef CONFIG_TRIM_UNUSED_KSYMS
cmd_gen_ksymdeps = \
@ -259,7 +270,7 @@ define rule_cc_o_c
$(call cmd,gen_ksymdeps)
$(call cmd,checksrc)
$(call cmd,checkdoc)
$(call cmd,objtool)
$(call cmd,gen_objtooldep)
$(call cmd,modversions_c)
$(call cmd,record_mcount)
endef
@ -267,13 +278,12 @@ endef
define rule_as_o_S
$(call cmd_and_fixdep,as_o_S)
$(call cmd,gen_ksymdeps)
$(call cmd,objtool)
$(call cmd,gen_objtooldep)
$(call cmd,modversions_S)
endef
# Built-in and composite module parts
.SECONDEXPANSION:
$(obj)/%.o: $(src)/%.c $(recordmcount_source) $$(objtool_dep) FORCE
$(obj)/%.o: $(src)/%.c $(recordmcount_source) FORCE
$(call if_changed_rule,cc_o_c)
$(call cmd,force_checksrc)
@ -285,14 +295,13 @@ cmd_cc_lto_link_modules = \
$(LD) $(ld_flags) -r -o $@ \
$(shell [ -s $(@:.lto.o=.o.symversions) ] && \
echo -T $(@:.lto.o=.o.symversions)) \
--whole-archive $(filter-out FORCE,$^)
--whole-archive $(filter-out FORCE,$^) \
$(cmd_objtool)
ifdef CONFIG_STACK_VALIDATION
# objtool was skipped for LLVM bitcode, run it now that we have compiled
# modules into native code
cmd_cc_lto_link_modules += ; \
$(objtree)/tools/objtool/objtool $(objtool_args) --module $@
endif
$(obj)/%.lto.o: objtool-enabled = y
$(obj)/%.lto.o: part-of-module := y
$(obj)/%.lto.o: $(obj)/%.o FORCE
$(call if_changed,cc_lto_link_modules)
@ -356,7 +365,7 @@ $(obj)/%.s: $(src)/%.S FORCE
$(call if_changed_dep,cpp_s_S)
quiet_cmd_as_o_S = AS $(quiet_modtag) $@
cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< $(cmd_objtool)
ifdef CONFIG_ASM_MODVERSIONS
@ -375,7 +384,7 @@ cmd_modversions_S = \
fi
endif
$(obj)/%.o: $(src)/%.S $$(objtool_dep) FORCE
$(obj)/%.o: $(src)/%.S FORCE
$(call if_changed_rule,as_o_S)
targets += $(filter-out $(subdir-builtin), $(real-obj-y))

33
scripts/Makefile.debug Normal file
View file

@ -0,0 +1,33 @@
DEBUG_CFLAGS :=
ifdef CONFIG_DEBUG_INFO_SPLIT
DEBUG_CFLAGS += -gsplit-dwarf
else
DEBUG_CFLAGS += -g
endif
ifndef CONFIG_AS_IS_LLVM
KBUILD_AFLAGS += -Wa,-gdwarf-2
endif
ifndef CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT
dwarf-version-$(CONFIG_DEBUG_INFO_DWARF4) := 4
dwarf-version-$(CONFIG_DEBUG_INFO_DWARF5) := 5
DEBUG_CFLAGS += -gdwarf-$(dwarf-version-y)
endif
ifdef CONFIG_DEBUG_INFO_REDUCED
DEBUG_CFLAGS += -fno-var-tracking
ifdef CONFIG_CC_IS_GCC
DEBUG_CFLAGS += -femit-struct-debug-baseonly
endif
endif
ifdef CONFIG_DEBUG_INFO_COMPRESSED
DEBUG_CFLAGS += -gz=zlib
KBUILD_AFLAGS += -gz=zlib
KBUILD_LDFLAGS += --compress-debug-sections=zlib
endif
KBUILD_CFLAGS += $(DEBUG_CFLAGS)
export DEBUG_CFLAGS

11
scripts/Makefile.lib
View file

@ -232,17 +232,6 @@ ifeq ($(CONFIG_LTO_CLANG),y)
mod-prelink-ext := .lto
endif
# Objtool arguments are also needed for modfinal with LTO, so we define
# then here to avoid duplication.
objtool_args = \
$(if $(CONFIG_UNWINDER_ORC),orc generate,check) \
$(if $(part-of-module), --module) \
$(if $(CONFIG_FRAME_POINTER),, --no-fp) \
$(if $(CONFIG_GCOV_KERNEL)$(CONFIG_LTO_CLANG), --no-unreachable)\
$(if $(CONFIG_RETPOLINE), --retpoline) \
$(if $(CONFIG_X86_SMAP), --uaccess) \
$(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount)
# Useful for describing the dependency of composite objects
# Usage:
# $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)

10
scripts/Makefile.package
View file

@ -103,7 +103,7 @@ snap-pkg:
# tarball targets
# ---------------------------------------------------------------------------
tar-pkgs := dir-pkg tar-pkg targz-pkg tarbz2-pkg tarxz-pkg
tar-pkgs := dir-pkg tar-pkg targz-pkg tarbz2-pkg tarxz-pkg tarzst-pkg
PHONY += $(tar-pkgs)
$(tar-pkgs):
$(MAKE) -f $(srctree)/Makefile
@ -130,10 +130,12 @@ $(if $(findstring tar-src,$@),, \
$(if $(findstring bz2,$@),$(KBZIP2), \
$(if $(findstring gz,$@),$(KGZIP), \
$(if $(findstring xz,$@),$(XZ), \
$(error unknown target $@)))) \
$(if $(findstring zst,$@),$(ZSTD), \
$(error unknown target $@))))) \
-f -9 $(perf-tar).tar)
perf-tar-pkgs := perf-tar-src-pkg perf-targz-src-pkg perf-tarbz2-src-pkg perf-tarxz-src-pkg
perf-tar-pkgs := perf-tar-src-pkg perf-targz-src-pkg perf-tarbz2-src-pkg \
perf-tarxz-src-pkg perf-tarzst-src-pkg
PHONY += $(perf-tar-pkgs)
$(perf-tar-pkgs):
$(call cmd,perf_tar)
@ -153,9 +155,11 @@ help:
@echo ' targz-pkg - Build the kernel as a gzip compressed tarball'
@echo ' tarbz2-pkg - Build the kernel as a bzip2 compressed tarball'
@echo ' tarxz-pkg - Build the kernel as a xz compressed tarball'
@echo ' tarzst-pkg - Build the kernel as a zstd compressed tarball'
@echo ' perf-tar-src-pkg - Build $(perf-tar).tar source tarball'
@echo ' perf-targz-src-pkg - Build $(perf-tar).tar.gz source tarball'
@echo ' perf-tarbz2-src-pkg - Build $(perf-tar).tar.bz2 source tarball'
@echo ' perf-tarxz-src-pkg - Build $(perf-tar).tar.xz source tarball'
@echo ' perf-tarzst-src-pkg - Build $(perf-tar).tar.zst source tarball'
.PHONY: $(PHONY)

15
scripts/kconfig/conf.c
View file

@ -646,19 +646,8 @@ static void check_conf(struct menu *menu)
switch (input_mode) {
case listnewconfig:
if (sym->name) {
const char *str;
if (sym->type == S_STRING) {
str = sym_get_string_value(sym);
str = sym_escape_string_value(str);
printf("%s%s=%s\n", CONFIG_, sym->name, str);
free((void *)str);
} else {
str = sym_get_string_value(sym);
printf("%s%s=%s\n", CONFIG_, sym->name, str);
}
}
if (sym->name)
print_symbol_for_listconfig(sym);
break;
case helpnewconfig:
printf("-----\n");

477
scripts/kconfig/confdata.c
View file

@ -11,6 +11,7 @@
#include <fcntl.h>
#include <limits.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -129,41 +130,22 @@ static size_t depfile_prefix_len;
/* touch depfile for symbol 'name' */
static int conf_touch_dep(const char *name)
{
int fd, ret;
char *d;
int fd;
/* check overflow: prefix + name + '\0' must fit in buffer. */
if (depfile_prefix_len + strlen(name) + 1 > sizeof(depfile_path))
return -1;
d = depfile_path + depfile_prefix_len;
strcpy(d, name);
strcpy(depfile_path + depfile_prefix_len, name);
/* Assume directory path already exists. */
fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1) {
if (errno != ENOENT)
return -1;
ret = make_parent_dir(depfile_path);
if (ret)
return ret;
/* Try it again. */
fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1)
return -1;
}
if (fd == -1)
return -1;
close(fd);
return 0;
}
struct conf_printer {
void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
void (*print_comment)(FILE *, const char *, void *);
};
static void conf_warning(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
@ -227,6 +209,13 @@ static const char *conf_get_autoconfig_name(void)
return name ? name : "include/config/auto.conf";
}
static const char *conf_get_autoheader_name(void)
{
char *name = getenv("KCONFIG_AUTOHEADER");
return name ? name : "include/generated/autoconf.h";
}
static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
{
char *p2;
@ -594,169 +583,171 @@ int conf_read(const char *name)
return 0;
}
struct comment_style {
const char *decoration;
const char *prefix;
const char *postfix;
};
static const struct comment_style comment_style_pound = {
.decoration = "#",
.prefix = "#",
.postfix = "#",
};
static const struct comment_style comment_style_c = {
.decoration = " *",
.prefix = "/*",
.postfix = " */",
};
static void conf_write_heading(FILE *fp, const struct comment_style *cs)
{
fprintf(fp, "%s\n", cs->prefix);
fprintf(fp, "%s Automatically generated file; DO NOT EDIT.\n",
cs->decoration);
fprintf(fp, "%s %s\n", cs->decoration, rootmenu.prompt->text);
fprintf(fp, "%s\n", cs->postfix);
}
/* The returned pointer must be freed on the caller side */
static char *escape_string_value(const char *in)
{
const char *p;
char *out;
size_t len;
len = strlen(in) + strlen("\"\"") + 1;
p = in;
while (1) {
p += strcspn(p, "\"\\");
if (p[0] == '\0')
break;
len++;
p++;
}
out = xmalloc(len);
out[0] = '\0';
strcat(out, "\"");
p = in;
while (1) {
len = strcspn(p, "\"\\");
strncat(out, p, len);
p += len;
if (p[0] == '\0')
break;
strcat(out, "\\");
strncat(out, p++, 1);
}
strcat(out, "\"");
return out;
}
/*
* Kconfig configuration printer
*
* This printer is used when generating the resulting configuration after
* kconfig invocation and `defconfig' files. Unset symbol might be omitted by
* passing a non-NULL argument to the printer.
*
*/
static void
kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
enum output_n { OUTPUT_N, OUTPUT_N_AS_UNSET, OUTPUT_N_NONE };
static void __print_symbol(FILE *fp, struct symbol *sym, enum output_n output_n,
bool escape_string)
{
const char *val;
char *escaped = NULL;
if (sym->type == S_UNKNOWN)
return;
val = sym_get_string_value(sym);
if ((sym->type == S_BOOLEAN || sym->type == S_TRISTATE) &&
output_n != OUTPUT_N && *val == 'n') {
if (output_n == OUTPUT_N_AS_UNSET)
fprintf(fp, "# %s%s is not set\n", CONFIG_, sym->name);
return;
}
if (sym->type == S_STRING && escape_string) {
escaped = escape_string_value(val);
val = escaped;
}
fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, val);
free(escaped);
}
static void print_symbol_for_dotconfig(FILE *fp, struct symbol *sym)
{
__print_symbol(fp, sym, OUTPUT_N_AS_UNSET, true);
}
static void print_symbol_for_autoconf(FILE *fp, struct symbol *sym)
{
__print_symbol(fp, sym, OUTPUT_N_NONE, true);
}
void print_symbol_for_listconfig(struct symbol *sym)
{
__print_symbol(stdout, sym, OUTPUT_N, true);
}
static void print_symbol_for_c(FILE *fp, struct symbol *sym)
{
const char *val;
const char *sym_suffix = "";
const char *val_prefix = "";
char *escaped = NULL;
if (sym->type == S_UNKNOWN)
return;
val = sym_get_string_value(sym);
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
if (*value == 'n') {
bool skip_unset = (arg != NULL);
if (!skip_unset)
fprintf(fp, "# %s%s is not set\n",
CONFIG_, sym->name);
return;
}
break;
default:
break;
}
fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
}
static void
kconfig_print_comment(FILE *fp, const char *value, void *arg)
{
const char *p = value;
size_t l;
for (;;) {
l = strcspn(p, "\n");
fprintf(fp, "#");
if (l) {
fprintf(fp, " ");
xfwrite(p, l, 1, fp);
p += l;
}
fprintf(fp, "\n");
if (*p++ == '\0')
break;
}
}
static struct conf_printer kconfig_printer_cb =
{
.print_symbol = kconfig_print_symbol,
.print_comment = kconfig_print_comment,
};
/*
* Header printer
*
* This printer is used when generating the `include/generated/autoconf.h' file.
*/
static void
header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
{
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE: {
const char *suffix = "";
switch (*value) {
switch (*val) {
case 'n':
break;
return;
case 'm':
suffix = "_MODULE";
sym_suffix = "_MODULE";
/* fall through */
default:
fprintf(fp, "#define %s%s%s 1\n",
CONFIG_, sym->name, suffix);
val = "1";
}
break;
}
case S_HEX: {
const char *prefix = "";
if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
prefix = "0x";
fprintf(fp, "#define %s%s %s%s\n",
CONFIG_, sym->name, prefix, value);
case S_HEX:
if (val[0] != '0' || (val[1] != 'x' && val[1] != 'X'))
val_prefix = "0x";
break;
}
case S_STRING:
case S_INT:
fprintf(fp, "#define %s%s %s\n",
CONFIG_, sym->name, value);
break;
escaped = escape_string_value(val);
val = escaped;
default:
break;
}
}
fprintf(fp, "#define %s%s%s %s%s\n", CONFIG_, sym->name, sym_suffix,
val_prefix, val);
static void
header_print_comment(FILE *fp, const char *value, void *arg)
{
const char *p = value;
size_t l;
fprintf(fp, "/*\n");
for (;;) {
l = strcspn(p, "\n");
fprintf(fp, " *");
if (l) {
fprintf(fp, " ");
xfwrite(p, l, 1, fp);
p += l;
}
fprintf(fp, "\n");
if (*p++ == '\0')
break;
}
fprintf(fp, " */\n");
}
static struct conf_printer header_printer_cb =
{
.print_symbol = header_print_symbol,
.print_comment = header_print_comment,
};
static void conf_write_symbol(FILE *fp, struct symbol *sym,
struct conf_printer *printer, void *printer_arg)
{
const char *str;
switch (sym->type) {
case S_UNKNOWN:
break;
case S_STRING:
str = sym_get_string_value(sym);
str = sym_escape_string_value(str);
printer->print_symbol(fp, sym, str, printer_arg);
free((void *)str);
break;
default:
str = sym_get_string_value(sym);
printer->print_symbol(fp, sym, str, printer_arg);
}
}
static void
conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
{
char buf[256];
snprintf(buf, sizeof(buf),
"\n"
"Automatically generated file; DO NOT EDIT.\n"
"%s\n",
rootmenu.prompt->text);
printer->print_comment(fp, buf, printer_arg);
free(escaped);
}
/*
@ -815,7 +806,7 @@ int conf_write_defconfig(const char *filename)
goto next_menu;
}
}
conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
print_symbol_for_dotconfig(out, sym);
}
next_menu:
if (menu->list != NULL) {
@ -875,7 +866,7 @@ int conf_write(const char *name)
if (!out)
return 1;
conf_write_heading(out, &kconfig_printer_cb, NULL);
conf_write_heading(out, &comment_style_pound);
if (!conf_get_changed())
sym_clear_all_valid();
@ -902,7 +893,7 @@ int conf_write(const char *name)
need_newline = false;
}
sym->flags |= SYMBOL_WRITTEN;
conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
print_symbol_for_dotconfig(out, sym);
}
next:
@ -952,32 +943,50 @@ int conf_write(const char *name)
}
/* write a dependency file as used by kbuild to track dependencies */
static int conf_write_dep(const char *name)
static int conf_write_autoconf_cmd(const char *autoconf_name)
{
char name[PATH_MAX], tmp[PATH_MAX];
struct file *file;
FILE *out;
int ret;
out = fopen("..config.tmp", "w");
if (!out)
return 1;
fprintf(out, "deps_config := \\\n");
for (file = file_list; file; file = file->next) {
if (file->next)
fprintf(out, "\t%s \\\n", file->name);
else
fprintf(out, "\t%s\n", file->name);
}
fprintf(out, "\n%s: \\\n"
"\t$(deps_config)\n\n", conf_get_autoconfig_name());
env_write_dep(out, conf_get_autoconfig_name());
fprintf(out, "\n$(deps_config): ;\n");
fclose(out);
ret = snprintf(name, sizeof(name), "%s.cmd", autoconf_name);
if (ret >= sizeof(name)) /* check truncation */
return -1;
if (make_parent_dir(name))
return 1;
rename("..config.tmp", name);
return -1;
ret = snprintf(tmp, sizeof(tmp), "%s.cmd.tmp", autoconf_name);
if (ret >= sizeof(tmp)) /* check truncation */
return -1;
out = fopen(tmp, "w");
if (!out) {
perror("fopen");
return -1;
}
fprintf(out, "deps_config := \\\n");
for (file = file_list; file; file = file->next)
fprintf(out, "\t%s \\\n", file->name);
fprintf(out, "\n%s: $(deps_config)\n\n", autoconf_name);
env_write_dep(out, autoconf_name);
fprintf(out, "\n$(deps_config): ;\n");
if (ferror(out)) /* error check for all fprintf() calls */
return -1;
fclose(out);
if (rename(tmp, name)) {
perror("rename");
return -1;
}
return 0;
}
@ -1053,63 +1062,83 @@ static int conf_touch_deps(void)
return 0;
}
static int __conf_write_autoconf(const char *filename,
void (*print_symbol)(FILE *, struct symbol *),
const struct comment_style *comment_style)
{
char tmp[PATH_MAX];
FILE *file;
struct symbol *sym;
int ret, i;
if (make_parent_dir(filename))
return -1;
ret = snprintf(tmp, sizeof(tmp), "%s.tmp", filename);
if (ret >= sizeof(tmp)) /* check truncation */
return -1;
file = fopen(tmp, "w");
if (!file) {
perror("fopen");
return -1;
}
conf_write_heading(file, comment_style);
for_all_symbols(i, sym)
if ((sym->flags & SYMBOL_WRITE) && sym->name)
print_symbol(file, sym);
/* check possible errors in conf_write_heading() and print_symbol() */
if (ferror(file))
return -1;
fclose(file);
if (rename(tmp, filename)) {
perror("rename");
return -1;
}
return 0;
}
int conf_write_autoconf(int overwrite)
{
struct symbol *sym;
const char *name;
const char *autoconf_name = conf_get_autoconfig_name();
FILE *out, *out_h;
int i;
int ret, i;
if (!overwrite && is_present(autoconf_name))
return 0;
conf_write_dep("include/config/auto.conf.cmd");
ret = conf_write_autoconf_cmd(autoconf_name);
if (ret)
return -1;
if (conf_touch_deps())
return 1;
out = fopen(".tmpconfig", "w");
if (!out)
return 1;
out_h = fopen(".tmpconfig.h", "w");
if (!out_h) {
fclose(out);
return 1;
}
conf_write_heading(out, &kconfig_printer_cb, NULL);
conf_write_heading(out_h, &header_printer_cb, NULL);
for_all_symbols(i, sym) {
for_all_symbols(i, sym)
sym_calc_value(sym);
if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
continue;
/* write symbols to auto.conf and autoconf.h */
conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
}
fclose(out);
fclose(out_h);
ret = __conf_write_autoconf(conf_get_autoheader_name(),
print_symbol_for_c,
&comment_style_c);
if (ret)
return ret;
name = getenv("KCONFIG_AUTOHEADER");
if (!name)
name = "include/generated/autoconf.h";
if (make_parent_dir(name))
return 1;
if (rename(".tmpconfig.h", name))
return 1;
if (make_parent_dir(autoconf_name))
return 1;
/*
* This must be the last step, kbuild has a dependency on auto.conf
* and this marks the successful completion of the previous steps.
* Create include/config/auto.conf. This must be the last step because
* Kbuild has a dependency on auto.conf and this marks the successful
* completion of the previous steps.
*/
if (rename(".tmpconfig", autoconf_name))
return 1;
ret = __conf_write_autoconf(conf_get_autoconfig_name(),
print_symbol_for_autoconf,
&comment_style_pound);
if (ret)
return ret;
return 0;
}

9
scripts/kconfig/lexer.l
View file

@ -84,8 +84,7 @@ static void warn_ignored_character(char chr)
n [A-Za-z0-9_-]
%%
int str = 0;
int ts, i;
char open_quote = 0;
#.* /* ignore comment */
[ \t]* /* whitespaces */
@ -134,7 +133,7 @@ n [A-Za-z0-9_-]
":=" return T_COLON_EQUAL;
"+=" return T_PLUS_EQUAL;
\"|\' {
str = yytext[0];
open_quote = yytext[0];
new_string();
BEGIN(STRING);
}
@ -171,7 +170,7 @@ n [A-Za-z0-9_-]
append_string(yytext + 1, yyleng - 1);
}
\'|\" {
if (str == yytext[0]) {
if (open_quote == yytext[0]) {
BEGIN(INITIAL);
yylval.string = text;
return T_WORD_QUOTE;
@ -196,6 +195,8 @@ n [A-Za-z0-9_-]
<HELP>{
[ \t]+ {
int ts, i;
ts = 0;
for (i = 0; i < yyleng; i++) {
if (yytext[i] == '\t')

2
scripts/kconfig/lkc_proto.h
View file

@ -18,7 +18,7 @@ extern struct symbol * symbol_hash[SYMBOL_HASHSIZE];
struct symbol * sym_lookup(const char *name, int flags);
struct symbol * sym_find(const char *name);
const char * sym_escape_string_value(const char *in);
void print_symbol_for_listconfig(struct symbol *sym);
struct symbol ** sym_re_search(const char *pattern);
const char * sym_type_name(enum symbol_type type);
void sym_calc_value(struct symbol *sym);

33
scripts/kconfig/menu.c
View file

@ -728,7 +728,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
get_dep_str(r, prop->visible.expr, " Visible if: ");
menu = prop->menu->parent;
for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
for (i = 0; menu && i < 8; menu = menu->parent) {
bool accessible = menu_is_visible(menu);
submenu[i++] = menu;
@ -758,21 +758,24 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
list_add_tail(&jump->entries, head);
}
if (i > 0) {
str_printf(r, " Location:\n");
for (j = 4; --i >= 0; j += 2) {
menu = submenu[i];
if (jump && menu == location)
jump->offset = strlen(r->s);
str_printf(r, "%*c-> %s", j, ' ',
menu_get_prompt(menu));
if (menu->sym) {
str_printf(r, " (%s [=%s])", menu->sym->name ?
menu->sym->name : "<choice>",
sym_get_string_value(menu->sym));
}
str_append(r, "\n");
str_printf(r, " Location:\n");
for (j = 4; --i >= 0; j += 2) {
menu = submenu[i];
if (jump && menu == location)
jump->offset = strlen(r->s);
if (menu == &rootmenu)
/* The real rootmenu prompt is ugly */
str_printf(r, "%*cMain menu", j, ' ');
else
str_printf(r, "%*c-> %s", j, ' ', menu_get_prompt(menu));
if (menu->sym) {
str_printf(r, " (%s [=%s])", menu->sym->name ?
menu->sym->name : "<choice>",
sym_get_string_value(menu->sym));
}
str_append(r, "\n");
}
}

43
scripts/kconfig/symbol.c
View file

@ -871,49 +871,6 @@ struct symbol *sym_find(const char *name)
return symbol;
}
const char *sym_escape_string_value(const char *in)
{
const char *p;
size_t reslen;
char *res;
size_t l;
reslen = strlen(in) + strlen("\"\"") + 1;
p = in;
for (;;) {
l = strcspn(p, "\"\\");
p += l;
if (p[0] == '\0')
break;
reslen++;
p++;
}
res = xmalloc(reslen);
res[0] = '\0';
strcat(res, "\"");
p = in;
for (;;) {
l = strcspn(p, "\"\\");
strncat(res, p, l);
p += l;
if (p[0] == '\0')
break;
strcat(res, "\\");
strncat(res, p++, 1);
}
strcat(res, "\"");
return res;
}
struct sym_match {
struct symbol *sym;
off_t so, eo;

6
scripts/link-vmlinux.sh
View file

@ -360,14 +360,14 @@ if [ -n "${CONFIG_KALLSYMS}" ]; then
# kallsyms support
# Generate section listing all symbols and add it into vmlinux
# It's a three step process:
# 1) Link .tmp_vmlinux1 so it has all symbols and sections,
# 1) Link .tmp_vmlinux.kallsyms1 so it has all symbols and sections,
# but __kallsyms is empty.
# Running kallsyms on that gives us .tmp_kallsyms1.o with
# the right size
# 2) Link .tmp_vmlinux2 so it now has a __kallsyms section of
# 2) Link .tmp_vmlinux.kallsyms2 so it now has a __kallsyms section of
# the right size, but due to the added section, some
# addresses have shifted.
# From here, we generate a correct .tmp_kallsyms2.o
# From here, we generate a correct .tmp_vmlinux.kallsyms2.o
# 3) That link may have expanded the kernel image enough that
# more linker branch stubs / trampolines had to be added, which
# introduces new names, which further expands kallsyms. Do another

4
scripts/package/buildtar
View file

@ -39,6 +39,10 @@ case "${1}" in
opts="-I ${XZ}"
tarball=${tarball}.xz
;;
tarzst-pkg)
opts="-I ${ZSTD}"
tarball=${tarball}.zst
;;
*)
echo "Unknown tarball target \"${1}\" requested, please add it to ${0}." >&2
exit 1

20
usr/gen_init_cpio.c
View file

@ -188,7 +188,7 @@ struct generic_type {
mode_t mode;
};
static struct generic_type generic_type_table[] = {
static const struct generic_type generic_type_table[] = {
[GT_DIR] = {
.type = "dir",
.mode = S_IFDIR
@ -320,6 +320,12 @@ static int cpio_mkfile(const char *name, const char *location,
goto error;
}
if (buf.st_mtime > 0xffffffff) {
fprintf(stderr, "%s: Timestamp exceeds maximum cpio timestamp, clipping.\n",
location);
buf.st_mtime = 0xffffffff;
}
filebuf = malloc(buf.st_size);
if (!filebuf) {
fprintf (stderr, "out of memory\n");
@ -491,7 +497,7 @@ static void usage(const char *prog)
prog);
}
struct file_handler file_handler_table[] = {
static const struct file_handler file_handler_table[] = {
{
.type = "file",
.handler = cpio_mkfile_line,
@ -551,6 +557,16 @@ int main (int argc, char *argv[])
}
}
/*
* Timestamps after 2106-02-07 06:28:15 UTC have an ascii hex time_t
* representation that exceeds 8 chars and breaks the cpio header
* specification.
*/
if (default_mtime > 0xffffffff) {
fprintf(stderr, "ERROR: Timestamp too large for cpio format\n");
exit(1);
}
if (argc - optind != 1) {
usage(argv[0]);
exit(1);