89a47dd1af
- fix randconfig to generate a sane .config
- rename hostprogs-y / always to hostprogs / always-y, which are
more natual syntax.
- optimize scripts/kallsyms
- fix yes2modconfig and mod2yesconfig
- make multiple directory targets ('make foo/ bar/') work
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Merge tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- fix randconfig to generate a sane .config
- rename hostprogs-y / always to hostprogs / always-y, which are more
natual syntax.
- optimize scripts/kallsyms
- fix yes2modconfig and mod2yesconfig
- make multiple directory targets ('make foo/ bar/') work
* tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: make multiple directory targets work
kconfig: Invalidate all symbols after changing to y or m.
kallsyms: fix type of kallsyms_token_table[]
scripts/kallsyms: change table to store (strcut sym_entry *)
scripts/kallsyms: rename local variables in read_symbol()
kbuild: rename hostprogs-y/always to hostprogs/always-y
kbuild: fix the document to use extra-y for vmlinux.lds
kconfig: fix broken dependency in randconfig-generated .config
2.9 KiB
SPDX-License-Identifier: GPL-2.0
kbuild file for usr/ - including initramfs image
cmd_bzip2, cmd_lzma, cmd_lzo, cmd_lz4 from scripts/Makefile.lib appends the
size at the end of the compressed file, which unfortunately does not work
with unpack_to_rootfs(). Make size_append no-op.
override size_append := :
compress-y := shipped compress-$(CONFIG_INITRAMFS_COMPRESSION_GZIP) := gzip compress-$(CONFIG_INITRAMFS_COMPRESSION_BZIP2) := bzip2 compress-$(CONFIG_INITRAMFS_COMPRESSION_LZMA) := lzma compress-$(CONFIG_INITRAMFS_COMPRESSION_XZ) := xzmisc compress-$(CONFIG_INITRAMFS_COMPRESSION_LZO) := lzo compress-$(CONFIG_INITRAMFS_COMPRESSION_LZ4) := lz4
obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o
$(obj)/initramfs_data.o: $(obj)/initramfs_inc_data
ramfs-input := $(strip $(shell echo $(CONFIG_INITRAMFS_SOURCE))) cpio-data :=
If CONFIG_INITRAMFS_SOURCE is empty, generate a small initramfs with the
default contents.
ifeq ($(ramfs-input),) ramfs-input := $(srctree)/$(src)/default_cpio_list endif
ifeq ($(words $(ramfs-input)),1)
If CONFIG_INITRAMFS_SOURCE specifies a single file, and it is suffixed with
.cpio, use it directly as an initramfs.
ifneq ($(filter %.cpio,$(ramfs-input)),) cpio-data := $(ramfs-input) endif
If CONFIG_INITRAMFS_SOURCE specifies a single file, and it is suffixed with
.cpio.*, use it directly as an initramfs, and avoid double compression.
ifeq ($(words $(subst .cpio.,$(space),$(ramfs-input))),2) cpio-data := $(ramfs-input) compress-y := shipped endif
endif
For other cases, generate the initramfs cpio archive based on the contents
specified by CONFIG_INITRAMFS_SOURCE.
ifeq ($(cpio-data),)
cpio-data := $(obj)/initramfs_data.cpio
hostprogs := gen_init_cpio
.initramfs_data.cpio.d is used to identify all files included
in initramfs and to detect if any files are added/removed.
Removed files are identified by directory timestamp being updated
The dependency list is generated by gen_initramfs.sh -l
-include $(obj)/.initramfs_data.cpio.d
do not try to update files included in initramfs
$(deps_initramfs): ;
quiet_cmd_initfs = GEN $@
cmd_initfs =
$(CONFIG_SHELL) $< -o $@ -l $(obj)/.initramfs_data.cpio.d
$(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID))
$(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID))
$(ramfs-input)
We rebuild initramfs_data.cpio if:
1) Any included file is newer than initramfs_data.cpio
2) There are changes in which files are included (added or deleted)
3) If gen_init_cpio are newer than initramfs_data.cpio
4) Arguments to gen_initramfs.sh changes
$(obj)/initramfs_data.cpio: $(src)/gen_initramfs.sh $(obj)/gen_init_cpio $(deps_initramfs) FORCE $(call if_changed,initfs)
endif
$(obj)/initramfs_inc_data: $(cpio-data) FORCE $(call if_changed,$(compress-y))
targets += initramfs_data.cpio initramfs_inc_data
subdir-$(CONFIG_UAPI_HEADER_TEST) += include