mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 21:33:00 +00:00
6279eb3dd7
Since9e3596b0c6("kbuild: initramfs cleanup, set target from Kconfig") "make clean" leaves behind compressed initramfs images. Example: $ make defconfig $ sed -i 's|CONFIG_INITRAMFS_SOURCE=""|CONFIG_INITRAMFS_SOURCE="/tmp/ir.cpio"|' .config $ make olddefconfig $ make -s $ make -s clean $ git clean -ndxf | grep initramfs Would remove usr/initramfs_data.cpio.gz clean rules do not have CONFIG_* context so they do not know which compression format was used. Thus they don't know which files to delete. Tell clean to delete all possible compression formats. Once patched usr/initramfs_data.cpio.gz and friends are deleted by "make clean". Link: http://lkml.kernel.org/r/20190722063251.55541-1-gthelen@google.com Fixes:9e3596b0c6("kbuild: initramfs cleanup, set target from Kconfig") Signed-off-by: Greg Thelen <gthelen@google.com> Cc: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
64 lines
2.2 KiB
Makefile
64 lines
2.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# kbuild file for usr/ - including initramfs image
|
|
#
|
|
|
|
klibcdirs:;
|
|
PHONY += klibcdirs
|
|
|
|
suffix_y = $(subst $\",,$(CONFIG_INITRAMFS_COMPRESSION))
|
|
datafile_y = initramfs_data.cpio$(suffix_y)
|
|
datafile_d_y = .$(datafile_y).d
|
|
AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/$(datafile_y)"
|
|
|
|
# clean rules do not have CONFIG_INITRAMFS_COMPRESSION. So clean up after all
|
|
# possible compression formats.
|
|
clean-files += initramfs_data.cpio*
|
|
|
|
# Generate builtin.o based on initramfs_data.o
|
|
obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o
|
|
|
|
# initramfs_data.o contains the compressed initramfs_data.cpio image.
|
|
# The image is included using .incbin, a dependency which is not
|
|
# tracked automatically.
|
|
$(obj)/initramfs_data.o: $(obj)/$(datafile_y) FORCE
|
|
|
|
#####
|
|
# Generate the initramfs cpio archive
|
|
|
|
hostprogs-y := gen_init_cpio
|
|
initramfs := $(CONFIG_SHELL) $(srctree)/$(src)/gen_initramfs_list.sh
|
|
ramfs-input := $(if $(filter-out "",$(CONFIG_INITRAMFS_SOURCE)), \
|
|
$(shell echo $(CONFIG_INITRAMFS_SOURCE)),-d)
|
|
ramfs-args := \
|
|
$(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \
|
|
$(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID))
|
|
|
|
# $(datafile_d_y) is used to identify all files included
|
|
# in initramfs and to detect if any files are added/removed.
|
|
# Removed files are identified by directory timestamp being updated
|
|
# The dependency list is generated by gen_initramfs.sh -l
|
|
ifneq ($(wildcard $(obj)/$(datafile_d_y)),)
|
|
include $(obj)/$(datafile_d_y)
|
|
endif
|
|
|
|
quiet_cmd_initfs = GEN $@
|
|
cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)
|
|
|
|
targets := $(datafile_y)
|
|
|
|
# do not try to update files included in initramfs
|
|
$(deps_initramfs): ;
|
|
|
|
$(deps_initramfs): klibcdirs
|
|
# 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
|
|
$(obj)/$(datafile_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
|
|
$(Q)$(initramfs) -l $(ramfs-input) > $(obj)/$(datafile_d_y)
|
|
$(call if_changed,initfs)
|
|
|
|
subdir-$(CONFIG_UAPI_HEADER_TEST) += include
|