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kbuild: initramfs cleanup, set target from Kconfig 

Rather than keep a list of all possible compression types in the
Makefile, set the target explicitly from Kconfig.

Reviewed-by: Francisco Blas Izquierdo Riera (klondike) <klondike@klondike.es>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nicholas Piggin 2017-01-05 20:29:36 +10:00 committed by Linus Torvalds
parent ae30ab4cd7
commit 9e3596b0c6
1 changed files with 7 additions and 7 deletions
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14
usr/Makefile
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@ -6,7 +6,9 @@ klibcdirs:;
PHONY += klibcdirs
suffix_y = $(subst $\",,$(CONFIG_INITRAMFS_COMPRESSION))
AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/initramfs_data.cpio$(suffix_y)"
datafile_y = initramfs_data.cpio$(suffix_y)
AFLAGS_initramfs_data.o += -DINITRAMFS_IMAGE="usr/$(datafile_y)"
# Generate builtin.o based on initramfs_data.o
obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o
@ -14,7 +16,7 @@ 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: $(obj)/initramfs_data.cpio$(suffix_y) FORCE
$(obj)/initramfs_data.o: $(obj)/$(datafile_y) FORCE
#####
# Generate the initramfs cpio archive
@ -38,10 +40,8 @@ endif
quiet_cmd_initfs = GEN $@
cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input)
targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 \
initramfs_data.cpio.lzma initramfs_data.cpio.xz \
initramfs_data.cpio.lzo initramfs_data.cpio.lz4 \
initramfs_data.cpio
targets := $(datafile_y)
# do not try to update files included in initramfs
$(deps_initramfs): ;
@ -51,6 +51,6 @@ $(deps_initramfs): klibcdirs
# 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
$(obj)/initramfs_data.cpio$(suffix_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
$(obj)/$(datafile_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs
$(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.d
$(call if_changed,initfs)