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author | Alain Knaff <alain@knaff.lu> | 2009-01-07 00:10:27 -0800 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2009-01-07 00:10:27 -0800 |
commit | a26ee60f90daffe1de6be0d093af86e7279b3dfd (patch) | |
tree | 01239fb6b173ff46711480b9601c69b92e1715a5 /usr/Makefile | |
parent | fb9a4ca9820fd4d7c4906bd393004662451e273e (diff) | |
download | kernel-common-a26ee60f90daffe1de6be0d093af86e7279b3dfd.tar.gz kernel-common-a26ee60f90daffe1de6be0d093af86e7279b3dfd.tar.bz2 kernel-common-a26ee60f90daffe1de6be0d093af86e7279b3dfd.zip |
bzip2/lzma: fix built-in initramfs vs CONFIG_RD_GZIP
Impact: Resolves build failures in some configurations
Makes it possible to disable CONFIG_RD_GZIP . In that case, the
built-in initramfs will be compressed by whatever compressor is
available (bzip2 or lzma) or left uncompressed if none is available.
It also removes a couple of warnings which occur when no ramdisk
compression at all is chosen.
It also restores the select ZLIB_INFLATE in drivers/block/Kconfig
which somehow came missing. This is needed to activate compilation of
the stuff in zlib_deflate.
Signed-off-by: Alain Knaff <alain@knaff.lu>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'usr/Makefile')
-rw-r--r-- | usr/Makefile | 42 |
1 files changed, 30 insertions, 12 deletions
diff --git a/usr/Makefile b/usr/Makefile index 201f27f8cbaf..451cdff7dff9 100644 --- a/usr/Makefile +++ b/usr/Makefile @@ -5,14 +5,32 @@ klibcdirs:; PHONY += klibcdirs +# Find out "preferred" ramdisk compressor. Order of preference is +# 1. bzip2 efficient, and likely to be present +# 2. gzip former default +# 3. lzma +# 4. none + +# None of the above +suffix_y = + +# Lzma, but no gzip nor bzip2 +suffix_$(CONFIG_RD_LZMA) = .lzma + +# Gzip, but no bzip2 +suffix_$(CONFIG_RD_GZIP) = .gz + +# Bzip2 +suffix_$(CONFIG_RD_BZIP2) = .bz2 + # Generate builtin.o based on initramfs_data.o -obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o +obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data$(suffix_y).o -# initramfs_data.o contains the initramfs_data.cpio.gz image. +# 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: $(obj)/initramfs_data.cpio.gz FORCE +$(obj)/initramfs_data$(suffix_y).o: $(obj)/initramfs_data.cpio$(suffix_y) FORCE ##### # Generate the initramfs cpio archive @@ -25,28 +43,28 @@ ramfs-args := \ $(if $(CONFIG_INITRAMFS_ROOT_UID), -u $(CONFIG_INITRAMFS_ROOT_UID)) \ $(if $(CONFIG_INITRAMFS_ROOT_GID), -g $(CONFIG_INITRAMFS_ROOT_GID)) -# .initramfs_data.cpio.gz.d is used to identify all files included +# .initramfs_data.cpio.d is used to identify all files included # in initramfs and to detect if any files are added/removed. # Removed files are identified by directory timestamp being updated # The dependency list is generated by gen_initramfs.sh -l -ifneq ($(wildcard $(obj)/.initramfs_data.cpio.gz.d),) - include $(obj)/.initramfs_data.cpio.gz.d +ifneq ($(wildcard $(obj)/.initramfs_data.cpio.d),) + include $(obj)/.initramfs_data.cpio.d endif quiet_cmd_initfs = GEN $@ cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input) -targets := initramfs_data.cpio.gz +targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 initramfs_data.cpio.lzma initramfs_data.cpio # do not try to update files included in initramfs $(deps_initramfs): ; $(deps_initramfs): klibcdirs -# We rebuild initramfs_data.cpio.gz if: -# 1) Any included file is newer then initramfs_data.cpio.gz +# We rebuild initramfs_data.cpio if: +# 1) Any included file is newer then initramfs_data.cpio # 2) There are changes in which files are included (added or deleted) -# 3) If gen_init_cpio are newer than initramfs_data.cpio.gz +# 3) If gen_init_cpio are newer than initramfs_data.cpio # 4) arguments to gen_initramfs.sh changes -$(obj)/initramfs_data.cpio.gz: $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs - $(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.gz.d +$(obj)/initramfs_data.cpio$(suffix_y): $(obj)/gen_init_cpio $(deps_initramfs) klibcdirs + $(Q)$(initramfs) -l $(ramfs-input) > $(obj)/.initramfs_data.cpio.d $(call if_changed,initfs) |