path: root/usr/Makefile
diff options
authorAlain Knaff <alain@knaff.lu>2009-01-07 00:10:27 -0800
committerH. Peter Anvin <hpa@zytor.com>2009-01-07 00:10:27 -0800
commita26ee60f90daffe1de6be0d093af86e7279b3dfd (patch)
tree01239fb6b173ff46711480b9601c69b92e1715a5 /usr/Makefile
parentfb9a4ca9820fd4d7c4906bd393004662451e273e (diff)
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')
1 files changed, 30 insertions, 12 deletions
diff --git a/usr/Makefile b/usr/Makefile
index 201f27f8cba..451cdff7dff 100644
--- a/usr/Makefile
+++ b/usr/Makefile
@@ -5,14 +5,32 @@
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 := \
-# .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
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)