scripts/Makefile.lib: update compress cmd support
import from linux 3.2-rc3 update gzip and add bzip2, lzma, lzo and xz Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
parent
7caf8009cc
commit
b74f8dd81d
|
@ -160,6 +160,71 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
|
|||
# ---------------------------------------------------------------------------
|
||||
|
||||
quiet_cmd_gzip = GZIP $@
|
||||
cmd_gzip = gzip -f -9 < $< > $@
|
||||
cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
|
||||
(rm -f $@ ; false)
|
||||
|
||||
# Bzip2
|
||||
# ---------------------------------------------------------------------------
|
||||
|
||||
# Bzip2 and LZMA do not include size in file... so we have to fake that;
|
||||
# append the size as a 32-bit littleendian number as gzip does.
|
||||
size_append = printf $(shell \
|
||||
dec_size=0; \
|
||||
for F in $1; do \
|
||||
fsize=$$(stat -c "%s" $$F); \
|
||||
dec_size=$$(expr $$dec_size + $$fsize); \
|
||||
done; \
|
||||
printf "%08x\n" $$dec_size | \
|
||||
sed 's/\(..\)/\1 /g' | { \
|
||||
read ch0 ch1 ch2 ch3; \
|
||||
for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \
|
||||
printf '%s%03o' '\\' $$((0x$$ch)); \
|
||||
done; \
|
||||
} \
|
||||
)
|
||||
|
||||
quiet_cmd_bzip2 = BZIP2 $@
|
||||
cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
|
||||
bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
|
||||
(rm -f $@ ; false)
|
||||
|
||||
# Lzma
|
||||
# ---------------------------------------------------------------------------
|
||||
|
||||
quiet_cmd_lzma = LZMA $@
|
||||
cmd_lzma = (cat $(filter-out FORCE,$^) | \
|
||||
lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
|
||||
(rm -f $@ ; false)
|
||||
|
||||
quiet_cmd_lzo = LZO $@
|
||||
cmd_lzo = (cat $(filter-out FORCE,$^) | \
|
||||
lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
|
||||
(rm -f $@ ; false)
|
||||
|
||||
# XZ
|
||||
# ---------------------------------------------------------------------------
|
||||
# Use xzkern to compress the kernel image and xzmisc to compress other things.
|
||||
#
|
||||
# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
|
||||
# of the kernel decompressor. A BCJ filter is used if it is available for
|
||||
# the target architecture. xzkern also appends uncompressed size of the data
|
||||
# using size_append. The .xz format has the size information available at
|
||||
# the end of the file too, but it's in more complex format and it's good to
|
||||
# avoid changing the part of the boot code that reads the uncompressed size.
|
||||
# Note that the bytes added by size_append will make the xz tool think that
|
||||
# the file is corrupt. This is expected.
|
||||
#
|
||||
# xzmisc doesn't use size_append, so it can be used to create normal .xz
|
||||
# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
|
||||
# big dictionary would increase the memory usage too much in the multi-call
|
||||
# decompression mode. A BCJ filter isn't used either.
|
||||
quiet_cmd_xzkern = XZKERN $@
|
||||
cmd_xzkern = (cat $(filter-out FORCE,$^) | \
|
||||
sh $(srctree)/scripts/xz_wrap.sh && \
|
||||
$(call size_append, $(filter-out FORCE,$^))) > $@ || \
|
||||
(rm -f $@ ; false)
|
||||
|
||||
quiet_cmd_xzmisc = XZMISC $@
|
||||
cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
|
||||
xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
|
||||
(rm -f $@ ; false)
|
||||
|
|
Loading…
Reference in New Issue