kbuild: allow compressors (gzip, bzip2, lzma) to take multiple inputs

# ---------------------------------------------------------------------------

quiet_cmd_gzip = GZIP    $@

cmd_gzip = gzip -f -9 < $< > $@

cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -f -9 > $@) || \

	(rm -f $@ ; false)

# Bzip2

# ---------------------------------------------------------------------------

# Bzip2 does not include size in file... so we have to fake that

size_append=$(CONFIG_SHELL) $(srctree)/scripts/bin_size

# 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 = echo -ne $(shell						\

dec_size=0;								\

for F in $1; do								\

	fsize=$$(stat -c "%s" $$F);					\

	dec_size=$$(expr $$dec_size + $$fsize);				\

done;									\

printf "%08x" $$dec_size |						\

	sed 's/\(..\)\(..\)\(..\)\(..\)/\\\\x\4\\\\x\3\\\\x\2\\\\x\1/g'	\

)

quiet_cmd_bzip2 = BZIP2   $@

cmd_bzip2 = (bzip2 -9 < $< && $(size_append) $<) > $@ || (rm -f $@ ; false)

cmd_bzip2 = (cat $(filter-out FORCE,$^) | \

	bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \

	(rm -f $@ ; false)

# Lzma

# ---------------------------------------------------------------------------

quiet_cmd_lzma = LZMA    $@

cmd_lzma = (lzma -9 -c $< && $(size_append) $<) >$@ || (rm -f $@ ; false)

cmd_lzma = (cat $(filter-out FORCE,$^) | \

	lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \

	(rm -f $@ ; false)

#!/bin/sh

if [ $# = 0 ] ; then

   echo Usage: $0 file

fi

size_dec=`stat -c "%s" $1`

size_hex_echo_string=`printf "%08x" $size_dec |

     sed 's/\(..\)\(..\)\(..\)\(..\)/\\\\x\4\\\\x\3\\\\x\2\\\\x\1/g'`

/bin/echo -ne $size_hex_echo_string