-u update existing chroot instead of rebuilding it from scratch
-v <version_number> specify version number of the release
-V increase verbosity in the build process
- -z use ZLIB instead of LZMA compression (depends on
- squashfs-tools version)
+ -z use ZLIB instead of LZMA compression
Usage examples:
# make sure we don't leave (even an empty) base.tgz:
[ -f "$CHROOT_OUTPUT/base.tgz" ] && rm -f "$CHROOT_OUTPUT/base.tgz"
- # $SQUASHFS_BINARY is specified in the configuration:
- if [ -n "$SQUASHFS_BINARY" ] ; then
- if which "$SQUASHFS_BINARY" >/dev/null 2>&1 ; then
- log "Using specified mksquashfs binary ${SQUASHFS_BINARY}"
- einfo "Using specified mksquashfs binary ${SQUASHFS_BINARY}" ; eend 0
- else
- log "Error: specified mksquashfs binary ($SQUASHFS_BINARY) not found. Exiting."
- eerror "Error: specified mksquashfs binary ($SQUASHFS_BINARY) not found. Exiting." ; eend 1
- bailout
- fi
- # no $SQUASHFS_BINARY configured, let's find the according binary:
- else
- # Note: this is ALL for backward compatibility and yes: it's serious PITA.
- # We'll definitely drop this once people build >=2.6.35-grml* only and
- # the squashfs-tools vs. squashfs-lzma-tools vs. squashfs-lzma-tools4 and
- # zlib/gzip vs. lzma situation is settling with new squashfs file format (v4)
-
- if ls $CHROOT_OUTPUT/boot/vmlinuz* >/dev/null 2>&1 ; then
- KERNEL_IMAGE="$(ls $CHROOT_OUTPUT/boot/vmlinuz* 2>/dev/null | sort -r | head -1)"
- else
- KERNEL_IMAGE="unset"
- fi
-
- case $KERNEL_IMAGE in
- *vmlinuz-2.6.31-grml*|*vmlinuz-2.6.33-grml*)
- SQUASHFS_BINARY='mksquashfs-lzma'
-
- # if using zlib compression kernel 2.6.3{1,3}-grml can be used with
- # mksquashfs as well, therefore try to fall back if mksquashfs-lzma
- # is NOT available
- if ! which $SQUASHFS_BINARY >/dev/null 2>&1 && [ -n "$SQUASHFS_ZLIB" ] ; then
- log "Squashfs binary $SQUASHFS_BINARY not available but building with zlib..."
- log "\`-> trying to fall back to mksquashfs."
- ewarn "Squashfs binary $SQUASHFS_BINARY not available but building with zlib..."
- ewarn "\`-> trying to fall back to mksquashfs."
- SQUASHFS_BINARY='mksquashfs'
- eend 0
- fi
- ;;
-
- *vmlinuz-2.6.35-grml*)
- SQUASHFS_BINARY='mksquashfs-lzma4'
-
- # if using zlib compression kernel 2.6.35-grml can be used with
- # mksquashfs-lzma as well, therefore try to fall back if
- # mksquashfs-lzma4 is NOT available
- if ! which $SQUASHFS_BINARY >/dev/null 2>&1 && [ -n "$SQUASHFS_ZLIB" ] ; then
- log "Squashfs binary $SQUASHFS_BINARY not available but building with zlib..."
- log "\`-> trying to fall back to mksquashfs-lzma."
- ewarn "Squashfs binary $SQUASHFS_BINARY not available but building with zlib..."
- ewarn "\`-> trying to fall back to mksquashfs-lzma."
- SQUASHFS_BINARY='mksquashfs-lzma'
- eend 0
- fi
-
- # squashfs-tools 1:4.0-x work with 2.6.35-grml as well with default
- # options, they just lack proper LZMA compression, so fall back as
- # last option and inform user
- if ! which $SQUASHFS_BINARY >/dev/null 2>&1 ; then
- log "Squashfs binary $SQUASHFS_BINARY not available either..."
- log "\`-> trying to fall back to mksquashfs, WARNING: very probably lacks LZMA compression."
- ewarn "Squashfs binary $SQUASHFS_BINARY not available either..."
- ewarn "\`-> trying to fall back to mksquashfs, WARNING: very probably lacks LZMA compression."
- SQUASHFS_BINARY='mksquashfs'
- eend 0
- fi
- ;;
-
- *vmlinuz-2.6.23-grml*|*vmlinuz-2.6.26-grml*|*vmlinuz-2.6.28-grml*)
- log "Strongly outdated kernel version detected: $KERNEL_IMAGE"
- eerror "Strongly outdated kernel version detected: $KERNEL_IMAGE"
- eerror "|-> please update kernel version of live system to at *least* 2.6.31-grml[64]..."
- eerror "\`-> or otherwise (not recommended though) set SQUASHFS_BINARY accordingly."
- eend 1
- bailout
- ;;
-
- *)
- SQUASHFS_BINARY='mksquashfs'
- log "Could not detect grml kernel version and SQUASHFS_BINARY is unset."
- ewarn "Could not detect grml kernel version and SQUASHFS_BINARY is unset."
- ewarn "\`-> Assuming you want to use mksquashfs binary, if it fails please override with \$SQUASHFS_BINARY."
- eend 0
- ;;
- esac
-
- # check whether we have the according binary available:
- if ! which $SQUASHFS_BINARY >/dev/null 2>&1 ; then
- log "Error: required mksquashfs binary (${SQUASHFS_BINARY}) could not be found. Exiting."
- eerror "Error: required mksquashfs binary (${SQUASHFS_BINARY}) could not be found. Exiting."
- eerror "|-> Make sure to install squashfs-tool, squashfs-lzma-tools and/or squashfs-lzma-tools4..."
- eerror "|-> ... and set \$SQUASHFS_BINARY accordingly to the kernel version."
- eerror "\`-> Visit http://grml.org/grml-live/#current_state for further details."
- eend 1
- bailout
- fi
+ # if unconfigured default to squashfs-tools' mksquashfs binary
+ if [ -z "$SQUASHFS_BINARY" ] ; then
+ SQUASHFS_BINARY='mksquashfs'
+ fi
- fi # end of SQUASHFS_BINARY handling
+ if which "$SQUASHFS_BINARY" >/dev/null 2>&1 ; then
+ log "Using mksquashfs binary ${SQUASHFS_BINARY}"
+ einfo "Using mksquashfs binary ${SQUASHFS_BINARY}" ; eend 0
+ else
+ log "Error: mksquashfs binary ($SQUASHFS_BINARY) not found. Exiting."
+ eerror "Error: mksquashfs binary ($SQUASHFS_BINARY) not found. Exiting." ; eend 1
+ bailout
+ fi
# use sane defaults if $SQUASHFS_OPTIONS isn't set
if [ -z "$SQUASHFS_OPTIONS" ] ; then
# use blocksize 256k as this gives best result with regards to time + compression
- [[ "$SQUASHFS_BINARY" == mksquashfs-lzma* ]] && SQUASHFS_OPTIONS="-b 256k"
+ SQUASHFS_OPTIONS="-b 256k"
# set lzma compression by default, unless -z option has been specified on command line
if [ -z "$SQUASHFS_ZLIB" ] ; then
- case "$SQUASHFS_BINARY" in
- mksquashfs-lzma) SQUASHFS_OPTIONS="$SQUASHFS_OPTIONS -lzma";;
- mksquashfs-lzma4) SQUASHFS_OPTIONS="$SQUASHFS_OPTIONS -comp lzma";;
- esac
+ SQUASHFS_OPTIONS="$SQUASHFS_OPTIONS -comp lzma"
fi
-
fi
# support exclusion of files via exclude-file:
SQUASHFS_OPTIONS="$SQUASHFS_OPTIONS -e initrd.img* vmlinuz*"
fi
- # be backwards compatible, for squashfs-tools 1:3.2r2-9exp1 and squashfs-lzma-tools 3.3-1,
- # make sure to drop the -nolzma option if it's not available:
- if echo "$SQUASHFS_OPTIONS" | grep -q -- "-nolzma" ; then
- if ! $SQUASHFS_BINARY --help 2>&1 | grep -q -- '-nolzma' ; then
- log "The $SQUASHFS_BINARY binary does NOT support the nolzma option, dropping it and using default mode."
- ewarn "The $SQUASHFS_BINARY binary does NOT support the nolzma option, dropping it and using default mode."
- SQUASHFS_OPTIONS="$(echo $SQUASHFS_OPTIONS | sed 's/-nolzma//g')"
- eend 0
- fi
- fi
-
- # if user doesn't want to use LZMA (e.g. running grml-live -z ...):
- if [ -n "$SQUASHFS_ZLIB" ] ; then
- if $SQUASHFS_BINARY --help 2>&1 | grep -q -- "-nolzma" ; then
- SQUASHFS_OPTIONS="$SQUASHFS_OPTIONS -nolzma"
- fi
- fi
-
# log stuff
SQUASHFS_STDERR="$(mktemp -t grml-live.XXXXXX)"
projects / grml-live.git / blobdiff