-Use squashfs-tools >=4.1-1 (available from Grml repositories as well as from
-Debian/experimental) to build Grml (based) ISOs featuring kernel version
-2.6.36-grml[64].
-
-////////////////////////////////////////////////////////////////////////////////
-Difference between squashfs-lzma-tools, squashfs-lzma-tools4 and squashfs-tools
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Whereas the ZLIB compression is much faster in the build process, the LZMA
-compression provides a smaller resulting ISO. If you're wondering: the official
-Grml builds use the LZMA compression.
-
-Squashfs-tools was introduced in Debian and once provided support for LZMA
-compression. Sadly LZMA compression within squashfs-tools became unsupported and
-therefore squashfs-lzma-tools[4] had to be introduced and maintained by the Grml
-team. Different kernel versions provide different squashfs file formats. Kernel
-versions until 2.6.28-grml[64] used the 3.x file format but those outdated
-kernels aren't supported by grml-live automatically anymore nowdays (manual
-handling through SQUASHFS_BINARY possible though). Kernel versions
-2.6.31-grml[64] and 2.6.33-grml[64] use openwrt's squashfs lzma file format
-version 4. Kernel versions starting with 2.6.35-grml[64] use the mainline ondisk
-file format version 4.
-
-If you're wondering which package supports what, here's a short overview:
-
-* squashfs-lzma-tools4 4.0-x: ZLIB as default, LZMA support via '-comp lzma'
-option (enabled by grml-live by default), file format version 4 (mainline
-version), package maintained and available from Grml, recommended for current
-grml-live builds featuring kernels >=2.6.35-grml[64]
-
-* squashfs-lzma-tools 4.0-2: ZLIB as default, LZMA support via '-lzma' option
-(enabled by grml-live by default), file format version 4 (openwrt style),
-package maintained and available from Grml, recommended for any grml-live builds
-with kernel versions 2.6.31-grml[64] and 2.6.33-grml[64]
-
-* squashfs-tools 1:4.0-x: ZLIB as default, no LZMA support/options, file format
-version 4, package maintained and available from Debian, recommended only for
-ZLIB-only builds of any grml-live builds with kernel versions >=2.6.31-grml[64]
-
-Outdated, JFTR:
-
-* squashfs-tools 1:3.3-7: ZLIB as default, no LZMA support/options, file format
-version 3
-
-* squashfs-tools 1:3.2r2-9exp1: LZMA as default, ZLIB support via '-nolzma'
-option, file format version 3
-
-* squashfs-lzma-tools 3.3-1: LZMA as default, ZLIB support via '-nolzma' option,
-file format version 3
-
-Now, depending on the kernel version you want to use you need different versions
-of squashfs-tools/squashfs-lzma-tools[4]. Yes, that's a mess (don't ask how much
-this sucks for us developers) - though we're putting lots of effort into our
-toolchain to automatically handle this for you through the grml-live build
-system and provide proper documentation. The situation is supposed to calm down
-with the recent integration of the squashfs file format 4 in the mainline
-kernel. Support for LZMA is pending and as soon as it's available mainline this
-should dramatically simplify the situation for developers as well as users.
-
-[TIP]
-If you want to force usage of a specific mksquashfs binary just set the
-SQUASHFS_BINARY configuration/environment variable. Set SQUASHFS_OPTIONS for
-customizing the options that should be used by the mksquashfs binary during
-build process.
-
-Using squashfs-lzma-tools4 4.0-1 on the build system
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-squashfs-lzma-tools4 4.0-1 is available via the Grml repositories. It provides
-the mksquashfs-lzma4 and unsquashfs-lzma4 binaries. The package does NOT
-conflict with neither Debian's squashfs-tools package nor Grml's
-squashfs-lzma-tools package, so you can install all of them at the same time and
-the build system will try to figure out the best matching binary automatically
-for you.
-
-The packages can be downloaded from
-link:http://deb.grml.org/pool/main/s/squashfs-lzma-tools4/[http://deb.grml.org/pool/main/s/squashfs-lzma-tools4/]
-
-It provides support for the new squashfs file format version 4 (as available in
-mainline, so *not* the one being used by squashfs-lzma-tools and kernel
-2.6.33-grml) and therefore requires kernel versions starting with
-2.6.35-grml[64]. It supports LZMA as well as ZLIB compression. Just use the
-defaults for enabling LZMA or use grml-live's '-z' option if you want to use
-ZLIB compression instead.
-
-* Kernel 2.6.31-grml[64]: works with ZLIB compression, fails with LZMA
-* Kernel 2.6.33-grml[64]: works with ZLIB compression, fails with LZMA
-* Kernel 2.6.35-grml[64]: works with ZLIB *and* LZMA compression
-* Kernel 2.6.36-grml[64]: works with ZLIB *and* LZMA compression
-
-[NOTE]
-squashfs-tools >=4.1-1 and/or squashfs-lzma-tools4 are the recommended package
-for building up2date ISOs with grml-live! Please use other squashfs-* packages
-only if you want to build live systems providing kernel versions older than
-2.6.35-grml*. Use squashfs-tools >=4.1-1 or squashfs-lzma-tools4 from Grml if
-you want to remaster any Grml releases MORE RECENT than 2010.04.
-
-Using squashfs-lzma-tools 4.0-2 on the build system
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-squashfs-lzma-tools 4.0-2 is available via the Grml repositories. It provides
-the mksquashfs-lzma and unsquashfs-lzma binaries. The package does NOT conflict
-with Debian's squashfs-tools package (you can install both of them at the same
-time).
-
-The packages can be downloaded from
-link:http://deb.grml.org/pool/main/s/squashfs-lzma-tools/[http://deb.grml.org/pool/main/s/squashfs-lzma-tools/]
-
-It provides support for the new squashfs file format version 4 (based on openwrt
-patches, this is *not* the mainline file format that's being used by kernel
-2.6.35-grml and squashfs-lzma-tools4!) and therefore requires kernel versions
-newer than 2.6.28-grml[64]. It supports LZMA as well as ZLIB compression. Just
-use the defaults for enabling LZMA or use grml-live's '-z' option if you want to
-use ZLIB instead.
-
-* Kernel \<=2.6.28-grml[64]: does not work
-* Kernel 2.6.31-grml[64]: works
-* Kernel 2.6.33-grml[64]: works
-* Kernel 2.6.35-grml[64]: works for ZLIB compression, fails for LZMA
-
-[NOTE]
-Please use squashfs-lzma-tools >=4.0-2 from Grml only if you want to remaster
-Grml releases 2009.10 and 2010.04 or live systems with their according kernel
-versions.
-
-Using squashfs-tools 1:4.0-X on the build system
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-squashfs-tools >=1:4.0-1 is available in Debian/unstable and Debian/testing. It
-provides the mksquashfs and unsquashfs binaries. The package does NOT conflict
-neither with the squashfs-lzma-tools 4.0-2 package nor with the
-squashfs-lzma-tools4 package (so you can install all of them at the same time).
-
-The packages can be downloaded from
-link:ftp://ftp.de.debian.org/debian/pool/main/s/squashfs-tools/[ftp://ftp.de.debian.org/debian/pool/main/s/squashfs-tools/]
-
-It provides support for the new squashfs file format version 4 and therefore
-requires kernel versions newer than 2.6.28-grml[64].
-
-It does NOT support LZMA compression (dropped with
-link:http://packages.debian.org/changelogs/pool/main/s/squashfs-tools/current/changelog[version
-1:3.3-4] and not yet re-integrated yet, see
-link:http://bugs.debian.org/594595[#594595]). If you need LZMA support please
-use Grml's squashfs-lzma-tools[4] (see sections above) instead.
-
-* Kernels \<=2.6.28-grml[64]: does not work
-* Kernel 2.6.31-grml[64]: works (ZLIB only)
-* Kernel 2.6.33-grml[64]: works (ZLIB only)
-* Kernel 2.6.35-grml[64]: works (ZLIB only)
-* Kernel 2.6.36-grml[64]: works (ZLIB only)
-
-[NOTE]
-Please use squashfs-tools between 4.0-1 and 4.1-1 only if you want to remaster
-Grml releases starting with 2009.10 using the ZLIB compression, please use other
-squashfs packages otherwise instead.
-
-Outdated, JFTR:
-
-Using squashfs-lzma-tools 3.3-1 on the build system
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-squashfs-lzma-tools 3.3-1 from the Grml repository supports kernel
-2.6.26-grml[64] and 2.6.28-grml[64] using both LZMA and ZLIB (-nolzma)
-compression.
-
-The packages can be downloaded from
-link:http://deb.grml.org/pool/main/s/squashfs-lzma/[http://deb.grml.org/pool/main/s/squashfs-lzma/].
-
-[NOTE]
-Please use squashfs-lzma-tools 3.3-1 only if you want to remaster Grml releases
-2008.11 or 2009.05.
-
-Using squashfs-tools 1:3.3-7 on the build system
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-squashfs-tools 1:3.3-7 is available through
-http://grml.org/squashfs/squashfs-tools_3.3-7_i386.deb (for x86) or
-http://grml.org/squashfs/squashfs-tools_3.3-7_amd64.deb (for amd64) [both build
-on and for Debian/etch but working with testing and unstable as well].
-
-Please notice that squashfs-tools 1:3.3-7 does NOT support LZMA compression at
-all (so you won't be able to remaster release 2008.11 and 2009.05 using LZMA for
-example). The -nolzma option of mksquashfs is not available therefore (even
-though grml-live will deactivate it for you automatically anyway). Please use
-squashfs-lzma-tools instead.
-
-* Kernel 2.6.23-grml: does NOT work, please use squashfs-tools 1:3.2r2-9exp1
- instead if you still want to use kernel 2.6.23 (not
- recommended)
-* Kernel 2.6.26-grml: works (without LZMA compression only of course!)
-* Kernel 2.6.28-grml: works (without LZMA compression only of course!)
-
-Using squashfs-tools 1:3.2r2-9exp1 on the build system
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-squashfs-tools 1:3.2r2-9exp1 is available via the grml-testing repository,
-running:
-
- # aptitude install squashfs-tools=1:3.2r2-9exp1
-
-or directly via downloading the files
-http://grml.org/squashfs/squashfs-tools_3.2r2-9exp1_i386.deb (for x86) or
-http://grml.org/squashfs/squashfs-tools_3.2r2-9exp1_amd64.deb (for amd64).
-
-Using with ZLIB compression (SQUASHFS_OPTIONS='-nolzma' or -z
-option in grml-live cmdline):
-
-* Kernel 2.6.23-grml: works
-* Kernel 2.6.26-grml: works
-* Kernel 2.6.28-grml: supposed to work (not verified though)
-
-Using with LZMA compression:
-
-* Kernel 2.6.23-grml: works
-* Kernel 2.6.26-grml: does NOT work, please use ZLIB mode instead or switch
- to Debian package squashfs-lzma-tools 3.3-1 (see section above).
-* Kernel 2.6.28-grml: does NOT work, please use ZLIB mode instead or switch
- to Debian package squashfs-lzma-tools 3.3-1 (see section above).
-//////////////////////////////////////////////////////////////////////////////////