I'm using Ubuntu 12.04. I want to unsquash an lzma image. I have done

sudo apt-get squashfs-tools

Now, when I do

unsquashfs <squashed_image_filename>

I get

Filesystem uses lzma compression, this is unsupported by this version

I know my squashed image is lzma. How do I install support for lzma? I have downloaded the squashfs-tools from here: http://sourceforge.net/projects/squashfs/files/

It is my understanding that after extracting that tarball, I need to cd into squashfs4.2/squashfs-tools and edit the Makefile by uncommenting the line LZMA_XZ_SUPPORT = 1. Then I just need to run make.

That does not work for me. I get the error:

gzip_wrapper.c:23:18: fatal error: zlib.: No such file or directory

I think I need to install lzma-devel and xz-devel. I have tried this and been Googling for a couple hours and haven't gotten anywhere or found any solid instructions that show how this should work. Can anyone who has done this help me out? I am new to desktop Linux so if you could be fairly verbose in your instructions that would be appreciated.

  • are you familiar with non-desktop Linux? – qdii Sep 12 '13 at 1:53
  • which version of squashfs-tools have you downloaded? – qdii Sep 12 '13 at 1:57
  • 1
    The Ubuntu packages are lzma-dev or liblzma-dev not "devel". – msw Sep 12 '13 at 2:19
  • @qdii I'm most comfortable with embedded Linux. And I download squashfs-tools 4.2. – boltup_im_coding Sep 12 '13 at 16:57

Thanks to @msw, I figured out the package names for Ubuntu. Thank you! Here's the full steps for someone in the future.

Get source here: http://sourceforge.net/projects/squashfs/

# sudo apt-get install lzma-dev
# sudo apt-get install liblzma-dev
# tar -zxvf squashfs4.2.tar.gz
# cd squashfs4.2/squashfs-tools: Edit Makefile and uncomment this line "LZMA_XZ_SUPPORT = 1"
# make
# sudo make install
# sudo unsquashfs <path/lzma_filename_to_unsquash>

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