Emdebian Quick Start

This is intended to be a quick start guide to Emdebian and emdebian-tools.


You will need to install a package called emdebian-tools, either from Debian repositories or the Emdebian repository. emdebian-tools also brings in apt-cross and dpkg-cross.

$ sudo apt-get install emdebian-tools

This will ask you where you want to build packages, your username for emdebian svn access if you have one and whether you want to use apt-get or aptitude for toolchain package installation. dpkg-cross will offer you the chance to set a default cross-building architecture which saves a lot of typing later on. If you choose None, you will need to add '--arch ARCH' to all the emdebian-tools commands.

After you have the tools, you need to setup an emdebian environment using emsetup. This sets up the ~/.dpkg-cross dir which contains apt caches and configuration files and adds the Emdebian toolchain repository to your apt sources list. apt will then keep your toolchain updated as normal.

New users are recommended to use at least one -v|--verbose option to all emdebian-tools commands.

$ emsetup --verbose --simulate
# check that the output is acceptable, nothing changed yet.
$ emsetup -v

If ~/.dpkg_cross/cross_compile isn't fully configured yet, (hint in the manpage), or you have chosen to have no default cross-building architecture, then emsetup requests the use of --arch to determine the target architecture:

$ emsetup -v -s --arch m68k
# check that the output is acceptable, nothing changed yet.
$ emsetup -a m68k

Once emsetup is complete, you can use apt-get update; apt-get upgrade to ensure you have the latest versions of apt-cross and emdebian-tools as updates are uploaded to Emdebian between Debian versions.

Now you can run emsource <package> to get a debian package, unpack it and apply / generate any emdebian patches. This is directly equivalent to apt-get source in mainstream debian and then applying some patches. emsource tells you where the package has been unpacked - in an SVN tree beneath your emdebian working directory.

Now you can cd into the package dir and do emdebuild to actually build the package. You will need to install any build dependencies as needed with apt-get or aptitude. emdebuild creates a .build log for you. e.g. for a package foo:

cd /path/to/working/dir/target/trunk/f/foo/trunk
emdebuild -v

You could check the [http://linux.codehelp.co.uk/emdebian/man/ Emdebian manpages] and the ["Embedded_Debian"] wiki pages for documentation.

All questions to the debian-embedded mailing list - emdebian developers are also available on IRC. See the [http://www.emdebian.org/ emdebian website] for details.