View source for Backport packages from DebianGIS

==Setup DEBEMAIL and DEBFULLNAME ==
I assume, you have this ready before you land on this page. But I include them anyway.
Here are the commands that I used to backport packages from DebianGIS (ossim,otb)
mkdir ~/ubuntugis ; cd ubuntugis
<!--
export DEBEMAIL="contact@orfeo-toolbox.org"
export DEBFULLNAME="OTB Team"
-->
<pre>
export DEBEMAIL=your-email-registred-on-launchpad
export DEBFULLNAME="Real Name"
</pre>

Note that a gpg key must be available on launchpad that matches your email given in DEBEMAIL. 

If not when you upload packages it will say "uploaded sucessfully". But in reality the package never gets to ppa.

==setup build evironment==
<pre>
mkdir ~/pbuilder-hooks
cp /usr/share/doc/pbuilder/examples/B90lintian ~/pbuilder-hooks/
sed -i 's/lintian -I --show-overrides/& --pedantic -E/; s/^su /##&/; s/^#su /su /' ~/pbuilder-hooks/B90lintian

#To build package for another distribution. Change trusty to one of (precise, vivid, wily)
sudo cowbuilder --create --distribution=trusty --basepath=/var/cache/pbuilder/base-trusty.cow -hookdir=/home/<user>/pbuilder-hooks/
</pre>

== Update your chroot to add ubuntugis-unstable ppa ==

<pre>
sudo cowbuilder --login --distribution=trusty --basepath=/var/cache/pbuilder/base-trusty.cow -hookdir=/home/<user>/pbuilder-hooks/ --save-after-exec

(you will enter into a shell)

apt-get install -y software-properties-common 

add-apt-repository ppa:ubuntugis/ubuntugis-unstable

apt-get update

</pre>

== Checkout sources==

<pre>
#change ossim to otb, otb-monteverdi depending on your project. It must exist on DebianGIS
debcheckout --git-track='*' git://git.debian.org/git/pkg-grass/ossim.git
</pre>

== change distribution name (precise/trusty/vivid/wily) ==
<pre>
cd ossim
dch  -v 1.8.20+ds-2trusty1 -D trusty "rebuild for trusty
</pre>


You will get something like this:
<pre>
ossim (1.8.20.3+ds-2trusty1) trusty; urgency=medium

  * rebuild for trusty

 -- OTB Team <contact@orfeo-toolbox.org>  Thu, 07 Jan 2016 14:56:59 +0100

</pre>

== Build the package locally ==
<pre>
git-buildpackage --git-pbuilder --git-dist=trusty
</pre>

check if build succeeded. 
You may need to modify debian/control depending on the Ubuntu version and dependencies used by the package.

== Create source.change including FULL Source code using debuild ==

<!-- 
debuild -k0xAEB3D22F -S -sa
-->

<pre>
debuild -k<your-gpg-key-id> -S -sa
</pre>

#Check if there are any serious lintian errors.

==upload this to testing ppa==


<pre>
debrelease --dput -S ppa:ubuntugis/ubuntugis-unstable
</pre>

It is also good to avoid pushing directly to ubuntugis-ubstable and use a staging ppa '''ubuntugis-unstable-staging'''. 
This ppa must have a dependency to '''ppa:ubuntugis/ubuntugis-unstable'''. You can first push to your staging ppa
and If the build suceeded on launchpad, You can copy the package to ubuntugis-unstable via launchpad '''Copy Packages''' interface.
<pre>
debrelease --dput -S ppa:rashadkm/ubuntugis-unstable-staging
</pre>

==References==
http://pkg-grass.alioth.debian.org/policy/packaging.html