There are two ways (at least) to rebuild Ubuntu package from the source.
Using Ubuntu diff file and dpkg-buildpackage
- Download source from Ubuntu repository.
- Download Ubuntu diff file and apply it:
patch -p1 < ubuntu.diff
- Build package:
Using .dsc file and debuild
- Download .dsc file
- Run following command:
dpkg-source -x file.dsc
Note, sometimes the archive with sources should be presented in the same directory!
- Go to source directory and start building:
In both cases the development packages should be installed first:
sudo apt-get install build-essential devscripts