Debian package gets no changelog

[robertauer]

During the generation of a debian package with the package-debian.mk script, no changelog is generated or included. Lintian (make lint-deb-package) complains about this with the following message:

E: changelog-file-missing-in-native-package
N: 
N:    Each Debian package (which provides a /usr/share/doc/<pkg> directory)
N:    has to install a changelog file. Since this package seems to be a native
N:    Debian package (i.e., there is no upstream source), the file should
N:    usually be installed as /usr/share/doc/<pkg>/changelog.gz
N:    
N:    Note that Lintian may emit this tag if the changelog exists, but it does
N:    not look like a Debian changelog.
N:    
N:    Refer to Debian Policy Manual section 12.7 (Changelog files and release
N:    notes) for details.
N:    
N:    Severity: important, Certainty: certain
N:    
N:    Check: changelog-file, Type: binary