The file debian/package.xmlcatalogs lists the local XML catalog files to be installed per package as well as the XML entities in those local XML catalog files that are to be registered in the XML catalog system.
The local XML catalog file entries in that file should be of the form "local;source;dest", where the verbatim "local" indicates this is an entry for a local XML catalog file, "source" indicates where the local XML catalog resides in the source tree, and "dest" indicates the destination location for the local XML catalog under the package build area. "dest" should start with /usr/share/xml/.
The entries for the XML entities to be registered in the package XML catalog file should be of the form "package;type;id;catalog", where the verbatim "package" indicates this is an entry for an XML entity to be registered in the package XML catalog file, "type" indicates the XML entity type (public, system, uri), "id" indicates the XML entity id, and "catalog" indicates the local XML catalog file.
The entries for the XML entities to be registered in the root XML catalog file should be of the form "root;type;id", where the verbatim "root" indicates this is an entry for an XML entity to be registered in the root XML catalog file, "type" indicates the XML entity type (public, system, uri), and "id" indicates the XML entity id.
If an entry for is to be registered identically in the root catalog and the package catalog file, you can use the form "root-and-package;type;id;catalog", where the verbatim "root-and-package" indicates this is an entry for an XML entity to be registered in both the root and package XML catalog files, "type" indicates the XML entity type (public, system, uri), "id" indicates the XML entity id, and "catalog" indicates the local XML catalog file.
XML entity types are described in update-xmlcatalog(8). Using the "root" or "package" commands, a type of "public" will general "delegatePublic" statements in the applicable catalog file. Generally you will want to use the types "public" for any formal public identifiers, and "system" for any files on the local filesystem or URLs. "uri" is only used for non-local files which are not part of the external document subset, e.g., they are not used for entities or DTDs.
dh_installxmlcatalogs automatically adds maintainer script snippets
for the registration and unregistration of the listed XML entities in
the XML catalog system (unless -n is used). A dependency on the
xml-core package will be added to "${misc:Depends}", so be sure to
use that variable in the file debian/control. See
dh_installdeb(1) for an explanation of Debhelper maintainer script
snippets.
Adam Di Carlo <aph@debian.org>