A native package is designed to work with Debian rather than general GNU/Linux distributions, many depend directly on specific Debian behaviour or other Debian native tools. svn-buildpackage is one such native package.
With a native package, the contents of the
directory are included in the source tarball (which uses a plain .tar.gz
suffix not the .orig.tar.gz suffix) and no .diff.gz is generated.
The principal marker for a native package is the Debian version string. An upstream package uses:
A native package uses:
Some native packages are compiled from source code and a lot of
these packages use autotools like
autoreconf and make dist. Such
packages can use autotools support to generate a typical GNU or autotools
style tarball with support for EXTRA_DIST and
similar rules in
Makefile.am. This allows the maintainers
to not need to keep generated files (
libtool) in the subversion repository. With this
support, the package can directly control which files are included into
the source for the native package.
To build such packages with svn-buildpackage, mergeWithUpstream can be used even if the Debian version string indicates a native package. The upstream tarball is the one created by the make dist target and the maintainer can choose how to make that tarball available to svn-buildpackage:
Example 3.3. Using a native tarball and mergeWithUpstream
all-local: Makefile ln -sf $(PACKAGE)-$(VERSION).tar.gz $(PACKAGE)_$(VERSION).orig.tar.gz
(Yes, this is an artefact of using mergeWithUpstream. The .orig.tar.gz is not actually used - the Debian version string overrides the merge property.)
$ svn proplist ./debian/ Properties on 'debian': mergeWithUpstream
Example 3.4. Output of using mergeWithUpstream inside a native package
The tarball generated by make dist is located using the origDir property, in this example, set to the top level package directory where make dist would normally create it and where the symlink is also created, as above.
(using langupdate as the example package)
$ svn-buildpackage -us -uc origDir: ./ Complete layout information: buildArea=/opt/working/emdebian/host/trunk/langupdate/build-area origDir=./ tagsDir=/opt/working/emdebian/host/trunk/langupdate/tags tagsUrl=svn+ssh://firstname.lastname@example.org/var/emdebian/svn/current/host/trunk/langupdate/tags trunkDir=/opt/working/emdebian/host/trunk/langupdate/trunk trunkUrl=svn+ssh://email@example.com/var/emdebian/svn/current/host/trunk/langupdate/trunk mergeWithUpstream mode detected, looking for .//langupdate_0.1.1.orig.tar.gz I: mergeWithUpstream property set, looking for upstream source tarball... tar --no-same-owner --no-same-permissions --extract --gzip --file /opt/working/emdebian/host/trunk/langupdate/trunk/langupdate-0.1.1.tar.gz --directory <1 more argument> mv /opt/working/emdebian/host/trunk/langupdate/build-area/tmp-0.15173904069616/langupdate-0.1.1 /opt/working/emdebian/host/trunk/langupdate/build-area/langupdate-0.1.1 svn --force export /opt/working/emdebian/host/trunk/langupdate/trunk /opt/working/emdebian/host/trunk/langupdate/build-area/langupdate-0.1.1 Export complete.
Note how the tarball (created by make dist and located by mergeWithUpstream due to the symlink) is unpacked and then the exported SVN is applied on top. This allows maintainers to test local changes using --svn-ignore.
When make dist is not available, there are still
situations where generated files may need to be included into the source
tarball of the native package. svn-buildpackage supports
the useNativeDist SVN property (applied to the
./debian/ directory) which allows for customised
make native-dist target to be run immediately
after the svn export.
Example 3.5. The useNativeDist property.
svn-buildpackage uses this feature to include
the POT file to aid translators. The custom make rule needs to be defined
in the top level
# adds the POT file to the source tarball native-dist: Makefile po4a-build --pot-only
The native-dist target needs to be idempotent and able to run straight from the SVN export. Any changes made by running the target will be directly reflected in the source tarball. Ensure that no files are removed that would prevent the package being built as a normal Debian package, using only the resulting source package. (e.g. cd into the build-area, unpacking the .dsc with dpkg-source -x and rebuild the package, then remove the test directory.)
The net result is that the resulting source tarball includes the
po/svn-buildpackage.pot generated by the
make native-dist target without needing to
add the generated POT file to SVN (and requiring repeated commits each
time the POT file is timestamped).