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diff --git a/ebuild-writing/functions/src_unpack/rpm/text.rst b/ebuild-writing/functions/src_unpack/rpm/text.rst new file mode 100644 index 0000000..bbb4a53 --- /dev/null +++ b/ebuild-writing/functions/src_unpack/rpm/text.rst @@ -0,0 +1,50 @@ +RPM Sources +=========== + +If a package is supplied as an .rpm file, you should: + +.. CODESAMPLE rpm-1.ebuild + + +If you don't need to do anything in the unpack phase, then you are finished as +the ``rpm.eclass`` exports a default ``src_unpack`` that will unpack the rpm +files. + +If you do need to apply patches then override ``src_unpack`` in a manner such +as: + +.. CODESAMPLE rpm-2.ebuild + +.. Note:: ``${A}`` can contain non-rpm files since the rpm eclass will call + the normal ``unpack`` function for files that are not in the rpm format. + + +Notes on Using ``rpm.eclass`` +----------------------------- + +There are two ways to unpack a rpm file -- using the ``rpmoffset`` program from +``rpm2targz`` and ``cpio``, or by using ``rpm2cpio`` from ``app-arch/rpm``. +Normally, for unpacking an rpm file, installing the entire rpm application is +overkill. Because of this, the eclass will only use ``rpm2cpio`` if ``rpm`` is +already installed on the system. If you want to force the eclass to only use +the rpm offset method, set ``USE_RPMOFFSET_ONLY=1``. + +Another issue that might arise is that ``rpmoffset`` and ``cpio`` are not able +to unpack the rpm file correctly. If this occurs, then you need to add +``app-arch/rpm`` to the ``DEPEND`` variable so that ``rpm2cpio`` will be used +instead. + +Example RPM Handling +-------------------- + +Here is an ebuild snippet that is based upon the fetchmail source rpm from SuSE +9.2. The ebuild snippet is complete enough to work with the ``ebuild unpack`` +command. The ebuild will download the source file from the OSU SuSE mirror, +unpack the file and apply the included patches. The filename should be +``suse-fetchmail-6.2.5.54.1.ebuild``. + +.. CODESAMPLE rpm-3.ebuild + +Completion of the ebuild left as exercise to the reader. + +.. vim: set ft=glep tw=80 sw=4 et spell spelllang=en : .. |