Bitbake how to compile a package split

Question

The systemd recipe provides via a package split multiple packages, like systemd-journal-remote, see https://git.openembedded.org/openembedded-core/tree/meta/recipes-core/systemd/systemd_255.1.bb#n397

How do I compile systemd-journal-remote and introspect the build files this package creates under tmp/work/?

bitbake systemd-journal-remote
ERROR: Nothing PROVIDES 'systemd-journal-remote'. Close matches:
    systemd RPROVIDES systemd-journal-remote

How do I run bitbake for just this package? (I am running Yocto Langdale)

Answer 1

Thanks to the Yocto IRC for helping me with this! Here is the summary:

In general:

bitbake builds recipes, not packages

Thus you cannot bitbake a package, you must bitbake the recipe - in my case bitbake systemd - and the package will be included (if enabled).

For systemd-journal-remote my mistake was that I did not set the correct PACKAGECONFIG thus not enabling this optional package:

PACKAGECONFIG:append = " microhttpd"

Afterwards you can add the package to your image recipe:

IMAGE_INSTALL:append = " systemd-journal-remote"