Adding a New Package

Here's how you add a new package to Chromium OS:
  1. Create an ebuild file for your package src/third_party/chromiumos-overlay/ .  See the ebuild(5) man page (from within your development chroot) and the other ebuilds in src/third_party/portage and src/third_party/chromiumos-overlay
    • for example, the ebuild file of systemtap is placed in src/third_party/chromiumos-overlay/dev-util/systemtap.
  2. Upload the package to Localmirror of Google (require Google account).
  3. Create a README.chromiumos file that describes the purpose of the package. If your package is a third-party package, document any custom patches that have been applied
  4. Add a dependency to your new package in one of:
    • src/third_party/chromiumos-overlay/chromeos-base/chromeos 
    • src/third_party/chromiumos-overlay/chromeos-base/chromeos-dev (if your package is intended for 'developer' images)
  5. Increment the revision number of the chromeos-base ebuild that you modified so that incremental builds recognize the changes.
The source code of the package shouldn't be placed in the src/. emerge will download the package and store it in /var/lib/portage/distfiles-target/, and the code is compiled in /build/tegra2_seaboard/tmp/portage/. When porting a new package, we can put the package in /var/lib/portage/distfiles-target/.
Once you're done, make sure your changes to do not break the build system. Then create a changelist and get it reviewed (see Contributing Code for details).

Adding a package to a running Chromium OS system

The easiest way to add a new package, or update a package is to start devserver on the build host, and use gmerge to build the package and install the results on the target device.

Adding a package to the manifest

See the Git server-side information site for information about how to add your package to a manifest.