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Chromium OS‎ > ‎How Tos and Troubleshooting‎ > ‎


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.
  • Upload the package to Localmirror of Google (require Google account).

  • 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

  • Add a dependency to your new package in one of:

    • src/third_party/chromiumos-overlay/virtual/target-chromium-os

      • Includes the package in all images (base/release, developer, test)
    • src/third_party/chromiumos-overlay/virtual/target-chromium-os-dev

      • Includes the package in developer and test images
    • src/third_party/chromiumos-overlay/virtual/target-chromium-os-test

      • Includes the package in test images
    • src/third_party/chromiumos-overlay/virtual/target-chromium-os-sdk

      • Includes the package in the SDK itself
  • Increment the revision number of the 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.


    See Using the dev server.



    Adding a package to the manifest


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










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