If you have downloaded a binary version of MySQL that includes support for Berkeley DB, simply follow the usual binary distribution installation instructions.

If you build MySQL from source, you can enable BDB support by invoking configure with the --with-berkeley-db option in addition to any other options that you normally use. Download a MySQL 5.0 distribution, change location into its top-level directory, and run this command:

shell> ./configure --with-berkeley-db [other-options]

For more information, Section 2.16, “Installing MySQL on Unix/Linux Using Generic Binaries”, and Section 2.17, “Installing MySQL from Source”.