Mozilla Firefox Trunk

You can access several versions of Firefox at any time. One source set is the downloadable source files, which is not the most current source it might be as much as a month out of date). However, you can get the most current source from Concurrent Versions System (CVS).

Tip

This chapter talks about building Firefox. To build Thunderbird, the same process is used but you simply rename as necessary so that CVS retrieves the Thunderbird source instead of Firefox. Plus, you must modify your .mozconfig file.