Our dependencies policy is simple:

• We support each major Debian version until one year after the release of the next major version.
• We support each Ubuntu LTS until one year after the release of the next Ubuntu LTS.

In effect, it means that WebKit updates will be buildable for any particular distribution for roughly three years. (We will consider lengthening this support period up to five years if requested by a distribution that intends to provide WebKit security updates during this time.)

This policy applies to runtime dependencies to ensure smooth updates for users. It does not apply to the build toolchain. A compiler other than the default compiler in an otherwise-supported distribution may be required to build.