compver

The compver(4) package information file defines previous (or future) versions of the package that are compatible with this version. Each line in the file consists of a string defining a version of the package with which the current version is compatible. Because some packages might require installation of a particular version of another software package, compatibility information is extremely crucial. If a package ``A'' requires version ``1.0'' of application ``B'' as a prerequisite, but the customer installing ``A'' has a new and improved version of ``1.3'' of ``B'', the compver(4) file for ``B'' must indicate that the new version is compatible with version ``1.0'' in order for the customer to install package ``A''. The string must match the definition of the VERSION parameter in the pkginfo(4) file of the package considered to be compatible. Here is an example of this file:

Version 1.3
Version 1.0