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 depend(F)                       19 June 1992                       depend(F)


 Name

    depend - software dependencies files

 Description

    depend is an ASCII file used to specify information concerning software
    dependencies for a particular package.  The file is created by a software
    developer.

    Each entry in the depend file describes a single software package.  The
    instance of the package is described after the entry line by giving the
    package architecture and/or version.  The format of each entry and subse-
    quent instance definition is:

       type pkg name
               (arch)version
               (arch)version
               ...

    The fields are:

    type          Defines the dependency type.  Must be one of the following
                  characters:

                  P    Indicates a prerequisite for installation, for exam-
                       ple, the referenced package or versions must be
                       installed.

                  I    Implies that the existence of the indicated package or
                       version is incompatible.

                  R    Indicates a reverse dependency.  Instead of defining
                       the package's own dependencies, this designates that
                       another package depends on this one.  This type should
                       be used only when an old package does not have a
                       depend file but it relies on the newer package
                       nonetheless.  Therefore, the present package should
                       not be removed if the designated old package is still
                       on the system since, if it is removed, the old package
                       will no longer work.

    pkg           Indicates the package abbreviation.

    name          Specifies the full package name.

    (arch)version Specifies a particular instance of the software.  A version
                  name cannot begin with a left parenthesis.  The instance
                  specifications, both arch and version, are completely
                  optional but must each begin on a new line that begins with
                  white space.  A null version set equates to any version of
                  the indicated package.

 Example

    Here is a sample depend file:

       I msvr Messaging Server
       P ctc Cartridge Tape Utilities
       P dfm Directory and File Management Utilities
       P ed Editing Utilities
       P ipc Inter-Process Communication Utilities
       P lp Line Printer Spooling Utilities
       P shell Shell Programming Utilities
       P sys System Header Files
                       Release 3.0
       P sysadm System Administration Utilities
       P term Terminal Filters Utilities
       P terminfo Terminal Information Utilities
       P usrenv User Environment Utilities
       P uucp Basic Networking Utilities
       P x25 X.25 Network Interface
                       (i386) Issue 1 Version 1
                       (i386) Issue 1 Version 2
       R cms Call Management System