software dependencies files
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
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 subsequent instance definition is:
type pkg name
The fields are:
Defines the dependency type.
This must be one of the following:
Indicates a prerequisite for installation, for example, the referenced package
or versions must be installed.
Implies that the existence of the indicated package or version is
incompatible. See also the X tag.
Implies that the existence of the indicated package or version is incompatible.
This tag should be used instead of the I tag.
Indicates a reverse dependency.
Instead of defining the package's own
dependencies, this designates that another package depends on this one.
type should be used only when an old package does not have a
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.
Indicates a superceding dependency. It should be used when an earlier package has been
superceded by the current package.
Indicates the package abbreviation.
Specifies the full package name.
Differences between versions
For SCO OpenServer Release 5.0.5a and later releases,
this file is identical to the UnixWare 7 command
of the same name.
For earlier SCO OpenServer releases,
two optional fields are supported,
so the format is:
type pkg name
These fields specify a particular instance of the software.
version cannot begin with a left parenthesis.
Both the arch and version specifications
are completely optional but, if used,
must each begin on a new line
that begins with white space.
A null version set equates to any version of the indicated package.
Here is a sample depend file
(for the NFS package):
P base Base System
P nsu Networking Support Utilities
P inet Internet Utilities
P rpc Remote Procedure Call Utilities
P dfs Distributed File System Utilities
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003