Compatibility for SCO OpenServer applications on UnixWare is
provided by the UnixWare kernel, and the runtime libraries,
command executables, and system files provided in standard
system directories or in the /OpenServer directories.
Compatibility features for SCO OpenServer applications include the following:
installation tool is provided for installing SCO OpenServer packages on UnixWare 7
(note that custom+ and custom+ format package
options are not supported)
the kernel has been modified to detect a special mark in the header
section of a binary that identifies it as an SCO OpenServer application;
special kernel processing is invoked when this mark is detected; see
some UnixWare commands (those that have an SCO OpenServer version in
/OpenServer/bin) have been modified to use the SCO OpenServer
commands when the OSRCMDS variable is set and exported
in the current process's execution environment
Application (or, binary) compatibility was designed to be automatic.
The UnixWare 7 kernel recognizes SCO OpenServer applications installed
(as well as
installed packages) and can detect
applications compiled for use on SCO OpenServer Release 5.
As such, you should use the same instructions that were provided
with your SCO OpenServer application to install and run
your application on UnixWare 7.
Some applications may experience minor problems, due to
implementation differences on the two systems.
If your SCO OpenServer application does not install or
run correctly on UnixWare 7, try one or more of the steps listed below.
Try setting the following switches:
before installing or running the application.
Setting the OSRCMDS environment variable in the current
process environment causes the shell to invoke the
OpenServer specific version of some commands that are found in
Run the scompat command to change driver (ioctl)
settings for applications that run on the system 'console'.
command to add an identifier to SCO OpenServer
Extensible Linking Format (ELF) binaries that may not have been
detected properly (e.g., applications built using some third party
If your application has problems detecting your System Type, System
Release, or executing installation and/or shell scripts:
Though uncommon, if the application fails during system
"tuning", note which tunables are being set by the application.
Try setting the equivalent UnixWare tunable(s) by hand and then
installing or running the application again.
If your application is a console or "character-based"
application and it doesn't display correctly on your screen:
First try setting your terminal (TERM variable) to another type.
If this doesn't work, try using the SCO OpenServer version of the
terminal information file (terminfo) by copying it from
an SCO OpenServer system.
The files are found under /usr/lib/terminfo in a
subdirectory that matches the value of TERM.
Try setting the poll_delay_compatibility tunable to change
what happens for SCO OpenServer binaries that poll with zero timeout.
Push the ttcompat streams module on all tty-like stacks.
Application compatibility exceptions
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 22 April 2004