Installation guide

Produces subset images, inventories, and control ﬁles from the input

ﬁles that have been transferred from your source directory. The utility

also generates data ﬁles that make up the media master in the output

directory. This utility is the same on DIGITAL UNIX and ULTRIX

systems.

• setld

Installs software on the user’s system. The setld command can install

software from the following distribution media:

– Data disks, including CD−ROM optical discs

– TK50 tapes

– MT9 tapes

On a DIGITAL UNIX system, the setld command resides in the

/usr/sbin directory. On an ULTRIX system, the command is in the

/etc directory.

Unlike the ULTRIX setld command, the DIGITAL UNIX setld command

does not install software into a Diskless Management Services (DMS) area.

The DMS software is not provided on DIGITAL UNIX systems.

See the Programming Support Tools manual for descriptions of the program

installation tools and the process of building setld-compatible kits.

6.6 Shared Libraries

The DIGITAL UNIX system provides shared libraries as part of the

programming environment. Shared libraries are libraries linked in a ﬁle

organized like a demand-paged executable program. Like other programs,

the libraries contain data and text sections and export entry points or data

objects. Multiple processes can use the entry points simultaneously or use

the data objects (each process has a private copy of the data objects).

Unlike most programs, shared libraries contain no ﬁxed-base address.

Shared libraries contain symbol and relocation information. When you link

your application with a shared library, the executable application does not

contain the library routines; instead, the application contains the

information it needs to load the shared library at startup time and to

access the shared routines and private data at execution time.

The following shared libraries are elements of all DIGITAL UNIX systems:

libDXm.so libc.so libids.so

libMrm.so libc_r.so libids_nox.so

libX11.so libchf.so libimg.so

6–12 Overview of the DIGITAL UNIX Programming Environment