unix libraries and patch Post: 1755

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Top Forums UNIX for Dummies Questions & Answers unix libraries and patch Post 1755 by mib on Thursday 29th of March 2001 01:26:14 AM

03-29-2001

Registered User

A library is a file containing several object files, that can be used as a single entity in a linking phase of a program. Normally the library is indexed, so it is easy to find symbols (functions, variables and so on...) in them. For this reason, linking a program whose object files are ordered in libraries is faster than linking a program whose object files are separate on the disk. Also, when using a library, we have fewer files to look for and open, which even further speeds up linking.

Static libraries are just collections of object files that are linked into the program during the linking phase of compilation, and are not relevant during runtime.
Static libraries are commonly named libname.a. The .a suffix refers to archive

dynamic libraries (also called Shared libraries) are lbrararies in which modules can be bound into the executable program at runtime. when the program is started, a program in the system (called a dynamic loader) checks out which shared libraries were linked with the program, loads them to memory, and attaches them to the copy of the program in memory.
Dynamic libraries are commonly named libname.so. The .so suffix refers to shared object.

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LEARN ABOUT SUSE

ldrdf

LDRDF(1)							   Debian Manual							  LDRDF(1)

NAME

       ldrdf - link RDOFF objects and libraries produced by rdflib(1)

SYNOPSIS

       ldrdf [-o output-file] object-file... [-llibrary...]

DESCRIPTION

       ldrdf  is  a  version of unix ld(1) (or DOS LINK) for use with RDOFF files.  It is capable of linking RDOFF objects, and libraries produced
       with the rdflib(1) utility.

       Libraries must be specified with their path as no search is performed.  Modules in libraries are not linked to the program unless they  are
       referred to.

OPTIONS

       -o output-file
	      Specify an output file.  The default output filename is 'aout.rdx'.

       -v     Increase	verbosity level.  Currently 4 verbosity levels are available: default (which only prints error information), normal (which
	      prints information about the produced object, -v), medium (which prints information about what the program is doing, -v -v) and high
	      (which prints all available information, -v -v -v).

       -p     Change  alignment value to which multiple segments combigned into a single segment should be aligned (must be either 1, 2, 4, 8, 16,
	      32 or 256; default is 16).

AUTHORS

       Julian Hall <jules@earthcorp.com>.

       This manual page was written by Matej Vela <vela@debian.org>.

Debian Project							 September 6, 1999							  LDRDF(1)