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SAS/C Cross-Platform Compiler and C++ Development System User's Guide, Release 6.50


Using the ar370 Utility

The ar370 archive utility is invoked directly with the following command: 

ar370 cmds [posname] libname [fname...]
The cmds argument must be specified, and consists of an optional -, followed by one of the command characters d , m , r , x , or t . ( t may be specified with any other command.) Optionally, you can concatenate the command character with one or more of the command modifier characters a , b , e , j , q , or v . The command and command modifier characters are described later in this section.

The optional posname argument specifies the name of a specific archive member and is required only if one of the relative positioning command modifiers is specified.

The libname argument specifies the filename of the archive library and must be present. By convention, an extension of .a is used to identify archive library files.

Each fname argument specifies the name of a file to be added or replaced, or the name of an archive member to be manipulated. Member names must be specified exactly as they appear in the archive.

One common use of the ar370 archive utility is to replace or add files to an archive. In the following example, the utility is invoked to replace the members run.txt and walk.txt in the ar370 archive named zoom.a . Verbose output is requested. 

ar370 rv zoom.a run.txt walk.txt

If either run.txt or walk.txt does not exist in the zoom.a archive, it is added to the archive by the r command character.

When performing an add or replace, the name of the archive member is generally derived from the file name. You can specify an alternate name for the archive member by following the complete input file name with the replace-as operator `=' and the alternate name for the archive member. For example: 

ar370 r mylib this.text.a1=that.obj
This command stores the file this.text.a1 in the archive mylib with the member name that.obj .
Command Characters

The following command characters are recognized:

Command Character Description
d
deletes the specified members from the archive.
m
moves the specified members. By default, the members are moved to the end of the archive. If an optional positioning character (a or b) is used, the posname argument must be present, specifying that the named members are to be placed after (a) or before (b) posname. Note that the members are moved in the order of their appearance in the archive, not in the order specified on the command line. This means that when a number of members are moved, they remain in the same order relative to each other as before the move.
r
replaces the specified files in the archive, creating new members for any that are not already present. If an optional positioning character (a or b) is used, the posname argument must be present to specify that the new members are to be placed after (a) or before (b) the posname member. In the absence of a positioning character, new members are appended at the end. When the r command character is used, the ar370 archive utility creates an archive file if it does not already exist. If no files are specified by fname arguments, the utility creates an empty archive.
t
types a description of the contents of the archive. If no member names are specified, all members in the archive are described by name. If any member names are specified, information about only those members appears. Additional information is produced when either the ( v ) or ( e ) command modifiers is specified.
x
extracts the named archive members. If no names are specified, all members of the archive are extracted. The member name is used as the name of each extract output file. The extract command does not alter or delete entries from the library.

Optional Modifier Characters

The following optional modifier characters are recognized:

Modifier Characters
Description
a
Positions the members to be moved or replaced after the member specified by the posname argument. If you specify a , you must specify posname.
b
Positions the members to be moved or replaced before the member specified by the posname argument. If you specify b , you must specify posname.
e
Enumerate: Lists the defined symbols for the members specified for the type command. This modifier is meaningful only when used with the type ( t ) command. When used with the verbose ( v ) command modifier, all symbols (defined and referenced) in the specified members are displayed.
j
Japan or uppercase: Produces all output in uppercase ( japan ).
q
Quick: Processes members of existing archives more quickly. This option keeps ar370 from reprocessing every member in the archive. It greatly reduces the amount of I/O needed to add, replace, delete, and move members in an archive, since no work file is used. You should use this option with care, however, because an existing library containing data could be destroyed if space in the data set runs out. Prior to using ar370 with the q option, we recommend that you back up the archive so that you will not lose your data in the event that the original dataset is destroyed.

Note:   The q command modifier causes the member order to be maintained only in the symbol table. This avoids the I/O needed to reposition the actual objects within the archive. Only the order of members in the symbol table is relevant to the linker. Therefore, the order of the actual object files in the archive does not always have to be maintained. If an archive has been modified by ar370 and is subsequently changed without the q option, the actual order of the objects within the archive is changed to match the order of the members in the symbol table.  [cautend]


v
Verbose: When used with t , the v command modifier produces a long listing of information for each specified member in the form of name, date, size, and number of symbols. If no members are specified, a listing is produced for all members in the archive.When used with the d

, m

, or x

modifiers, the v

modifier causes the ar370

archive utility to print each command modifier character and the member name associated with that operation. For the r

modifier, the ar370

archive utility shows an a

if it adds a new file or an r

if it replaces an existing member. The verbose modifier also produces the ar370

archive utility's title and copyright notice.

Combinations of Commands and Modifiers

Only the combinations of commands and command modifiers shown in the following table are meaningful.

Command and Command Modifier Combinations
Command Accepted Modifiers and Commands
d
e , f , j , q , t , v
m
e , f , j , q , t , v and a | b
r
e , f , j , q , t , v and a | b
t
d , e , f , j , m , r , v , x
x
e , f , j , t , v


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Copyright © 1998 by SAS Institute Inc., Cary, NC, USA. All rights reserved.