24

Chapter 3. Command Line Options

3.16. Control Warnings:

 W

,

 warn

,

 no warn

,

 fatal warnings

as

should never give a warning or error message when assembling compiler output. But programs

written by people often cause

as

to give a warning that a particular assumption was made. All such

warnings are directed to the standard error file.

If you use the

 W

and

 no warn

options, no warnings are issued. This only affects the warning

messages: it does not change any particular of how

as

assembles your file. Errors, which stop the

assembly, are still reported.

If you use the

 fatal warnings

option,

as

considers files that generate warnings to be in error.

You can switch these options off again by specifying

 warn

, which causes warnings to be output as

usual.

3.17. Generate Object File in Spite of Errors:

 Z

After an error message,

as

normally produces no output. If for some reason you are interested in

object file output even after

as

gives an error message on your program, use the

 Z

option. If there

are any errors,

as

continues anyways, and writes an object file after a final warning message of the

form

n errors, m warnings, generating bad object file.