ARM VERSION 1.2 - Manual (Page 313)

Directives Reference
ARM DUI 0068B Copyright © 2000, 2001 ARM Limited. All rights reserved. 7-31
Examples
Example 7-3 assembles the first set of instructions if NEWVERSION is defined, or the
alternative set otherwise.
Example 7-3 Assembly conditional on a variable being defined
IF :DEF:NEWVERSION
; first set of instructions/directives
ELSE
; alternative set of instructions/directives
ENDIF
Invoking armasm as follows defines NEWVERSION , so the first set of instructions and
directives are assembled:
armasm -PD "NEWVERSION SETL {TRUE}" test.s
Invoking armasm as follows leaves NEWVERSION undefined, so the second set of
instructions and directives are assembled:
armasm test.s
Example 7-4 assembles the first set of instructions if NEWVERSION has the value {TRUE} ,
or the alternative set otherwise.
Example 7-4 Assembly conditional on a variable being defined
IF NEWVERSION = {TRUE}
; first set of instructions/directives
ELSE
; alternative set of instructions/directives
ENDIF
Invoking armasm as follows causes the first set of instructions and directives to be
assembled:
armasm -PD "NEWVERSION SETL {TRUE}" test.s
Invoking armasm as follows causes the second set of instructions and directives to be
assembled:
armasm -PD "NEWVERSION SETL {FALSE}" test.s