Pragma equivalent
#pragma
options rtti
Purpose
Generates runtime type identification (RTTI)
information for exception handling and for use by the typeid and dynamic_cast operators.
Syntax

.-rtti---.
>>- -q--+-nortti-+---------------------------------------------><
Usage
For improved runtime performance,
suppress RTTI information generation with the -qnortti setting.
You
should be aware of the following effects when specifying the
-qrtti compiler
option:
- Contents of the virtual function table will be different when -qrtti is
specified.
- When linking objects together, all corresponding source files
must be compiled with the correct -qrtti option specified.
- If you compile a library with mixed objects (-qrtti specified
for some objects, -qnortti specified for others), you may get
an undefined symbol error.
Predefined macros
- __RTTI_ALL__ is defined to 1 when -qrtti is in effect; otherwise,
it is undefined.
- __NO_RTTI__ is defined to 1 when -qnortti is
in effect; otherwise, it is undefined.