Atmel CAVR-4 Manual De Usuario

CAVR-4

Descriptions of pragma directives

Reference Guide

Note: For portability reasons, some old-style pragma directives are recognized but will 
give a diagnostic message. It is important to be aware of this if you need to port existing 
code that contains any of those pragma directives. For additional information, see the 
AVR® IAR Embedded Workbench Migration Guide.

This section gives detailed information about each pragma directive.

All pragma directives using 

=

 for value assignment should be entered like:

#pragma pragmaname=pragmavalue

or

#pragma pragmaname = pragmavalue

 

#pragma

 

basic_template_matching

#pragma basic_template_matching

Use this pragma directive in front of a template function declaration to make the 
function fully memory-aware, in the rare cases where this is useful. That template 
function will then match the template without the modifications described in Templates 
and data memory attributes, page 116.

#pragma basic_template_matching

template<typename T> void fun(T *);

fun((int _ _near *) 0); // T = int _ _near

#pragma object_attribute

Changes the definition of a variable or a function

#pragma optimize

Specifies type and level of optimization

#pragma pack

Specifies the alignment of structures and union members

#pragma required

Ensures that a symbol which is needed by another symbol is 

present in the linked output

#pragma rtmodel

Adds a runtime model attribute to the module

#pragma segment

Declares a segment name to be used by intrinsic functions

#pragma type_attribute

Changes the declaration and definitions of a variable or 

function

#pragma vector

Specifies the vector of an interrupt function