Atmel CAVR-4 Manual De Usuario

CAVR-4

Special support for embedded systems

Reference Guide

Use the following command line options to specify the library and the dependency files:

For a list of all prebuilt library object files for the IAR DLIB Library, see Table 15, 
Prebuilt libraries, page 57. The table also shows how the object files correspond to the 
dependent project options, and the corresponding configuration files. Make sure to use 
the object file that matches your other project options.

For a list of all prebuilt object files for the IAR CLIB Library, see Table 26, Prebuilt 
libraries, page 86. The table also shows how the object files correspond to the dependent 
project options. Make sure to use the object file that matches your other project options.

You can set certain options to reduce the library and runtime environment size:

●

The formatters used by the functions 

printf

, 

scanf

, and their variants, see 

Choosing formatters for printf and scanf, page 59 (DLIB) and Input and output, 
page 87 (CLIB).

●

The size of the stack and the heap, see The data stack, page 41, and The return 
address stack, page 43, respectively.

This section briefly describes the extensions provided by the AVR IAR C/C++ Compiler 
to support specific features of the AVR microcontroller.

The AVR IAR C/C++ Compiler provides a set of keywords that can be used for 
configuring how the code is generated. For example, there are keywords for controlling 
the memory type for individual variables as well as for declaring special function types.

By default, language extensions are enabled in IAR Embedded Workbench.

-I\avr\inc

Specifies the include paths

-I\avr\inc\{clib|dlib}

Specifies the library-specific include path. Use clib or 

dlib

 depending on which library you are using.

libraryfile.r90

Specifies the library object file

--dlib_config 

C:\...\configfile.h

Specifies the library configuration file (for the IAR DLIB 

Library only)