Atmel CAVR-4 Manual De Usuario

CAVR-4

Part 1. Using the compiler

This chapter describes the runtime environment in which an application 

executes. In particular, the chapter covers the DLIB runtime library and how 

you can modify it—setting options, overriding default library modules, or 

building your own library—to optimize it for your application.

The chapter also covers system initialization and termination; how an 

application can control what happens before the function main is called, and 

how you can customize the initialization.

The chapter then describes how to configure functionality like locale and file 

I/O, how to get C-SPY runtime support, and how to prevent incompatible 

modules from being linked together.

For information about the CLIB runtime environment, see the chapter The 

CLIB runtime environment.

The runtime environment is the environment in which your application executes. The 
runtime environment depends on the target hardware, the software environment, and the 
application code. The IAR DLIB runtime environment can be used as is together with 
the IAR C-SPY Debugger. However, to be able to run the application on hardware, you 
must adapt the runtime environment.

This section gives an overview of:

●

The runtime environment and its components

●

Library selection.

The runtime environment (RTE) supports ISO/ANSI C and C++ including the standard 
template library. The runtime environment consists of the runtime library, which 
contains the functions defined by these standards, and include files that define the library 
interface.