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IAR Embedded Workbench for RISC-V 3.40

Library Configuration

In this section:

The Library Configuration options determine which library to use.

GenOptionsLibConfigRISCV_03.png

For information about the runtime library, library configurations, the runtime environment they provide, and the possible customizations, see The DLIB runtime environment.

Configuration file

Displays the library configuration file that will be used. A library configuration file is chosen automatically depending on the project settings. If you have chosen Custom in the Library drop-down list, you must specify your own library configuration file.

Enable thread support in library

Select this option to automatically configure the runtime library for use with threads.

Library low-level interface implementation

Controls the type of low-level interface for I/O to be included in the library. Choose between:

None

No low-level support for I/O available in the libraries. You must provide your own __write function to use the I/O functions part of the library.

Semihosted

Semihosted I/O using RISC-V standard semihosting.

IAR Breakpoint

A proprietary mechanism that enables code running on the target to communicate by halting the application using a breakpoint. This can lead to performance improvements, but it does not work with applications, libraries, and object files that are built using tools from other vendors.

Stdout/Stderr

Determines which method the executing application uses to send text to the stdout and stderr streams. Choose between:

Via semihosting

Text is sent to the stdout and stderr streams using the low-level interface for I/O selected to the left.

Via Trace ITC

Text is sent to the stdout and stderr streams by way of trace output, using the Instrumentation Trace Component present on some SiFive devices.