IAR C/C++ Development Guide - Compiling and Linking for Arm Cores - Edition 30

Sep 15, 2026

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IAR C/C++ Development Guide provides build-tool guidance for embedded developers targeting Arm cores. It covers compiling and linking workflows using the IAR Embedded Workbench, including developing applications, data storage and function usage, and linking with I LINK and the runtime environment. Reference sections detail compiler and linker options, data representation, pragma and preprocessor behavior, intrinsic functions, the standard library interface, linker configuration and section usage, plus implementation-defined behavior and utilities to support correct, efficient builds.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages736

Reading Time30 h 55 min

AccessFree to download

Compiling and Linking

Brief contents

Part 1. Using the build tools

Part 2. Reference information

Index

IAR C/C++ Development Guide Compiling and Linking for Arm Limited’s Arm® Cores DARM-30 COPYRIGHT NOTICE © 1999–2023 IAR Systems AB. No part of this document may be reproduced without the prior written consent of IAR Systems AB. The software described in this document is furnished under a license and may only be used or copied in accordance with the terms of such a license. DISCLAIMER The information in this document is subject to change without notice and does not represent a commitment on any part of IAR Systems. While the information contained herein is assumed to be accurate, IAR Systems assumes no responsibility for any errors or omissions. In no event shall IAR Systems, its employees, its contractors, or the authors of this document be liable for special, direct, indirect, or consequential damage, losses, costs, charges, claims, demands, claim for lost profits, fees, or expenses of any nature or kind. TRADEMARKS IAR Systems, IAR Embedded Workbench, Embedded Trust, C-Trust, IAR Connect, C-SPY, C-RUN, C-STAT, IAR Visual State, IAR KickStart Kit, I-jet, I-jet Trace, I-scope, IAR Academy, IAR, and the logotype of IAR Systems are trademarks or registered trademarks owned by IAR Systems AB. Microsoft and Windows are registered trademarks of Microsoft Corporation. Arm, Cortex, Thumb, and TrustZone are registered trademarks of Arm Limited. EmbeddedICE is a trademark ofArm Limited. uC/OS-II and uC/OS-III are trademarks of Micrium, Inc. CMX-RTX is a trademark of CMX Systems, Inc. Azure RTOS ThreadX is a trademark of Microsoft Corporation. RTXC is a trademark of Quadros Systems. Fusion is a trademark of Unicoi Systems. Renesas Synergy is a trademark of Renesas Electronics Corporation. Adobe and Acrobat Reader are registered trademarks of Adobe Systems Incorporated. All other product names are trademarks or registered trademarks of their respective owners. EDITION NOTICE Thirtieth edition: November 2023 Part number: DARM-30 This guide applies to version 9.50.x of IAR Embedded Workbench® for Arm. Internal reference: BB16, csrct2010 . 1, V_ 110411, IJOA. IAR C/C++ Development Guide 2 Compiling and Linking for Arm Brief contents Tables ..................................................................................................................... 39 Preface .................................................................................................................... 41 Part 1. Using the build tools ...................................................49 Introduction to the IAR build tools ........................................................ 51 Developing embedded applications ........................................................ 59 Data storage ...................................................................................................... 73 Functions ............................................................................................................... 77 Linking using I LINK ........................................................................................ 95 Linking your application .............................................................................. 113 The DLIB runtime environment ........................................................... 129 Assembler language interface ................................................................. 171 Using C ................................................................................................................ 199 Using C++ .......................................................................................................... 209 Application-related considerations ....................................................... 219 Efficient coding for embedded applications ...................................... 245 Part 2. Reference information ...........................................265 External interface details ............................................

FAQs

What toolchain and version does this guide apply to?

The guide applies to version 9.50.x of IAR Embedded Workbench for Arm and focuses on compiling and linking workflows.

Which parts of the guide explain build-tool usage?

Part 1 covers using the IAR build tools, including developing embedded applications, runtime environment topics, and linking using I LINK.

What reference topics are included for configuration and language behavior?

Part 2 includes compiler options, linker options, data representation, pragma directives, preprocessor details, intrinsic functions, linker configuration, and implementation-defined behavior for Standard C and C++.

Sep 15, 2026

Upload by Paura