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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
Utilities & Libraries
C Library Reference
Manifests

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
- Quickstart Guide
- System Architecture
  The System Architecture guide accompanies the QNX OS and is intended for both application developers and end-users.
- OS Components & Operations
- Graphics
- Programming
- System Security Guide
  The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX OS system and developers who want to create a QNX OS resource manager free from vulnerabilities.
- Utilities & Libraries
  - C Library Reference
    - What's in a Function Description?
    - Manifests
    - Character Sets
    - A
    - B
    - C
    - D
    - E
    - F
    - G
    - H
    - I
    - J
    - K
    - L
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    - P
    - Q
    - R
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    - T
    - U
    - V
    - W
    - X
    - Y
    - Z
    - Full Safety Information
    - Glossary
  - Devctl and Ioctl Commands
  - JSON Library Reference
  - PAM Reference
  - QNX Helpers Developer's Guide
    These libraries provide QNX helpers, including helpers that assist with logging, string conversion, and number and type sizes.
  - SPI Framework Technote
  - QNX Cryptography Library
    The QNX Cryptography Library (qcrypto) is a flexible cryptography framework that allows you to choose which cryptography provider responds to requests on a per-process basis.
  - QNX devcrypto Service
  - Utilities Reference
  - WPA Control Interface Reference
    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
- Migrating to QNX OS 8.0
QNX Software in the Cloud
QNX Software in the Cloud enables developers to use the QNX OS in the Amazon cloud environment.
QNX Toolkit for Visual Studio Code
This User's Guide describes the QNX^® Toolkit for Visual Studio Code. The guide introduces you to the QNX Toolkit by explaining the QNX development environment and how to build, run, and debug your QNX^® Operating System (OS) applications and systems.
QNX Hypervisor User's Guide
This User's Guide explains the QNX hypervisor architecture and provides instructions for installing and running a QNX Hypervisor system, changing system components and configuration, and using hypervisor features such as virtual devices (vdevs).
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

Manifests

QNX SDP8.0C Library ReferenceAPIDeveloper

Manifests are used by C/C++ for compile-time changes or inspection. Here are the defined items:


Manifest	Header file to include	Description
__BEGIN_DECLS	sys/platform.h	Denotes start of C code for a C++ compiled program.
__BIGENDIAN__	sys/platform.h	Code is compiled for a big-endian target.
__CHAR_SIGNED__	sys/platform.h	Code is compiled with the char type defaulting to signed.
__CHAR_UNSIGNED__	sys/platform.h	Code is compiled with the char type defaulting to unsigned.
__END_DECLS	sys/platform.h	Denotes end of C code for a C++ compiled program
__INT_BITS__	sys/platform.h	The number of bits in the int datatype.
__LITTLEENDIAN__	sys/platform.h	Code is compiled for a little-endian target.
__LONG_BITS__	sys/platform.h	The number of bits in the long datatype.
_NTO_VERSION	sys/neutrino.h	Deprecated. A version number times 100 (e.g., 2.00 is 200).
__PTR_BITS__	sys/platform.h	The number of bits in a void pointer.
__OPTIMIZE__	sys/platform.h	Code is compiled for optimization.
__QNX__	N/A	The target is for a QNX operating system (QNX OS). Its value represents the version number times 100 (e.g., 8.0 is 800). See Including OS-specific code in the QNX OS Programmer's Guide.
__QNXNTO__	N/A	Deprecated. The target is the QNX Neutrino RTOS.

Page updated: August 11, 2025