MPLAB XC8 C Compiler User’s Guide for PIC MCU

Notice to Development Tools Customers

1.1 Conventions Used in This Guide

1.2 Recommended Reading

2 Compiler Overview

2.1 Device Description

2.2 C Standards

2.3 Hosts and Licenses

2.4 Conventions

2.5 Compatible Development Tools

3.1 Installing and Activating the Compiler

3.2 Invoking the Compiler

3.3 Writing Source Code

3.4 Getting My Application To Do What I Want

3.5 Understanding the Compilation Process

3.6 Fixing Code That Does Not Work

4 Command-line Driver

4.1 Invoking The Compiler

4.2 The Compilation Sequence

4.3 Runtime Files

4.4 Compiler Output

4.5 Compiler Messages

4.6 Option Descriptions

4.7 MPLAB X IDE Integration

5 C Language Features

5.1 C Standard Compliance

5.2 Device-Related Features

5.3 Supported Data Types and Variables

5.4 Memory Allocation and Access

5.5 Operators and Statements

5.6 Register Usage

5.10 Main, Runtime Startup and Reset

5.12 Mixing C and Assembly Code

5.13 Optimizations

5.14 Preprocessing

5.15 Linking Programs

6 Macro Assembler

6.1 MPLAB XC8 Assembly Language

6.2 Assembly-Level Optimizations

6.3 Assembly List Files

7.2 Psects and Relocation

8.1 Archiver/Librarian

9 Library Functions

9.1 Library Example Code

9.2 <xc.h> Device-specific Functions

10 Error and Warning Messages

10.1 Messages 0 Thru 499

10.2 Messages 500 Thru 999

10.3 Messages 1000 Thru 1499

10.4 Messages 1500 Thru 1999

10.5 Messages 2000 Thru 2499

11 Implementation-Defined Behavior

11.2 Translation

11.3 Environment

11.4 Identifiers

11.5 Characters

11.7 Floating-Point

11.8 Arrays and Pointers

11.10 Structures, Unions, Enumerations, and Bit-Fields

11.11 Qualifiers

11.12 Pre-Processing Directives

11.13 Library Functions

11.14 Architecture

12 Document Revision History

Microchip Information

The Microchip Website

Product Change Notification Service

Customer Support

Product Identification System

Microchip Devices Code Protection Feature

Quality Management System

Worldwide Sales and Service

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.