Contents

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Overview of GNUPro Toolkit 1

Using the Documentation 3

Configurable Operating Systems 4

Importance of Configuring 4

Embedded Cross-configurations 6

Installing GNUPro Toolkit 7

Install on UNIX or Linux Systems with CD 8

Setting the PATH Environment Variable 10

install-cli Options 10

Install on Microsoft Windows Systems with CD 12

How to Report Problems 15

Basics of the Tools 17

Compiler and Development Tools 18

Libraries 18

Auxiliary Development Tools 19

gcc and g++, the GNU Compilers 20

cpp, the GNU Preprocessor 21

ld, the GNU Linker 22

make, the GNU Recompiling Tool 23

gdb, the Debugging Tool 26

Insight, a GUI Debugger 27

as, the GNU Assembler 27

newlib and libstdc++, the GNU Libraries 29

Using Cygwin to Port UNIX Applications to Windows 29

RedBoot for Remote Debugging 30

Using info, the Documentation Tools 31

Reading info Documentation 31

Developing with GNUPro Toolkit 33

What Embedded Development Means 34

Tools, Toolchains and Usage 35

The C Run-time Environment (crt0) 36

crt0, the Main Startup File 37

The Linker Script 40

Using Cygwin 43

Before Using Cygwin 44

Using GCC with Cygwin 49

Debugging Cygwin Programs 49

Environment Variables for Cygwin 50

Using RedBoot for Remote Debugging 53

Debug with Insight 54

Selecting and Examining a Source File 54

Setting Breakpoints and Viewing Local Variables 56

Setting Breakpoints on Multiple Threads 59

Rebuilding from Source 63

Configuring the Location of the Tools 64

Configuring with an Embedded Target 64

Preparing to Rebuild Source Code Files 65

Building and Installing Binaries 66

Single Host/Target Builds 66

Multiple Host Builds 66

Rebuilding When Compiling with Microsoft Windows NT Systems 67

Troubleshooting the Rebuilding Process 69

configure Problem Reporting 70

build Problem Reporting 70

Patching 70

Appendices

General Licenses and Terms for Using GNUPro Toolkit 75

Licensing Terms 75

GNU General Public License 76

How to Apply These Terms to Your New Programs 80

GNU Lesser General Public License 81

How to Apply These Terms to Your New Libraries 87

Tcl/Tk Tool Command Language and Windowing Toolkit License 88

Glossary 103