DJGPP is a complete 32-bit C/C++ development system for Intel 80386 (and higher) PCs running DOS. It includes ports of many GNU development utilities. The development tools require a 80386 or newer computer to run, as do the programs they produce. In most cases, the programs it produces can be sold commercially without license or royalties.
Copyright © 1994, 1995, 1996, 1997, 1998, 2000 Eli Zaretskii.
This is the third edition of the FAQ list;
it is consistent with version 2.03 of DJGPP.
This FAQ list may be freely distributed with the DJGPP package or any part thereof, provided that this copyright notice is left intact on all copies.
Table of Contents
- DJGPP FAQ List
- 1 If You Are In a Hurry
- 2 What is DJGPP?
- 3 Hardware and Software Requirements
- 3.1 The minimum system requirements for using DJGPP
- 3.2 Does it really work under OS/2?
- 3.3 Will DJGPP work on Windows/NT?
- 3.4 Can it run under Linux?
- 3.5 Can I run it on a 286?
- 3.6 MS-Windows applications and DJGPP
- 3.7 Machine you would like to buy...
- 3.8 Machine most of us will actually buy ...
- 3.9 How to configure your system for DJGPP
- 3.10 How to get the most RAM for DJGPP programs?
- 4 Where and What to Download?
- 5 The DJGPP Documentation
- 6 When the Compiler (or
Make, orInfo, or ...) Crashes...- 6.1 GCC or some other DJGPP programs hang
- 6.2 GCC says "No DPMI"
- 6.3 Buggy DPMI host or junk in DJGPP.ENV can crash v2.x programs
- 6.4 GCC can crash during optimization
- 6.5 Why does GCC say "cannot exec
as"? - 6.6 What does "Internal compiler error" mean?
- 6.7 What does "Unknown filetype" mean?
- 6.8 Compiler hangs, but only when invoked from Make
- 6.9 Info doesn't like some files
- 6.10 Info Crashes During Startup
- 6.11 Why does Bash crash?
- 6.12 DJGPP programs crash on a ThinkPad
- 6.13 Why does the Linker Access my CD Drive or the network?
- 6.14 Other kinds of trouble
- 6.15 I cannot keep up with the error messages
- 6.16 How to search DJGPP archives
- 6.17 How to ask DJGPP gurus for help
- 7 Compiler and Linker Performance
- 8 Compile-time and Link-time Problems
- 8.1 GCC doesn't find the source files
- 8.2 GCC can't find headers or libraries
- 8.3 GCC can't find C++ headers
- 8.4 GCC barfs on C++-style comments in C programs
- 8.5 How does GCC recognize the source language?
- 8.6 Problems with Objective C
- 8.7 Writing codes fragments which are specific to DJGPP
- 8.8 Undefined references when linking programs
- 8.9 How not to lose your head with all these libraries
- 8.10 DJGPP uses a one-pass linker
- 8.11 Some functions in C++ programs still not found
- 8.12 Unresolved djgpp_first_ctor
- 8.13 C++ programs yield large
.exefile - 8.14 Why are DJGPP
.exefiles so large? - 8.15 Why don't we use DLLs to make programs smaller?
- 8.16 Linker fails to produce the EXE program
- 8.17 Building Allegro or GRX library fails
- 8.18 C++ compiler says "NULL redefined"
- 8.19 C++ exceptions support
- 8.20 How to get GCC to generate assembly code
- 8.21 What's wrong with
sys/movedata.h? - 8.22 How do I create a library of object files?
- 8.23 GCC Cannot find
stubify.
- 9 Running Compiled Programs
- 10 Writing and Running Graphics Programs
- 11 Floating Point Issues and FP Emulation
- 12 Debugging DJGPP Programs
- 12.1 How to run a DJGPP program under debugger
- 12.2 How to begin debugging using the crash dump info
- 12.3 How to debug a graphics program
- 12.4 GDB finds only
.ccsource - 12.5 Can GDB print class members?
- 12.6 GDB cannot list source that was #include'd
- 12.7 GDB cannot display or set static uninitialized variables
- 12.8 Debugging bool data type
- 12.9 Debugging the complex data type
- 12.10 Debuggers choke on some programs ...
- 13 Profiling DJGPP Programs
- 14 Run-time Performance of DJGPP Programs
- 15 Run-Time Memory Issues
- 15.1 How much virtual memory do you have?
- 15.2 It seems
malloc/freedon't affect virtual memory... - 15.3 Failure to get more memory than is physically installed
- 15.4 Memory allocation fails before all memory is used
- 15.5 Memory allocation fails under Windows
- 15.6 Memory allocation peculiarities under Windows 9X
- 15.7 Memory allocation fails under EMM386 or HIMEM
- 15.8 How much memory do parent DJGPP programs leave for their child?
- 15.9 How much stack can I have in DJGPP programs?
- 15.10 Memory-related problems in Windows 98
- 16 Command-line Arguments Handling in DJGPP
- 16.1 Filename wildcards expansion under DJGPP
- 16.2 How to disable filename wildcards expansion
- 16.3 How to pass command-line arguments with quotes or
@ - 16.4 How to pass command lines longer than 126 characters
- 16.5 What is the maximum length of command line under DJGPP
- 16.6 Why Make passes only 126 characters to programs?
- 17 Converting DOS Programs/Libraries to DJGPP
- 17.1 GCC/Gas won't accept valid assembly code ...
- 17.2 Converting between Intel ASM syntax and AT&T syntax
- 17.3 Converted code GP Faults!
- 17.4 Problems with combining assembly and C/C++ modules
- 17.5 I want to use a
.objor.libcode with DJGPP - 17.6 I must use my 16-bit code with DJGPP!!
- 17.7 What should I do with those "near" and "far" declarations?
- 17.8 How to convert _AX pseudo-registers?
- 18 Low-level DOS/BIOS and Hardware-oriented Programming
- 18.1 Got "Unsupported INT 0xNN" calling
int86 - 18.2 How to use buffers with DOS/BIOS services
- 18.3 How to call real-mode functions
- 18.4 How to move data between your program and conventional memory
- 18.5 How to move structs returned by real-mode services?
- 18.6 Fast access to absolute addresses
- 18.7 Accessing absolute address above 1MB
- 18.8 How to make DOS/BIOS call your function
- 18.9 How to hook hardware interrupts
- 18.10 Should I use _go32_XXX or __dpmi_YYY functions?
- 18.11 Hardware interrupt hooking has its subtleties
- 18.12 Inline Assembly code with GCC
- 18.13 Using DMA with DJGPP
- 18.1 Got "Unsupported INT 0xNN" calling
- 19 Legal Aspects
- 20 Getting Help
- 21 Version 2 vs v1.x
- 22 Miscellany
- 22.1 Problems with using RHIDE.
- 22.2 Unzipping complains about duplicate/invalid files.
- 22.3 How to change a DJGPP package?
- 22.4 Where to find DJGPP packages?
- 22.5 How to create symbolic links to programs
- 22.6 Where to find the DPMI specification?
- 22.7 The DJGPP Web site.
- 22.8 Where to upload your contributions to DJGPP
- 22.9 DJGPP as cross-compiler
- 22.10 GCC says "garbage at end of number"
- 22.11 What should sizeof (struct xyzzy) return?
- 22.12 C++ doesn't pack structs!
- 22.13 How to avoid "Abort, Retry, Fail" messages
- 22.14 What is that
go32-v2.exeprogram? - 22.15 What is DXE?
- 22.16 Long Filenames Don't Work!
- 22.17 Make says "missing separator"
- 22.18 Make says "
foohas modification time in the future" - 22.19 How to Set Up a Dual DOS/Windows Installation
- 22.20 What is in that
zoneinfodirectory? - 22.21 The dark secrets of the /dev/ directory...
- 22.22 How about switching to ELF as DJGPP's object file format?
- 22.23 How to produce random numbers?
- 22.24 What are all these buzzwords I see?
- 22.25 What should the
mainfunction return in a C/C++ program? - 22.26 Rebooting the PC from a DJGPP program
- 22.27 Delaying execution for short periods of time
- 22.28 CGI programs and DJGPP
- 22.29 Why Do I Get EOF From
stdin? - 22.30 Generating the FAQ in your favorite format
- 23 About this FAQ
- 24 Topic Index
- 25 Program Index
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