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Q: Do you really mean I have to read this looongish FAQ list to get my
Q: I have this problem which I absolutely MUST solve NOW! What do I
A: No, you don't need to read all of the FAQ unless you want to (although this is by all means recommended). The questions in this document are listed, as much as possible, in the order they appear when one goes through getting DJGPP, installing it and using it. To quickly find an answer to your question, first look at the Table of Contents. If that doesn't help, try the indices at the end of this manual. You can look up your question either by program name, or by topic name.
If you don't find anything appropriate through the indices, search this FAQ for words which are pertinent to your problem1.
If searching the FAQ didn't help, try the DJGPP archives search, where you can find reports about similar problems and their solutions. If that doesn't help either, try asking the DJGPP gurus.
For those in a real hurry, here are some pointers to the most important topics in this FAQ list:
Here's a brief description of the necessary steps:
chdirthere. Do NOT install DJGPP in a directory called
\devon any drive, or in any of its subdirectories: it won't work!
*.zipfiles preserving the directory structure. On Windows 9X, use an unzip program which supports long file names. On Windows NT, use a DOS unzip program that does not support long file names. A free unzip program
unzip32.exeis available from the DJGPP archives which does the Right Thing on both DOS, Windows 9X and Windows NT, so I recommend using
unzip32.exeto unzip DJGPP.
*.zipfiles. You need to unzip them all from the same directory! I'm told that the Aladdin Expander also automatically renames directories it extracts if a directory by that name already exists; this renaming should be disabled as well. If you have ZipMagic on your machine, disable it, as it also unzips each file into its directory.
AUTOEXEC.BATfile and add these two lines:
set PATH=C:\DJGPP\BIN;%PATH% set DJGPP=C:\DJGPP\DJGPP.ENV
If your top DJGPP directory is other than
change these two lines accordingly!
You can use any text editor to add these two lines. On Windows 95,
Explorer or in
My Computer, then select
Edit from the pop-up menu. On
Windows 98, click
START, then choose, successively, Programs,
Accessories, System Tools, System Information, Tools, System
Configuration, and use the
AUTOEXEC.BAT tab to edit the file. On
DOS, type from the command prompt edit c:\autoexec.bat.
On Windows/NT, use
My Computer->Properties->Environment to edit
the default value of
PATH for the DOS box, and to add a new
DJGPP whose value is set to the full pathname of
DJGPP.ENV, as shown above.
DJGPP.ENVis on a CD-ROM), you need to set an additional environment variable,
TMPDIR, and point it to an existing directory on a writable disk, like this:
TMPDIR set, DJGPP programs which create temporary files
will crash when run from a CD-ROM.
Out of environment space
then enlarge the size of the environment available to
COMMAND.COM. On Windows, add a
/E:2048 option to the
command line that the DOS box runs. On DOS, edit
/E:2048 option on the line that defines the shell, like
SHELL = C:\DOS\COMMAND.COM C:\DOS /E:2048
Your installation is now complete.
Here are several simple commands:
gcc -o cprog.exe cprog.c
gpp -o cxxprog.exe cxxprog.cc
gcc -c cfile1.c cxxfile2.cc
*.oobject files into
gpp -o myprog.exe cfile1.o cxxfile2.o
To compile with optimizations, add the
-O2 switch to the command
line. In addition, use of the
-Wall switch is highly
recommended: it turns on many useful diagnostic messages.
The DJGPP User Guide includes a tutorial introduction for first-time programmers.
Use the DJGPP News group or mailing list. For most questions, you will have your answer in a day or two. See the details on how to ask the gurus.
This depends on your hardware and software. Detailed instructions are in system configuration guidelines.
Check out list of required and optional packages.
See the DJGPP archive search server in this FAQ. The search facility described there is set up by DJ Delorie, and you should use it whenever you have any questions or look for an information on a DJGPP-related subject.