From: "John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Newbie needs help...
Date: Mon, 30 Dec 1996 18:40:36 -0800
Organization: Two pounds of chaos and a pinch of salt
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Message-ID: <32C87D24.7B4A@cs.com>
References: <5a8kmr$7lo AT mn5 DOT swip DOT net>
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To: djgpp AT delorie DOT com
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Johan Levin wrote:
> 
> I have unzipped all files needed into their correct subdirectories.
> (The files I installed are these:

You did not get the latest versions.  DJGPP 2.00 should still work fine,
but for maximum service and support, get the 2.01 distributions.  The
different files are noted below:

v2/faq202b.zip
v2misc/csdpmi3b.zip
v2misc/pmode11b.zip
v2gnu/bnu252b.zip		bnu27b.zip
v2/djdev200.zip			djdev201.zip
v2/djtst200.zip			djtst201.zip
v2gnu/gcc272b.zip		gcc2721b.zip
v2gnu/txi360b.zip		txi390b.zip
v2gnu/gpp272b.zip		gpp2721b.zip
v2gnu/lgp271b.zip
v2gnu/obc272b.zip		obc2721b.zip
v2gnu/gdb412b.zip		gdb416b.zip
v2apps/rhideb.zip		rhide10b.zip
v2gnu/mak373b.zip		mak375.zip

> Anyway, now what. Do I have to alter my environment variables
> (At least the path should be changed I think.) What else do
> I have to do?

What you should have done is get the 'readme.1st' file from the same
place as the rest of the DJGPP files and read it thoroughly.  It (and
the FAQ) explicitly state how you need to set up your environment.

In summary, you must make the following modifications to your
AUTOEXEC.BAT:

  Add the C:\DJGPP\BIN directory to your PATH, *BEFORE* the directories
of any other compilers on your system.
  Add the line, "SET DJGPP=C:\DJGPP\DJGPP.ENV".

Of course, if you put DJGPP somewhere else, change the above directories
accordingly.

> I have looked at the FAQ but I found no help.

Try section 8.1.

> What files include information about how to use the compiler?
> (An example would help.)

v2/readme.1st
v2/faq202b.zip

From "readme.1st":

Compilation
-----------

GCC is a command-line compiler, which you invoke from DOS command
line.  To compile and link a single-file C program, use a command like
this:

	gcc myfile.c -o myfile.exe -lm

The -lm links in the lib/libm.a library (trig math) if needed.  (Link
order is significant, so if you need libm.a, always put `-lm' at the
end of the command line.)

To compile a C or C++ source file into an object file, use this
command line:

	gcc -c -Wall myfile.c  (for C source)
  or
	gcc -c -Wall myfile.cc (for C++ source)

This produces the object file myfile.o.  The `-Wall' switch turns on
many useful warning messages which is especially beneficial for new
users of GCC.  (Other C++ extensions, like .cpp, are also supported,
see section 8.4 of the FAQ for details.)

To link several C object files into an executable program, use a
command line such as this:

	gcc -o myprog.exe mymain.o mysub1.o mysub2.o

This produces `myprog.exe' which can be run from the DOS prompt.

To link a C++ program, use gxx instead of gcc, like this:

	gxx -o myprog.exe mymain.o mysub1.o mysub2.o

This will automatically search the C++ libraries, so you won't need to
mention them on the command line.

You can also combine the compilation and link steps, like this:

	gcc -Wall -o myprog.exe mymain.c mysub1.c mysub2.c

Further info about the plethora of GCC switches can be found in the
GCC on-line documentation.  To begin reading it, install the Texinfo
package (txi370b.zip, see the ``On-line docs'' section below) and type
this:

	info gcc invoking

8<------- snip --------

Interesting... I just noticed that the version of info listed in
'readme.1st' is wrong.  It should say 'txi390b.zip'.  Oh, well.  I'll
inform the developers.  ;)

Good luck!

-- 
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| John M. Aldrich, aka Fighteer I  |        fighteer AT cs DOT com         |
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