From: mikegee AT creator DOT dp DOT ua (Mike Gee)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Include Paths
Date: Sun, 2 Jan 2000 23:57:09 +0200
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Hi Brendan!

Please don't change subject abruptly like you just did from "MGL & DJGPP" 
to "Include Paths" - I nearly missed your post because of that.

In article <386EC613 DOT A7B4FA10 AT global2000 DOT net>,  Sat, 01 Jan 2000 22:29:23 
-0500,  Andrea Ryan says...
> DJGPP didn't search the Scitech directories and the MGL headers were not
> found.
> Brendan Ryan
> 
> C:\SCITECH\EXAMPLES\MGL\SAMPLES>gcc hello.c -o hello.exe -v

One more time, the very quick fix to your problem would be invoking GCC 
with -I and -L options, like this:

gcc -IC:\SCITECH\INCLUDE -LC:\SCITECH\LIB\DOS32\DJ2 hello.c -o hello.exe 
-v

where -I specifies paths to include directories, and -L specifies paths 
to library directories.

I suggest you use this as a workaround, until you solve your problem with 
environment.

Other than that, you're setting environment variables improperly.

set CPLUS_LIBRARY_PATH=C:\Scitech\Lib\Dos32\Dj2
set CPLUS_LIBRARY_PATH=C:\Djgpp\lang\cxx

second SET command cancels out first command; if you want to add path to 
existing variable, you need to do it this way:

set CPLUS_LIBRARY_PATH=C:\Scitech\Lib\Dos32\Dj2
set CPLUS_LIBRARY_PATH=%CPLUS_LIBRARY_PATH%;C:\Djgpp\lang\cxx

Note that if environment variable don't exist, then appending will result 
in invalid path, i.e.

rem Set to empty string will remove environment variable
set CPLUS_LIBRARY_PATH=

rem Now we try to append to non-existing variable - 
rem - this will lead to invalid path
set CPLUS_LIBRARY_PATH=%CPLUS_LIBRARY_PATH%;C:\Djgpp\lang\cxx

BTW I can't find CPLUS_LIBRARY_PATH in docs on GCC, so this your setting 
probably don't affect compilation at all, just wasting environment space.

Please post your SET output, like Eli Zaretskii asked you. 

And please disregard my advice to run startmgl.bat before compiling with 
MGL. Just looked into it - by default it overwrites file djgpp.env with 
it's own version without warning and backup, which is Bad Thing(tm). 
Didn't notice it earlier - never used those "proper procedures" myself, 
preferring to set up manually :) Will look into, given enough time.

And Happy New Year, folks!

-- 
Best regards, Mike