From:	"John M. Aldrich" <fighteer AT cs DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: How to locate djgpp.env?
Date:	Fri, 28 Aug 1998 19:06:26 -0400
Organization:	Two pounds of chaos and a pinch of salt.
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To:	djgpp AT delorie DOT com
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Goh Yong Kwang wrote:
> 
> I'm planning to write a utility that can help people to modify the
> djgpp.env file.

As stated, this may not be a good idea.  But to answer your other
questions...

> How do I detect whether DJGPP is installed in a user's computer
> *reliably*?

There is no 100% reliable way to do so, except for searching all drives
on a system (a highly unwelcome thing to do for most users).  However,
if DJGPP is set up and running correctly on a system, any DJGPP program
that does not specifically disable loading of the 'djgpp.env' file will
have a variable called "DJDIR" set in its environment space, which
specifies the root DJGPP directory.  Testing for this is the best way to
go.

> Also, how do I locate the djgpp.env file if the user has not set the DJGPP
> environment variable to indicate djgpp.env's location? (This may sound
> silly since most people installs DJGPP in \DJGPP directory and the file
> can be found there but there is also a minority who has installed DJGPP
> in some other unusual location on their hard disk.) :)

I wouldn't try.  If the user's installation is broken, your program
should at _best_ recommend a fix, but I wouldn't even have it try to
make any changes unless the basics are working.  If a user can't get
DJGPP installed properly, the very last thing he or she should be doing
is fooling with 'djgpp.env'.

-- 
John M. Aldrich, aka Fighteer I <fighteer AT cs DOT net>  UIN# 7406319

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