Message-Id: <199808291608.SAA61296@ieva06.lanet.lv>
From: "Andris Pavenis" <pavenis AT lanet DOT lv>
To: "John M. Aldrich" <fighteer AT cs DOT net>, Ralph Proctor <ralphgpr AT shadow DOT net>
Date: Sat, 29 Aug 1998 18:11:59 +0300
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Subject: Re: How to locate djgpp.env?
CC: djgpp AT delorie DOT com
In-reply-to: <3.0.1.16.19980829103402.378f1c32@shadow.net>
References: <35E737F2 DOT 680FE019 AT cs DOT net>
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Date sent:      	Sat, 29 Aug 1998 10:34:02
From:           	Ralph Proctor <ralphgpr AT shadow DOT net>
Subject:        	Re: How to locate djgpp.env?

> At 07:06 PM 8/28/98 -0400, you wrote:
> 
> >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'.
> 
> Hello John: I see your concern about messing around with the DJGPP.ENV
> file, but there is one change I have been making for a long time with
> apparently no ill effects and I wish you would correct me if I am doing
> something wrong.
> 
> I changed:
> 
> +TMPDIR=%DJDIR%/tmp
> 
> to
> 
> +TMPDIR=D:/      	[D:/ is a ramdrive]
> 
> I only did this because it "SEEMS RIGHT". I think I read somewhere that
> DJGPP.ENV in this case ignores this line anyway if you have a tmpdir
> allocated in your autoexec.bat file. But I just changed the line to be sure.
> Would you comment on this?
> 
> DJVERIFY shows me that my tmpdir works just fine when I compile the test
> file. Also my compiles work as expected.
> 

One hint for poeple who sets TMPDIR to ramdrive. Try to unpack 
large enough .tar.gz or .tgz archive with GNU tar, for example:

	tar xzvf egcs-19980824.tar.gz

and You'll see that simple setting TMPDIR to ramdrive breaks GNU 
tar. A simplest solution is adding additional lines

[tar]
TMPDIR=%DJDIR%/tmp

(note no '+' at start of line) to DJGPP.ENV if '+TMPDIR=location of 
ramdrive' is used at start of DJGPP.ENV. I'm sure I'll get the same 
problem when creating large tar.gz archive. I cannot say 
immediatelly if this is only program such change breaks.

Perhaps there should be no harm to adding such definitions for 
programs that can create huge temporary files in $TMPDIR in 
DJGPP.ENV (that helps also if TMPDIR environment variable is 
set).

GNU tar is first in that list. Maybe there are others.

Andris