X-Spam-Check-By:	sourceware.org
MIME-Version:	1.0
Subject:	RE: Can I use two sets of different cygwin installations simultaneously?
Date:	Tue, 15 Aug 2006 13:50:01 -0400
Message-ID:	<31DDB7BE4BF41D4888D41709C476B65704168E19@NIHCESMLBX5.nih.gov>
In-Reply-To:	<20060815110227.68834.qmail@web70207.mail.krs.yahoo.com>
From:	"Buchbinder, Barry \(NIH/NIAID\) [E]" <BBuchbinder AT niaid DOT nih DOT gov>
To:	"?? ?" <choikwanghoon2002 AT yahoo DOT co DOT kr>, <cygwin AT cygwin DOT com>
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Unsubscribe:	<mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id k7FHoCRs028339

±¤ÈÆ ÃÖ wrote:
> Can I use two different sets of cygwin installations safely?
> 
> For example, one set may include the up-to-date full packages, while
> the other may include somewhat old-dated, partially installed
> packages.  
> 
> The second set might look strange to you, but I have to keep it
> because I need to maintain the same cygwin environment as what all of
> my colleagues have in order to develop some software together.  
> 
> It would be the best if I can configure the cygwin setup procedure to
> satisfy this requirement. 
> 
> Thanks in advance
> 
> K. Choi
> 
> ________________________________________________________
> 180µµ ´Þ¶óÁø ¾ßÈÄ! ¸ÞÀÏ - ÄÄÇ»ÅÍ¿Í ÈÞ´ëÆùÀ¸·Î ¾ðÁ¦ ¾îµð¼­³ª »õ·Î¿î ¾ßÈÄ! ¸ÞÀÏÀ» È®ÀÎÇغ¸¼¼¿ä.
> http://kr.content.mail.yahoo.com/cgland

I think that you want to have two completely different cygwins, say one in c:\cygwin and one in c:\cygwin_old.  Use two different copies of setup (c:\cygwin\arc\setup.exe and c:\cygwin_old\arc\setup.exe) each with its own package repository (c:\cygwin\arc and c:\cygwin_old\arc) to maintain them.  Then use only one at a time and start them with batch files.  Note that you can run multiple cygwin windows at a time but they all have to be started from the same batch file.  (Modify to your specifics and taste.)

	@REM this is CYGWIN.BAT
	@echo off
	PATH=c:\cygwin;%PATH%
	set HOME=/home/username
	set CYGWIN=check_case:adjust export title nostrip_title
	C:
	chdir C:\cygwin
	bin\mount -f -u -b "c:/cygwin/bin" "/usr/bin"
	bin\mount -f -u -b "c:/cygwin/lib" "/usr/lib"
	bin\mount -f -u -b "c:/cygwin" "/"
	bin\bash --login -I
	exit

and

	@REM this is CYGWIN_OLD.BAT
	@echo off
	PATH=c:\cygwin_old;%PATH%
	set HOME=/home/username
	set CYGWIN=check_case:adjust export title nostrip_title
	C:
	chdir C:\cygwin_old
	bin\mount -f -u -b "c:/cygwin_old/bin" "/usr/bin"
	bin\mount -f -u -b "c:/cygwin_old/lib" "/usr/lib"
	bin\mount -f -u -b "c:/cygwin_old" "/"
	bin\bash --login -I
	exit

Directories that you want to share between both installations can be put in either installation (or outside of both) and mounted.

	mount -f -u -b "c:/cygwin/home" "/home"
or
	mount -f -u -b "c:/cygwin_common/home" "/home"

Also, check the mail archives.  I know about the following mail threads, though they do not may or may not be of help (and there may be others).
  - January 2005: Multiple installations and 3PPs
  - October 2004: Spurious "You have multiple copies of cygwin1.dll on your system."

If you give it a try, remember that I haven't tried it, so don't be surprised.  :-)

Good luck.

- Barry

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -