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From:	Marc Horowitz <marc AT mit DOT edu>
To:	cygwin AT cygwin DOT com
Subject:	Return of C1902
Date:	Wed, 06 Aug 2008 04:12:35 -0400
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I've got the current versions of cygwin and sshd installed on a
windows box (the OS itself was only installed a couple days ago).  I
can ssh in using pubkey auth with no problem.  However, I'm getting
errors like

  LINK : fatal error LNK1101: incorrect MSPDB80.DLL version; recheck installation\ of this product

when I try to build C++ apps with Visual Studio Express 2008.  

This isn't C1902, of course, but the symptoms are nearly the same.  If
I log in with a password, everything works fine.

I see this issue has been discussed before:

  http://www.cygwin.com/ml/cygwin/2006-07/msg00577.html
  http://cygwin.com/ml/cygwin/2007-01/msg00651.html

Corinna Vinschen implied that this problem has been fixed, but that
does not seem to be the case for me.  Is this still an outstanding
bug?

I also have a workaround, hopefully this will help someone else out
there.  Since my actual goal is to set up a continuous integration
build engine, only one user needs to be able to log in remotely and
run builds.  I set up a second sshd, on an alternate port, which runs
as a windows server as the build user instead of SYSTEM.  The user
name is ci, and I did the following, as that user in a cygwin shell:

mkdir ~/.ssh
ssh-keygen (with no password)
cp /etc/sshd_config ~/.ssh/sshd_config
edit ~/.ssh/sshd_config to set an alternate port number, and disable
  privilege separation
cygrunsrv -I sshd-ci -p /usr/sbin/sshd -a "-D -f /home/ci/.ssh/sshd_config"

Then, on the windows console, I brought up the Services manager (My
Computer -> Manager -> Services and Applications -> Services),
double-clicked the sshd-ci service, selected the "Log On" tab, clicked
the "This account" radio button, and filled in the local user ci
(actually ".\ci") and its password.  After starting this sshd-ci
service, I can now ssh in with a public key and successfully do a
build.

I can live with this, but if there is a fix I can use, I'd rather do
it "right".

                Marc

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