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Re: Problem with symlinks and VPATH Builds

From: Mark D. Roth
Subject: Re: Problem with symlinks and VPATH Builds
Date: Thu, 25 Jul 2002 08:25:39 -0500
User-agent: Mutt/1.2.5i

On Thu Jul 25 01:10 2002 -0700, Paul Eggert wrote:
> I don't see how that patch solves the problem in general.  It has
> a special case for $1 = ., and doesn't handle any other case.

Good point.

> I looked at the ksh source code, since I couldn't believe that it
> always has this problem.  I discovered that ksh's cd command has a -P
> option that causes it to behave in the traditional way.

Well, it's nice of the OS vendors to document this...  The -P option
isn't listed in the ksh docs under Solaris or AIX.  Only OpenBSD seems
to document this.

> I also looked at POSIX 1003.1-2001, and discovered that it _requires_
> the ksh93 behavior.
> So it appears to me that the "proper" fix is to try "cd -P DIR" first,
> and to fall back on plain "cd DIR" if that doesn't work.

Sounds good.  Please see the attached patch.  If it looks good to you,
I'll commit it.

Mark D. Roth <address@hidden>

Attachment: autoconf-pwd-symlink-fix-3.diff
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