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Re: problems with /bin/sh
- From: Igor Pechtchanski <pechtcha at cs dot nyu dot edu>
- To: Erik Rantapaa <erantapaa at yahoo dot com>
- Cc: cygwin at cygwin dot com
- Date: Thu, 14 Apr 2005 16:56:59 -0400 (EDT)
- Subject: Re: problems with /bin/sh
- References: <20050414175509.32931.qmail@web41302.mail.yahoo.com>
- Reply-to: cygwin at cygwin dot com
On Thu, 14 Apr 2005, Erik Rantapaa wrote:
> I just did a complete re-install of the latest version of cygwin
> (1.5.14-1), and come across the following problem: when prepping a
> source for compilation, invoking:
>
> ./configure
>
> would stop at seemingly random places. However, running:
>
> bash ./configure
>
> worked much better. It still didn't complete the entire script because
> the configure script has internal references to /bin/sh. Symlinking sh
> -> bash seems to fix all the problems.
This is one of the common pitfalls people encounter with Cygwin: /bin/sh
is *not* bash, it's ash. Therefore, scripts written with the assumption
that /bin/sh is bash (as it is on some [most?] Linux distributions) fail
on Cygwin when they encounter bash-isms. They would also fail on any
other Unix where /bin/sh is not bash. This is a portability problem in
the scripts, and should be fixed there (if only by changing the shebang to
#!/bin/bash).
> It's been so long since I've done a re-install of cygwin, so I don't
> know if this is a known problem or not. In any case, I can furnish more
> details if anyone needs them.
The usual (and preferred) way of providing details about your installation
in problem reports is described in <http://cygwin.com/problems.html>.
Igor
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