From: Urban Hafner <urban@...>
Date: 2006-06-18T17:06:26+09:00
Subject: Re: Problem with irb on OS X

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On 18 Jun 2006, at 08:04, Aaron Kulbe wrote:

> Macbook:~ aaron$ irb
> dyld: NSLinkModule() error
> dyld: Library not loaded: /opt/local/lib/libreadline.5.0.dylib
>  Referenced from: /opt/local/lib/ruby/1.8/i686-darwin8.6.2/ 
> readline.bundle
>  Reason: image not found
> Trace/BPT trap
>
> It turns out that readline is installed.
>
> Macbook:~ aaron$ sudo port installed readline
> Password:
> The following ports are currently installed:
>  readline @5.0.005_0+darwin_8
>  readline @5.1.004_0 (active)
> Macbook:~ aaron$
>
> But when I try to uninstall either version, to reinstall it... they  
> both say
> they depend on ruby and postgresql8.  So I'm stuck.

The problem is that ruby was compiled when readline 5.0 was installed  
so it links against the 5.0 dylib. There are several ways to fix it:

1) Uninstall ruby and recompile it. Now it will find that readline  
5.1 is installed and link against it
2) Make a symbolic link like so:

sudo ln -s /opt/local/lib/libreadline.5.1.dylib /opt/local/lib/ 
libreadline5.0.dylib

Now it will find the dylib and hopefully it will work.

Solution 1) is cleaner but solution 2) is faster.

BTW: If you want to uninstall a port and you are really sure what you  
are doing you can do 'port -f uninstall <portname>'.

Urban
- --
http://bettong.net - Urban's Blog


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