Hello,
 I'm trying to install Ruby 1.9.1 alongside 1.8.7 on Snow Leopard. I'm
following the instructions here
http://blog.twg.ca/2009/09/livin-on-the-edge-ruby-rails-and-snow-leopard/
but here's where it's failing:

MacBookPro:~ martine$ rvm install 1.9.1
<i> Installing Ruby from source to: /Users/martine/.rvm/ruby-1.9.1-p376
</i>
<i> Extracting ruby-1.9.1-p376 ... </i>
<i> Configuring ruby-1.9.1-p376, this may take a while depending on your
cpu(s)... </i>
<e> Error running './configure
--prefix=/Users/martine/.rvm/ruby-1.9.1-p376 --enable_shared ', please
check /Users/martine/.rvm/log/ruby-1.9.1-p376/configure.error.log </e>

and the log shows:

[2009-12-14 18:41:52] ./configure
--prefix=/Users/martine/.rvm/ruby-1.9.1-p376 --enable_shared
configure: error: unrecognized option: `--enable_shared'
Try `./configure --help' for more information.

Any ideas?
Thanks in advance!
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