Ruby Gems Not Installing, Hangs While Getting Gems

I recently cleared out all of my ruby install and installed form sources using the instructions at hivelogic

I have have been able to install a few gems, but most of the time, "sudo gem install rails" hangs. I've added the -V flag, and it just seems to hang, I don't get any error. And the process can not be killed. I can only reboot to kill the process.

My ruby info:

[tim@ ~]# ruby -v
ruby 1.8.7 (2010-01-10 patchlevel 249) [i686-darwin10.2.0]
[tim@ ~]# gem -v
1.3.6
[tim@ ~]# gem environment
RubyGems Environment:
  - RUBYGEMS VERSION: 1.3.6
  - RUBY VERSION: 1.8.7 (2010-01-10 patchlevel 249) [i686-darwin10.2.0]
  - INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/1.8
  - RUBY EXECUTABLE: /usr/local/bin/ruby
  - EXECUTABLE DIRECTORY: /usr/local/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-darwin-10
  - GEM PATHS:
     - /usr/local/lib/ruby/gems/1.8
     - /Users/tim/.gem/ruby/1.8
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - :sources => ["http://gems.rubyforge.org/", "http://gems.rubyforge.org"]
  - REMOTE SOURCES:
     - http://gems.rubyforge.org/
     - http://gems.rubyforge.org
[tim@ ~]# which ruby
/usr/local/bin/ruby
[tim@ ~]# which gem
/usr/local/bin/gem
[tim@ ~]# uname -a
Darwin tim-hoolihans-macbook-pro-15.local 10.2.0 Darwin Kernel Version 10.2.0: Tue Nov  3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386 i386
[tim@ ~]# 

Any ideas?

Answer:

I built again with the following line and don't have the problem now:

ARCHFLAGS='-arch i386 -arch ppc -arch ppc64 -arch x86_64' sudo ./configure --enable--shared --enable-pthread CFLAGS=-D_XOPEN_SOURCE=1