ruby-oci8 + ruby-2.0.0-preview2 32 bit error

gistfile1.txt

Using ruby-oci8 (2.1.3) from http://github.com/kubo/ruby-oci8.git (at master)   * Checking out revision: master
  Successfully built RubyGem
  Name: ruby-oci8
  Version: 2.1.3
  File: ruby-oci8-2.1.3.gem
with native extensions 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /Users/aabolts/.rvm/rubies/ruby-2.0.0-preview2/bin/ruby extconf.rb 
checking for load library path... 
  DYLD_LIBRARY_PATH... 
    checking /Users/aabolts/Library/Oracle/instantclient... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
	--with-opt-dir
	--with-opt-include
	--without-opt-include=${opt-dir}/include
	--with-opt-lib
	--without-opt-lib=${opt-dir}/lib
	--with-make-prog
	--without-make-prog
	--srcdir=.
	--curdir
	--ruby=/Users/aabolts/.rvm/rubies/ruby-2.0.0-preview2/bin/ruby
	--with-instant-client
	--without-instant-client
/Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:123:in `initialize': RuntimeError (RuntimeError)
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:448:in `new'
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:448:in `block in check_ic_dir'
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:545:in `call'
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:545:in `block in check_lib_in_path'
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:535:in `each'
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:535:in `check_lib_in_path'
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:481:in `block in check_ic_dir'
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:475:in `each'
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:475:in `check_ic_dir'
	from /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:315:in `get'
	from extconf.rb:18:in `<main>'
---------------------------------------------------
Error Message:
  unknown file header: 00 00
Backtrace:
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:123:in `initialize'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:448:in `new'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:448:in `block in check_ic_dir'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:545:in `call'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:545:in `block in check_lib_in_path'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:535:in `each'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:535:in `check_lib_in_path'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:481:in `block in check_ic_dir'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:475:in `each'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:475:in `check_ic_dir'
  /Users/aabolts/.rvm/gems/ruby-2.0.0-preview2@crmdata/bundler/gems/ruby-oci8-82724d943174/ext/oci8/oraconf.rb:315:in `get'
  extconf.rb:18:in `<main>'
---------------------------------------------------
See:
 * http://ruby-oci8.rubyforge.org/en/HowToInstall.html
 * http://ruby-oci8.rubyforge.org/en/ReportInstallProblem.html