gem fails to install in 10.9.5

[bomberstudios]

I get this error when trying to build:

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb 
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby: invalid switch in RUBYOPT: -e (RuntimeError)

I've "fixed" it by doing sudo cp -R universal-darwin14 universal-darwin13 in /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0 but that's just a horrible hack : )

Thanks in advance!

[ferrous26]

I think the solution here is going to end up being a binary distribution of accessibility_core