title: Installing Ruby 2.0.0 using RVM with errors in configure
body: <p>I am currently running on Ruby 1.9.3p134 and trying to install Ruby 2.0.0 using RVM, however I keep running into the errors below. I am running on OSX 10.7.5:</p>
  
  <blockquote>
    <p>Error running 'env LDFLAGS=-L/opt/sm/pkg/active/lib
    CFLAGS=-I/opt/sm/pkg/active/include CPATH=/opt/sm/pkg/active/include
    ./configure --prefix=/usr/local/rvm/rubies/ruby-2.0.0-p195
    --with-opt-dir=/opt/sm/pkg/active --disable-install-doc --without-tcl --without-tk --enable-shared' please read /usr/local/rvm/log/ruby-2.0.0-p195/1369791751_configure.log There has
    been an error while running configure. Halting the installation.</p>
  </blockquote>
  
  <p>The configure log as below:</p>
  
  <blockquote>
    <p>[2013-05-29 11:42:31] ./configure configure: WARNING: unrecognized
    options: --without-tcl, --without-tk checking build system type...
    x86_64-apple-darwin11.4.2 checking host system type...
    x86_64-apple-darwin11.4.2 checking target system type...
    x86_64-apple-darwin11.4.2 checking whether the C compiler works... no
    configure: error: in <code>/usr/local/rvm/src/ruby-2.0.0-p195': configure:
    error: C compiler cannot create executables See</code>config.log' for more
    details</p>
  </blockquote>
  
  <p>Just couldn't get around this for days and I need help.</p>