title: Error installing Ruby 1.9.2 on Yosemite
body: <p>I'm getting an error when installing ruby 1.9.2 with rvm on Yosemite. Could someone help me? I updated homebrew and rvm. I'm working with someone else on this project so I can't upgrade ruby. I put a link to my output below. Thanks ahead of time!</p>
  
  <pre><code>Kanyons-MacBook-Pro:~ USERNAME$ rvm install 1.9.2-head
  ruby-1.9.2-head - #removing src/ruby-1.9.2-head..
  Checking requirements for osx.
  Certificates in '/usr/local/etc/openssl/cert.pem' are already up to date.
  Requirements installation successful.
  Installing Ruby from source to: /Users/USERNAME/.rvm/rubies/ruby-1.9.2-head, this may take a while depending on your cpu(s)...
  HEAD is now at 5d9f08f bump patchlevel
  From git://github.com/ruby/ruby
   * branch            ruby_1_9_2 -&gt; FETCH_HEAD
  Current branch ruby_1_9_2 is up to date.
  Copying from repo to src path...
  ruby-1.9.2-head - #applying patch /Users/USERNAME/.rvm/patches/ruby/1.9.2/head/r42282.patch.
  ruby-1.9.2-head - #applying patch /Users/USERNAME/.rvm/patches/ruby/ssl_no_ec2m.patch.
  ruby-1.9.2-head - #autoreconf.
  ruby-1.9.2-head - #configuring..........................................
  ruby-1.9.2-head - #post-configuration.
  ruby-1.9.2-head - #compiling..................
  Error running '__rvm_make -j 1',
  showing last 15 lines of /Users/USERNAME/.rvm/log/1413513694_ruby-1.9.2-head/make.log
  generating newline.c ...
  converter for universal_newline
  converter for crlf_newline
  converter for cr_newline
  done.  (0.06user 0.00system 0.01elapsed)
  /usr/local/opt/apple-gcc42/bin/gcc-4.2 -O3 -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl/include -fno-common -pipe -I. -I.ext/include/x86_64-darwin14.0.0 -I./include -I.        -DRUBY_EXPORT -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -o newline.o -c newline.c
  couldn't understand kern.osversion `14.0.0'
  /usr/local/opt/apple-gcc42/bin/gcc-4.2 -O3 -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl/include -fno-common -pipe -I. -I.ext/include/x86_64-darwin14.0.0 -I./include -I. -DRUBY_EXPORT -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -o dmyext.o -c dmyext.c
  couldn't understand kern.osversion `14.0.0'
  /usr/local/opt/apple-gcc42/bin/gcc-4.2 -O3 -I/usr/local/opt/readline/include -I/usr/local/opt/libksba/include -I/usr/local/opt/openssl/include -fno-common -pipe -L. -L/usr/local/opt/readline/lib         -L/usr/local/opt/libksba/lib -L/usr/local/opt/openssl/lib -Wl,-u,_objc_msgSend   main.o dmydln.o dmyencoding.o dmyversion.o miniprelude.o array.o bignum.o class.o compar.o complex.o dir.o dln_find.o enum.o enumerator.o error.o eval.o load.o proc.o file.o gc.o hash.o inits.o io.o marshal.o math.o node.o numeric.o object.o pack.o parse.o process.o random.o range.o rational.o re.o regcomp.o regenc.o regerror.o regexec.o regparse.o regsyntax.o ruby.o safe.o signal.o sprintf.o st.o strftime.o string.o struct.o time.o transcode.o util.o variable.o compile.o debug.o iseq.o vm.o vm_dump.o thread.o cont.o ascii.o us_ascii.o unicode.o utf_8.o newline.o  dmyext.o -lpthread -ldl -lobjc  -o miniruby
  couldn't understand kern.osversion `14.0.0'
  miniruby(65084,0x7fff7bed0300) malloc: *** error for object 0x100801a08: incorrect checksum for freed object - object was probably modified after being freed.
  *** set a breakpoint in malloc_error_break to debug
  make: *** [.rbconfig.time] Abort trap: 6
  ++ return 2
  There has been an error while running make. Halting the installation.
  </code></pre>