title: Trying to install RVM and getting: Error running '__rvm_make -j2'
body: <p>I was trying to install RVM with stable ruby on a mac and got a make error:</p>
  
  <p><strong>abbreviated console output:</strong></p>
  
  <pre><code>   \curl -sSL https://get.rvm.io | bash -s stable --ruby\curl -sSL https://get.rvm.io
     ...
     ...
     ... 
     ruby-2.4.1 - #extracting ruby-2.4.1 to /Users/bbush/.rvm/src/ruby-2.4.1....
     ruby-2.4.1 - #applying patch /Users/bbush/.rvm/patches/ruby/2.4.1/random_c_using_NR_prefix.patch.
     ruby-2.4.1 - #configuring...................................................................
     ruby-2.4.1 - #post-configuration.
     ruby-2.4.1 - #compiling...........
     Error running '__rvm_make -j2',
  </code></pre>
  
  <p><strong>abbreviated make.log:</strong></p>
  
  <pre><code>............
  compiling enc/us_ascii.c
  compiling enc/unicode.c
  compiling enc/utf_8.c
  compiling enc/trans/newline.c
  linking miniruby
  generating encdb.h
  make: ./miniruby: Permission denied
  make: ./miniruby: Permission denied
  make: *** [.rbconfig.time] Error 1
  make: *** Waiting for unfinished jobs....
  make: *** [encdb.h] Error 1
  ++ /scripts/functions/support : __rvm_make()  383 &gt; return 2
  </code></pre>
  
  <p><strong>System</strong></p>
  
  <ul>
  <li>Mac OS X – High Sierra (10.13.4) </li>
  <li>Homebrew 1.6.9</li>
  </ul>
  
  <p>I'm thinking that using sudo with the RVM install curl command is a bad idea but how do I get around this permissions issue?
  Thanks.</p>