title: Installing gem byebug on Windows 7 x64
body: <p>I've seen there have been others who have had a problem installing byebug on a Windows x64 system... Reading over the comments and trying a number of entries I am still not able to get it to install.  Here is the response I get each time I try:</p>
  
  <pre><code>D:\Ruby25-x64\bin&gt;gem install byebug
  Temporarily enhancing PATH for MSYS/MINGW...
  Building native extensions. This could take a while...
  ERROR:  Error installing byebug:
  ERROR: Failed to build gem native extension.
  
  current directory: D:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/byebug-10.0.1/ext/byebug
  D:/Ruby25-x64/bin/ruby.exe -r ./siteconf20180327-5764-1i0l197.rb extconf.rb
  D:/Ruby25-x64/bin/ruby.exe: No such file or directory -- extconf.rb (LoadError)
  
  extconf failed, exit code 1
  
  Gem files will remain installed in D:/Ruby25-x64/lib/ruby/gems/2.5.0/gems/byebug-10.0.1 for inspection.
  Results logged to D:/Ruby25-x64/lib/ruby/gems/2.5.0/extensions/x64-mingw32/2.5.0/byebug-10.0.1/gem_make.out
  
  (gem_make.out Log)
  
  current directory: 
  
  D:/Ruby25x64/lib/ruby/gems/2.5.0/gems/byebug10.0.1/ext/byebug
  D:/Ruby25-x64/bin/ruby.exe -r ./siteconf20180327-2084hqddnk.rb extconf.rb
  D:/Ruby25-x64/bin/ruby.exe: No such file or directory -- extconf.rb 
  (LoadError) extconf failed, exit code 1
  </code></pre>
  
  <p>Is there anyone out there who can give me a clear solution to this problem.  Thanks</p>