title: capybara-webkit (0.8.0) failed to build on window 7
body: <p>I am a newbie. I am trying to build capybara-webkit (0.8.0) with native extensions on window 7. I already installed (path set):RubyMine, Ruby SDK and Gems, Rails, DevKit, Qt, gmake, g++. But I still got the following error msg. Any help is greatly appreciated. </p>
  
  <p>$ gem install capybara-webkit -v '0.8.0'
  Temporarily enhancing PATH to include DevKit...
  Building native extensions.  This could take a while...
  ERROR:  Error installing capybara-webkit:
          ERROR: Failed to build gem native extension.</p>
  
  <pre><code>    c:/Ruby193/bin/ruby.exe extconf.rb
  </code></pre>
  
  <p>c:\Qt\4.8.2\bin\qmake.EXE
  c:\make\gmake.EXE
  cd src/ &amp;&amp; c:/Qt/4.8.2/bin/qmake.exe c:/Ruby193/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.8.0/src/webkit_server.pro -spec c:/Qt/4.8.2/mkspecs/macx-g++ -o Makef\ile.webkit_server
  c:\make\gmake.EXE
  cd src/ &amp;&amp; gmake -f Makefile.webkit_server
  gmake[1]: Entering directory `c:/Ruby193/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.8.0/src'
  g++ -c -pipe -g -Wall -W -DQT_WEBKIT_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -Ic:/Qt/4.8.2/mkspecs/macx-g++ -I. -Ic:/Qt/4.8.2/include/QtCore -Ic:/Qt/4.8.2/include/QtNetwork -Ic:/Qt/4.8.2/include/QtGui -Ic:/Qt/4.8.2/include/QtWebKit -Ic:/Qt/4.8.2/include -I. -o RequestedUrl.o RequestedUrl.cpp
  process_begin: CreateProcess((null), g++ -c -pipe -g -Wall -W -DQT_WEBKIT_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -Ic:/Qt/4.8.2/mkspecs/macx-g++ -I. -Ic:/Qt/4.8.2/include/QtCore -Ic:/Qt/4.8.2/include/QtNetwork -Ic:/Qt/4.8.2/include/QtGui -Ic:/Qt/4.8.2/include/QtWebKit -Ic:/Qt/4.8.2/include -I. -o RequestedUrl.o Req
  uestedUrl.cpp, ...) failed.
  make (e=2): The system cannot find the file specified.</p>
  
  <p>gmake[1]: <em>*</em> [RequestedUrl.o] Error 2
  gmake[1]: Leaving directory <code>c:/Ruby193/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.8.0/src'
  c:/Ruby193/lib/ruby/1.9.1/fileutils.rb:1515:in</code>stat': No such file or directory
   - src/webkit_server (Errno::ENOENT)
          from c:/Ruby193/lib/ruby/1.9.1/fileutils.rb:1515:in <code>block in fu_each_src_dest'
          from c:/Ruby193/lib/ruby/1.9.1/fileutils.rb:1529:in</code>fu_each_src_dest0'
          from c:/Ruby193/lib/ruby/1.9.1/fileutils.rb:1513:in <code>fu_each_src_dest'
          from c:/Ruby193/lib/ruby/1.9.1/fileutils.rb:395:in</code>cp'
          from c:/Ruby193/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.8.0/lib/capybara_webkit_builder.rb:33:in <code>build'
          from c:/Ruby193/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.8.0/lib/capybara_webkit_builder.rb:39:in</code>build_all'
          from extconf.rb:2:in `'</p>
  
  <p>Gem files will remain installed in c:/Ruby193/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.8.0 for inspection.
  Results logged to c:/Ruby193/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.8.0/./gem_make.out</p>