$ gem install capybara-webkit-0.12.1.gem
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing capybara-webkit-0.12.1.gem:
ERROR: Failed to build gem native extension.
c:/RailsInstaller/Ruby1.9.3/bin/ruby.exe extconf.rb
Gem files will remain installed in c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.12.1 for inspection.
Results logged to c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.12.1/./gem_make.out
C:\>cat c:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/capybara-webkit-0.12.1/./gem_make.out
c:/RailsInstaller/Ruby1.9.3/bin/ruby.exe extconf.rb
cd src/ && c:/Qt/4.8.3/bin/qmake.exe "c:/Documents and Settings/user/My Documents/Workspace/thoughtbot-capybara-webkit-7289a8e/src/webkit_server.pro" -spec c:/Qt/4.8.3/mkspecs/win32-g++ -o Makefile.webkit_server
'.' is not recognized as an internal or external command,
operable program or batch file.
'.' is not recognized as an internal or external command,
operable program or batch file.
capybara-webkit 0.12.0 built to pkg/capybara-webkit-0.12.0.gem
cd src/ && make -f Makefile.webkit_server
make[1]: Entering directory `/c/Documents and Settings/user/My Documents/Workspace/thoughtbot-capybara-webkit-7289a8e/src'
make -f Makefile.webkit_server.Release
make[2]: Entering directory `/c/Documents and Settings/user/My Documents/Workspace/thoughtbot-capybara-webkit-7289a8e/src'
bin/rcc.exe -name webkit_server webkit_server.qrc -o release/qrc_webkit_server.cpp
make[2]: bin/rcc.exe: Command not found
make[2]: *** [release/qrc_webkit_server.cpp] Error 127
make[2]: Leaving directory `/c/Documents and Settings/user/My Documents/Workspace/thoughtbot-capybara-webkit-7289a8e/src'
make[1]: *** [release] Error 2
make[1]: Leaving directory `/c/Documents and Settings/user/My Documents/Workspace/thoughtbot-capybara-webkit-7289a8e/src'
make: *** [sub-src-webkit_server-pro-make_default-ordered] Error 2
Command 'make' failed
C:\>which make
C:\RailsInstaller\DevKit\bin\make.EXE
C:\>which rcc
C:\Qt\4.8.3\bin\rcc.EXE
C:\>which g++
C:\RailsInstaller\DevKit\mingw\bin\g++.EXE
C:\>echo %PATH%
C:\PROGRA~1\Serena\vm\win32\bin;C:\PROGRA~1\Serena\vm\common\bin\win32;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\ATI Technologies\ATI.ACE\;C:\Program Files\Microsoft SQL Server\80\Tools\Binn\;C:\WINDOWS\system32\WindowsPowerShell\v1.0;C:\Program Files\TortoiseSVN\bin;C:\RailsInstaller\Ruby1.9.3\bin;C:\RailsInstaller\Ruby1.9.3\lib\ruby\gems\1.9.1\bin;C:\RailsInstaller\DevKit\bin;C:\RailsInstaller\Git\cmd;C:\Program Files\ansi153\x86;C:\bin;C:\RailsInstaller\DevKit\mingw\bin;C:\Qt\4.8.3\bin;C:\Program Files\Nodejs;C:\Documents and Settings\user\Desktop\emacs-23.4\bin;C:\Python27;C:\Python27\Scripts;C:\Program Files\GnuWin32\bin;C:\Program Files\Gow\bin;C:\Program Files\Notepad++;C:\Documents and Settings\user\Application Data\npm\
C:\>which make --all
C:\RailsInstaller\DevKit\bin\make.EXE
C:\Qt\4.8.3\bin\make.BAT
C:\Program Files\Gow\bin\make.EXE