D:\wolf\Software\cucumber\tmp\bin\cache > gem install cucumber --version 0.10.7 Temporarily enhancing PATH to include DevKit... Building native extensions. This could take a while... ERROR: Error installing cucumber: ERROR: Failed to build gem native extension. C:/Ruby192/bin/ruby.exe extconf.rb checking for re.h... *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=C:/Ruby192/bin/ruby C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': The complier failed to generate an executable file. (RuntimeError) You have to install development tools first. from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:452:in `try_cpp' from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:834:in `block in have_header' from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:693:in `block in checking_for' from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block (2 levels) in postpone' from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open' from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block in postpone' from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open' from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:276:in `postpone' from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for' from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:833:in `have_header' from extconf.rb:14:in `
' Gem files will remain installed in C:/Ruby192/lib/ruby/gems/1.9.1/gems/json-1.5.4 for inspection. Results logged to C:/Ruby192/lib/ruby/gems/1.9.1/gems/json-1.5.4/ext/json/ext/parser/gem_make.out