C: \ Helper \ genExt> gem install libarchive temporarily enhancing PATH to include DevKit ... Building native extensions. This could take a while ... ERROR: Error installing libarchive: ERROR: Failed to build gem native extension.
C:/RailsInstaller/Ruby1.9.3/bin/ruby.exe
extconf.rb extconf.rb failed to make it possible. 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: /RailsInstaller/Ruby1.9.3/bin/ruby
Gem files will remain installed in C: /RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9 .1 / gems / libarchive-0.1.2 for inspection. Results logged to C: /RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/libarchiv e-0.1.2 / ext / gem_make.out
C: \ Helper \ genExt>
What to do, what to do?