Problem installing Ruby gem

Question

I am trying to install json on windows as follows, but not working. Please help me with a possible renovation for the same.

C:\Ruby193\bin>gem install --local json-1.8.1.gem Temporarily enhancing PATH to include DevKit... Building native extensions. This could take a while... ERROR: Error installing json-1.8.1.gem: ERROR: Failed to build gem native extension. C:/Ruby193/bin/ruby.exe -r ./siteconf20140725-4216-11o740j.rb extconf.rb creating Makefile make clean Makefile:165: *** target pattern contains no `%'. Stop. make Makefile:165: *** target pattern contains no `%'. Stop. make failed, exit code 2 Gem files will remain installed in C:/Ruby193/lib/ruby/gems/1.9.1/gems/json-1.8.1 for inspection. Results logged to C:/Ruby193/lib/ruby/gems/1.9.1/extensions/x86-mingw32/1.9.1/json-1.8.1/gem_make.out 

Answer 1

RubyGems 2.4.1 will not create native extensions in Ruby version 1.9.3 and earlier versions of Windows.

You will need to downgrade RubyGems to 1.8.29. To do this, run the following command:

 gem update --system 1.8.29 

Check gem version:

 gem -v 1.8.29 

Now try again:

 gem install --local json-1.8.1.gem 

ref: https://groups.google.com/forum/#!topic/rubyinstaller/k19SeJijpKU/discussion