Milan Rawal

Thanks sir installing OpenSSL lib solved the problem.

$ rbenv install 2.1.2
Downloading ruby-2.1.2.tar.gz...
-> http://dqw8nmjcqpjn7.cloudf...
Installing ruby-2.1.2...
BUILD FAILED
Inspect or clean up the working tree at /tmp/ruby-build.20140711233341.7690
Results logged to /tmp/ruby-build.20140711233341.7690.log
Last 10 log lines:
io-console 0.4.2
json 1.8.1
minitest 4.7.5
psych 2.0.5
rake 10.1.0
rdoc 4.1.0
test-unit 2.1.2.0
installing rdoc: /home/codemilan/.rbenv/versions/2.1.2/share/ri/2.1.0/system
installing capi-docs: /home/codemilan/.rbenv/versions/2.1.2/share/doc/ruby
The Ruby openssl extension was not compiled. Missing the OpenSSL lib?