Ruby version installation error

Error running '__rvm_make -j4',
showing last 15 lines of /home/codfection/.rvm/log/1476026950_ruby-2.1.5/make.log
constdefs.c:21:6: note: in expansion of macro ‘LONG2FIX’
      LONG2FIX(n))
      ^~~~~~~~
constdefs.c:1715:50: note: in expansion of macro ‘INTEGER2NUM’
     rb_define_const(rb_mSockConst, "EAI_SYSTEM", INTEGER2NUM(EAI_SYSTEM));
                                                  ^~~~~~~~~~~
linking shared-object stringio.so
make[2]: Leaving directory '/home/codfection/.rvm/src/ruby-2.1.5/ext/stringio'
linking shared-object socket.so
make[2]: Leaving directory '/home/codfection/.rvm/src/ruby-2.1.5/ext/socket'
linking shared-object ripper.so
make[2]: Leaving directory '/home/codfection/.rvm/src/ruby-2.1.5/ext/ripper'
make[1]: Leaving directory '/home/codfection/.rvm/src/ruby-2.1.5'
make: *** [uncommon.mk:180: build-ext] Error 2
++ return 2
There has been an error while running make. Halting the installation.