installing gem puma on windows error - ruby-on-rails

Question

My first step when trying to install the gem puma is to enter gem install puma --version 2.12.3 into my command prompt. Then this error appears. I don't know what to make of it.
C:\Users>gem install puma --version 2.12.3
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing puma:
ERROR: Failed to build gem native extension.
C:/Ruby22-x64/bin/ruby.exe -r ./siteconf20150809-8352-14jkju1.rb extconf.rb
checking for BIO_read() in -lcrypto... no
checking for BIO_read() in -llibeay32... no
*** 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:/Ruby22-x64/bin/$(RUBY_BASE_NAME)
--with-puma_http11-dir
--without-puma_http11-dir
--with-puma_http11-include
--without-puma_http11-include=${puma_http11-dir}/include
--with-puma_http11-lib
--without-puma_http11-lib=${puma_http11-dir}/lib
--with-cryptolib
--without-cryptolib
--with-libeay32lib
--without-libeay32lib
extconf failed, exit code 1
Gem files will remain installed in C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/puma-2
.12.3 for inspection.
Results logged to C:/Ruby22-x64/lib/ruby/gems/2.2.0/extensions/x64-mingw32/2.2.0
/puma-2.12.3/gem_make.out
Once I receive this , I follow these instructions https://github.com/hicknhack-software/rails-disco/wiki/Installing-puma-on-windows
And I receive this error:
C:\Users>gem install puma -- --with-opt- dir=c:\
openssl
ERROR: Loading command: install (LoadError)
127: The specified procedure could not be found. - C:/Ruby22-x64/lib/r
uby/2.2.0/x64-mingw32/openssl.so
ERROR: While executing gem ... (NoMethodError)
undefined method `invoke_with_build_args' for nil:NilClass
Side note: here is the mkmf.log
mkmf.log
Please Help! thanks!

Answer 1

I think I have found answer for your question. Here the link
You must download OpenSSL libraries. There are two types OpenSSL libraries, one for 32bit other for 64bit.
After you installed them run gem install puma -- --with-opt-dir=D:\openssl
--with-opt-dir=D:\openssl is folder direction where you have downloaded libs.
Some tutorials have links to openssl which is for 32bit computers. I realized this after several failures. Then I have downloaded 64 bit version.