rails_source_installation_process.txt

Do make sure that you have latest version of gems, ruby and bundle installed. 

-- Update gems: gem update --system
-- sudo gem install rubygems-update 
-- update_rubygems

Uninstalling and Installing ruby to latest version:
-- brew uninstall ruby
-- brew install ruby
-- brew unlink ruby
-- brew link --overwrite ruby

Note: It prompts a message that not empty folder while linking, so you can delete that 
folder and try the whole process of linking ruby again:
-- rm -r /usr/local/opt/ruby

To install bundler:
-- sudo gem install bundler


Now install all the gems using the bundler:
-- bundle install

If it fails for openssl:
-- Check for installation of openssl: brew install openssl
-- Then install eventmachine: sudo gem install eventmachine -v 1.0.8

-- For installing mysql: brew install mysql
-- sudo gem install mysql2 -v 0.4.2

If you created some issues with bundler by using sudo, do following:
-- rm -r ~/.bundler
-- bundle install --path ~/.bundle

If you get stuck with installing PostGRESQl, use following commands:
-- brew uninstall postgresql
-- brew install postgresql
-- export PATH=$PATH:/usr/local/Cellar/postgresql/9.5.0/include/
-- export ARCHFLAGS='-arch x86_64'
-- sudo env ARCHFLAGS="-arch x86_64" gem install pg -v '0.18.4'
-- bundle install

If it fails for stackprof:
* Check if it finds the correct ruby version. 
* If no then some linking issue.
* Alternatively, try to set the ruby version to the path.

-- export PATH=$PATH:/usr/local/bin/ruby
-- sudo gem install stackprof -v '0.2.7'

Finally run the "bundle install" again.