IOTA

How to build and install the Java IOTA Reference Implementation (IRI) on macOS

1. MacOS Sierra comes with a "system Ruby 2.0.0p645" pre-installed.
   Do not use the system Ruby.
   
   First install Ruby Version Manager (RVM):
   Type: \curl -L https://get.rvm.io | bash -s stable
   
   Output:
   Installing RVM to /Users/robertlie/.rvm/
   Adding rvm PATH line to /Users/robertlie/.profile /Users/robertlie/.mkshrc /Users/robertlie/.bashrc /Users/robertlie/.zshrc.
   Adding rvm loading line to /Users/robertlie/.profile /Users/robertlie/.bash_profile /Users/robertlie/.zlogin.
   Installation of RVM in /Users/robertlie/.rvm/ is almost complete:
   * To start using RVM you need to run `source /Users/robertlie/.rvm/scripts/rvm`
   in all your open shell windows, in rare cases you need to reopen all shell windows.
   * WARNING: '~/.profile' file found. To load it into your shell, add the following line to '/Users/robertlie/.bash_profile':
   source ~/.profile
   
   Note:
   .bash_profile is modified.
   
   
2. Install xcode-select:
   Type: xcode-select --install
   
   Note:
   If you do not install xcode-select you will get this error message when isntalling ruby (next step):
   dyld: lazy symbol binding failed: Symbol not found: _utimensat
   
   
3. Install latest ruby version.
   Type: rvm install ruby-2.4.2
   
   Note:
   If you want to know the latest version, see:
   http://www.ruby-lang.org/en/downloads/
   
   
4. Check ruby version.
   Type: ruby -v
   
   ruby 2.4.2
   
   
5. Install maven.
   Type: brew install maven
   
   
6. Install Java IOTA Reference Implementation (IRI) source code.
   Type: mkdir ~/tools
   Type: mkdir ~/tools/iota_mainnet
   Type: cd tools/iota_mainnet
   Type: git clone https://github.com/iotaledger/iri
   Type: cd iri
   
   
7. Show current git branch.
   Type: git branch -a
   
   Output:
   * dev
   remotes/origin/HEAD -> origin/dev
   remotes/origin/dev
   :
   
   
8. Show all tags.
   Type: git tag -l
   
   Output:
   :
   v1.3.2.2
   v1.4.0
   v1.4.0-testnet
   :
   
   
9. Checkout a tagged version:
   Type: git checkout tags/v1.4.0
   
   
10. Show current git branch.
    Type: git branch -a
    
    Output:
    * (HEAD detached at v1.4.0)
    dev
    :
    
    
11. Build the Java code.
    Type: mvn clean compile && mvn package
    
    
12. The compiled iri-xxx.jar file can be found at:
    ~/tools/iota_mainnet/iri/target