Building Scala 2.x - linux-on-ibm-z/docs GitHub Wiki

Building Scala

ATTENTION!!! This package uses Log4j. Please see details here, for the updates on security vulnerabilities.

Below versions of Scala are available in respective distributions at the time of creation of these build instructions:

Ubuntu (18.04, 20.04, 20.10) has 2.11.12-4
RHEL (8.1, 8.2, 8.3) has 2.10.6

The instructions provided below specify the steps to build Scala version 2.13.3 on Linux on IBM Z Systems for following distributions:

RHEL (7.8, 7.9, 8.1, 8.2, 8.3)
SLES (12 SP5, 15 SP1, 15 SP2)
Ubuntu (18.04, 20.04, 20.10)

General Notes:

When following the steps below please use a standard permission user unless otherwise specified.
A directory /<source_root>/ will be referred to in these instructions. This is a temporary writable directory anywhere you'd like to place it.

Step 1: Build and Install Scala

1.1) Install the dependencies

export SOURCE_ROOT=/<source_root>/

RHEL (7.8, 7.9, 8.1, 8.2, 8.3)
- With OpenJDK
```
sudo yum install -y java-11-openjdk java-11-openjdk-devel wget
```
- With AdoptOpenJDK
```
sudo yum install -y tar wget
```
  - Download and install AdoptOpenJDK 11 (with HotSpot or with OpenJ9) from here.
SLES (12 SP5, 15 SP1, 15 SP2)
- With OpenJDK
```
sudo zypper install -y java-11-openjdk java-11-openjdk-devel wget
```
- With AdoptOpenJDK
```
sudo zypper install -y tar wget gzip
```
  - Download and install AdoptOpenJDK 11 (with HotSpot or with OpenJ9) from here.

Ubuntu (18.04, 20.04, 20.10)

With OpenJDK

sudo apt-get update
sudo apt-get install -y wget openjdk-11-jdk openjdk-11-jdk-headless

With AdoptOpenJDK
```
sudo apt-get update
sudo apt-get install -y wget tar gzip
```
- Download and install AdoptOpenJDK 11 (with HotSpot or with OpenJ9) from here.

1.2) Set Environment Variables

export JAVA_HOME=<Path to Java>
export PATH=$JAVA_HOME/bin:$PATH

1.3) Download and Install Scala

For RHEL and SLES

cd $SOURCE_ROOT
wget http://www.scala-lang.org/files/archive/scala-2.13.3.rpm
sudo rpm -ivh scala-2.13.3.rpm

For Ubuntu

cd $SOURCE_ROOT
wget http://www.scala-lang.org/files/archive/scala-2.13.3.deb
sudo dpkg -i scala-2.13.3.deb

Check Scala version by using the following command

scala -version
scalac -version

Scala code runner version 2.13.3 -- Copyright 2002-2020, LAMP/EPFL and Lightbend, Inc.
Scala compiler version 2.13.3 -- Copyright 2002-2020, LAMP/EPFL and Lightbend, Inc.

Step 2: [Optional] Testing Scala Sample Program

2.1) Create at test program

Create a test file called HelloWorld.scala:

object HelloWorld
{
    def main(args: Array[String]): Unit = {
        println("Hello, world!")
    }
}

2.2) Compile the test program

scalac HelloWorld.scala

Note: This will create two compiled files: HelloWorld$.class and HelloWorld.class.

2.3) Execute the test program

scala HelloWorld

The output of the above test program should be:

Hello, world!

Note: For addition information on Getting Started with Scala, visit here.

References

http://www.scala-lang.org/