Verifying Java Installs and Other Prerequisites

This section lists various prerequisites needed depending on the operating system and how to verify Java installs.

Install Java

Download and install Java JDK 11 (either Oracle or OpenJDK).

Verify Java Version

Ensure that you are running Java 11. To check, run the following command at the command prompt and make sure that the version displayed is Java 11:

java -version

The command above should output something like this:

openjdk version "11.0.8"

Verify JAVA_HOME environment variable is set correctly

Make sure that you have a JAVA_HOME environment variable that points to the root of the JDK install directory. To check the value set for JAVA_HOME, enter the following command at the command prompt:

env | grep JAVA_HOME

How to set the JAVA_HOME environment variable

To set JAVA_HOME on a Unix/Linux System

Korn and bash shells:

export JAVA_HOME=jdk-install-dir
export PATH=$JAVA_HOME/bin:$PATH

Bourne shell:

JAVA_HOME=jdk-install-dir
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH

C shell:

setenv JAVA_HOME jdk-install-dir
setenv PATH $JAVA_HOME/bin:$PATH
export PATH=$JAVA_HOME/bin:$PATH

OS X Prerequisite

For OS X users, the latest openssl formula needs to be installed via homebrew:

brew install openssl

Linux Prerequisite

The library libaio is required by the Authoring install. Please note that some Linux distributions does not install the library libaio by default and so, may need to be installed. You may get the following error when starting up Studio:

error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory

To install libaio for Debian-based Linux distros: sudo apt install libaio1

To install libaio for RedHat-based Linux distros: yum install libaio
For Linux users, some of the scripts uses lsof. Please note that some Linux distributions does not come with lsof pre-installed and so, may need to be installed.

To install lsof for Debian-based Linux distros: apt-get install lsof

To install lsof for RedHat-based Linux distros: yum install lsof
The library libncurses5 is required for the Authoring install and the restore script. You may get the following error when running an Authoring install or the restore script without the libncurses5 library installed:

error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory

To install the library libncurses5, use the following commands:

On Debian-based Linux distros: sudo apt install libncurses5

On RHEL, CentOS: sudo yum install ncurses-compat-libs

On Fedora 22 and newer version: sudo dnf install ncurses-compat-libs

Windows Prerequisite

For Windows users, WSL 2 needs to be installed. All CrafterCMS scripts/commands to be executed and items that needs to be downloaded and installed needs to be in WSL 2.

Follow the instructions here to install WSL 2.

Building with Gradle Prerequisites

For building with Gradle for installing CrafterCMS, the following must be installed in your system:

On Linux/Windows WSL 2

Java 11
Git 2.20.1+
Maven 3.3.x+
make and GCC
- For Debian based distributions (such as Ubuntu), make and GCC can be installed through build-essential
  sudo apt install build-essential
- For RHEL based distributions (such as CentOS), make and GCC can be installed through “Development Tools”
  yum groupinstall "Development Tools"

On macOS

Java 11
Git 2.20.1+
Maven 3.3.x+

make and GCC, which can be installed from XCode Command Line Tools

xcode-select --install

For macOS Catalina, a failure may occur with node-gyp when building like below:

[ERROR] Building: /Users/myuser/craftercms/src/studio/target/node/node /Users/myuser/craftercms/src/studio-ui/ui/scss/node_modules/node-gyp/bin/node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=

See https://github.com/nodejs/node-gyp/blob/master/macOS_Catalina.md for more information on resolving the issue.