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Packaging SAP GUI for macOS with Java 11 support

December 14, 2018 3 comments

A while back, I wrote a post on building a SAP GUI installer for macOS, where SAP GUI needed to have Oracle’s Java 8 JDK as a pre-requisite. Since then Oracle has made an announcement that the use of Oracle’s Java 11 JDK is no longer free if you’re using it for production work.

One of the consequences of that decision by Oracle is that SAP GUI 7.50 rev 5 is the first version of SAP GUI to support Java 11. However, the SAP GUI developers are now recommending the use of OpenJDK 11 in place of Oracle’s Java JDK 11. More specifically, the SAP GUI folks are recommending the use of SAP’s own SapMachine Java JDK 11 release.

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Meanwhile, a Java library named JavaFX used by SAP GUI is no longer being bundled as part of Java 11. Instead, JavaFX has been split off into its own open source project called OpenJFX and is now a separate install.

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What do SapMachine JDK 11 and JavaFX have in common? Among other things, neither have a native installer for macOS. Instead, each is distributed via compressed files.

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Installation is performed by uncompressing into the following directory on macOS:

/Library/Java/JavaVirtualMachines

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That said, SAP GUI also still works with Oracle’s Java JDK 8 as of the release of SAP GUI 7.50 rev 5. JavaFX is bundled with Java JDK 8, so installing Oracle’s Java JDK 8 handles both the Java and JavaFX requirements.

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With all the changes, how should SAP GUI now be packaged for installation? Without question, the main challenge for deployment here is going to be the Java component. In my testing, which was limited to “Launch SAP GUI and see if it runs”, I found SAP GUI 7.50 rev 5 is able to run on the following Java releases:

If using any Java 11 release, OpenJFX will need to be installed for SAP GUI to successfully run.

With this in mind, it’s possible to build a package that does the following:

  1. Detects if Java is installed
  2. Detects if JavaFX is installed
  3. If Java is not installed, install the latest release of SapMachine JDK.
  4. If JavaFX is not installed, install the latest release of OpenJFX.
  5. Verifies that both Java and JavaFX are installed.
  6. If both Java and JavaFX are installed, install SAP GUI

For more details, please see below the jump.

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