Cross building for iOS

Before trying to cross build for iOS we strongly recommend that you succeed on building OpenJFX for OS X first.

Download a sample application here

The sample application used here is a simplified version from /rt/apps/experiments/DukePad/modules/calculator (excludes OSGI references and any Java 8 syntax usage).

Besides the Calculator project, the zip file also contains a patch for OpenJFX repository

Install RoboVM

Download RoboVM from http://download.robovm.org/ and unzip it.
Install RoboVM to /opt/robovm directory

Get OpenJFX project, apply the patch and build it

 On the same directory where Calculator.zip was unzipped:

$ mkdir openjfx
$ cd openjfx
$ hg clone http://hg.openjdk.java.net/openjfx/8/graphics/rt
$ cd rt
$ patch -p1 < ../../openjfx.diff
$ gradle -PCOMPILE_TARGETS=ios -PUSE_LIPO=true
 

Note: At the time this wiki was written the iOS build expects the SDK version 7.0 to be available on the system.If you have different version that needs to specified. For example:

$ gradle -PCOMPILE_TARGETS=ios -PUSE_LIPO=true -PIOS_VERSION=6.1

Get robovm-jfx78-compat project and build it

On the same directory where Calculator.zip was unzipped:

$ git clone https://github.com/robovm/robovm-jfx78-compat
$ cd robovm-jfx78-compat
$ mvn install

Build the application code

On the same directory where Calculator.zip was unzipped:

$ cd Calculator
$ ant

This compile the java code to byte code, the use RoboVM to compile the byte code to native code and finally run the application using iPad simulator.

References:

http://blog.software4java.com/?p=41
http://www.robovm.org/docs.html
https://blogs.oracle.com/jfxprg/entry/ipack_the_ios_application_packager