build-jfx-jdk.sh

#!/usr/bin/env bash

#
# To use, unpack a regular JDK somewhere and set JDK_HOME to point to it. The default here expects a JDK 15 early access
# in the same directory but you can set JDK_HOME to anything.
#

JDK_HOME=${JDK_HOME:-$PWD/jdk-15.jdk/Contents/Home}

# 
# Set OUT_DIR to where you want the combined JavaFX/JDK to be:
#

OUT_DIR=$PWD/fxdk.jdk

#
# Then make sure JavaFX JMODs are unpacked to this path, or edit it
# You can get them from here:
#
# https://gluonhq.com/products/javafx/
#
# Or you can compile JavaFX for yourself. Why not, as you're building a custom JDK spin anyway.
#

JFX_JMODS=jfx/build/jmods

echo "Generating to $OUT_DIR"
if [ -d $OUT_DIR ]; then
        rm -rf $OUT_DIR
fi

# The FXDK is a superset of the JDK, so we want all the modules.
# Use --list-modules to print every module in the source JDK, but they come with @something tacked
# on the end, so use awk to strip that off and then paste to join them to a comma separated list.
ALL_MODULES=$( $JDK_HOME/bin/java --list-modules | awk -F@ '{print $1}' | paste -s -d , - )

# And now build the new JDK with all modules + the listed javafx modules
$JDK_HOME/bin/jlink --module-path $JFX_JMODS \
                                    --add-modules javafx.fxml,javafx.web,javafx.media,javafx.swing,$ALL_MODULES \
                                    --bind-services \
                                    --compress=1 \
                                    --order-resources=/module-info.class,@classlist,/java.base/java/lang/ \
                                    --output $OUT_DIR