millfork/COMPILING.md

Build instructions

Java compatibility note

It is recommended to use JDK 1.8 for building Millfork.
If you have multiple Java versions installed, enter
set JAVA_HOME=PATH_TO_JAVA\bin (Windows)
export JAVA_HOME=PATH_TO_JAVA/bin (Mac/Linux)
(where PATH_TO_JAVA is a path to one of your JDK installations) into the command line before running sbt to choose a JDK.

Building without tests

Setting up the test suite for Millfork is tricky, so if you don't need the tests, you can remove them.

Prerequisites

• JDK 1.8

• sbt

Steps

• remove all test dependencies from build.sbt:

  "org.scalatest" %% "scalatest"
  "com.codingrodent.microprocessor" % "Z80Processor"
  "NeatMonster" % "Intel8086"
  "com.loomcom.symon" % "symon"
  "com.grapeshot" % "halfnes"
  "eu.rekawek.coffeegb" % "coffee-gb"
  "roug.org.osnine" % "osnine-core"
  

• navigate to the project directory

• run sbt 'set test in assembly := {}' compile (sbt "set test in assembly := {}" compile on Windows) to compile the project

• run sbt 'set test in assembly := {}' assembly (sbt "set test in assembly := {}" assembly on Windows) to build the executable jar file, it should appear in target/scala-2.12

Building with tests

Test suite is useful if you plan on modifying the compiler. Some test dependencies need manual installation.

Prerequisites

• JDK 1.8 with Nashorn (tests don't work on newer versions)

• sbt

• Maven

Steps

• download the dependencies that are not available in a central repository:

    https://github.com/sethm/symon/tree/71905fdb1998ee4f142260879504bc46cf27648f
    https://github.com/andrew-hoffman/halfnes/tree/061
    https://github.com/trekawek/coffee-gb/tree/coffee-gb-1.0.0
    https://github.com/sorenroug/osnine-java/tree/1b4e059c5886fe01e8901c70684f7eedefe65010
  

• for each of them, run maven package and maven install

• navigate to the project directory

• run sbt compile to compile the project

• run sbt assemble to build the executable jar file, it should appear in target/scala-2.12

Building a native executable

This is experimental.

Prerequisites

• an executable jar with Millfork (see above)

• GraalVM 19 or later

• native-image

• other tools required by native-image, appropriate for your operating system and GraalVM version (for example, Windows SDK 7.1 on Windows)

• a lot of RAM

Steps

• navigate to the directory containing the jar, most likely target/scala-2.12

• run native-image -jar millfork.jar to build a native executable for your operating system