We need an option like "--release" (proposed in implemented in http://openjdk.java.net/jeps/247) to be able to control not only the target bytecode version (which is possible currently with "-jvm-target"), but also limit the API of the JDK in the classpath to the specified Java version. For example, something like "kotlinc -jdk-version 1.8" should not allow to reference "java.lang.Module" even if the JDK in the dependencies has version 9+. To load the version information on different declarations (akin to Kotlin's "@SinceKotlin"), we need to load and parse the "ct.sym" file from the OpenJDK distribution. Sadly, this is not a part of the spec, so this file is absent in other JDK distributions, in which case we should report an error/warning saying this option is only supported when compiling against OpenJDK.…

GraalVM is a high-performance JDK distribution designed to accelerate the execution of applications written in Java and other JVM languages along with suppor...