I got JWM working with GraalVM to produce native binaries =)

Tonsky, you held up your end of the deal -- now I get to hold up mine 😃

Video of fresh run, showing starting from nothing, compiling the JWM app, and then launching it (0:55 seconds in, compilation takes a while lol):

https://user-images.githubusercontent.com/26604994/134990377-b8da88f7-40bf-46ec-9007-2081294e09ae.mp4

## Reproduction

Here's a zipped copy of the whole project, including the built files that contain the required GraalVM configuration:

- [jwm-test.zip](https://github.com/HumbleUI/JWM/files/7239554/jwm-test.zip)

This was done with GraalVM 21.3.0-dev, JDK 17:
```sh
λ java --version
openjdk 17 2021-09-14
OpenJDK Runtime Environment GraalVM CE 21.3.0-dev (build 17+35-jvmci-21.3-b02)
OpenJDK 64-Bit Server VM GraalVM CE 21.3.0-dev (build 17+35-jvmci-21.3-b02, mixed mode, sharing)
```

What I did was set up a basic Gradle Java app, using the `GettingStarted.java` example code:
- https://github.com/HumbleUI/JWM/blob/main/docs/GettingStarted.java

```groovy
plugins {
id 'application'
id 'org.graalvm.buildtools.native' version '0.9.5'
}

repositories {
mavenCentral()
// GraalVM Native plugin, not on Maven yet
// See: https://graalvm.github.io/native-build-tools/0.9.5/gradle-plugin.html
gradlePluginPortal()
// JWM local jar file, at "app/lib/jwm-main.jar"
flatDir {
dirs 'lib'
}
}

dependencies {
implementation name: 'jwm-main'
}

application {
mainClass = 'jwm.test.Application'
}

graalvmNative {
binaries {
main {
verbose = true
}
}
}
```

Trying to build the JWM app and run it normally will throw a segfault.

To fix this, you have to first run the "agent" to profile the GraalVM app and determine what configuration it needs for things like JNI, dynamic behavior, etc:

- https://graalvm.github.io/native-build-tools/0.9.5/gradle-plugin.html#_reflection_support_and_running_with_the_native_agent

```sh
./gradlew -Pagent run # Runs on JVM with native-image-agent.
./gradlew -Pagent nativeCompile # Builds image using configuration acquired by agent.
```

This is broken though, at least for me. It was generating the configuration in:
`app\build\native\agent-output`

But I could see when it was compiling that it was only sourcing config from:
`-H:ConfigurationFileDirectories=app\build\native\generated\generateResourcesConfigFile`

So I just copied all the files from `app\build\native\agent-output` to `app\build\native\generated\generateResourcesConfigFile` and then it worked:


If it's useful at all, below is an output of the compilation task with verbose logging:

Click to view

C:\Users\rayga\Projects\tmp\jwm-test
λ gradlew.bat -Pagent nativeCompile

> Task :app:nativeCompile
[native-image-plugin] Args are: [-cp, C:\Users\rayga\Projects\tmp\jwm-test\app\build\libs\nativecompile-classpath.jar, --no-fallback, --verbose, -H:Path=C:\Users\rayga\Projects\tmp\jwm-test\app\build\native\nativeCompile, -H:Name=app, -H:ConfigurationFileDirectories=C:\Users\rayga\Projects\tmp\jwm-test\app\build\native\generated\generateResourcesConfigFile, --allow-incomplete-classpath, -H:Class=jwm.test.Application]
Executing [
'C:\GraalVM\graalvm-ce-java17-21.3.0-dev\bin\java.exe' \
-XX:+UseJVMCINativeLibrary \
-XX:+UseParallelGC \
-XX:+UnlockExperimentalVMOptions \
-XX:+EnableJVMCI \
-Dtruffle.TrustAllTruffleRuntimeProviders=true \
-Dtruffle.TruffleRuntime=com.oracle.truffle.api.impl.DefaultTruffleRuntime \
-Dgraalvm.ForcePolyglotInvalid=true \
-Dgraalvm.locatorDisabled=true \
-Dsubstratevm.IgnoreGraalVersionCheck=true \
--add-exports=java.base/com.sun.crypto.provider=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.access.foreign=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.event=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.loader=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.logger=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.module=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.org.objectweb.asm=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.org.xml.sax.helpers=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.perf=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.ref=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.util.xml.impl=ALL-UNNAMED \
--add-exports=java.base/jdk.internal.util.xml=ALL-UNNAMED \
--add-exports=java.base/sun.invoke.util=ALL-UNNAMED \
--add-exports=java.base/sun.nio.ch=ALL-UNNAMED \
--add-exports=java.base/sun.reflect.annotation=ALL-UNNAMED \
--add-exports=java.base/sun.reflect.generics.reflectiveObjects=ALL-UNNAMED \
--add-exports=java.base/sun.reflect.generics.repository=ALL-UNNAMED \
--add-exports=java.base/sun.reflect.generics.tree=ALL-UNNAMED \
--add-exports=java.base/sun.security.jca=ALL-UNNAMED \
--add-exports=java.base/sun.security.provider=ALL-UNNAMED \
--add-exports=java.base/sun.security.util=ALL-UNNAMED \
--add-exports=java.base/sun.text.spi=ALL-UNNAMED \
--add-exports=java.base/sun.util.calendar=ALL-UNNAMED \
--add-exports=java.base/sun.util.locale.provider=ALL-UNNAMED \
--add-exports=java.base/sun.util.resources=ALL-UNNAMED \
--add-exports=java.xml.crypto/org.jcp.xml.dsig.internal.dom=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.aarch64=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.amd64=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.code.site=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.code.stack=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.code=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.common=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.hotspot.aarch64=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.hotspot.amd64=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.hotspot=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.meta=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.runtime=ALL-UNNAMED \
--add-exports=jdk.internal.vm.ci/jdk.vm.ci.services=ALL-UNNAMED \
--add-exports=jdk.jfr/jdk.jfr.events=ALL-UNNAMED \
--add-exports=jdk.jfr/jdk.jfr.internal.consumer=ALL-UNNAMED \
--add-exports=jdk.jfr/jdk.jfr.internal.handlers=ALL-UNNAMED \
--add-exports=jdk.jfr/jdk.jfr.internal.jfc=ALL-UNNAMED \
--add-exports=jdk.jfr/jdk.jfr.internal=ALL-UNNAMED \
-Xss10m \
-Xms1g \
-Xmx14g \
-Duser.country=US \
-Duser.language=en \
-Djava.awt.headless=true \
-Dorg.graalvm.version=21.3.0-dev \
-Dorg.graalvm.config=CE \
-Dcom.oracle.graalvm.isaot=true \
-Djava.system.class.loader=com.oracle.svm.hosted.NativeImageSystemClassLoader \
-Xshare:off \
-Djdk.internal.lambda.disableEagerInitialization=true \
-Djdk.internal.lambda.eagerlyInitialize=false \
-Djava.lang.invoke.InnerClassLambdaMetafactory.initializeLambdas=false \
'-javaagent:C:\GraalVM\graalvm-ce-java17-21.3.0-dev\lib\svm\builder\svm.jar' \
-cp \
'C:\GraalVM\graalvm-ce-java17-21.3.0-dev\lib\svm\builder\objectfile.jar;C:\GraalVM\graalvm-ce-java17-21.3.0-dev\lib\svm\builder\pointsto.jar;C:\GraalVM\graalvm-ce-java17-21.3.0-dev\lib\svm\builder\svm.jar' \
--module-path \
'C:\GraalVM\graalvm-ce-java17-21.3.0-dev\lib\truffle\truffle-api.jar' \
'com.oracle.svm.hosted.NativeImageGeneratorRunner$JDK9Plus' \
-imagecp \
'C:\Users\rayga\Projects\tmp\jwm-test\app\build\libs\nativecompile-classpath.jar;C:\GraalVM\graalvm-ce-java17-21.3.0-dev\lib\svm\library-support.jar' \
'-H:Path=C:\Users\rayga\Projects\tmp\jwm-test\app\build\native\nativeCompile' \
-H:FallbackThreshold=0 \
'-H:Path=C:\Users\rayga\Projects\tmp\jwm-test\app\build\native\nativeCompile' \
-H:Name=app \
'-H:ConfigurationFileDirectories=C:\Users\rayga\Projects\tmp\jwm-test\app\build\native\generated\generateResourcesConfigFile' \
-H:+AllowIncompleteClasspath \
-H:Class=jwm.test.Application \
'-H:CLibraryPath=C:\GraalVM\graalvm-ce-java17-21.3.0-dev\lib\svm\clibraries\windows-amd64'
]
[app:28380] classlist: 2,552.43 ms, 0.96 GB
[app:28380] (cap): 5,273.75 ms, 0.96 GB
[app:28380] setup: 7,129.85 ms, 0.96 GB
[app:28380] (clinit): 221.34 ms, 2.37 GB
[app:28380] (typeflow): 3,175.61 ms, 2.37 GB
[app:28380] (objects): 5,393.20 ms, 2.37 GB
[app:28380] (features): 652.02 ms, 2.37 GB
[app:28380] analysis: 10,019.95 ms, 2.37 GB
[app:28380] universe: 973.36 ms, 2.37 GB
[app:28380] (parse): 560.62 ms, 2.37 GB
[app:28380] (inline): 815.50 ms, 2.37 GB
[app:28380] (compile): 7,547.62 ms, 4.67 GB
[app:28380] compile: 9,666.75 ms, 4.67 GB
[app:28380] image: 1,291.57 ms, 4.67 GB
[app:28380] write: 2,160.76 ms, 4.67 GB
[app:28380] [total]: 34,818.08 ms, 4.67 GB
# Printing build artifacts to: C:\Users\rayga\Projects\tmp\jwm-test\app\build\native\nativeCompile\app.build_artifacts.txt
[native-image-plugin] Native Image written to: C:\Users\rayga\Projects\tmp\jwm-test\app\build\native\nativeCompile