Graalvm

In short Run the app java -agentlib:native-image-agent=config-output-dir=./graalcnf/ -jar target/app.jar Copy the generated files from ./graalcnf/ to the project under src/main/resources/META-INF/native-image/<groupId>/<artifactId>/ Build the native image mvn -ntp package -Pnative -DskipTests TLDR Native Image needs reachability metadata so it can include dynamic features your app uses at run time (reflection, resources, proxies, serialization, JNI). The simplest way to get this metadata is to run your app on the JVM with the Native Image Agent and then use the generated JSON files during the native build. ...

Graalvm is AOT compilation advanced JDK, I am following the project since 2019, Project’s first target was AOT now lately I start seeing more about multi language support. It supports Python, JS, Ruby, Wasm more details here And WASM is getting popular day by day, WASM is a new binary file for web. There are many cool examples of WASM Doom game in the browser with graalvm Postgres database in the browser I was wondering how to run WASM code in simple spring boot application, ...

In short I am explaining why we should use ./mvnw -Pnative native:compile and what error comes otherwise and why. I was preparing this answer. And I was having problem with the class not found errors while building because I was using this command ./mvnw native:compile ... Error: Please specify class (or <module>/<mainclass>) containing the main entry point method. (see --help) [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 3.448 s [INFO] Finished at: 2024-09-01T21:24:32+01:00 [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.graalvm.buildtools:native-maven-plugin:0.10.2:compile (default-cli) on project env-variables: Execution of C:\sdkman\candidates\java\21.0.2-graal\bin\native-image.cmd @target\tmp\native-image-2373453772169200185.args returned non-zero result -> [Help 1] [ERROR] Then remembered the profile thing and finally get rid of this error, used below command ...

I wanted to test ktor.io with graalvm build, main problem is all code I found using gradle and my project is using mvn here is the code. like other modules I needed to create reflect config json, otherwise ktor serialize is not working properly with graal and when I send a request to “/hello” endpoint I got empty response. I tried to write myself but did not work and at the end I used command below ...

“mvn package -Pnative” builds the native image from quarkus project. Important step is we have to run that mvn command from “native tools commnad” of visual studio. If you run the command from regular command prompt you get the error below [INFO] [io.quarkus.deployment.pkg.steps.NativeImageBuildRunner] C:\Program Files\GraalVM\graalvm-ce-java17-21.3.0\bin\native-image.cmd -J-Djava.util.logging.manager=org.jboss.logmanager.LogManager -J-Dsun.nio.ch.maxUpdateArraySize=100 -J-Dvertx.logger-delegate-factory-class-name=io.quarkus.vertx.core.runtime.VertxLogDelegateFactory -J-Dvertx.disableDnsResolver=true -J-Dio.netty.leakDetection.level=DISABLED -J-Dio.netty.allocator.maxOrder=3 -J-Duser.language=en -J-Duser.country=US -J-Dfile.encoding=UTF-8 -H:InitialCollectionPolicy=com.oracle.svm.core.genscavenge.CollectionPolicy\$BySpaceAndTime -H:+JNI -H:+AllowFoldMethods -H:FallbackThreshold=0 -H:+ReportExceptionStackTraces -H:-AddAllCharsets -H:EnableURLProtocols=http -H:-UseServiceLoaderFeature -H:+StackTrace chinese-lang-1.0.0-SNAPSHOT-runner -jar chinese-lang-1.0.0-SNAPSHOT-runner.jar [chinese-lang-1.0.0-SNAPSHOT-runner:6432] classlist: 5,366.54 ms, 0.96 GB [chinese-lang-1.0.0-SNAPSHOT-runner:6432] setup: 943.11 ms, 0.96 GB Error: Default native-compiler executable 'cl.exe' not found via environment variable PATH Error: To prevent native-toolchain checking provide command-line option -H:-CheckToolchain com.oracle.svm.core.util.UserError$UserException: Default native-compiler executable 'cl.exe' not found via environment variable PATH To prevent native-toolchain checking provide command-line option -H:-CheckToolchain at com.oracle.svm.core.util.UserError.abort(UserError.java:144) at com.oracle.svm.hosted.c.codegen.CCompilerInvoker.addSkipCheckingInfo(CCompilerInvoker.java:104) at com.oracle.svm.hosted.c.codegen.CCompilerInvoker.<init>(CCompilerInvoker.java:72) at com.oracle.svm.hosted.c.codegen.CCompilerInvoker$WindowsCCompilerInvoker.<init>(CCompilerInvoker.java:110) at com.oracle.svm.hosted.c.codegen.CCompilerInvoker.create(CCompilerInvoker.java:84) at com.oracle.svm.hosted.NativeImageGenerator.setupNativeImage(NativeImageGenerator.java:864) at com.oracle.svm.hosted.NativeImageGenerator.doRun(NativeImageGenerator.java:527) at com.oracle.svm.hosted.NativeImageGenerator.run(NativeImageGenerator.java:488) at com.oracle.svm.hosted.NativeImageGeneratorRunner.buildImage(NativeImageGeneratorRunner.java:403) at com.oracle.svm.hosted.NativeImageGeneratorRunner.build(NativeImageGeneratorRunner.java:569) at com.oracle.svm.hosted.NativeImageGeneratorRunner.main(NativeImageGeneratorRunner.java:122) at com.oracle.svm.hosted.NativeImageGeneratorRunner$JDK9Plus.main(NativeImageGeneratorRunner.java:599) [chinese-lang-1.0.0-SNAPSHOT-runner:6432] [total]: 6,384.40 ms, 0.96 GB # Printing build artifacts to: C:\Users\ozkan\projects\chinese-lang\target\chinese-lang-1.0.0-SNAPSHOT-native-image-source-jar\chinese-lang-1.0.0-SNAPSHOT-runner.build_artifacts.txt Error: Image build request failed with exit status 1 [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 22.552 s [INFO] Finished at: 2021-11-03T21:07:37Z [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal io.quarkus.platform:quarkus-maven-plugin:2.4.1.Final:build (default) on project chinese-lang: Failed to build quarkus application: io.quarkus.builder.BuildException: Build failure: Build failed due to errors [ERROR] [error]: Build step io.quarkus.deployment.pkg.steps.NativeImageBuildStep#build threw an exception: java.lang.RuntimeException: Failed to build native image [ERROR] at io.quarkus.deployment.pkg.steps.NativeImageBuildStep.build(NativeImageBuildStep.java:233) [ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) [ERROR] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [ERROR] at java.base/java.lang.reflect.Method.invoke(Method.java:568) [ERROR] at io.quarkus.deployment.ExtensionLoader$2.execute(ExtensionLoader.java:821) [ERROR] at io.quarkus.builder.BuildContext.run(BuildContext.java:277) [ERROR] at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18) [ERROR] at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2449) [ERROR] at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1478) [ERROR] at java.base/java.lang.Thread.run(Thread.java:833) [ERROR] at org.jboss.threads.JBossThread.run(JBossThread.java:501) [ERROR] Caused by: java.lang.RuntimeException: Image generation failed. Exit code: 1 [ERROR] at io.quarkus.deployment.pkg.steps.NativeImageBuildStep.imageGenerationFailed(NativeImageBuildStep.java:369) [ERROR] at io.quarkus.deployment.pkg.steps.NativeImageBuildStep.build(NativeImageBuildStep.java:213) [ERROR] ... 11 more [ERROR] -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. If you run the command from native tools result is below ...