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Use Native Build Tools
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‎.github/workflows/native-image-wasm-javac.yml

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@@ -40,5 +40,7 @@ jobs:
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- name: Run 'native-image/wasm-javac'
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run: |
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cd native-image/wasm-javac
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./build-webpage.sh
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./run.sh
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mvn --no-transfer-progress -Pnative package
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mvn --no-transfer-progress -Pjavacweb package
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node target/javac.js HelloWasm.java
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java HelloWasm

‎native-image/wasm-javac/HelloWasm.java

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/*
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* Copyright (c) 2025, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* The Universal Permissive License (UPL), Version 1.0
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*
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* Subject to the condition set forth below, permission is hereby granted to any
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* person obtaining a copy of this software, associated documentation and/or
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* data (collectively the "Software"), free of charge and under any and all
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* copyright rights in the Software, and any and all patent rights owned or
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* freely licensable by each licensor hereunder covering either (i) the
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* unmodified Software as contributed to or provided by such licensor, or (ii)
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* the Larger Works (as defined below), to deal in both
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*
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* (a) the Software, and
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*
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* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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* one is included with the Software each a "Larger Work" to which the Software
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* is contributed by such licensors),
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*
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* without restriction, including without limitation the rights to copy, create
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* derivative works of, display, perform, and distribute the Software and make,
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* use, sell, offer for sale, import, export, have made, and have sold the
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* Software and the Larger Work(s), and to sublicense the foregoing rights on
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* either these or other terms.
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*
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* This license is subject to the following condition:
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*
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* The above copyright notice and either this complete permission notice or at a
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* minimum a reference to the UPL must be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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public class HelloWasm {
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public static void main(String[] args) {
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System.out.println("Hello from WebAssembly generated with GraalVM!");
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}
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}

‎native-image/wasm-javac/HelloWorld.java

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‎native-image/wasm-javac/build-webpage.sh

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‎native-image/wasm-javac/pom.xml

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</properties>
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<build>
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<pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.graalvm.buildtools</groupId>
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<artifactId>native-maven-plugin</artifactId>
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<version>0.10.6</version>
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<extensions>true</extensions>
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<executions>
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<execution>
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<id>build-native</id>
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<goals>
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<goal>compile-no-fork</goal>
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</goals>
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<phase>package</phase>
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</execution>
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</executions>
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<configuration>
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<buildArgs>
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<buildArg>--tool:svm-wasm</buildArg><!-- enable WebAssembly backend -->
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<buildArg>-g</buildArg><!-- include debug names in Wasm module -->
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</buildArgs>
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</configuration>
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</plugin>
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</plugins>
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</pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<groupId>someGroupId</groupId>
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<version>1.0</version>
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<scope>system</scope>
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<systemPath>${java.home}/lib/svm/tools/svm-wasm/builder/svm-wasm-api.jar</systemPath>
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<systemPath>
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${java.home}/lib/svm/tools/svm-wasm/builder/svm-wasm-api.jar
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</systemPath>
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</dependency>
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</dependencies>
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<profiles>
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<profile>
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<id>native</id>
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<build>
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<plugins>
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<plugin>
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<groupId>org.graalvm.buildtools</groupId>
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<artifactId>native-maven-plugin</artifactId>
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<configuration>
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<mainClass>com.example.JavacMain</mainClass>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</profile>
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<profile>
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<id>javacweb</id>
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<build>
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<plugins>
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<plugin>
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<groupId>org.graalvm.buildtools</groupId>
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<artifactId>native-maven-plugin</artifactId>
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<configuration>
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<mainClass>com.example.WebMain</mainClass>
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<imageName>../web/javac</imageName>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</profile>
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</profiles>
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</project>

‎native-image/wasm-javac/run.sh

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