Add a sharedLibrary configuration option for Gradle plugin

docs/src/docs/asciidoc/gradle-plugin.adoc

@@ -146,6 +146,8 @@ nativeBuild {
   verbose = true // Add verbose output, defaults to false
   fallback = true // Sets the fallback mode of native-image, defaults to false
   server = true // Sets the server mode, defaults to false
+  sharedLibrary = false // Determines if image is a shared library, defaults to false if `java-library` plugin isn't included
+
   systemProperties = [name1: 'value1', name2: 'value2'] // Sets the system properties to use for the native image builder
   configurationFileDirectories.from(file('src/my-config')) // Adds a native image configuration file directory, containing files like reflection configuration
 
@@ -171,6 +173,8 @@ nativeBuild {
   verbose.set(true) // Add verbose output, defaults to false
   fallback.set(true) // Sets the fallback mode of native-image, defaults to false
   server.set(true) // Sets the server mode, defaults to false
+  sharedLibrary.set(false) // Determines if image is a shared library, defaults to false if `java-library` plugin isn't included
+
   systemProperties.putAll(mapOf(name1 to "value1", name2 to "value2")) // Sets the system properties to use for the native image builder
   configurationFileDirectories.from(file("src/my-config")) // Adds a native image configuration file directory, containing files like reflection configuration
 

native-gradle-plugin/src/functionalTest/groovy/org/graalvm/buildtools/gradle/JavaLibraryFunctionalTest.groovy

@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * The Universal Permissive License (UPL), Version 1.0
+ *
+ * Subject to the condition set forth below, permission is hereby granted to any
+ * person obtaining a copy of this software, associated documentation and/or
+ * data (collectively the "Software"), free of charge and under any and all
+ * copyright rights in the Software, and any and all patent rights owned or
+ * freely licensable by each licensor hereunder covering either (i) the
+ * unmodified Software as contributed to or provided by such licensor, or (ii)
+ * the Larger Works (as defined below), to deal in both
+ *
+ * (a) the Software, and
+ *
+ * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
+ * one is included with the Software each a "Larger Work" to which the Software
+ * is contributed by such licensors),
+ *
+ * without restriction, including without limitation the rights to copy, create
+ * derivative works of, display, perform, and distribute the Software and make,
+ * use, sell, offer for sale, import, export, have made, and have sold the
+ * Software and the Larger Work(s), and to sublicense the foregoing rights on
+ * either these or other terms.
+ *
+ * This license is subject to the following condition:
+ *
+ * The above copyright notice and either this complete permission notice or at a
+ * minimum a reference to the UPL must be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package org.graalvm.buildtools.gradle
+
+import org.graalvm.buildtools.gradle.fixtures.AbstractFunctionalTest
+
+class JavaLibraryFunctionalTest extends AbstractFunctionalTest {
+
+    def "can build a native image for a simple library"() {
+        gradleVersion = version
+
+        def libExt = ""
+        if (IS_LINUX) {
+            libExt = ".so"
+        } else if (IS_WINDOWS) {
+            libExt = ".dll"
+        } else if (IS_MAC) {
+            libExt = ".dylib"
+        }
+
+        def library = file("build/native/nativeBuild/java-library" + libExt)
+        debug  = true
+
+        given:
+        withSample("java-library")
+
+        when:
+        run 'nativeBuild'
+
+        then:
+        tasks {
+            succeeded ':jar', ':nativeBuild'
+            doesNotContain ':build'
+        }
+
+        outputContains "-H:+SharedLibrary"
+
+        and:
+        library.exists()
+
+        where:
+        version << TESTED_GRADLE_VERSIONS
+    }
+}

native-gradle-plugin/src/main/java/org/graalvm/buildtools/gradle/NativeImagePlugin.java

@@ -134,6 +134,8 @@ private void configureJavaProject(Project project, Provider<NativeImageService>
                 project.getExtensions().findByType(JavaApplication.class).getMainClass()
         ));
 
+        project.getPlugins().withId("java-library", p -> buildExtension.getSharedLibrary().convention(true));
+
         registerServiceProvider(project, nativeImageServiceProvider);
 
         // Register Native Image tasks

native-gradle-plugin/src/main/java/org/graalvm/buildtools/gradle/dsl/NativeImageOptions.java

@@ -177,6 +177,14 @@ public abstract class NativeImageOptions {
     @Input
     public abstract Property<Boolean> getAgent();
 
+    /**
+     * Gets the value which determines if shared library is being built.
+     *
+     * @return The value which determines if shared library is being built.
+     */
+    @Input
+    public abstract Property<Boolean> getSharedLibrary();
+
     /**
      * Returns the toolchain used to invoke native-image. Currently pointing
      * to a Java launcher due to Gradle limitations.
@@ -210,6 +218,7 @@ public NativeImageOptions(ObjectFactory objectFactory,
         getFallback().convention(false);
         getVerbose().convention(false);
         getAgent().convention(false);
+        getSharedLibrary().convention(false);
         getImageName().convention(defaultImageName);
         getJavaLauncher().convention(
                 toolchains.launcherFor(spec -> {

native-gradle-plugin/src/main/java/org/graalvm/buildtools/gradle/internal/NativeImageCommandLineProvider.java

@@ -105,6 +105,7 @@ public List<String> asArguments() {
         appendBooleanOption(cliArgs, options.getFallback().map(NEGATE), "--no-fallback");
         appendBooleanOption(cliArgs, options.getVerbose(), "--verbose");
         appendBooleanOption(cliArgs, options.getServer(), "-Dcom.oracle.graalvm.isaot=true");
+        appendBooleanOption(cliArgs, options.getSharedLibrary(), "--shared");
         if (getOutputDirectory().isPresent()) {
             cliArgs.add("-H:Path=" + getOutputDirectory().get());
         }

native-gradle-plugin/src/testFixtures/groovy/org/graalvm/buildtools/gradle/fixtures/AbstractFunctionalTest.groovy

@@ -70,6 +70,10 @@ abstract class AbstractFunctionalTest extends Specification {
     String gradleVersion
     boolean debug
 
+    boolean IS_WINDOWS = System.getProperty("os.name", "unknown").contains("Windows");
+    boolean IS_LINUX = System.getProperty("os.name", "unknown").contains("Linux");
+    boolean IS_MAC = System.getProperty("os.name", "unknown").contains("Mac");
+
     private StringWriter outputWriter
     private StringWriter errorOutputWriter
     private String output

native-maven-plugin/src/functionalTest/groovy/org/graalvm/buildtools/maven/JavaLibraryFunctionalTest.groovy

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * The Universal Permissive License (UPL), Version 1.0
+ *
+ * Subject to the condition set forth below, permission is hereby granted to any
+ * person obtaining a copy of this software, associated documentation and/or
+ * data (collectively the "Software"), free of charge and under any and all
+ * copyright rights in the Software, and any and all patent rights owned or
+ * freely licensable by each licensor hereunder covering either (i) the
+ * unmodified Software as contributed to or provided by such licensor, or (ii)
+ * the Larger Works (as defined below), to deal in both
+ *
+ * (a) the Software, and
+ *
+ * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
+ * one is included with the Software each a "Larger Work" to which the Software
+ * is contributed by such licensors),
+ *
+ * without restriction, including without limitation the rights to copy, create
+ * derivative works of, display, perform, and distribute the Software and make,
+ * use, sell, offer for sale, import, export, have made, and have sold the
+ * Software and the Larger Work(s), and to sublicense the foregoing rights on
+ * either these or other terms.
+ *
+ * This license is subject to the following condition:
+ *
+ * The above copyright notice and either this complete permission notice or at a
+ * minimum a reference to the UPL must be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package org.graalvm.buildtools.maven
+
+class JavaLibraryFunctionalTest extends AbstractGraalVMMavenFunctionalTest {
+    def "can build native image of a library with the Maven plugin"() {
+        withSample("java-library")
+
+        def libExt = ""
+        if (IS_LINUX) {
+            libExt = ".so"
+        } else if (IS_WINDOWS) {
+            libExt = ".dll"
+        } else if (IS_MAC) {
+            libExt = ".dylib"
+        }
+
+        def library = file("target/java-library" + libExt)
+
+        when:
+        mvn '-Pnative', '-DskipTests', 'package'
+
+        then:
+        buildSucceeded
+        outputContains "--shared"
+        and:
+        library.exists()
+
+    }
+}

native-maven-plugin/src/testFixtures/groovy/org/graalvm/buildtools/maven/AbstractGraalVMMavenFunctionalTest.groovy

@@ -56,6 +56,10 @@ abstract class AbstractGraalVMMavenFunctionalTest extends Specification {
 
     MavenExecutionResult result
 
+    boolean IS_WINDOWS = System.getProperty("os.name", "unknown").contains("Windows");
+    boolean IS_LINUX = System.getProperty("os.name", "unknown").contains("Linux");
+    boolean IS_MAC = System.getProperty("os.name", "unknown").contains("Mac");
+
     def setup() {
         executor = new IsolatedMavenExecutor(
                 new File(System.getProperty("java.executable")),

samples/java-library/build.gradle

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * The Universal Permissive License (UPL), Version 1.0
+ *
+ * Subject to the condition set forth below, permission is hereby granted to any
+ * person obtaining a copy of this software, associated documentation and/or
+ * data (collectively the "Software"), free of charge and under any and all
+ * copyright rights in the Software, and any and all patent rights owned or
+ * freely licensable by each licensor hereunder covering either (i) the
+ * unmodified Software as contributed to or provided by such licensor, or (ii)
+ * the Larger Works (as defined below), to deal in both
+ *
+ * (a) the Software, and
+ *
+ * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
+ * one is included with the Software each a "Larger Work" to which the Software
+ * is contributed by such licensors),
+ *
+ * without restriction, including without limitation the rights to copy, create
+ * derivative works of, display, perform, and distribute the Software and make,
+ * use, sell, offer for sale, import, export, have made, and have sold the
+ * Software and the Larger Work(s), and to sublicense the foregoing rights on
+ * either these or other terms.
+ *
+ * This license is subject to the following condition:
+ *
+ * The above copyright notice and either this complete permission notice or at a
+ * minimum a reference to the UPL must be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+plugins {
+    id 'java-library'
+    id 'org.graalvm.buildtools.native'
+}
+
+repositories {
+    mavenCentral()
+}
+
+def junitVersion = providers.gradleProperty('junit.jupiter.version')
+    .forUseAtConfigurationTime()
+    .get()
+
+dependencies {
+    testImplementation(platform("org.junit:junit-bom:${junitVersion}"))
+    testImplementation('org.junit.jupiter:junit-jupiter')
+}
+
+nativeBuild {
+    verbose=true
+}
+
+test {
+    useJUnitPlatform()
+}

samples/java-library/gradle.properties

@@ -0,0 +1,3 @@
+native.gradle.plugin.version = 0.9.3-SNAPSHOT
+junit.jupiter.version = 5.7.2
+junit.platform.version = 1.7.2