oracle
[GR-54159] Fontconfig head is null, check your fonts or fonts configuration
Describe GraalVM and your environment :
- GraalVM version or commit id if built from source: [Oracle GraalVM 22.0.1+8.1 (build 22.0.1+8-jvmci-b01)]
- CE or EE: [CE]
- JDK version: [21]
- OS and OS Version: [Debian12.5]
- Architecture: [amd64]
- The output of
java -Xinternalversion:
Java HotSpot(TM) 64-Bit Server VM (22.0.1+8-jvmci-b01) for linux-amd64 JRE (22.0.1+8-jvmci-b01), built on 2024-03-14T00:30:39Z by "buildslave" with gcc 13.2.0
Describe the issue I have a simple swing program that uses native-image to generate an executable file. I found that something went wrong when it was run. The error message was "Caused by: java.lang.RuntimeException: Fontconfig head is null, check your fonts or fonts configuration"
Code snippet or code repository that reproduces the issue
package org.example;
import java.awt.*;
import javax.swing.*;
public class SwingSample {
public static void main(String[] args) throws Exception {
if (System.getProperty("rrr","").equals("")) {
System.setProperty("java.home",".");
}
SwingUtilities.invokeAndWait(() -> {
JFrame frame = new JFrame("Hello World");
JButton button = new JButton("Hello");
button.addActionListener(e -> {
System.out.printf("Hello, World!%n");
});
JPanel panel = new JPanel(new FlowLayout());
panel.add(button);
frame.add(panel);
frame.setSize(400, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
});
}
}
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>jdk21graalvm</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>21</maven.compiler.source>
<maven.compiler.target>21</maven.compiler.target>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.example.SwingSample</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
Steps to reproduce the issue
- mvn clean package
- java -Drrr=123 -agentlib:native-image-agent=config-output-dir=./cdir -jar jdk21graalvm-1.0-SNAPSHOT.jar
- native-image -jar jdk21graalvm-1.0-SNAPSHOT.jar -H:+ReportExceptionStackTraces --no-fallback --link-at-build-time -H:ConfigurationFileDirectories=./cdir -H:+AddAllCharsets --report-unsupported-elements-at-runtime --enable-url-protocols=https,http
After the build is completed, the following exception occurs when executing it
Exception in thread "main" java.lang.reflect.InvocationTargetException
at [email protected]/java.awt.EventQueue.invokeAndWait(EventQueue.java:1371)
at [email protected]/java.awt.EventQueue.invokeAndWait(EventQueue.java:1346)
at [email protected]/javax.swing.SwingUtilities.invokeAndWait(SwingUtilities.java:1480)
at org.example.SwingSample.main(SwingSample.java:9)
at [email protected]/java.lang.invoke.LambdaForm$DMH/sa346b79c.invokeStaticInit(LambdaForm$DMH)
Caused by: java.lang.RuntimeException: Fontconfig head is null, check your fonts or fonts configuration
at [email protected]/sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1263)
at [email protected]/sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:221)
at [email protected]/sun.awt.FontConfiguration.init(FontConfiguration.java:105)
at [email protected]/sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:696)
at [email protected]/sun.font.SunFontManager$2.run(SunFontManager.java:352)
at [email protected]/sun.font.SunFontManager$2.run(SunFontManager.java:309)
at [email protected]/java.security.AccessController.executePrivileged(AccessController.java:128)
at [email protected]/java.security.AccessController.doPrivileged(AccessController.java:319)
at [email protected]/sun.font.SunFontManager.<init>(SunFontManager.java:309)
at [email protected]/sun.awt.FcFontManager.<init>(FcFontManager.java:35)
at [email protected]/sun.awt.X11FontManager.<init>(X11FontManager.java:55)
at [email protected]/sun.font.PlatformFontInfo.createFontManager(PlatformFontInfo.java:37)
at [email protected]/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:51)
at [email protected]/sun.font.SunFontManager.getInstance(SunFontManager.java:242)
at [email protected]/sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:260)
at [email protected]/sun.swing.SwingUtilities2.getFontMetrics(SwingUtilities2.java:1242)
at [email protected]/javax.swing.JComponent.getFontMetrics(JComponent.java:1700)
at [email protected]/javax.swing.plaf.basic.BasicGraphicsUtils.getPreferredButtonSize(BasicGraphicsUtils.java:360)
at [email protected]/javax.swing.plaf.basic.BasicButtonUI.getPreferredSize(BasicButtonUI.java:542)
at [email protected]/javax.swing.JComponent.getPreferredSize(JComponent.java:1734)
at [email protected]/java.awt.FlowLayout.layoutContainer(FlowLayout.java:612)
at [email protected]/java.awt.Container.layout(Container.java:1541)
at [email protected]/java.awt.Container.doLayout(Container.java:1530)
at [email protected]/java.awt.Container.validateTree(Container.java:1725)
at [email protected]/java.awt.Container.validateTree(Container.java:1734)
at [email protected]/java.awt.Container.validateTree(Container.java:1734)
at [email protected]/java.awt.Container.validateTree(Container.java:1734)
at [email protected]/java.awt.Container.validateTree(Container.java:1734)
at [email protected]/java.awt.Container.validate(Container.java:1660)
at [email protected]/java.awt.Container.validateUnconditionally(Container.java:1697)
at [email protected]/java.awt.Window.show(Window.java:1055)
at [email protected]/java.awt.Component.show(Component.java:1728)
at [email protected]/java.awt.Component.setVisible(Component.java:1675)
at [email protected]/java.awt.Window.setVisible(Window.java:1036)
at com.zgm.SwingSample.lambda$main$1(SwingSample.java:34)
at [email protected]/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:308)
at [email protected]/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773)
at [email protected]/java.awt.EventQueue$4.run(EventQueue.java:720)
at [email protected]/java.awt.EventQueue$4.run(EventQueue.java:714)
at [email protected]/java.security.AccessController.executePrivileged(AccessController.java:128)
at [email protected]/java.security.AccessController.doPrivileged(AccessController.java:400)
at [email protected]/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
at [email protected]/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
at [email protected]/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at [email protected]/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at [email protected]/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at [email protected]/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at [email protected]/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at [email protected]/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
at org.graalvm.nativeimage.builder/com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine(PlatformThreads.java:853)
at org.graalvm.nativeimage.builder/com.oracle.svm.core.thread.PlatformThreads.threadStartRoutine(PlatformThreads.java:829)
Hi @zgmgt, thank you for reaching out to us!
I am trying to reproduce the issue but I am getting a different error. Could you please share with me the full pom file you're using? Thank you!
Hi @zgmgt, thank you for reaching out to us!
I am trying to reproduce the issue but I am getting a different error. Could you please share with me the full pom file you're using? Thank you!
Hi @selhagani ,thank you for your reply. The attachment is my project file jdk21graalvm.zip
Hey @zgmgt, Unfortunately, I can't download the project directly due to our internal policy. Would you mind uploading it to a public GitHub repository and sharing the link with me? Thank you!
Hey @zgmgt, Unfortunately, I can't download the project directly due to our internal policy. Would you mind uploading it to a public GitHub repository and sharing the link with me? Thank you!
Hey @selhagani . Okay, I'll just paste them out, just two files.
SwingSample.java
package org.example;
import java.awt.*;
import javax.swing.*;
public class SwingSample {
public static void main(String[] args) throws Exception {
if (System.getProperty("rrr","").equals("")) {
System.setProperty("java.home",".");
}
System.getProperties().list(System.out);
SwingUtilities.invokeAndWait(() -> {
JFrame frame = new JFrame("Hello World");
JButton button = new JButton("Hello");
button.addActionListener(e -> {
System.out.printf("Hello, World!%n");
});
JPanel panel = new JPanel(new FlowLayout());
panel.add(button);
frame.add(panel);
frame.setSize(400, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
});
}
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>jdk21graalvm</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>21</maven.compiler.source>
<maven.compiler.target>21</maven.compiler.target>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.example.SwingSample</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
Hi @zgmgt, I wanted to share a helpful update regarding the issue you're facing.
When I used the latest version of GraalVM CE which can be found here and I removed this part from the code:
if (System.getProperty("rrr","").equals("")) { System.setProperty("java.home","."); }
Then I ran the command
mvn clean package
Followed up by
java -agentlib:native-image-agent=config-output-dir=./cdir -jar jdk21graalvm-1.0-SNAPSHOT.jar
then I used this command to generate the native image:
native-image -jar jdk21graalvm-1.0-SNAPSHOT.jar -H:+ReportExceptionStackTraces --no-fallback --link-at-build-time -H:ConfigurationFileDirectories=./cdir -H:+AddAllCharsets --report-unsupported-elements-at-runtime --enable-url-protocols=https,http -Djava.awt.headless=false
and then I ran the native image using the following command
./jdk21graalvm-1.0-SNAPSHOT -Djava.home=/home/soufiane/Downloads/graalvm-community-openjdk-22.0.1+8.1
Then it worked correctly.
The issue is attributed to how some AWT/Swing classes are loading required properties from the JVM at runtime by invoking the system.getProperty("java.home") which is not available to native images at runtime.