Maven: Unsupported JVM detected, this will likely result in low performance

[markusstephanides]

Hello!

I'm currently setting up a project with lwjgl3 and maven this is the relevant part of my pom (generated by the online tool on the website):

<properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <lwjgl.version>3.1.4</lwjgl.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl</artifactId>
            <version>${lwjgl.version}</version>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-egl</artifactId>
            <version>${lwjgl.version}</version>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-glfw</artifactId>
            <version>${lwjgl.version}</version>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-jemalloc</artifactId>
            <version>${lwjgl.version}</version>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-openal</artifactId>
            <version>${lwjgl.version}</version>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-opengl</artifactId>
            <version>${lwjgl.version}</version>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-opengles</artifactId>
            <version>${lwjgl.version}</version>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-stb</artifactId>
            <version>${lwjgl.version}</version>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl</artifactId>
            <version>${lwjgl.version}</version>
            <classifier>${lwjgl.natives}</classifier>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-glfw</artifactId>
            <version>${lwjgl.version}</version>
            <classifier>${lwjgl.natives}</classifier>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-jemalloc</artifactId>
            <version>${lwjgl.version}</version>
            <classifier>${lwjgl.natives}</classifier>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-openal</artifactId>
            <version>${lwjgl.version}</version>
            <classifier>${lwjgl.natives}</classifier>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-opengl</artifactId>
            <version>${lwjgl.version}</version>
            <classifier>${lwjgl.natives}</classifier>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-opengles</artifactId>
            <version>${lwjgl.version}</version>
            <classifier>${lwjgl.natives}</classifier>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.lwjgl</groupId>
            <artifactId>lwjgl-stb</artifactId>
            <version>${lwjgl.version}</version>
            <classifier>${lwjgl.natives}</classifier>
            <scope>runtime</scope>
        </dependency>
    </dependencies>

    <profiles>
        <profile>
            <id>lwjgl-natives-linux</id>
            <activation>
                <os>
                    <family>unix</family>
                </os>
            </activation>
            <properties>
                <lwjgl.natives>natives-linux</lwjgl.natives>
            </properties>
        </profile>
        <profile>
            <id>lwjgl-natives-macos</id>
            <activation>
                <os>
                    <family>mac</family>
                </os>
            </activation>
            <properties>
                <lwjgl.natives>natives-macos</lwjgl.natives>
            </properties>
        </profile>
        <profile>
            <id>lwjgl-natives-windows</id>
            <activation>
                <os>
                    <family>windows</family>
                </os>
            </activation>
            <properties>
                <lwjgl.natives>natives-windows</lwjgl.natives>
            </properties>
        </profile>
    </profiles>

But when starting the application I get this error:

java.lang.NoSuchMethodError: java.nio.ByteBuffer.limit(I)Ljava/nio/ByteBuffer;
	at org.lwjgl.system.MemoryAccess$MemoryAccessorUnsafe.getCapacityOffset(MemoryAccess.java:159)
	at org.lwjgl.system.MemoryAccess$MemoryAccessorUnsafe.<clinit>(MemoryAccess.java:132)
	at org.lwjgl.system.MemoryAccess.getInstance(MemoryAccess.java:31)
	at org.lwjgl.system.MemoryUtil.<clinit>(MemoryUtil.java:62)
	at org.lwjgl.system.MemoryStack.<init>(MemoryStack.java:60)
	at org.lwjgl.system.MemoryStack.create(MemoryStack.java:81)
	at org.lwjgl.system.MemoryStack.create(MemoryStack.java:70)
	at java.lang.ThreadLocal$SuppliedThreadLocal.initialValue(ThreadLocal.java:284)
	at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:180)
	at java.lang.ThreadLocal.get(ThreadLocal.java:170)
	at org.lwjgl.system.MemoryStack.stackGet(MemoryStack.java:603)
	at org.lwjgl.system.MemoryStack.stackPush(MemoryStack.java:612)
	at org.lwjgl.system.Callback.<clinit>(Callback.java:38)

And this error:

[LWJGL] [MemoryAccessor] Unsupported JVM detected, this will likely result in low performance. Please inform LWJGL developers.

Would appreciate help on this!

[Spasi]

The 3.1.4 build on Maven is bugged, it has been compiled with Java 9. The bytecode version is fine (Java 8), but not the boot classpath. JDK 9 introduced covariant returns in certain NIO methods and that's the error you're seeing.

Workarounds:

• use Java 9
• download the latest 3.1.4-SNAPSHOT (it's identical to the 3.1.4 release but compiled properly)
• download LWJGL from the website or github (the binaries have been updated)

There will be a 3.1.5 release immediately (hopefully tonight or tomorrow morning) that will fix the Maven build.

[Spasi]

Fixed with the 3.1.5 release.