Rory, it looks like ZookKeeper does not build on JDK16 (it does with JDK15)
my error is: [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (pre-compile-jute) on project zookeeper-jute: Fatal error compiling: error: invalid flag: -Xdoclint:-missing -> [Help 1] This is Maven debug: [DEBUG] Classpath: [DEBUG] /home/eolivelli/dev/zookeeper/zookeeper-jute/target/classes [DEBUG] /home/eolivelli/.m2/repository/org/apache/yetus/audience-annotations/0.5.0/audience-annotations-0.5.0.jar [DEBUG] Source roots: [DEBUG] /home/eolivelli/dev/zookeeper/zookeeper-jute/src/main/java [DEBUG] /home/eolivelli/dev/zookeeper/zookeeper-jute/target/generated-sources/java [DEBUG] /home/eolivelli/dev/zookeeper/zookeeper-jute/target/generated-sources/annotations [DEBUG] Command line options: [DEBUG] -d /home/eolivelli/dev/zookeeper/zookeeper-jute/target/classes -classpath /home/eolivelli/dev/zookeeper/zookeeper-jute/target/classes:/home/eolivelli/.m2/repository/org/apache/yetus/audience-annotations/0.5.0/audience-annotations-0.5.0.jar: -sourcepath /home/eolivelli/dev/zookeeper/zookeeper-jute/src/main/java:/home/eolivelli/dev/zookeeper/zookeeper-jute/target/generated-sources/java:/home/eolivelli/dev/zookeeper/zookeeper-jute/target/generated-sources/annotations: -s /home/eolivelli/dev/zookeeper/zookeeper-jute/target/generated-sources/annotations -g --release 8 -encoding UTF-8 -Werror -Xlint:deprecation -Xlint:unchecked -Xlint:-options *-Xdoclint:-missing* -Xpkginfo:always [DEBUG] incrementalBuildHelper#beforeRebuildExecution [INFO] Compiling 36 source files to /home/eolivelli/dev/zookeeper/zookeeper-jute/target/classes from javac help it looks like "-Xdoclint:-missing" is a valid option in order to reproduce the failure just clone zookeeper from github git clone https://github.com/apache/zookeeper JAVA_HOME=/path/to/jdk-16 mvn clean package -DskipTests Any hint ? Enrico Il giorno ven 2 ott 2020 alle ore 11:12 Rory O'Donnell < rory.odonn...@oracle.com> ha scritto: > Hi Enrico, > > OpenJDK 16 Early Access build 18**is now available at > http://jdk.java.net/16 > > * These early-access , open-source builds are provided under the > o GNU General Public License, version 2, with the Classpath > Exception <http://openjdk.java.net/legal/gplv2+ce.html>. > > * Features: > o JEPs proposed to target JDK 16 > + JEP 376: ZGC: Concurrent Thread-Stack Processing > <https://openjdk.java.net/jeps/376> > + JEP 386: Alpine Linux Port <https://openjdk.java.net/jeps/386> > + JEP 388: Windows/AArch64 Port > <https://openjdk.java.net/jeps/388> > o JEPs targeted to JDK 16, so far: > + JEP 338: Vector API (Incubator) > <https://openjdk.java.net/jeps/338> > + JEP 347: Enable C++14 Language Features > <https://openjdk.java.net/jeps/347> > + JEP 357: Migrate from Mercurial to Git > <https://openjdk.java.net/jeps/357> > + JEP 369: Migrate to GitHub <https://openjdk.java.net/jeps/369> > + JEP 387: Elastic Metaspace <https://openjdk.java.net/jeps/387> > > * Release Notes are available at http://jdk.java.net/16/release-notes > > ** > > * Changes in recent builds that maybe of interest: > o Build 17 > + JDK-8247281: Object monitors no longer keep strong > references to their associated object > + JDK-8202473: A type variable with multiple bounds does not > correctly place type annotation > # Reported by ByteBuddy > + JDK-8234808: jdb quoted option parsing broken > # Reported by Apache Tomcat > o Build 16 > + JDK-8172366: SUN, SunRsaSign, and SunEC Providers Supports > SHA-3 Based Signature Algorithms > + JDK-8244706: GZIPOutputStream now sets the GZIP OS Header > Field to the correct default value > > * Quality Report for September 2020 was published here [1]. Thanks to > everyone who contributed by creating features or enhancements, > logging bugs, or downloading and testing the early-access builds. > > > *__* > Rgds,Rory > > [1] > > https://wiki.openjdk.java.net/display/quality/Quality+Outreach+report+September+2020 > > -- > Rgds, Rory O'Donnell > Quality Engineering Manager > Oracle EMEA, Dublin, Ireland > >
