Jonathon Henderson created CASSANDRA-16831:
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             Summary: Unable to build from source - generate-jflex-java task 
fails with exception regarding JFlex
                 Key: CASSANDRA-16831
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16831
             Project: Cassandra
          Issue Type: Bug
          Components: Build
            Reporter: Jonathon Henderson


I'm unable to build Cassandra from source by running {{ant}} in the root 
directory on Windows 10, using AdoptOpenJDK 8 and Ant 1.10.11. The build fails 
with the following:
{code:bash}
generate-jflex-java:

BUILD FAILED
C:\Users\Jonathon\IdeaProjects\cassandra\build.xml:438: 
java.lang.NoSuchMethodError: 
jflex.core.LexParse.getSymbolFactory()Ljava_cup/runtime/SymbolFactory;
        at 
jflex.core.LexParse$CUP$LexParse$actions.CUP$LexParse$do_action_part00000000(LexParse.java:1087)
        at 
jflex.core.LexParse$CUP$LexParse$actions.CUP$LexParse$do_action(LexParse.java:2257)
        at jflex.core.LexParse.do_action(LexParse.java:598)
        at java_cup.runtime.lr_parser.parse(lr_parser.java:569)
        at jflex.generator.LexGenerator.generate(LexGenerator.java:74)
        at jflex.anttask.JFlexTask.execute(JFlexTask.java:78)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:299)
        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:99)
        at org.apache.tools.ant.Task.perform(Task.java:350)
        at org.apache.tools.ant.Target.execute(Target.java:449)
        at org.apache.tools.ant.Target.performTasks(Target.java:470)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1401)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1374)
        at 
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1264)
        at org.apache.tools.ant.Main.runBuild(Main.java:818)
        at org.apache.tools.ant.Main.startAnt(Main.java:223)
        at org.apache.tools.ant.launch.Launcher.run(Launcher.java:284)
        at org.apache.tools.ant.launch.Launcher.main(Launcher.java:101)
{code}
I've also tried doing it through Windows Subsystem for Linux (WSL 2) with the 
same versions of Java and Ant. I get the same error.

My environment:
 * Windows 10 Pro (Version 20H2, build 19042.1110)
 * 
OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_292-b10)
 * 
Apache Ant(TM) version 1.10.11 compiled on July 10 2021

Note: I should probably mention that I'm new to Cassandra and I've never been 
able to build it before. I'm trying to run an initial build before I run the 
script to generate Intellij IDEA files (since generate-jflex-java is executed 
during the generate-idea-files task, it fails there with the error above too). 
If I'm doing something wrong, please let me know.



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