[jboss-jira] [JBoss JIRA] (WFCORE-5039) Compile using JDK 11

[Paul Ferraro (Jira)]

Paul Ferraro created WFCORE-5039:
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             Summary: Compile using JDK 11
                 Key: WFCORE-5039
                 URL: https://issues.redhat.com/browse/WFCORE-5039
             Project: WildFly Core
          Issue Type: Task
          Components: Build System
    Affects Versions: 13.0.0.Beta1
            Reporter: Paul Ferraro
            Assignee: Paul Ferraro


As discussed on wildfly-dev mailing list, to enable the use of multi-release wildfly modules, we will:
 * Require JDK 11 to compile (for all modules except testsuite modules)
 ** Adjust compiler flags to use --release=8
 *** This is equivalent to: -source N -target N -bootclasspath <bootclasspath-from-N>
 * To ensure surefire tests are run against each supported JRE (wherever necessary), we will update the CI server maven settings to specify system properties for:
 ** java8.home
 ** java11.home
 * Update JDK8 specific CI servers to build with JDK 11, but run integration tests using Java 8.



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