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https://issues.apache.org/jira/browse/XERCESJ-1707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16927387#comment-16927387
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Christophe Marchand commented on XERCESJ-1707:
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What about creating a Multi-Release Jar ?
This will allow to keep the same jar for Java 1.3, 1.4, 1.5, ... until last one.
If only XJavac is different, it will have only one class duplicated for Java9
and laters. This will allow to keep the same jar for all Java releases, and
will open an opportunity to create a Java9+ compliant module, with a module
name...
> Unable to build xercesImpl.jar with java 11
> -------------------------------------------
>
> Key: XERCESJ-1707
> URL: https://issues.apache.org/jira/browse/XERCESJ-1707
> Project: Xerces2-J
> Issue Type: Bug
> Components: Build
> Affects Versions: 2.12.0
> Reporter: Thomas Pasch
> Assignee: Mukul Gandhi
> Priority: Major
>
> I'm unable to build xercesImpl.jar with Java 11 even if I set source and
> target version:
> {{> ant -v -d -Dant.java.version=1.8 clean jar}}
> {{...}}
> {{ [xjavac] Fatal Error: Unable to find package java.lang in classpath or
> bootclasspath}}
> {{BUILD FAILED}}
> {{/home/tpasch/scm/db-toolchain/submodules/xerces2-j/build.xml:311: Compile
> failed; see the compiler error output for details.}}
> {{ at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1425)}}
> {{ at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:1133)}}
> {{ at org.apache.xerces.util.XJavac.execute(Unknown Source)}}
> {{ at
> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292)}}
> {{ at jdk.internal.reflect.GeneratedMethodAccessor4.invoke(Unknown
> Source)}}
> {{ at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)}}
> {{ at java.base/java.lang.reflect.Method.invoke(Method.java:566)}}
> {{ 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:1388)}}
> {{ at org.apache.tools.ant.Project.executeTarget(Project.java:1361)}}
> {{ at
> org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)}}
> {{ at org.apache.tools.ant.Project.executeTargets(Project.java:1251)}}
> {{ at org.apache.tools.ant.Main.runBuild(Main.java:834)}}
> {{ 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)}}
> The problem seems to be related to xerces own implementation of java compile,
> i.e. xjavac.
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