【发布时间】：2017-01-24 13:50:17
【问题描述】：
我对@987654325@ 插件进行了一些更改，以支持类似于Java 的语言（MaxJ）。我所做的更改可以在这里找到：
https://github.com/maxeler/eclipse.jdt.core/tree/MAXJ_4_4_maintenance
我的插件的发布可以在这里找到：
https://github.com/maxeler/eclipse/releases
当我在 GUI 模式下使用 eclipse 时一切正常，但我想从命令行编译不同的项目（在无头构建或使用 ant 中），为此我需要创建新的 ecj.jar 文件。我尝试构建这个库：
https://github.com/maxeler/maxpower
根据这篇文章：
jdtCompilerAdapter.jar 可以用来代替ecj.jar，但这不起作用，因为它不包含编译器类（如CompilerOptions 等）。
在build.xml 文件中，我更改了以下几行：
<taskdef name="maxjcompiler" classname="org.eclipse.jdt.core.ant.taskdef.MaxjTask" classpath="${env.MAXCOMPILERDIR}/lib/MaxIDE/ecj.jar" onerror="ignore"/>
<taskdef name="maxjdoc" classname="org.eclipse.jdt.core.ant.taskdef.MaxjDocTask" classpath="${env.MAXCOMPILERDIR}/lib/MaxIDE/ecj.jar"/>
用这个：
<taskdef name="maxjcompiler" classname="org.eclipse.jdt.core.ant.taskdef.MaxjTask" classpath="/pathToMyJar/jdtCompilerAdapter.jar" onerror="ignore"/>
<taskdef name="maxjdoc" classname="org.eclipse.jdt.core.ant.taskdef.MaxjDocTask" classpath="/home/ikulezic/Desktop/jdtCompilerAdapter.jar"/>
然后我运行这个命令开始构建过程：
ant
它会产生以下错误：
Buildfile: /home/ikulezic/Desktop/maxpower/build.xml
[taskdef] Could not load definitions from resource org/jacoco/ant/antlib.xml. It could not be found.
clean:
[delete] Deleting directory /home/ikulezic/Desktop/maxpower/bin
compile:
[echo]
[echo] Using maxeda classpath '/opt/maxcompiler/lib/MaxCompiler.jar'
[echo] (Precedence: 1. $MAXCOMPILERJCP, 2. $MAXCOMPILERDIR)
[echo]
[echo]
[mkdir] Created dir: /home/ikulezic/Desktop/maxpower/bin
BUILD FAILED
/home/ikulezic/Desktop/maxpower/build.xml:66: Could not create type maxjcompiler due to java.lang.NoClassDefFoundError: org/eclipse/jdt/internal/compiler/impl/CompilerOptions
at org.eclipse.jdt.core.ant.taskdef.MaxjTask.<init>(MaxjTask.java:80)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.tools.ant.AntTypeDefinition.innerCreateAndSet(AntTypeDefinition.java:328)
at org.apache.tools.ant.AntTypeDefinition.createAndSet(AntTypeDefinition.java:274)
at org.apache.tools.ant.AntTypeDefinition.icreate(AntTypeDefinition.java:219)
at org.apache.tools.ant.AntTypeDefinition.create(AntTypeDefinition.java:206)
at org.apache.tools.ant.ComponentHelper.createComponent(ComponentHelper.java:285)
at org.apache.tools.ant.ComponentHelper.createComponent(ComponentHelper.java:263)
at org.apache.tools.ant.UnknownElement.makeObject(UnknownElement.java:429)
at org.apache.tools.ant.UnknownElement.maybeConfigure(UnknownElement.java:163)
at org.apache.tools.ant.Task.perform(Task.java:347)
at org.apache.tools.ant.Target.execute(Target.java:435)
at org.apache.tools.ant.Target.performTasks(Target.java:456)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393)
at org.apache.
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1248)
at org.apache.tools.ant.Main.runBuild(Main.java:851)
at org.apache.tools.ant.Main.startAnt(Main.java:235)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
Caused by: java.lang.ClassNotFoundException: org.eclipse.jdt.internal.compiler.impl.CompilerOptions
at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1366)
at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1315)
at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1068)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 24 more
Total time: 0 seconds
目前似乎唯一的选择是构建一个新的ecj.jar 文件，但我找不到这样做的方法。
【问题讨论】：
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为什么要截屏控制台输出？