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From <k...@panix.com>
Subject URGENT HELP! Ant suddenly failing
Date Mon, 22 Jul 2002 15:17:48 GMT




Ant is suddenly failing to build a target (jjtree), even though I'm
using a build file that has been working (and pretty stable) for the
last several months.  I must have done something between late Friday
and this morning to cause this sudden failure, but I can't figure out
what it is.  The verbose output tells me nothing (it is given below).

I have already verified that jjtree works properly when invoked by
itself.

Any help in interpreting the error message or with troubleshooting
this problem would be much appreciated.

Thank you very much in advance.

kj

PS:  Please Cc me in your replies.


  % ant -verbose jjtree
  Apache Ant version 1.5Beta2 compiled on May 31 2002
  Buildfile: build.xml
  Detected Java version: 1.3 in: /usr/local/opt/java/jdk1.3.1_02/jre
  Detected OS: Linux
  parsing buildfile build.xml with URI = file:/home/kynn/myproj/build.xml
  Project base dir set to: /home/kynn/myproj
  Build sequence for target `jjtree' is [jjtree]
  Complete build sequence is [jjtree, init, sign, javacc, compile, jar, clean, verify, dist]
  
  jjtree:
  dropping /usr/local/opt/java/jdk1.3.1_02/jre/jre/lib/rt.jar from path as it doesn't exist
  dropping /usr/local/opt/java/jdk1.3.1_02/Classes/classes.jar from path as it doesn't exist
  dropping /usr/local/opt/java/jdk1.3.1_02/Classes/ui.jar from path as it doesn't exist
     [jjtree] Executing 'java' with arguments:
     [jjtree] '-Dinstall.root=/home/kynn/java/javacc2.1/bin/lib'
     [jjtree] '-classpath'
     [jjtree] '/home/kynn/java/javacc2.1/bin/lib/JavaCC.zip:/usr/local/opt/java/jdk1.3.1_02/jre/lib/rt.jar'
     [jjtree] 'COM.sun.labs.jjtree.Main'
     [jjtree] '-OUTPUT_DIRECTORY:/home/kynn/myproj/com/site/my/package/parser'
     [jjtree] '/home/kynn/myproj/com/site/my/package/parser/Parser.jjt'
     [jjtree] The ' characters around the executable and arguments are
     [jjtree] not part of the command.

BUILD FAILED
/home/kynn/myproj/build.xml:27: Failed to launch JJTree
        at org.apache.tools.ant.taskdefs.optional.javacc.JJTree.execute(JJTree.java)
        at org.apache.tools.ant.Task.perform(Task.java)
        at org.apache.tools.ant.Target.execute(Target.java)
        at org.apache.tools.ant.Target.performTasks(Target.java)
        at org.apache.tools.ant.Project.executeTarget(Project.java)
        at org.apache.tools.ant.Project.executeTargets(Project.java)
        at org.apache.tools.ant.Main.runBuild(Main.java)
        at org.apache.tools.ant.Main.start(Main.java)
        at org.apache.tools.ant.Main.main(Main.java)
--- Nested Exception ---
java.io.IOException: java: cannot execute
        at java.lang.UNIXProcess.forkAndExec(Native Method)
        at java.lang.UNIXProcess.<init>(UNIXProcess.java:139)
        at java.lang.Runtime.execInternal(Native Method)
        at java.lang.Runtime.exec(Runtime.java:551)
        at java.lang.reflect.Method.invoke(Native Method)
        at org.apache.tools.ant.taskdefs.Execute$Java13CommandLauncher.exec(Execute.java)
        at org.apache.tools.ant.taskdefs.Execute.launch(Execute.java)
        at org.apache.tools.ant.taskdefs.Execute.execute(Execute.java)
        at org.apache.tools.ant.taskdefs.optional.javacc.JJTree.execute(JJTree.java)
        at org.apache.tools.ant.Task.perform(Task.java)
        at org.apache.tools.ant.Target.execute(Target.java)
        at org.apache.tools.ant.Target.performTasks(Target.java)
        at org.apache.tools.ant.Project.executeTarget(Project.java)
        at org.apache.tools.ant.Project.executeTargets(Project.java)
        at org.apache.tools.ant.Main.runBuild(Main.java)
        at org.apache.tools.ant.Main.start(Main.java)
        at org.apache.tools.ant.Main.main(Main.java)

Total time: 1 second




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