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From Sunil Mishra <smis...@AI.SRI.COM>
Subject Re: [HELP] problem using antlr in ant
Date Fri, 12 Dec 2008 19:27:53 GMT
It's been a while since I've worked on this, so I'm afraid I won't be  
able to give you much precise help. Make sure you have the required  
antlr jar files in your ant installation, the task AFAIK should work  
correctly from there on.


On Dec 12, 2008, at 3:46 AM, <> < 
 > wrote:

> Hi Sunil,
>  I found some queries posted by you on antlr tasks in ant mail  
> archives.
> I am facing issue while using antlr task inside ant build.xml.
> could you please give me some insight on how to go about?
> Thanks in advance
> Regards
> Bharath
> here are the details:
>  I am trying to build a grammar file inside build.xml
>   <target name="antlrcompile">
>     <antlr target="sample.g;" outputdirectory="." >
>        <classpath>
>          <pathelement location="../../lib/antlr-2.7.7.jar"/>
>        </classpath>
>     </antlr>
>   </target>
> I am getting an error:
> build.xml:19: Could not create task or type of type: antlr.
> Ant could not find the task or a class this task relies upon.
> This is common and has a number of causes; the usual
> solutions are to read the manual pages then download and
> install needed JAR files, or fix the build file:
>  - You have misspelt 'antlr'.
>    Fix: check your spelling.
>  - The task needs an external JAR file to execute
>      and this is not found at the right place in the classpath.
>    Fix: check the documentation for dependencies.
>    Fix: declare the task.
>  - The task is an Ant optional task and the JAR file and/or libraries
>      implementing the functionality were not found at the time you
>      yourself built your installation of Ant from the Ant sources.
>    Fix: Look in the ANT_HOME/lib for the 'ant-' JAR corresponding to  
> the
>      task and make sure it contains more than merely a META-INF/ 
>      If all it contains is the manifest, then rebuild Ant with the  
> needed
>      libraries present in ${ant.home}/lib/optional/ , or  
> alternatively,
>      download a pre-built release version from
>  - The build file was written for a later version of Ant
>    Fix: upgrade to at least the latest release version of Ant
>  - The task is not an Ant core or optional task
>      and needs to be declared using <taskdef>.
>  - You are attempting to use a task defined using
>     <presetdef> or <macrodef> but have spelt wrong or not
>    defined it at the point of use
> Remember that for JAR files to be visible to Ant tasks implemented
> in ANT_HOME/lib, the files must be in the same directory or on the
> classpath
> Please neither file bug reports on this problem, nor email the
> Ant mailing lists, until all of these causes have been explored,
> as this is not an Ant bug.
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