Re: [MASSMAIL]Compiling plugins for Nutch

[Jorge Luis Betancourt González <jl...@uci.cu>]

How are you building/compiling the plugin? which command are you executing and in which directory?

----- Original Message -----
From: "Matthew Hall" <ma...@gmail.com>
To: user@nutch.apache.org
Sent: Tuesday, April 21, 2015 10:00:33 AM
Subject: [MASSMAIL]Compiling plugins for Nutch

Hi, I am currently trying to compile a plugin for nutch 2.3.  Unfortunately
the ant task fails when trying to compile the plugin with the following
error



BUILD FAILED

/home/nutchStack/nutch/apache-nutch-2.3/src/plugin/simpleIndexFilter/build.xml:3:
The following error occurred while executing this line:

/home/nutchStack/nutch/apache-nutch-2.3/src/plugin/build-plugin.xml:46:
Could not create task or type of type: antlib:org.apache.ivy.ant:settings.



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 'antlib:org.apache.ivy.ant:settings'.

   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/MANIFEST.MF.

     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 apache.org

 - 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



I tried to compile other plugins within the src directory but I get the
same error.  Could you advise please (new to ant and ivy)



Thanks.

Kind regards,



*Matt Hall*