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@@ -213,18 +213,38 @@ public class UnknownElement extends Task { |
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String elementName) { |
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String lSep = System.getProperty("line.separator"); |
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String msg = "Could not create " + what + " of type: " + elementName |
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+ "." + lSep |
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+ "Ant could not find the task or a class this" + lSep |
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+ "task relies upon." + lSep |
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+ "Common solutions are to use taskdef to declare" + lSep |
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+ "your task, or, if this is an optional task," + lSep |
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+ "to put the optional.jar and all required libraries of" +lSep |
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+ "this task in the lib directory of" + lSep |
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+ "your ant installation (ANT_HOME)." + lSep |
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+ "There is also the possibility that your build file " + lSep |
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+ "is written to work with a more recent version of ant " + lSep |
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+ "than the one you are using, in which case you have to " + lSep |
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+ "upgrade."; |
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+ "." + lSep+ lSep |
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+ "Ant could not find the task or a class this " |
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+ "task relies upon." + lSep +lSep |
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+ "This is common and has a number of causes; the usual " + lSep |
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+ "solutions are to read the manual pages then download and" + lSep |
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+ "install needed JAR files, or fix the build file: "+ lSep |
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+ " - You have misspelt '" + elementName + "'." + lSep |
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+ " Fix: check your spelling." +lSep |
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+ " - The task needs an external JAR file to execute" +lSep |
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+ " and this is not found at the right place in the classpath." +lSep |
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+ " Fix: check the documentation for dependencies." +lSep |
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+ " - The task is not an Ant core or optional task " +lSep |
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+ " and needs to be declared using <taskdef>." +lSep |
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+ " Fix: declare the task." +lSep |
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+ " - The task is an Ant optional task and optional.jar is absent"+lSep |
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+ " Fix: look for optional.jar in ANT_HOME/lib, download if needed" +lSep |
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+ " - The task was not built into optional.jar as dependent" +lSep |
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+ " libraries were not found at build time." + lSep |
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+ " Fix: look in the JAR to verify, then rebuild with the needed" +lSep |
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+ " libraries, or download a release version from apache.org" +lSep |
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+ " - The build file was written for a later version of Ant" +lSep |
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+ " Fix: upgrade to at least the latest release version of Ant" +lSep |
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+ lSep |
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+ "Remember that for JAR files to be visible to ant tasks implemented" +lSep |
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+ "in ANT_HOME/lib, the files must be in the same directory or on the" +lSep |
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+ "classpath"+ lSep |
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+ lSep |
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+ "Please do not file bug reports on this problem, nor email the" +lSep |
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+ "ant mailing lists, until all of these causes have been explored," +lSep |
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+ "as this is not an Ant bug."; |
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return new BuildException(msg, location); |
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} |
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Steve Loughran