ant: failed to create task or type

Question

(Yes, I\'ve read and played around based on answers to similar questions in this forum and in many others such as JavaRanch--to no avail yet.)

I\'ve created a custom

Answer 1

For me this message:

/Users/packrd/Downloads/source/build.xml:435: The following error occurred while executing this line:
/Users/packrd/Downloads/source/build.xml:440: The following error occurred while executing this line:
/Users/packrd/Downloads/source/Documentation/docs/build.xml:221: The following error occurred while executing this line:
/Users/packrd/Downloads/source/Documentation/docs/asciidoc-macros.xml:249: Problem: failed to create task or type antlib:net.sf.antcontrib:switch
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any / declarations have taken place.
No types or tasks have been defined in this namespace yet

This appears to be an antlib declaration. 
Action: Check that the implementing library exists in one of:
        -/usr/local/Cellar/ant/1.10.8/libexec/lib
        -/Users/packrd/.ant/lib
        -a directory added on the command line with the -lib argument

meant I didn't have ant-contrib installed, fix on OS X:

brew install ant-contrib