Problems building 0.7.7 from sources

Hi all,

I downloaded OpenJMS-0.7.7-alpha-1 and I am trying to build it using 
Maven. The build is failing due to some compilation errors like this:

C:\javalibs\openjms-0.7.7-alpha-2\modules\jms\src\main\java\org\exol
ab\jms\selector\Selector.java:51: cannot resolve symbol
  symbol  : class SelectorLexer
  location: package parser
  import org.exolab.jms.selector.parser.SelectorLexer;

It seems that the files in org.exolab.jms.selector.parser are not being 
generated. Is there something I am missing? BTW, I am a Maven newbie. I 
am following the instructions in:

http://openjms.sourceforge.net/devguide/build.html

Thanx in advance,

-- 
DIEGO Moreira da Rosa

DATACOM
Av França, 735 - Porto Alegre, RS - 90230-220
DDR: 51 3358 0141
Fax: 51 3358 0101
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