Posted by Wade Walker on Aug 11, 2012; 1:25am
URL: https://forum.jogamp.org/Problem-Building-JOGL-Natives-On-Linux-tp4025777p4025778.html

Hm, that Ant output looks very messed up :) Specifically, all the "Trying to override old definition of task for" messages make me thing something is wrong. Perhaps there's something odd on your classpath (which should be empty)? Or maybe you're using a corrupted or odd version of Ant? You could also try "ant -verbose" to see if it gives any more useful error message.