Why does ant compile all classes each run?

Question

I\'m more accustomed to make, so I\'m confused why ant recompiles classes when the source hasn\'t been changed. I\'ve read that there is a requirement to recompile in some cases

Answer 1

Your src & dest directories are not equivalent, so ant is not able to effectively stat the output files to compare them.

This is an FAQ: http://ant.apache.org/faq.html#always-recompiles