How to keep a set of ant build scripts updated in different java IDEs?

My team members are developing different java projects using InteliJ, Eclipse and NetBeans. As a software configuration management practice, I need to have a standard Ant build script for each of these projects. Unfortunately, the ant scripts generated by these IDEs are not in a standard format and may contain many IDE-specific tasks. Furthermore, some IDEs, e.g. InteliJ, do not update the generated Ant files auto开发者_Go百科matically when the project is changed, therefore an automatic build may simply be broken. Now, here is the problem: I have a set of build scripts. I need:

1. The scripts to be in a standard format
2. The build scripts to be updated automatically by the used IDEs (InteliJ, Eclipse,NetBeans) when the project is updated.

Is there any straightforward method to do this job?

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Do not use IDEs to generate ant scripts. You need solid repeatable builds working without IDEs (for example on CI server like Hudson/Jenkins). Best way to have standard build is to use maven, and generate IDE projects from pom. ( IDEA works with maven natively - no need to generate project files )