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Possible problem with Ant 1.6.5

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posted 13 years ago

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Every time I build with Ant I get the following error whether the build is successful or not:

/usr/bin/build-classpath: error: Could not find xml-commons-apis Java extension for this JVM
/usr/bin/build-classpath: error: Some specified jars were not found

Does this happen to anybody else and what problems might it lead to?

Thank You for Responding.

Tim Holloway

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posted 13 years ago

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No, I've never seen that happen. What platform are you building on, and if it's Linux, are you using the gcj Java or a "real" java?

It's also possible that the jars didn't install. For example, if you unzipped the Ant download and the disk filled up while in the middle of the extraction process.

The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.

You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.

Andrew Stallard

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posted 13 years ago

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Tim Holloway wrote:No, I've never seen that happen. What platform are you building on, and if it's Linux, are you using the gcj Java or a "real" java?

I use java version 1.6.0_19 from Sun Microsystems. Yes, I use Linux (Red Hat)

It's also possible that the jars didn't install. For example, if you unzipped the Ant download and the disk filled up while in the middle of the extraction process.

I installed Ant using yum. There were no reported errors. Is there a list of jars somewhere at Ant's website? I couldn't find anything like that over there.

Tim Holloway

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posted 13 years ago

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Normally Ant comes self-contained, although you can add extensions. However, Red Hat turned darned near every jarkarta project and quite a few other things into separate RPMS. Which is a bit over-granular for me, but such is life. Yum would have resolved any dependencies.

Check to make sure that you're really running the Sun JVM and not gcj. Use the "java -version" command.

Andrew Stallard

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posted 13 years ago

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Tim Holloway wrote:Normally Ant comes self-contained, although you can add extensions. However, Red Hat turned darned near every jarkarta project and quite a few other things into separate RPMS. Which is a bit over-granular for me, but such is life. Yum would have resolved any dependencies.

Check to make sure that you're really running the Sun JVM and not gcj. Use the "java -version" command.

Yes, I am using the real thing. I installed myself.

java -version // yields

java version "1.6.0_19"
Java(TM) SE Runtime Environment (build 1.6.0_19-b04)
Java HotSpot(TM) Client VM (build 16.2-b04, mixed mode, sharing)

Tim Holloway

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posted 13 years ago

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Oh, wait. I just read that message a little closer.

Apparently you're using one of the Ant extensions. There's a table on the Ant website that lists additional jars needed by the different extensions.

Last time I looked at it, it wasn't the clearest indication I'd ever seen, but it was sufficient.

I think you probably do need to install the xml-commons jar. If you're lucky it's Yum-installable. If not, download it and place it in your ANT_HOME/lib directory.