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From "Dick, Brian E." <>
Subject RE: Ant should have an ext directory
Date Tue, 04 Jan 2005 13:05:55 GMT
That's along the route that we have taken, except we work in a
disconnected environment so software has to be on the machines. Our
developers simply check out the development software to their machines.

Instead of reserving a drive letter, we set a DEV_HOME environment
variable and all software is installed relative to that. The relative
paths are in a properties file, so changing the directory structure is

The core ant libraries and the 3rd party libraries defined by taskdefs
work great with this setup. The real problem arises with the ant
optional task library dependencies such as junit, commons-net, etc.
Since these components have a different distribution life cycle, we need
to upgrade them independently from ant.

As far as I know the only way ant can resolve references to optional
tasks is through the lib directory or the CLASSPATH environment
variable. We don't want to use the lib directory, because that should be
reserved for the standard ant distribution. We don't want to use the
CLASSPATH because it is unreliable (just search the ant archives for

Ant needs an ext directory.

-----Original Message-----
From: North Alex [] 
Sent: Tuesday, January 04, 2005 12:02 AM
To: Ant Users List
Subject: RE: Ant should have an ext directory


An alternative we have used is to put ANT itself into a ClearCase VOB.
We have one common vob named "devtools" that, among other things,
contains ANT and all of the common scripts, 3rd party libraries, etc.
This means our developers don't have ANT installed on their own machine
(all do have a 1.4.x Java Runtime installed and on their PATH) - easy
maintenance in this case :D

I have no idea how this would work with any other source control system
and we also have our ClearCase views mounted on a reserved drive letter
so pointing scripts to the correct place(s) was easy.

<= Alex =>

>-----Original Message-----
>From: Dick, Brian E. [] 
>Sent: Monday, January 03, 2005 7:42 PM
>To: Ant Users List
>Subject: RE: Ant should have an ext directory
>Understood, but I want to create a department-wide ant 
>distribution that is augmented with common extension 
>libraries. None of the options you list make this particularly 
>clean and easy to manage.

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