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From "Dominique Devienne" <ddevie...@gmail.com>
Subject C++ and Ivy [WAS: Re: [DISCUSS] EasyAnt ...]
Date Thu, 10 Jan 2008 17:13:18 GMT
> On Jan 10, 2008 10:34 AM, Xavier Hanin <xavier.hanin@gmail.com> wrote:
> > On Jan 10, 2008 5:13 PM, Dominique Devienne <ddevienne@gmail.com> wrote:
> > it so that my involvement with Ant took a back step, and I'm mostly
> > watching from afar what's going on in Ant. I've never used Ivy for
> > example. I'd probably have replaced my dependency stuff with Ivy by
> > now, although my stuff was C++ aware and was pulling not just jars
> > with also C++ headers and libraries, packaged sources of dependent
> > modules for debugging, etc...
>
> BTW Ivy is language agnostic, so you can use it for non java dependency
> management. But this is out of topic.

Can I abuse of your time to explore this a little more Xavier? Being
language agnostic doesn't necessarily translate in being usable to
deal with natively compiled and linked dependencies. The ad-hoc system
I built wasn't agnostic. When a dependency had native code associated
to it (the JNI glue code and supporting native libs it depended upon)
as described in the published artifact descriptor, the system knew to
look for foo-module-win32.zip in addition to foo-module.zip, if you
were building on win32, and each platform was getting its own specific
binaries. Then once the dependency was expanded, in addition to
automatically adding the dependent JARs on the classpath, it also
appended to the compilation include path, link library path, and
runtime PATH and java.library.path, and all transitive dependencies of
the current project. The common build could then reference all these
paths by well know ids, with no further configuration. The system
depended on a fixed and well know hierarchy for the artifact zips.

Given the agnostic nature of Ivy, how would one go about replicating
the kind of system I describing above on top of existing Ivy? Note
that I'm pretty ignore of Ivy, and haven't taken the time to explore
the doc before asking this question, so feel free to brush me off to
find the answers myself ;-) But since I have your attention, I thought
I'd try to get advice from the Ivy man directly ;-) Thanks, --DD

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