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From "Alexey N. Solofnenko" <>
Subject Re: Does Ant improves the performance in large c++ project than make?
Date Fri, 15 Jul 2005 00:45:13 GMT
It is quite possible. With make it is usually one file at a time 
compilation. ANT is smart enough to request a build for several files at 
a time.

- Alexey.

hiren patel wrote:
> Hi,
> We are having a  large,multi platform,complex,commercial C++ project
> which is build by 
> using a make peer PVCS merant make. In oreder to tailor the
> functionality of make, we have created the wrapper around it.
> Around 700 of make files in hierarchy with some top level  makefiles are
> used by the make.
> A complex perl script performs and co-ordinates the build stages. It
> also executes some of the build stages in parallel. 
> Full build itself takes aroud 7 hours. Project is build on unix,sun
> solaris and NT platforms.
> Question is can Ant be used for this kind project where build takes a
> several hours already? 
> ANT documentation doen't states that it can be used for C/C++ projects
> and doen't provides any tasks for C++ file compilation in the latest
> version.
> As ANT is designed for java based projects and uses JVM which could make
> it significantly slower than it is right now. isn't it?
> is anybody using the Ant for such project?
> if so than what will be the effect on build time (as this is the most
> important criteria for us) if we move from PVCS merant make to ANT?
> Since ANT calculates the file dependencies by its own, I suspect time
> overhead in doing this at each build operation. Is there any way to
> cache the dependancy information in order to remove this overhead?
> Please provide suggestions,
> Thanks,
> Hiren patel
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/ Alexey N. Solofnenko

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