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Daniel Wallin
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From: Noel Llopis <nll_pub_at_[hidden]>
To: sweng-gamedev_at_[hidden]
Subject: Re: [Sweng-gamedev] The Quest for the (More) Perfect Build Tool
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Date: Wed, 31 Aug 2005 07:39:58 -0700
On Tuesday 30 August 2005 20:54, Scott Shumaker wrote:
> Has anyone here tried Boost.Jam? Apparently it's based on JAM but with
> many modifications that seem to nicely abstract out multiple platforms,
> etc.
I keep meaning to put up a followup article to the build system one. I 
consider a bunch of other build systems, including Boost.Jam.
I looked into Boost.Jam because it was supposed to be the great followup to 
Jam, with all the little things fixed and support for a bunch of very 
useful things out of the box.
Well, somebody dropped the ball big time with that. First of all, I found 
Boost.Jam to be extremely complex (nothing like the original Jam, which 
wasn't exactly simple either). But the big problem was performance. 
Here's a comparison of a build with the same set of files:
Jam on Windows:
- Full rebuild: 6m 52s
- Incremental build: 3.1s
- Incremental single libray: 0.3s
BoostBuild v2 (3.1.10) on Windows:
- Full rebuild: 12m 03s
- Incremental build: 55.5s
- Incremental single libray: 2.0s
I find the difference in performance simply baffling. How bad can you screw 
up the performance of a full build using the same compiler???
Anyway, as I said, I'll put up a full article this weekend including results 
for Boost.Jam, Ant, Nant, VS2005 and a few others.
--Noel
Games from Within
http://www.gamesfromwithin.com
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