Hi Rupert,

On 26.09.2013 09:24, rupert THURNER wrote:
On Thu, Sep 26, 2013 at 8:44 AM, Dirk Bächle <[email protected]> wrote:
Hi Gary,

On 26.09.2013 02:08, Gary Oberbrunner wrote:


[...]


what are the main things which make waf, and wonderbuild so much
faster than scons? a test is here, but already a little outdated:
http://retropaganda.info/~bohan/work/psycle/branches/bohan/wonderbuild/benchmarks/time.xml


the main difference between SCons and waf/wonderbuild regarding run times for updates is, that the latter two don't offer a "recursive variable substitution" feature (the subst() method in SCons). Additionally, wonderbuild is trimmed to speed by sacrificing correctness, e.g. it's CPP scanner doesn't care about "#ifdef"s.
Waf handles this much better, I guess...but I didn't check its sources.

Regards,

Dirk


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