Re: [Boost-build] Why does BBv2 doesn't use .jamdeps?

From: Alex Besogonov (cyberax_at_[hidden])
Date: 2006-04-25 05:39:55

Vladimir Prus wrote:
>> Today I've tried to compile my project with .jamdeps turned on
>> ("modules.poke : HCACHEFILE : .jamdeps ;" in my Jamroot) and it has
>> compiled without problems.
> Did you observe any performance boost as the result of that? If so, what are 
> the numbers?
Yes, it helps.

This is an empty build of my project with HCACHEFILE turned on:
===============
C:\work\FlexIDE>measuretime bjam.exe
warning: Python location is not configured
warning: the Boost.Python library won't be built
Building Boost.Regex with the optional Unicode/ICU support disabled.
Please refer to the Boost.Regex documentation for more information
(and if you don't know what ICU is then you probably don't need it).
Couldn't find utypes.h in
...found 5143 targets...

Time: 8.2 second.
===============

And now without HCACHEFILE:
===============
C:\work\FlexIDE>measuretime bjam.exe
warning: Python location is not configured
warning: the Boost.Python library won't be built
Building Boost.Regex with the optional Unicode/ICU support disabled.
Please refer to the Boost.Regex documentation for more information
(and if you don't know what ICU is then you probably don't need it).
Couldn't find utypes.h in
...patience...
...patience...
...found 5143 targets...

Time: 11.2 second.
===============
(results are after multiple runs to ensure everything is in disk cache).

-- 
With respect,
             Alex Besogonov (cyberax_at_[hidden])