[Scons-users] Improve speed of windows environment

[Bill Deegan]

The tool isn't Object, but what type of tool creates an object.
Note my email said
env=Environment(tools=[only the tools you're using],...)
not
env=Environment(tools=[],)

Also why are you using: SCons.Environment.Environment  instead of
Environment() ?

In your case it looks like you need all of MSVC (at least) so:
sconsEnv = Environment(MSVC_VERSION = '10.0', TARGET_ARCH = 'x86',
tools=['msvc','mslink','mslib'])

Give that a try.
-Bill

On Tue, Apr 23, 2019 at 1:48 PM Pierre-Luc Boily <pierreluc.boily at gmail.com>
wrote:

> Ok, I tried  your solution but scons complains that Object doesn't exist,
> (which is normal I know).  2 Stupids questions:
>
> 1- What is the difference between tools and builders in the environment?
> By doing this :
> DefaultEnvironment(tools=[])
> env=Environment(tools=[],...)
>
> both tools and builders are now empty.
>
> 2- I need env.Object, env.Library env.Program, but those are gone from the
> BUILDERS section.  How to I add them when I create the Environment?  Tried
> this, but that doesn't work :
> sconsEnv = SCons.Environment.Environment(MSVC_VERSION = '10.0',
> TARGET_ARCH = 'x86', tools=['Object'])
>
> Thank you very much!
>
> Pierre-Luc
>
>
> Le mar. 23 avr. 2019, à 10 h 54, Bill Deegan <bill at baddogconsulting.com>
> a écrit :
>
>> Yes.
>> This has long been the case.
>> Launching processes in Windows is MUCH slower than linux.
>> When SCons starts up it tries to load all the default tools.
>> This involves launching numerous processes to see what tools are
>> available and also which version(s)
>> You can speed this up by only loading the tools you're using on windows.
>>
>> Do you only use env.Program() or do you also use Program() (which uses
>> the DefaultEnvironment())
>> So:
>> DefaultEnvironment(tools=[])
>> env=Environment(tools=[only the tools you're using],...)
>>
>> Should help.
>>
>> -Bill
>>
>>
>>
>> On Tue, Apr 23, 2019 at 10:07 AM Pierre-Luc Boily <
>> pierreluc.boily at gmail.com> wrote:
>>
>>> Hello!
>>>
>>> I just realized that the creation of an environment is faster under
>>> centos
>>> compared to windows 10.  See below Dump trace with --deubg=time
>>> arguments :
>>>
>>> Centos : https://pastebin.com/UPggyDcj
>>> Windows : https://pastebin.com/11YzKNDH
>>>
>>> I already read somewhere that tool creation is time consuming, but both
>>> centos\windows environments looks similar to be regarding tools..  So, I
>>> don't know why windows takes 1500 ms compare to 300ms for centos.
>>>
>>> Any idea?
>>>
>>> thx!
>>>
>>>
>>>
>>> --
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