[Scons-dev] Tool initialization is called twice

[anatoly techtonik]

On Thu, May 29, 2014 at 12:43 AM, Bill Deegan <bill at baddogconsulting.com>wrote:

> Gary,
>
> I was under the impression (need to check the code), that you could do:
> DefaultEnvironment(tools=[]) in SConstruct and it would prevent any tools
> from being initialized  and speed SCons startup.
>
> Did I misunderstand?
>

No, that's correct.

https://stackoverflow.com/questions/15205210/prevent-scons-from-looking-for-standard-tools#comment21499852_15206709


> -Bill
>
>
> On Wed, May 28, 2014 at 5:40 AM, Gary Oberbrunner <garyo at oberbrunner.com>wrote:
>
>>
>>
>>
>> On Wed, May 28, 2014 at 3:39 AM, anatoly techtonik <techtonik at gmail.com>wrote:
>>
>>> Hi,
>>>
>>> I found that SCons calls tool initialization twice for this simple
>>> SConstruct:
>>>
>>>     env = Environment()
>>>     env.Program(target='flite', source=[])
>>>
>>
>> Right, this is one of the things I want to address with the toolchain
>> revamp.  DefaultEnvironment is constructed before the SConstruct is read,
>> and all the default tools are detected there.
>>
>> Environment() is distinct from DefaultEnvironment(); DefaultEnvironment
>> is _only_ used for plain Object(), Program() etc. calls.  This is by
>> design.  Environment() does not inherit changes in DefaultEnvironment().
>>
>> --
>> Gary
>>
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>>
>>
>
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-- 
anatoly t.
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