[Scons-dev] Tool initialization is called twice

[Bill Deegan]

Gary,

I agree ( I think you mentioned in another thread) that lazy tool
initialization would remove a lot of wasted and duplicated tool
initialization.

-Bill


On Wed, May 28, 2014 at 11:50 PM, anatoly techtonik <techtonik at gmail.com>
wrote:

> 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
>>>
>>> _______________________________________________
>>> Scons-dev mailing list
>>> Scons-dev at scons.org
>>> http://two.pairlist.net/mailman/listinfo/scons-dev
>>>
>>>
>>
>> _______________________________________________
>> Scons-dev mailing list
>> Scons-dev at scons.org
>> http://two.pairlist.net/mailman/listinfo/scons-dev
>>
>>
>
>
> --
> anatoly t.
>
> _______________________________________________
> Scons-dev mailing list
> Scons-dev at scons.org
> http://two.pairlist.net/mailman/listinfo/scons-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://two.pairlist.net/pipermail/scons-dev/attachments/20140529/a8d2aea1/attachment.html>