[Scons-users] target-specific variables

[Bill Deegan]

Setting the variables in the Environment is really only a good idea if the
settings are for MANY builder invocations.
Rarely is it wise to set something like LIBS Environment wide.

On Thu, Feb 16, 2017 at 10:00 AM, William Blevins <wblevins001 at gmail.com>
wrote:

> Cloning is the straightforward way. Keep in mind that a clone creates an
> override wrapper so its relatively cheap.
>
> On Feb 16, 2017 12:07 PM, "Stefan Seefeld" <stefan at seefeld.name> wrote:
>
>> Hello,
>>
>> I have some build logic that does builds a shared library:
>>
>>   env.AppendUnique(CPPDEFINES=...)
>>
>>   env.SharedLibrary(...)
>>
>>
>> Is there a simple way to append to CPPDEFINES only in the scope of the
>> SharedLibrary object ? If I pass the CPPDEFINES keyword argument to the
>> SharedLibrary() call, it will override all previous values. Is there a
>> way to append to the existing list instead ? Or do I need to clone the
>> entire environment for this ?
>>
>>
>> Thanks,
>>
>>         Stefan
>>
>> --
>>
>>       ...ich hab' noch einen Koffer in Berlin...
>>
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>>
>
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