[Scons-users] running buildre once and sharing it's output with another variant dir

[Bill Deegan]

You could do something like

RUN_ONCE=False
Export('RUN_ONCE')
...
# in SConscript
Import('RUN_ONCE')
if not RUN_ONCE:
   RUN_ONCE= True
   ... builders for these files
   ...
   or
   RUN_ONCE = env.MyMagicBuilders(...)

Then use RUN_ONCE as source for your other builder(s)?




On Tue, Jul 19, 2022 at 11:59 PM daggs <daggs at gmx.com> wrote:

> I'm running the same SConscript for two different modes, release and debug.
> they both need a set of generated files which are the same for both modes
> I can generate them for both variants but this seems like extra work.
> so I want to place them in a generic common path and that the first one
> will generate them.
> maybe I can move the generation to the parent SConscript.
> all I need is to make sure that the module's dir will depends on it...
> am I making any sense?
>
> Dagg.
>
> *Sent:* Tuesday, July 19, 2022 at 7:32 PM
> *From:* "Bill Deegan" <bill at baddogconsulting.com>
> *To:* "SCons users mailing list" <scons-users at scons.org>
> *Cc:* "daggs" <daggs at gmx.com>
> *Subject:* Re: [Scons-users] running buildre once and sharing it's output
> with another variant dir
> A small working example might be helpful.
>
> So are you wanting to use the same SConscript for the second variant dir?
> Or is this a different SConscript?
>
>
> On Tue, Jul 19, 2022 at 8:28 AM Mats Wichmann <mats at wichmann.us> wrote:
>
>> On 7/19/22 08:34, daggs wrote:
>> > Greetings,
>> >
>> > I have a module which I compile using variant dir.
>> > in the module's SConscript, I have a builder that is executed on a set
>> of files. I'd like to export that set of files do it can be used in the
>> second variant dir.
>> >
>> > will Export do the work?
>>
>> What Export does is it stores a variable with its value (i.e. key/value
>> pair) in a global (to the SCons process) dictionary so that other things
>> can grab it needed.
>>
>> Not sure from your description what it is you want to share - generated
>> files?  Export isn't really a mechanism intended for file contents, but
>> as long as you don't blow up the dictionary it might work....
>>
>>
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>
>
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