[Scons-users] am I understand the tree properly?

[Bill Deegan]

are you listing output/data/target_a.data as a target for whatever builder
produces it?
(I'm guessing not...)

On Wed, Sep 15, 2021 at 12:17 PM daggs <daggs at gmx.com> wrote:

> Greetngs Bill.
>
> thank you for the tips, I'll take them into account.
> regardless Iv'e found my issue, figures it won't work right if you use
> c&p...
>
> there is one thing I'm curious about, output/data/target_a.data is a
> byproduct of the creation of output/.stages/h/target_a
> so it is logical to output/.stages/g/target_a.
> however if I run it on a clean tree, I get and error that the target isn't
> found, ll output/.stages/g/target_a returns a mach and if I run it again,
> it works.
> is this behavior because it is an inplicit target?
>
> Thanks.
>
> Dagg
>
> *Sent:* Wednesday, September 15, 2021 at 2:25 AM
> *From:* "Bill Deegan" <bill at baddogconsulting.com>
> *To:* "SCons users mailing list" <scons-users at scons.org>
> *Subject:* Re: [Scons-users] am I understand the tree properly?
> if a file shows as a dependency via the tree, then it's parent should wait
> for it to be ready.
>
> What do you mean by out of order?
> Not the order you expect?
> or is a dependency not being met and a builder being run before it's
> sources are ready?
>
> You can use "--taskmastertrace=FILE" arg to scons to dump debug info on
> the processing of the dependency tree.
> But I'd be very surprised if there was a bug there.
>
> A common error is to put call a builder/Command() with target and source
> arguments in the wrong order.
>
> Or is it that the file which isn't ready yet is one which is found via a
> scanner (for example an included header file)?
>
> Also.. if you set a Dir() as a source, it will not be out of date if it's
> contents change.
>
> On Tue, Sep 14, 2021 at 11:11 AM daggs <daggs at gmx.com> wrote:
>
>> I see, any tips on how to debug why the build is out of order?
>>
>> Dagg
>>
>>
>> *Sent:* Tuesday, September 14, 2021 at 7:04 PM
>> *From:* "Bill Deegan" <bill at baddogconsulting.com>
>> *To:* "SCons users mailing list" <scons-users at scons.org>
>> *Subject:* Re: [Scons-users] am I understand the tree properly?
>> You're making my eye's bleed with that.. ;)
>>
>> There's no guarantee of order.
>> That said any target which is "ready" to build will be built when a build
>> slot is available.
>> ready = nothing builds it's sources, depends, or implicit dependencies,
>> or all those three are already built(or not out of date) at that point in
>> time.
>>
>> -Bill
>>
>> On Tue, Sep 14, 2021 at 8:31 AM daggs <daggs at gmx.com> wrote:
>>
>>> Greetings,
>>>
>>> I'm trying to debug an dependency issue on my build and I want to be
>>> sure I understand the deps tree properly, here is the tree:
>>> +-target_a
>>>   +-output/.dummy_targets/target_a
>>>     +-output/.stages/a/target_a
>>>       +-output/.stages/b/target_a
>>>         +-output/.stages/c/target_a
>>>           +-output/.stages/d/target_a
>>>             +-output/.stages/e/target_a
>>>             | +-output/.stages/f/target_a
>>>             | | +-output/.stages/g/target_a
>>>             | | | +-output/.stages/h/target_a
>>>             | | |   +-src/data_files.ini
>>>             | | +-output/data/target_a.data
>>>             | +-src/dbs/target_a/a.db
>>>             | +-src/dbs/target_a/b.db
>>>             +-output/db_daemon.run
>>>               +-scripts/start_db_daemon.sh
>>>
>>> so, as I understand it, scripts/start_db_daemon.sh, src/data_files.ini,
>>> src/dbs/target_a/a.db and src/dbs/target_a/b.db
>>> are the first targets to get handled, then output/db_daemon.run and
>>> output/.stages/h/target_a.
>>> next output/.stages/f/target_a, followed by output/.stages/f/target_a,
>>> output/.stages/e/target_a and from there is it simple.
>>> am I right?
>>>
>>> Thanks,
>>>
>>> Dagg
>>> ,
>>>
>>> ,
>>>
>>>
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>>> Scons-users mailing list
>>> Scons-users at scons.org
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>>
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