fyi: https://code.google.com/p/v8/issues/detail?id=4171

On Wed, Jun 10, 2015 at 4:18 PM, Daniel Vogelheim <[email protected]>
wrote:

> So... I have a new explanation + a new plan:
>
> The generated makefiles use intermediate files to correctly handle
> multiple outputs. However, the intermediate files aren't actually
> generated, so apparently make (under some conditions?) builds the 'lower'
> targets; concludes nothing actually changed; and then doesn't rebuild the
> 'higher' targets that depend on the lower ones. Essentially, those
> 'intermediate' files end up breaking the dependency chain.
>
> If so, the solution will be to add some additional 'touch' commands to the
> gyp make generator.
>
> As a plus, this would also explain the issue with messages.h, since that
> particular rule also relies on intermediate files for the 'make' generator.
>
> Since the whole gyp/make thing is a bit of a mess, I'll spend a bit more
> time on making sure this will actually fix things.
>
>
> Ceterum censeo: make needs to die. None of this happens with ninja, since
> ninja treats multiple outputs in a sane fashion.
>
> On Wed, Jun 10, 2015 at 11:29 AM, Daniel Vogelheim <[email protected]>
> wrote:
>
>> Uuh, my explanation was wrong. The part below about not re-running some
>> of the steps is right, but my explanation + fix wasn't. I'll look into this
>> further.
>>
>>
>> On Wed, Jun 10, 2015 at 10:54 AM, Daniel Vogelheim <[email protected]>
>> wrote:
>>
>>> This added a new natives source file, but didn't name it in the build
>>> files. Fix in cl/1173853006
>>> <https://critique.corp.google.com/#review/1173853006>.
>>>
>>> On Wed, Jun 10, 2015 at 9:06 AM, <[email protected]> wrote:
>>>
>>>> Something is missing in the build deps. The builder that built this CL
>>>> made the
>>>> external snapshot (including the experimental libraries):
>>>>
>>>> http://build.chromium.org/p/client.v8/builders/V8%20Linux64%20-%20builder/builds/8672/steps/compile/logs/stdio
>>>>
>>>> @vogelheim, yangguo: There was no linking of d8, guess that is
>>>> expected? Still,
>>>> something is missing since the tests failed (e.g.
>>>> http://build.chromium.org/p/client.v8/builders/V8%20Linux64/builds/3799)
>>>> and a
>>>> full rebuild in the next commit solved the problem.
>>>>
>>>
>>> Not linking of d8 was expected, as it doesn't change. But it didn't
>>> re-run js2c, since it didn't "see" any changed sources, and then didn't run
>>> the concatenate step to produce a new blob either.
>>>
>>>
>>>> https://codereview.chromium.org/1170023002/
>>>>
>>>
>>>
>>
>

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