[Scons-users] Scons Implicity Dependency not found issue

[Bill Deegan]

You've still not replied with the compile command line.
Also what's your CPPPATH?


On Tue, Oct 16, 2018 at 1:25 PM Hua Yanghao <huayanghao at gmail.com> wrote:

> it is the correct path and io.h is actually duplicated from
> firmware/include/io.h
>
> On Tue 16. Oct 2018 at 17:34, Bill Deegan <bill at baddogconsulting.com>
> wrote:
>
>> Is `build/configs/pangu/usw/firmware/arch/pangu/include/io.h' the correct
>> path to io.h?
>> Are you using duplicate=0, or not specifying in you SConscript()?
>> Are you using chdir somewhere in your SCons logic?
>>
>> Also, please paste the compile line for the compile which should find
>> io.h when it's passing?
>>
>> On Tue, Oct 16, 2018 at 11:14 AM Hua Yanghao <huayanghao at gmail.com>
>> wrote:
>>
>>> no it is static file.
>>>
>>> On Tue 16. Oct 2018 at 17:08, Bill Deegan <bill at baddogconsulting.com>
>>> wrote:
>>>
>>>> Is io.h a generated file?
>>>> Paste the compile line for the compile which should find io.h when it's
>>>> passing?
>>>>
>>>>
>>>> On Tue, Oct 16, 2018 at 8:54 AM Hua Yanghao <huayanghao at gmail.com>
>>>> wrote:
>>>>
>>>>> Hi Bill,
>>>>> Yes io.h is on my CPPPATH. And I am using variant_dir="build" for
>>>>> SConscript files. So normally all used header files will end up in the
>>>>> build folder too. But occasionally scons seems missed it. I am
>>>>> struggling to reproduce it ...
>>>>>
>>>>> BR, Yanghao
>>>>> On Tue, Oct 16, 2018 at 2:51 PM Bill Deegan <bill at baddogconsulting.com>
>>>>> wrote:
>>>>> >
>>>>> > Yes. Headers are scanned recursively.
>>>>> > Implicit cache should only be enable by command line flag or
>>>>> SetOption()
>>>>> >
>>>>> > Where is io.h located? is it in your CPPPATH?
>>>>> >
>>>>> > On Tue, Oct 16, 2018 at 6:43 AM Hua Yanghao <huayanghao at gmail.com>
>>>>> wrote:
>>>>> >>
>>>>> >> By the way, is scons scanner scans C file headers recursively?
>>>>> Thanks.
>>>>> >> On Tue, Oct 16, 2018 at 12:40 PM Hua Yanghao <huayanghao at gmail.com>
>>>>> wrote:
>>>>> >> >
>>>>> >> > scons: *** [build/configs/pangu/usw/firmware/arch/pangu/test.os]
>>>>> >> > Implicit dependency
>>>>> >> > `build/configs/pangu/usw/firmware/arch/pangu/include/io.h' not
>>>>> found,
>>>>> >> > needed by target
>>>>> `build/configs/pangu/usw/firmware/arch/pangu/test.os'
>>>>> >> >
>>>>> >> > I recently run into this odd problem, and it is very difficult to
>>>>> >> > reproduce. I did not explicitly enable the "implicit_cache" option
>>>>> >> > anywhere in my code. If I simply remove the build folder and then
>>>>> >> > re-build everything works as normal. the problem happens when
>>>>> there is
>>>>> >> > a old build, and then I pulled in some new code where this
>>>>> "test.c"
>>>>> >> > has included an additional header io.h and scons seems not
>>>>> re-scanning
>>>>> >> > the file by default.
>>>>> >> >
>>>>> >> > I am using scons 3.0.1, is the implict_cache by default enabled
>>>>> there
>>>>> >> > and I have to disable it manually?
>>>>> >> >
>>>>> >> > Thanks,
>>>>> >> > Yanghao Hua
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