Re: [Boost-users] thread no defined - issue

Subject: Re: [Boost-users] thread no defined - issue
From: Vicente J. Botet Escriba (vicente.botet_at_[hidden])
Date: 2016-09-10 06:30:32

Le 10/09/2016 à 10:39, "Alexander Carôt" a écrit :
>> # For the library variant that is not native on the build platform
>> # an additional tag is applied:
>> # boost_thread_pthread for the pthread variant on windows, and
>> # boost_thread_win32 for the win32 variant (likely when built on cygwin).
>> #
>> # To request the pthread variant on windows, from boost root you would
>> # say e.g:
>> # bjam msvc-8.0 --with-thread install threadapi=pthread
>>
>> How have you built boost and how your user has build boost?
>> Which compile time flags are you using in your application and which is
>> using your user?
>> Are you defining BOOST_THREAD_POSIX
> No, not at all: I am neither compiling boost with additional flags nor am I defining anything in my sources.
>
> The user simply runs a binary, which tells that threads are not available and hence does not work at all.
>
> So - maybe this is where the problem starts: Should I explicitely compile boost with thread-support (or even pthread-support) ?
Compile it using

bjam <your compiler> --with-thread install threadapi=pthread

and define in your application

BOOST_THREAD_POSIX if you don't use bham.

Let me know how it works?

>
>> You can start by following the  Windows specific bugs (or whatever bug
>> as well) and pushing some PR for them. Once I have an idea of what kind
>> of work you can do, I can request to give you the needed rights to
>> commit your self any change and become a co-maintainer.
> Perfect - right now I cannot estimate the time I have to work on it so this is a good way to figure it out.
>
Great.
> Best
>
> Alex
>
>
>
>
>
>
>
>
>
>>>
>>>> Gesendet: Dienstag, 06. September 2016 um 19:00 Uhr
>>>> Von: "Vicente J. Botet Escriba" <vicente.botet_at_[hidden]>
>>>> An: boost-users_at_[hidden]
>>>> Betreff: Re: [Boost-users] thread no defined - issue
>>>>
>>>> Le 06/09/2016 à 01:40, Gavin Lambert a écrit :
>>>>> On 6/09/2016 07:14, Alexander Carôt wrote:
>>>>>> one single (windows) user in my project community
>>>>>> (http://www.soundjack.eu) has the following problem:
>>>>>>
>>>>>> #ifndef BOOST_THREAD_DEFINES_THREAD_ATTRIBUTES_NATIVE_HANDLE
>>>>>>           cout << "THREAD IS NOT DEFINED" << endl;
>>>>>> #endif
>>>>>>
>>>>>> This statement is true but only for him – on any other machine (Win,
>>>>>> Linux and OSX) is works fine.
>>>>> I haven't tried checking older versions of Boost to see if it's
>>>>> different, but AFAICT in 1.60 this symbol is only defined when using
>>>>> pthreads, which would not normally be the case on Windows unless
>>>>> you're using Cygwin (or possibly mingw).
>>>>>
>>>>> They could try defining BOOST_THREAD_POSIX to force use of pthreads if
>>>>> you require this for some reason, but this would have to be defined
>>>>> when compiling Boost itself, any libraries that use Boost, and for the
>>>>> application.
>>>>>
>>>>> If at all possible you should make your code work with both pthreads
>>>>> and Win32 threads.
>>>>>
>>>> AFAIK Boost.Thread don't use the pthread API on Windows. This will imply
>>>> a lot of changes that I can not test now as I don't have a Windows machine.
>>>>
>>>> If some one can spend some time trying to create a port to
>>>> Win/cygwin/... I'll be open to take in account the patch.
>>>>
>>>> Best,
>>>> Vicente
>>>>
>>>> P.S. I will need an experimented Windows guy that help me as
>>>> co-maintainer for the Windows platform.
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