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Subject: Re: [boost] [thread] fails to build on Cygwin with weird errors
From: Niall Douglas (s_sourceforge_at_[hidden])
Date: 2015-01-15 07:45:29

On 15 Jan 2015 at 5:22, Peter Dimov wrote:

> Vicente,
> I'm trying to get the pool tests up and running (they fail across the board,
> at least on develop), and one of them requires Thread, which fails to build
> under g++/Cygwin.

It's working with mingw32 and mingw64:

> The errors are of the kind
> ..\..\..\libs\thread\src\win32\thread.cpp: In member function 'bool
> boost::thread::start_thread_noexcept()':
> ..\..\..\libs\thread\src\win32\thread.cpp:337:127: error: 'struct
> boost::detail::thread_data_base' has no member named 'id'
> uintptr_t const
> new_thread=_beginthreadex(0,0,&thread_start_function,thread_info.get(),CREATE_SUSPENDED,&thread_info->id);
> which leads me to think that, on Cygwin, you're using the POSIX header with
> the Win32 source file.

I believe Cygwin wants you to use a pthread API, so this is expected.
Its point is to emulate POSIX on Windows. Often the best way of
building for Cygwin is to #undef WIN32 entirely and let the code
think it's building for Linux.

I'm not even sure if Cygwin is supported by Boost.Thread. If it was,
it certainly isn't regularly tested.


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