On 4/23/2020 4:11 AM, Andrey Semashev via Boost wrote:

On 2020-04-23 10:49, Edward Diener via Boost wrote:

...

What determines whether the Boost thread library is built with pthreads or win32 thread support if the threadapi feature is not specified when building the library ?

It's win32 on Windows and pthread everywhere else.

https://github.com/boostorg/build/blob/develop/src/tools/features/threadapi-...

Thanks ! It needs to be added to the Boost Build docs as a builtin feature.