[bt-devel] Windows (again)

[Matthew Talbert]

> It may be caused by a wrong condition variable. I can't check what variables
> your system sets. You can look at it in the cmake man page and change it
> yourself if you want to. In particular, I didn't use WIN32 because this
> issue depends on the compiler, not OS.

WIN32 is defined by MSVC as well as MinGW. I do not know about Cygwin,
but if MSVC and MinGW are your targets, there's no problem using
WIN32.

Matthew