I\'m newbie with CMake. I tested it on Linux for a program I am making. This program uses (POSIX Threads lib), so in my CMakeList, I added :
find_package(Thread
Apparently the CMAKE_USE_WIN32_THREADS_INIT is useful in context of all platforms. This variable is generated or initialised on invocation of findPackage(Threads), ideally it handles linking issues on all platforms in case thread library is required to be linked with executable. Basically it generates appropriate thread library name on platform unix like platforms and is empty on platform such as windows where explicit threading library is not required for linking. Reference: CMake findThreads https://cmake.org/cmake/help/v3.0/module/FindThreads.html?highlight=threads