FindThreads

This module determines the thread library of the system.

The following variables are set

CMAKE_THREAD_LIBS_INIT     - the thread library
CMAKE_USE_SPROC_INIT       - are we using sproc?
CMAKE_USE_WIN32_THREADS_INIT - using WIN32 threads?
CMAKE_USE_PTHREADS_INIT    - are we using pthreads
CMAKE_HP_PTHREADS_INIT     - are we using hp pthreads

For systems with multiple thread libraries, caller can set

CMAKE_THREAD_PREFER_PTHREAD