Pthread 3rd party
Pthreads is already installed on Unix platforms including OSX and is licensed under the terms of the GNU LGPL v2.1 license. Pthreads is one of the optional 3rd parties supported by ViSP core module. Pthreads may be also useful in robot module.
Windows platforms does not support Pthreads natively. Pthreads-win32 project seeks to provide a freely available solution to this problem. It can be retrieved from http://sources.redhat.com/pthreads-win32/. Pthread is needed for Biclops.
To be detected by CMake under Windows, you should add an environment variable called PTHREAD_HOME which points to the installation folder containing the lib and include folders.