diff --git a/cmake/Threads.cmake b/cmake/Threads.cmake
new file mode 100644
index 000000000..09834117f
--- /dev/null
+++ b/cmake/Threads.cmake
@@ -0,0 +1,63 @@
+
+
+macro_optional_find_package (Threads OFF)
+macro_log_feature (THREADS_FOUND "Threads Support"
+  "GNU Threads Library (or similar)"
+  "http://www.gnu.org/software/threads")
+if (WITH_Threads)
+  #
+  #   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
+  #
+  # The following import target is created
+  #
+  # ::
+  #
+  #   Threads::Threads
+  #
+  # For systems with multiple thread libraries, caller can set
+  #
+  # ::
+  #
+  #   CMAKE_THREAD_PREFER_PTHREAD
+  #
+  # If the use of the -pthread compiler and linker flag is prefered then the
+  # caller can set
+  #
+  # ::
+  #
+  set( THREADS_PREFER_PTHREAD_FLAG ON)
+
+  if (CMAKE_USE_PTHREADS_INIT)
+    target_link_libraries(libYap pthread)
+    set (HAVE_READLINE_READLINE_H 1)
+#    set( CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} )
+    check_function_exists( pthread_mutexattr_setkind_np HAVE_PTHREAD_MUTEXATTR_SETKIND_NP )
+    check_function_exists( pthread_mutexattr_settype HAVE_PTHREAD_MUTEXATTR_SETTYPE )
+    check_function_exists( pthread_setconcurrency HAVE_PTHREAD_SETCONCURRENCY )
+  endif (CMAKE_USE_PTHREADS_INIT)
+  set(YAP_SYSTEM_OPTIONS "threads " ${YAP_SYSTEM_OPTIONS})
+ set_property( DIRECTORY  APPEND PROPERTY COMPILE_DEFINITIONS  THREADS=1)
+  #
+  # Please note that the compiler flag can only be used with the imported
+  # target. Use of both the imported target as well as this switch is highly
+  # recommended for new code.
+endif (WITH_Threads)
+
+
+cmake_dependent_option (WITH_Pthread_Locking
+  "use pthread locking primitives for internal locking" ON
+  "WITH_Threads" OFF)
+
+IF(WITH_Pthread_Lockin)
+  set_DIRECTORY_properties(PROPERTIES APPEND COMPILE_DEFINITIONS USE_PTHREAD_LOCKING=1)
+ENDIF()
+
+CMAKE_DEPENDENT_OPTION (WITH_MAX_Threads 1024
+  "maximum number of threads" "WITH_Threads" 1)
+
+CMAKE_DEPENDENT_OPTION (WITH_MAX_Workers 64
+  "maximum number of or-parallel workers" "WITH_MAX_Workers" 1)