--- CMakeLists.txt	2016-11-21 10:27:08.000000000 -0800
+++ CMakeLists.txt	2017-06-05 19:36:55.837393000 -0700
@@ -637,6 +637,8 @@
     ENDIF(MSVC)
   ENDIF(HDF5_C_LIBRARY AND HDF5_HL_LIBRARY AND HDF5_INCLUDE_DIR)
 
+  find_package(Threads REQUIRED)
+
   ###
   # The following options are not used in Windows.
   ###