--- a/VTK/ThirdParty/hdf5/vtkhdf5/src/CMakeLists.txt
+++ b/VTK/ThirdParty/hdf5/vtkhdf5/src/CMakeLists.txt
@@ -7,6 +7,7 @@
 # Apply Definitions to compiler in this directory and below
 #-----------------------------------------------------------------------------
 add_definitions (${HDF_EXTRA_C_FLAGS})
+link_libraries(m dl pthread)
 
 #-----------------------------------------------------------------------------
 # List Source Files