cmake HAVE_GETDOMAINNAME examples

ornladios/ADIOS2 thirdparty/EVPath/EVPath/CMakeLists.txt :642 

CHECK_FUNCTION_EXISTS(getdomainname HAVE_GETDOMAINNAME)

ornladios/ADIOS2 thirdparty/ffs/ffs/CMakeLists.txt :310 

CHECK_FUNCTION_EXISTS(getdomainname HAVE_GETDOMAINNAME)