using netcdf target now instead of FOUND variable

CMakeLists.txt

@@ -41,7 +41,8 @@ ENDIF()
 
 find_package(netCDF 4.0 REQUIRED)
 set(netcdf_flag HAVE_LIBNETCDF)
-if (${netCDF_FOUND})
+message(STATUS netCDF::netcdf)
+if (TARGET netCDF::netcdf)
   add_compile_definitions(${netcdf_flag}=${netCDF_FOUND})
 else()
   message(WARNING "netcdf not found, compiling without netcdf")