[netcdfgroup] problems with compilation: H5DS routines undefined

[Momme Butenschön <mommebu@xxxxxxxx>]

When compiling a program linking with netcdf4, hdf5 I get the following 
error:

ifort -r8 -O2 -o ../../../bin/opa model.o ../../../lib/oce/libopa.a  
.../../../lib/libioipsl.a -L/opt/netCDF-4/lib -lnetcdff -lnetcdf 
-L/opt/hdf5/lib -lhdf5 
/opt/netCDF-4/lib/libnetcdf.so: undefined reference to `H5DSget_num_scales'
/opt/netCDF-4/lib/libnetcdf.so: undefined reference to `H5DSset_scale'
/opt/netCDF-4/lib/libnetcdf.so: undefined reference to `H5DSis_scale'
/opt/netCDF-4/lib/libnetcdf.so: undefined reference to `H5DSiterate_scales'
/opt/netCDF-4/lib/libnetcdf.so: undefined reference to `H5DSget_scale_name'
/opt/netCDF-4/lib/libnetcdf.so: undefined reference to `H5DSattach_scale'
/opt/netCDF-4/lib/libnetcdf.so: undefined reference to `H5DSdetach_scale'
gmake[1]: *** [../../../bin/opa] Error 1


nm of libnetcdf.a and libnetcdf.so gives

        U H5DSget_num_scales

Any ideas what's going wrong?