CMake error when using system HDF5 and netcdf

[matthew-brett]

I ran ccmake and configured the make to use HDF5 and netcdf that I had already compiled.

Then I ran cmake .. (from the build directory), and got:

-- Found NetCDF headers: /Users/mb312/usr/local/include
-- Found NetCDF library: /Users/mb312/usr/local/lib/libnetcdf.dylib
-- Found components for HDF5
-- HDF5 library : /Users/mb312/usr/local/lib/libhdf5.dylib
-- HDF5 headers : /Users/mb312/usr/local/include
CMake Error at CMakeLists.txt:222 (ADD_DEPENDENCIES):
  add_dependencies called with incorrect number of arguments

I think this is because (around line 222 of CMakeLists.txt) MINC2_deps is the empty string when using the system HDF5 and system netcdf. Maybe the ADD_DEPENDENCIES line needs to be conditional on non-empty MINC2_deps?