How to generate FastDDS message files from a .idl file that imports structs from others .idl files

Question

I have a few message files that are stored like this:

msgs/
  core/
   - core.idl
   - geoCore.idl
  geometry/
   - shape.idl

I'm tring to generate the corresponding fastDDS message files for shape.idl (shape.cxx, shape.h, shape.PubSubType.h, ...). However, shape.idl file is using structs that are defined only in core.idl and geoCore.idl. .

To adress that, shape.idl include the other two files:

#include "core.idl"
#include "geoCore.idl"
 

So,now, when I run fastddsgen /dir/to/geometry/shape.idl, I get :

WARNING (File shape, Line 8): Annotation topic not supported. Ignoring...
./dir/to/geometry/shape.idl:10:12: error: 'Core' was not defined previously
./dir/to/geometry/shape.idl.idl:11:12: error: 'Point' was not defined previously
./dir/to/geometry/shape.idl.idl:12:12: error: 'Ori' was not defined previously 

where Core and Point are defined in core.idl, and Ori is defined in geoCore.idl

I even add the flag -I and included the dependencies folder, but the result is the same. ex:

fastddsgen /dir/to/geometry/shape.idl -I /dir/to/core/