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Afaik, you don't need to add_dependencies(..) for a Python node. You won't be compiling the Python node, so it won't need the dyn cfg files at compile time. add_dependencies(..) is used to make sure dyn cfg is generated before C/C++ nodes are compiled that include the headers.

Afaik, you don't need to add_dependencies(..) for a Python node. You won't be compiling the Python node, so it won't need the dyn cfg files at compile time. add_dependencies(..) is used to make sure dyn cfg is generated before C/C++ nodes are compiled that include the headers.

Also: note that your DynCfg file is called cfg/piG.cfg, while your add_dependencies(..) statement references something called piD.

And: see catkin 0.6.17 documentation - Dynamic reconfiguration for documentation on what to do for Dynamic Reconfigure (but again: some steps are for C++ only).