How to use list in ardupilot

I want to add a sliding window filter function in ardupilot code in ubuntu, so I need to use the list. I first #include , then define the list, then I get an error:undefined reference to `std::__detail::_List_node_base::_M_hook(std::__detail::_List_node_base*)’
It seems likes a problem of gcc version?Does anyone have added a list in the source code?Please help me.

We don’t use functions like this from the standard library.

There are several filters already present in ArduPilot - have you looked
at their implementations?

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Thank you very much for your answer. Now the averaging filter can be found in filter.h, which has helped me a lot. However, I still have a question. I see that there are several functions that use list in the source code. For example, I tried to imitate this usage, but I still get an error. Can you help me see? After all, the use of list is still useful.thank you very much


The usage you’ve found is within parts of the PX4 Firmware tree we don’t use - or we’d see link errors there too.

I’ve realised you might be confused here; ArduPilot includes the PX4 Firmware tree as a module; that’s a complete autopilot in and of itself. ArduPilot used to exclusively use PX4 Firmware for driver and operating system things; we are now moving towards ChibiOS, an alternate operating system to NuttX.

I suggest confining your changes to the ArduPilot source code - not in the external modules.

Thanks again:grinning: