SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32



This is a known problem, coming from the fact that the Eclipse indexer (that analyses all files in your new project) runs in background; if you open a file before it has finished indexing all files it may not yet have indexed the files where these symbols are defined, so it signals errors...

To solve that you just have to force rebuilding the index, by right-clicking on any file in your project in the Project Explorer view then selecting “Index >> Rebuild”; the errors should then disapear after some seconds. If they don’t, just delete them from the “Problems” view and they should no more appear.

Hope this helps,

Bernard (Ac6)