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 two short videos (registration required) highlighting:

System Workbench for STM32

How to properly convert c ++ project?

Most of the displayed error are due to misinterpretation by Eclipse CDT. You can remove then by rebuilding the index (Right click on the project, Index > Rebuild)

On console view, it says that the Error_Handler() does not exists. By default CubeMX should generate it in main.c, maybe something wrong happens in the generation process.

Here the default function :

  * @brief This function is executed in case of error occurrence.
  * @param None
  * @retval None
void Error_Handler(void) {
	/* USER CODE BEGIN Error_Handler */
	/* User can add his own implementation to report the HAL error return state */
	/* USER CODE END Error_Handler */