STM32MP1 support available in SW4STM32

   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 download a short video showcasing this on the ac6-tools website (registration required).

System Workbench for STM32

Linker file cannot find my libraries


using a GNU toolset in order to link with a library called libstm32f429i-disco_hal_lib (or for sempicity libMyLib) you have to pass the name of library without the prefix “lib”. So in your case -lstm32f429i-disco_hal_lib (or -lMyLib).