I’m trying to integrate RTEMS into my project. My project was initially built with GCC toolchain. It currently runs on freeRTOS with stm32f4 as MCU and now I plan to change the real-time OS to RTEMS. However, RTEMS uses a custom cross-toolchain based on GCC. So to use RTEMS I figured the correct way to approach this is to compile the RTEMS using GCC rather than the other way around.