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.

To understand which RTEMS source files are required, I used RTEMS “BSP build guidelines” and built the project using ARM-RTEMS cross-toolchain in Linux, also verified the files using yml instructions written for the source-builder.

Because ARM-RTEMS is based on GCC and what I have noticed as the difference between these two toolchains is some type definitions in the header library, I believe if I give the address of the header library, this difference in the header library is taken care of. May even require some macro and assembly syntax modification, nothing impossible to do, I believe.

I’ve just started to do the compilation, and I want to ask your opinions if you think this is manageable too. Or if you have any insights.