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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


Build configuration 'Release' causes ROM error

Using the -O3 compiler directive causes elf section `.rodata’ will not fit in region `ROM’. However compiler directives -O2, -O1, -O0 and -Os compile. Does anybody know why this is?
Tunisia

Could you share with us a project to investigate the issue ?

Because we cannot investigate/explain this unexpected behavior if we cannot reproduce it !

For some reason Workbench is creating large object files when compared to Coocox. An example graphics.o is 27K under Coocox and 289K under SWB. When reviewing other object files the difference between Coocox and SWB is approx 260K.

Unfortunately I am unable to share the project. I will create a shareable project which will show the problem.