GNU ARM C/C++ Cross Compiler Support 18.104.22.168402191401
GNU ARM C/C++ STM32Fx Project Templates 22.214.171.124402191401
sections.ld:39: undefined symbol `_Main_Stack_Size' referenced in expression
it is `__Main_Stack_Size'
strange that in std perif project we do not see it.
Maybe _heap is not needed so expression expression at line 39 is not evaluated
I find it after copying and using the the files to an empty project