OK, thanks. In short:
Used 8.30 with MOS3.12 and SDK20191006 to compile 8.3.0, that works
Compiling 9.3.0 (did it anyway) or 8.4.0 under MOS3.13 with SDK20200422 both fail in stdc++ with NO_GCC_EXECUTABLES (-static flag supports fails, that is the difference with the 8.3.0 config log)
Not sure if I am doing something wrong. But I am seeing some small mistakes here and there in de sdk source too.
I'll await the new SDK [ Edited by Hedeon 01.07.2020 - 08:21 ]