I am using codesourcery ARM EABI toolchain to build code for a energy micro cortex M3 (EFM32GG290F1024)
I can build and run code fine however calling sscanf seems to give me 4 warnings:
"libcs3unhosted.a(unhosted-_close.o): warning: IO function '_close' used"
and similar warnings for '_lseek', '_read' and '_write'
I am looking to try to understand and remove these warnings
Any help would be much appreciated