compiing m68k target (make OS=os3) with m68k-amigaos-gcc (GCC) 6.5.0b
i encounter a number of warnings like that:
private.h:247:126: warning: `saveds' attribute is only usable with fbaserel [-Wattributes]
d2, LONG), REG(d3, LONG flags), REG(a0, struct BitMap *));
perhaps -fbaserel should be added to gcc option, eventually after compiler/version detection.