[avr-gcc-list] printf using floats

[Trampas]

I don't seem to be able to get the printf working with floats. 

Here is my flags:

## Compile options common for all C compilation units.
CFLAGS = $(COMMON)
CFLAGS += -Wall -gdwarf-2,-u, vfprintf -lprintf_flt -lm
-DF_CPU=16000000ULULULULULULUL  -Os -fsigned-char
CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d 

Does anyone have a suggestion?

Thanks
Trampas