[avr-chat] printf( float ) issues using avr-gcc w/ AVR Studio

[Reza Naima]

So I know that you're supposed to go into the configuration window and 
add the _flt libs to get floating point to work, but it doesn't seem to 
be working.  Besides that, what's odd is that when I add it, the program 
size gets smaller.  If I don't have any libs selected, then printf still
works somehow (without the float)?  What's going on here?

Here's the command line that avr studio generates :

avr-gcc.exe -mmcu=atmega64  main.o ringbuffer.o usb.o delay.o events.o 
uart.o kw1281.o timer.o    -lprintf_flt -lm  -o usbtest.elf


And are they ever going to fix the bug of constantly having 'UL' 
appended to the frequency in the project configuration.  Every time I go 
into it, I have to manually remove it, else I end up with ULUL in the 
#define and that breaks stuff.

Reza