SuperH Linux Math library

Hi all,

I'm trying to compile a small program (IIR oscillator) and want to use
atan, cos and sin functions including the math.h library. The compiler
doesn't complain about not finding the math.h file, indeed he finds it.

But:

he@so:~/codec$ sh3-linux-gcc -I /usr/sh3-linux/include codec.c
/tmp/ccUqutnQ.o: In function `main':
/tmp/ccUqutnQ.o(.text+0x180): undefined reference to `atan'
/tmp/ccUqutnQ.o(.text+0x19c): undefined reference to `cos'
/tmp/ccUqutnQ.o(.text+0x1a0): undefined reference to `sin'
collect2: ld returned 1 exit status

What's wrong?

Thank you.

Ivan.