undefined reference to 'floor'

Hello
I have a problem when compiling an application for a
card Advantech pci1730 
when compiling  gcc salida.c -l comedi -o salida    it
marks error 
  
/usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../lib/libcomedi.so:
undefined reference to 'floor'
collect2:ld returned l exit status
 
they can help me?
alex


__________________________________________________
Correo Yahoo!
Espacio para todos tus mensajes, antivirus y antispam ¡gratis! 
Regístrate ya - http://correo.espanol.yahoo.com/ 

Received on 2007-08-13Z14:19:46