Gengis Kanhg Toledo "RamXrez" <gengiskanhg.geo@xxxxxxxxx> writes: > The problem: > > $ g ./main.cc -o prueba > /home/<myname>/tmp/ccEOfejM.o(.text 0x11): In function > `main': > : undefined reference to `foo()' > collect2: ld returned 1 exit status You didn't link against foo.o. gcc will only include foo.o if you tell it too. Ian