gcc -D__KERNEL__ -I/usr/src/linux-2.1.20/include -Wall
-Wstrict-prototypes -O2 -fomit-frame-pointer -pipe -fno-strength-reduce
-m486 -malign-loops=2 -malign-jumps=2 -malign-functions=2 -DCPU=586
-DMODULE -DMODVERSIONS
-include /usr/src/linux-2.1.20/include/linux/modversions.h
-c -o st.o
st.c
st.c: In function `st_attach':
st.c:3050: `ST_SYSV' undeclared (first use this function)
st.c:3050: (Each undeclared identifier is reported only once
st.c:3050: for each function it appears in.)