gcc ypk.c -o ypk.bin
ypk.c: In function `main':
ypk.c:104: warning: passing arg 3 of pointer to function from incompatible pointer type
ypk.c:104: warning: passing arg 4 of pointer to function from incompatible pointer type
ypk.c:104: warning: passing arg 5 of pointer to function from incompatible pointer type
ypk.c:104: warning: passing arg 6 of pointer to function from incompatible pointer type
ypk.c:54: warning: return type of `main' is not `int'
/tmp/ccRr7A5D.o(.text+0x1a5): In function `main':
: undefined reference to `xdr_ypupdate_args'
collect2: ld returned 1 exit status