$ make
rm -f ipwn *.o
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX cmd_base.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX cmd_expl.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX cmd_fd.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX cmd_fs.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX cmd_misc.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX cmd_privs.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX cmd_proc.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX cmd_sys.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX cmd_net.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX main.c
arm-apple-darwin-gcc       -c -Wall -s -DMACOSX misc.c
arm-apple-darwin-gcc       -Wall -s -DMACOSX  -o ipwn *.o
/usr/local/bin/arm-apple-darwin-ld: can't locate file for: -lSystem
collect2: ld returned 1 exit status
make: *** [ipwn] Error 1