请教各位，如何编译过呢？

root@HOME-WOOD:~/rootfs_workspace/tinylogin-1.4# make
bfin-uclinux-gcc
-s -Wl,-warn-common --static -o tinylogin tinylogin.o applets.o usage.o
addgroup.o adduser.o deluser.o getty.o login.o passwd.o sha1.o shadow.o
su.o sulogin.o vlock.o libpwd.a libbb.a -lcrypt
/root/skyeye/opt/uClinux/bfin-elf/bin/../lib/gcc/bfin-elf/4.1.2/../../../../bfin-elf/bin/ld.real: cannot find -lcrypt
collect2: ld returned 1 exit status
make: *** [tinylogin] Error 1
root@HOME-WOOD:~/rootfs_workspace/tinylogin-1.4#