Mcal problems! Thanks in advance!!!

Hi, man dose anybody know the mcal ? I have tried it for zillions times, and failed zillions times. I can't get mcal through. I download the mcal 0.4 and driver 0.4 put the driver directory /icap and /mstore under the /libmcal 1. go to /icap, make it. it is normal. 2. go to /mstore, make it, it has some warns. gcc -O0 -Wall -g -I.. -c mstore.c -o mstore.o mstore.c: In function `mstore_validuser': mstore.c:103: warning: implicit declaration of function `crypt' mstore.c:103: warning: passing arg 1 of `strcmp' makes pointer from integer with out a cast mstore.c: In function `mstore_snooze': mstore.c:419: warning: too many arguments for format ld -r -o mstore_driver.o mstore.o touch bootstrap.in 3. go back to the /libmcal ./configure --with-icap --with-mstore make then I got the fatal error: rm -f libmcal.a ar r libmcal.a mcal.o datetime.o icap/icap_driver.o mstore/mstore_driver.o gcc -Wall -g -o tester tester.o libmcal.a libmcal.a(mstore_driver.o): In function `mstore_validuser': /home/test/Libmcal/libmcal/mstore/mstore.c:103: undefined reference to `crypt' collect2: ld returned 1 exit status make: *** [tester] Error 1 I have checked the mstore.c code, can't find anything wrong with it. could u tell me what is wrong with it, it drive me nuts. anyway where can get more documents about it? thanks millions! Eric