mcal problems, help!!!

Could anybody give me instructions? I am installing mcal to my computer. but I have two problems: 1. I have a error when I complie the mcal , I got a error 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 The mstore cause a error, and I have no idea how to fix it. 2. how to make the mcal into the php? I didn't found any prameters like --wih-mcal in php help files. thanks very mcuh! Regards, Eric