Checkpassword

I am attempting to install checkpassword-0.90 on a RedHat 7.0 Linux
operating system so that I can use pop3 with qmail.
I am following the HOW-TO found at http://cr.yp.to/checkpwd/install.html
When I run the 'make' command to compile the program I get the following
message:
	./load checkpassword prot.o unix. byte.a  'cat \
	shadow.lib'  'cat crypt.lib'  'cat s.lib'
	checkpassword.o: In function 'main':
	checkpassword.o(text+0x1a6): undefined reference to 'crypt'
	collect2: ld returned 1 exit status
	make: *** [checkpassword] Error 1

I get the same error when I use make setup check to install
/bin/checkpassword

Any guidance would be appreciated

Gregory C Burgher
Accounting Manager
Robert F Kazimour Co
Ph  319-364-8102 x213
Fax 319-297-7330
email: [email protected]