hello ppl

i can't understand that problem, i compile courier-imap first and then i compile the vpopmail ,then i see authentication is not done then i recompile the courier-imap.but it give me whenever i do that and also not copy the authvchkpw file in the authentication directory. is there way to solve that.... thanks. that is the error *************************************** make[1]: Entering directory `/home/zafar/courier-imap-1.4.1/authlib' gcc -I/home/vpopmail/include -g -O2 -Wall -I.. -I./.. -o authvchkpw modauthvchkpw.o libauthmod.a libauth.a ../md5/libmd5.a ../sha1/libsha1.a -L/home/vpopmail/lib -lvpopmail -lm -lcrypt /usr/bin/ld: cannot find -lvpopmail collect2: ld returned 1 exit status make[1]: *** [authvchkpw] Error 1 make[1]: Leaving directory `/home/zafar/courier-imap-1.4.1/authlib' make: *** [all-recursive] Error 1 **************************************