[vchkpw] error "make" courier-imap

hi, I've got this error during the "make" of courier-imap : authvchkpw.c: In function `auth_vchkpw_changepass': authvchkpw.c:142: warning: assignment from incompatible pointer type authvchkpw.c:151: dereferencing pointer to incomplete type authvchkpw.c:151: dereferencing pointer to incomplete ty

[vchkpw] Pb compil courier-imap

hi, I've this error when compiling courier-imap : authvchkpw.c: In function `auth_vchkpw_changepass': authvchkpw.c:142: warning: assignment from incompatible pointer type authvchkpw.c:151: dereferencing pointer to incomplete type authvchkpw.c:151: dereferencing pointer to incomplete type make[1]