AC_DEFUN([DOVECOT_CRYPT], [
AC_CHECK_FUNC(crypt,, [
AC_CHECK_LIB(crypt, crypt, [
AUTH_LIBS="-lcrypt $AUTH_LIBS"
CRYPT_LIBS="-lcrypt"
], [
AC_MSG_ERROR([crypt() wasn't found])
])
])
AC_SUBST(CRYPT_LIBS)
])