AC_CHECK_LIB(pam, pam_start, , AC_MSG_ERROR([*** must have PAM]))
AC_CHECK_LIB(z, deflate, , AC_MSG_ERROR([*** must have zlib]))
AC_CHECK_LIB(pam, pam_start, , AC_MSG_ERROR([*** must have PAM]))
AC_CHECK_LIB(z, deflate, , AC_MSG_ERROR([*** must have zlib]))