AC_CHECK_HEADERS(event.h, ,[AC_MSG_ERROR(libevent needed for nfsv4 support)])
AC_CHECK_HEADERS(nfsidmap.h, ,[AC_MSG_ERROR(libnfsidmap needed for nfsv4 support)])
dnl librpcsecgss already has a dependency on libgssapi,
AC_CHECK_HEADERS(event.h, ,[AC_MSG_ERROR(libevent needed for nfsv4 support)])
AC_CHECK_HEADERS(nfsidmap.h, ,[AC_MSG_ERROR(libnfsidmap needed for nfsv4 support)])
dnl librpcsecgss already has a dependency on libgssapi,