AC_MSG_CHECKING([which key database backend to use])
AC_MSG_RESULT([$enable_backend])
AC_CHECK_FILE([$srcdir/keydb_$enable_backend.c], ,AC_MSG_ERROR([non existent key database backend $enable_backend]))
AC_MSG_CHECKING([which key database backend to use])
AC_MSG_RESULT([$enable_backend])
AC_CHECK_FILE([$srcdir/keydb_$enable_backend.c], ,AC_MSG_ERROR([non existent key database backend $enable_backend]))