( grep -q "^$func$" || echo $func ) <<EOF
gbm_device_get_fd
gbm_device_get_backend_name
gbm_device_is_format_supported
gbm_device_destroy
( grep -q "^$func$" || echo $func ) <<EOF
gbm_device_get_fd
gbm_device_get_backend_name
gbm_device_is_format_supported
gbm_device_destroy