ihp: sg13g2: Can we disable empty cells?

[dnltz]

When using sram macros from the IHP Open PDK (SG13G2), openroad fails when merging GDS pretty much at the end:

[INFO] Copying toplevel cell 'SG13G2Top'
[INFO] Checking for missing cell from GDS/OAS...
[ERROR] LEF Cell 'RM_IHPSG13_1P_BITKIT_16x2_TAP' has no matching GDS/OAS cell. Cell will be empty.
[ERROR] LEF Cell 'RM_IHPSG13_1P_BITKIT_16x2_EDGE_TB' has no matching GDS/OAS cell. Cell will be empty.
[ERROR] LEF Cell 'RM_IHPSG13_1P_BITKIT_16x2_LE_con_edge_lr' has no matching GDS/OAS cell. Cell will be empty.
[ERROR] LEF Cell 'RM_IHPSG13_1P_BITKIT_16x2_LE_con_tap_lr' has no matching GDS/OAS cell. Cell will be empty.
[ERROR] LEF Cell 'RM_IHPSG13_1P_BITKIT_16x2_TAP_LR' has no matching GDS/OAS cell. Cell will be empty.
[ERROR] LEF Cell 'RM_IHPSG13_1P_BITKIT_16x2_POWER_ramtap' has no matching GDS/OAS cell. Cell will be empty.
[ERROR] LEF Cell 'RM_IHPSG13_1P_BITKIT_16x2_LE_con_corner' has no matching GDS/OAS cell. Cell will be empty.
[ERROR] LEF Cell 'RM_IHPSG13_1P_BITKIT_16x2_CORNER' has no matching GDS/OAS cell. Cell will be empty.
[INFO] Checking for orphan cell in the final layout...
[INFO] No orphan cells
[INFO] Reading seal GDS/OAS file...

According to IHP, that's intended and nothing to worry about. However, it fails with status 8 and you need to run openroad again to get 6_1_merged.gds.

Is it possible to whitelist some cells during this step to let openroad continue?

[maliberty]

GDS_ALLOW_EMPTY allows such. It takes a regex to allow. For example export GDS_ALLOW_EMPTY ?= fakeram.* in asap7

[dnltz]

Thank you! I will also discuss with IHP if that can go into the platform .mk file.