Error in GDS_ALLOW_EMPTY

[hgoncho]

I am currently designing a SoC that implements RAM and register macros using the IHP-SG13 technology. In my config.mk file, I added the following line to allow empty cells during the GDS merge process:
export GDS_ALLOW_EMPTY = .BITKIT.|.CORNER.|.EDGE.|.TAP.|.LE_con.|.POWER_ramtap.

However, during the final GDS merging step (do-gds-merged), I consistently encounter the following error:

[INFO] GDS_ALLOW_EMPTY=RM_IHPSG13_1P_BITKIT_16x2_(CORNER|EDGE_TB|LE_con_corner|LE_con_edge_lr|LE_con_tap_lr|POWER_ramtap|TAP|TAP_LR) RM_IHPSG13_2P_BITKIT_16x2_(CORNER|EDGE_TB|LE_con_corner|LE_con_edge_lr|LE_con_tap_lr|POWER_ramtap|TAP|TAP_LR)
[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_2P_BITKIT_16x2_LE_con_edge_lr' has no matching GDS/OAS cell. Cell will be empty.
[INFO] No orphan cells in the final layout
Command exited with non-zero status 12
make[1]: *** [Makefile:681: do-gds-merged] Error 12
It appears that the GDS_ALLOW_EMPTY variable is not correctly overriding the platform defaults or is not being parsed as expected by the KLayout script, leading to a failure even though the cells are identified.

[maliberty]

The script uses regex.match not regex.search so I expect your pattern doesn't match anything.