/usr/lib/GNUstep/Bundles/SQLClient1.7/ECPG.bundle/stamp.make is in libsqlclient1.7 1.7.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1
OLD_GNUSTEP_STAMP_ASTRING = _SQLClientECPG-