Ho hum, more detective work.
Well, it wasn't my fault, apparently. The linux x64 packages on squeak.org that use the 5.3 VM - which appears to be every one from the 5.3 release package up to the latest on in files (http://files.squeak.org/6.0alpha/Squeak6.0alpha-20582-64bit/Squeak6.0alpha-2...) have this long list of ldd output.
I have a copy of the 202101260417 package (which I accidentally spotted in the not at all easy to spot releases page of the github site) and that does not have the issue. Thus I must guess that some make related problem had crept into the system and subsequently got solved.
The two versions can be retrieved and checked from https://github.com/OpenSmalltalk/opensmalltalk-vm/releases/tag/202101260417 and https://github.com/OpenSmalltalk/opensmalltalk-vm/releases/tag/202003021730 ... should any one be interested in the palaeontology of it.
tim -- tim Rowledge; tim@rowledge.org; http://www.rowledge.org/tim No single raindrop believes it is to blame for the flood