In order to support the new MiniDebugFeature gdb needs to understand the new MiniDebugInfo data.
Created attachment 593293 [details]
Look for and use libzma on ELF systems
Created attachment 593295 [details]
Support lzma compressed .gnu_debugdata sections
The required changes to rpm/redhat-rpm-build has now landed in rawhide.
For posting upstream it will need also an update for gdb/NEWS and gdb/doc/gdb.texinfo.