I made the hard work and used a tool called diff(1): $ diff -wur zlib-1.2.11 ../ghostscript/ghostscript-9.54.0/zlib/ | diffstat 0 files changed There is no ghostscript specific modification. its the pure upstream tarball, without any fixes or patches. I also already submitted a fix, almost 3 weeks ago: https://build.opensuse.org/request/show/969841 please consider reviewing it.