Hi, Some backporting trouble might or might not indicate a bug in the package, so preferably you should ask help with backporting through some other communication channel. Nevertheless, here's my thoughts on the issue.
(Looks like the compilation error is related to libzstd. You tried to build with 0.5.1-1 while cosmic's libzstd version number starts with 1.3.5.[1] A different major version might quite possibly have a different C API. Xenial-updates has a 1.3.1 version available though.) Ah, please disregard the previous paragraph. I now found another buildlog where I can see that there is the newer version of libzstd-dev is picked up and the compilation succeeds.[2] [1] https://launchpad.net/ubuntu/+source/libzstd [2] https://launchpadlibrarian.net/395168383/buildlog_ubuntu-xenial-amd64.rpm_4.14.1+dfsg1-4.1~xenial~ppa5_BUILDING.txt.gz -- Juhani ** Changed in: rpm (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1800411 Title: rpm source package from cosmic does not build on xenial To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rpm/+bug/1800411/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
