Your package fails to build with the newest upcoming autoconf-2.71, which is part of a wide Fedora change. Please see the attached copr: https://copr.fedorainfracloud.org/coprs/odubaj/autoconf-2.70/packages/. More information about testing your package when building with autoconf available here: https://fedoraproject.org/wiki/Changes/Autoconf_271#How_To_Test
This report is misleading, because it turns out that the FTBS already started in F34 rawhide cycle, but wasn't reported. The root cause is the update to glib2 >= 2.68.0 which deprecated g_memdup() API.
FEDORA-2021-02cd27aee8 has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2021-02cd27aee8
FEDORA-2021-02cd27aee8 has been pushed to the Fedora 34 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-02cd27aee8` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-02cd27aee8 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2021-02cd27aee8 has been pushed to the Fedora 34 stable repository. If problem still persists, please make note of it in this bug report.