libpkgconf-0:2.1.0-1.fc40 broke libpkgconf.so.4() ABI without bumping its soname. See <https://github.com/pkgconf/pkgconf/issues/347>. build2 links to that library and it might be affected. If it is, you should rebuild build2 against the new pkgconf.
FEDORA-2024-6800fca69e (build2-0.16.0-4.fc40~bootstrap) has been submitted as an update to Fedora 40. https://bodhi.fedoraproject.org/updates/FEDORA-2024-6800fca69e
FEDORA-2024-6800fca69e has been pushed to the Fedora 40 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2024-6800fca69e` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2024-6800fca69e See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2024-6800fca69e (build2-0.16.0-4.fc40~bootstrap) has been pushed to the Fedora 40 stable repository. If problem still persists, please make note of it in this bug report.