This is a tracking bug for Change: GifLib5
For more details, see: https://fedoraproject.org/wiki/Changes/GifLib5
Update the giflib package to the latest giflib-5.x version (currently 5.1.4).
giflib-5.1.4 is built and nearly all dependent packages are rebuilt. The missing ones are emacs and mathgl, which are FTBFS due to unrelated issues.