Changelog for fltk-devel-1.3.5-10.fc34.x86_64.rpm :

* Tue Jan 26 2021 Fedora Release Engineering - 1.3.5-10- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
* Thu Jan 21 2021 Adam Jackson - 1.3.5-9- Remove BuildRequires xprop entirely. If present, the configure script will call it looking for a property on the root window that Fedora\'s X server does not set, and which would not work anyway since there is no X server running in the buildroot, so we can just remove the dependency.
* Sat Aug 01 2020 Fedora Release Engineering - 1.3.5-8- Second attempt - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
* Tue Jul 28 2020 Adam Jackson - 1.3.5-7- BuildRequires xprop not xorg-x11-server-utils
* Mon Jul 27 2020 Fedora Release Engineering - 1.3.5-6- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
* Thu May 14 2020 Rex Dieter - 1.3.5-5- restore fltk_config.patch lost in last (cmake) merge
* Mon May 11 2020 Rex Dieter - 1.3.5-4- merge cmake PR- spec cosmetics
* Tue Jan 28 2020 Fedora Release Engineering - 1.3.5-3- Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild