Please bump the release tag in the .spec file every time you make a change instead of replacing the old version. This makes it harder to compare revisions

I just took a look at the debug issue. It seems to be caused by the fact that some RPM variables aren't set automatically as you don't have a %setup tag in the %prep section. It is possible to use this tag without having it trying to extract source files. You can try to add these lines just after the 7za command: cd .. %setup -q -T -D -n %{name}-%{version} With this change, some of the 'cd' calls in other sections can be removed as they're unneeded

In your original .spec file you tried to install the .dll files to libdir and name it .dll.a, but that isn't going to work. In your latest .spec file you already seem to have resolved this issue and also made it generate an import library which is good. Your original .spec file also missed an %{?mingw_debug_package} line, but you seem to have added this in your latest spec file. Again, please bump the release tag and publish a new .src.rpm every time you make a change