mathml-dtd.noarch: W: explicit-lib-dependency libxml2
You must let rpm find the library dependencies by itself. Do not put unneeded
explicit Requires: tags.

mathml-dtd.noarch: W: files-duplicate /usr/share/xml/mathml/schema/dtd/2.0/copyright-software.html /usr/share/doc/packages/mathml-dtd/copyright-software.html
mathml-dtd.src:165: W: macro-in-comment %doc
mathml-dtd.src:94: W: macro-in-comment %{buildroot}
mathml-dtd.src:173: W: macro-in-comment %{sgml_dir}
mathml-dtd.src:94: W: macro-in-comment %{xml_dir}
There is a unescaped macro after a shell style comment in the specfile. Macros
are expanded everywhere, so check if it can cause a problem in this case and
escape the macro with another leading % if appropriate.

mathml-dtd.noarch: W: percent-in-%postun
The %postun scriptlet contains a "%" in a context which might indicate it
being fallout from an rpm macro/variable which was not expanded during build.
Investigate whether this is the case and fix if appropriate.

2 packages and 0 specfiles checked; 0 errors, 7 warnings.