There is no error.

$ rpmlint -i RPMS/x86_64/mysql-mroonga-* | grep E:
$ 

There are some warnings, but they are derived from sphinx bundled javascript.

rpmlint -i RPMS/x86_64/mysql-mroonga-* | grep W:
mysql-mroonga.x86_64: W: spelling-error Summary(en_US) fulltext -> full text, full-text, teletext
mysql-mroonga.x86_64: W: spelling-error Summary(en_US) searchable -> search able, search-able, unsearchable
mysql-mroonga.x86_64: W: spelling-error %description -l en_US fulltext -> full text, full-text, teletext
mysql-mroonga.x86_64: W: spelling-error %description -l en_US searchable -> search able, search-able, unsearchable
mysql-mroonga.x86_64: W: spelling-error %description -l en_US groonga -> grooming
mysql-mroonga.x86_64: W: spelling-error %description -l en_US Groonga -> Grooming
mysql-mroonga.x86_64: W: obsolete-not-provided mysql-groonga
mysql-mroonga-doc.x86_64: W: wrong-file-end-of-line-encoding /usr/share/doc/mysql-mroonga-doc-3.08/en/html/_static/jquery.js
mysql-mroonga-doc.x86_64: W: wrong-file-end-of-line-encoding /usr/share/doc/mysql-mroonga-doc-3.08/ja/html/_static/jquery.js

Here is the updated spec and SRPM.

Spec URL: http://kenhys.fedorapeople.org/mroonga/mysql-mroonga.spec
SRPM URL: http://kenhys.fedorapeople.org/mroonga/mysql-mroonga-3.08-2.fc19.src.rpm

* mark doc packages as noarch.
* remove redundant clean section.

Would you mind to explain what you are trying to achieve by this:
--- snip ---
%prep
%setup -q -n mroonga-%{version}
srpm=community-mysql-%{mysql_version}-%{mysql_release}.src.rpm
if [ ! -f ../../SRPMS/$srpm ]; then
    curl --output ../../SRPMS/$srpm %{mysql_download_base_url}/$srpm
    rpm -Uvh ../../SRPMS/$srpm
fi

%build
if [ ! -d ../mysql-%{mysql_version} ]; then
    rpmbuild -bp --define 'runselftest 0' --define 'optflags -O0' \
        ../../SPECS/community-mysql.spec
fi
--- snip ---
This all is not allowed in Fedora rpm.specs.

(In reply to Ralf Corsepius from comment #3)
> Would you mind to explain what you are trying to achieve by this:
> --- snip ---
> %prep
> %setup -q -n mroonga-%{version}
> srpm=community-mysql-%{mysql_version}-%{mysql_release}.src.rpm
> if [ ! -f ../../SRPMS/$srpm ]; then
>     curl --output ../../SRPMS/$srpm %{mysql_download_base_url}/$srpm
>     rpm -Uvh ../../SRPMS/$srpm
> fi
> 
> %build
> if [ ! -d ../mysql-%{mysql_version} ]; then
>     rpmbuild -bp --define 'runselftest 0' --define 'optflags -O0' \
>         ../../SPECS/community-mysql.spec
> fi
> --- snip ---
> This all is not allowed in Fedora rpm.specs.

Mroonga massively depends on specific version of MySQL.
Usually only -devel package is enough for header files, but it doen't match to Mroonga.
Mroonga requires MySQL source code(header files which doesn't distributed in devel package) to build.

Here is the list of required files which are not contained in devel package. (It depends on MySQL version because Mroonga supports MySQL 5.1/5.5/5.6 and so on)

* ft_global.h
* key.h
* spatial.h
* sql_base.h
* sql_optimizer.h
* sql_plugin.h
* sql_select.h
* sql_show.h
* sql_table.h

(In reply to HAYASHI Kentaro from comment #4)
> 
> Mroonga massively depends on specific version of MySQL.
> Usually only -devel package is enough for header files, but it doen't match
> to Mroonga.
> Mroonga requires MySQL source code(header files which doesn't distributed in
> devel package) to build.

Inside the build system, accessing the network for downloading software would not work anyway, so the whole attempt is not only forbidden, it is futile.

A strict dependency on a non-public MySQL interface asks for trouble, and you cannot avoid bundling the needed source files with Mroonga, *if* you manage to get a bundling exception from the FPC:
https://fedoraproject.org/wiki/Packaging:No_Bundled_Libraries

No response for years. Closing. Feel free to reopen if you want to continue.