Create doc subpackage

Subpackage is there just as shared documentation for main package.
I want to stay in original directory, files should not move since they
were in bind package.

Documentation is not regenerated, but used as shipped by upstream.

bind.spec

@@ -24,6 +24,7 @@
 %bcond_with    GEOIP
 # New MaxMind GeoLite support
 %bcond_without GEOIP2
+%bcond_without DOC
 %if 0%{?fedora} >= 28
 %bcond_without UNITTEST
 %bcond_without DNSTAP
@@ -37,6 +38,7 @@
 
 %{?!bind_uid:  %global bind_uid  25}
 %{?!bind_gid:  %global bind_gid  25}
+%{!?_pkgdocdir:%global _pkgdocdir %{_docdir}/%{name}-%{version}}
 %global        bind_dir          /var/named
 %global        chroot_prefix     %{bind_dir}/chroot
 %if %{with SDB}
@@ -66,7 +68,7 @@ Summary:  The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) serv
 Name:     bind
 License:  MPLv2.0
 Version:  9.11.20
-Release:  2%{?PATCHVER:.%{PATCHVER}}%{?PREVER:.%{PREVER}}%{?dist}
+Release:  3%{?PATCHVER:.%{PATCHVER}}%{?PREVER:.%{PREVER}}%{?dist}
 Epoch:    32
 Url:      https://www.isc.org/downloads/bind/
 #
@@ -242,7 +244,7 @@ BuildRequires:  libmaxminddb-devel
 BuildRequires:  fstrm-devel protobuf-c-devel
 %endif
 # Needed to regenerate dig.1 manpage
-BuildRequires: docbook-style-xsl, libxslt
+BuildRequires:  docbook-style-xsl, libxslt
 %if %{with TSAN}
 BuildRequires: libtsan
 %endif
@@ -496,6 +498,25 @@ BuildArch: noarch
 %description -n python3-bind
 This package provides a module which allows commands to be sent to rndc directly from Python programs.
 
+%if %{with DOC}
+%package doc
+Summary:   BIND 9 Administrator Reference Manual
+Requires:  bind-license = %{epoch}:%{version}-%{release}
+BuildArch: noarch
+
+%description doc
+BIND (Berkeley Internet Name Domain) is an implementation of the DNS
+(Domain Name System) protocols. BIND includes a DNS server (named),
+which resolves host names to IP addresses; a resolver library
+(routines for applications to use when interfacing with DNS); and
+tools for verifying that the DNS server is operating properly.
+
+This package contains BIND 9 Administrator Reference Manual
+in HTML and PDF format.
+%end
+
+%endif
+
 %if %{with EXPORT_LIBS}
 %package export-libs
 Summary:   ISC libs for DHCP application
@@ -745,6 +766,11 @@ pushd bin/python
 make man
 popd
 
+%if %{with DOC}
+  # Does not work. Use upstream generated documentation instead.
+  # make doc
+%endif
+
 %if %{with DLZ}
   pushd contrib/dlz
   pushd modules
@@ -1066,6 +1092,11 @@ ln -s dnssec-verify.8.gz dnssec-verify-pkcs11.8.gz
 popd
 %endif
 
+%if %{with DOC}
+mkdir -p ${RPM_BUILD_ROOT}%{_pkgdocdir}
+cp -a doc/arm/*.html doc/arm/*.pdf ${RPM_BUILD_ROOT}%{_pkgdocdir}
+%endif
+
 # Ghost config files:
 touch ${RPM_BUILD_ROOT}%{_localstatedir}/log/named.log
 
@@ -1292,7 +1323,6 @@ fi;
 %{_mandir}/man8/rndc-confgen.8*
 %{_mandir}/man8/named-journalprint.8*
 %doc CHANGES README named.conf.default
-%doc doc/arm/*html doc/arm/*pdf
 %doc sample/
 
 # Hide configuration
@@ -1602,8 +1632,17 @@ fi;
 %{python3_sitelib}/*.egg-info
 %{python3_sitelib}/isc/
 
+%if %{with DOC}
+%files doc
+%dir %{_pkgdocdir}
+%doc %{_pkgdocdir}/*.html
+%doc %{_pkgdocdir}/*.pdf
+%endif
 
 %changelog
+* Tue Jun 23 2020 Petr Menšík <pemensik@redhat.com> - 32:9.11.20-3
+- Move documentation to separate bind-doc package
+
 * Sat Jun 20 2020 Adrian Reber <adrian@lisas.de> - 32:9.11.20-2
 - Rebuilt for protobuf 3.12