Share static data in doc package

Fonts add unnecessary size to doc package. Instead of local copy, link
to theme package static directory and reuse data already installed.

bind.spec

@@ -69,7 +69,7 @@ Summary:  The Berkeley Internet Name Domain (BIND) DNS (Domain Name System) serv
 Name:     bind
 License:  MPLv2.0
 Version:  9.16.6
-Release:  1%{?PATCHVER:.%{PATCHVER}}%{?PREVER:.%{PREVER}}%{?dist}
+Release:  2%{?PATCHVER:.%{PATCHVER}}%{?PREVER:.%{PREVER}}%{?dist}
 Epoch:    32
 Url:      https://www.isc.org/downloads/bind/
 #
@@ -428,6 +428,7 @@ This package provides a module which allows commands to be sent to rndc directly
 %package doc
 Summary:   Documentation for BIND
 Requires:  bind-license = %{epoch}:%{version}-%{release}
+Requires:  python3-sphinx_rtd_theme
 BuildArch: noarch
 
 %description doc
@@ -817,8 +818,18 @@ popd
 %if %{with DOC}
 mkdir -p ${RPM_BUILD_ROOT}%{_pkgdocdir}
 cp -a build/doc/arm/_build/html ${RPM_BUILD_ROOT}%{_pkgdocdir}
-cp -a build/doc/man/_build/html ${RPM_BUILD_ROOT}%{_pkgdocdir}/html/man
-rm -rf ${RPM_BUILD_ROOT}%{_pkgdocdir}/html{,/man}/.{buildinfo,doctrees}
+rm -rf ${RPM_BUILD_ROOT}%{_pkgdocdir}/html/.{buildinfo,doctrees}
+# Share static data from original sphinx package
+THEMEDIR=$(rpm -ql python3-sphinx_rtd_theme | grep 'sphinx_rtd_theme/static$')
+for DIR in "$THEMEDIR"/*
+do
+  BASE=$(basename -- "$DIR")
+  BINDTHEMEDIR="${RPM_BUILD_ROOT}%{_pkgdocdir}/html/_static/$BASE"
+  if [ -d "$BINDTHEMEDIR" ]; then
+    rm -rf "$BINDTHEMEDIR"
+    ln -s "$DIR" "$BINDTHEMEDIR"
+  fi
+done
 %endif
 %if %{with DOCPDF}
 cp -a build/doc/arm/Bv9ARM.pdf ${RPM_BUILD_ROOT}%{_pkgdocdir}
@@ -1227,6 +1238,9 @@ fi;
 %endif
 
 %changelog
+* Mon Sep 14 2020 Petr Menšík <pemensik@redhat.com> - 32:9.16.6-2
+- Share static data in doc package
+
 * Sat Aug 22 2020 Petr Menšík <pemensik@redhat.com> - 32:9.16.6-1
 - Update to 9.16.6