fix unnecessary build failure due to missing tree_index.sgml in gtk-doc output

0001-libpsl-0.21.0-gtk-doc.patch

@@ -0,0 +1,31 @@
+From 5c1db71740244f38a4543457e74d2563d8d7b36e Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Sat, 1 Jun 2019 13:09:41 +0200
+Subject: [PATCH] gtk-doc: do not include tree_index.sgml
+
+gtk-doc 1.30 no longer generates the file if the object tree is empty.
+
+Upstream-commit: 87d1add318b5e5d09977f7f374e923577b6ff3be
+Signed-off-by: Kamil Dudka <kdudka@redhat.com>
+---
+ docs/libpsl/libpsl-docs.sgml | 4 ----
+ 1 file changed, 4 deletions(-)
+
+diff --git a/docs/libpsl/libpsl-docs.sgml b/docs/libpsl/libpsl-docs.sgml
+index 335d241..88c7ba8 100644
+--- a/docs/libpsl/libpsl-docs.sgml
++++ b/docs/libpsl/libpsl-docs.sgml
+@@ -22,10 +22,6 @@
+         </para>
+         <xi:include href="xml/libpsl.xml"/>
+   </chapter>
+-  <chapter id="object-tree">
+-    <title>Object Hierarchy</title>
+-     <xi:include href="xml/tree_index.sgml"/>
+-  </chapter>
+   <index id="api-index-full">
+     <title>API Index</title>
+     <xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
+-- 
+2.21.1
+

libpsl.spec

@@ -1,6 +1,6 @@
 Name:           libpsl
 Version:        0.21.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        C library for the Publix Suffix List
 License:        MIT
 URL:            https://rockdaboot.github.io/libpsl
@@ -17,6 +17,9 @@ BuildRequires:  publicsuffix-list
 BuildRequires:  python3-devel
 Requires:       publicsuffix-list-dafsa
 
+# fix unnecessary build failure due to missing tree_index.sgml in gtk-doc output
+Patch1:         0001-libpsl-0.21.0-gtk-doc.patch
+
 %description
 libpsl is a C library to handle the Public Suffix List. A "public suffix" is a
 domain name under which Internet users can directly register own names.
@@ -144,6 +147,9 @@ make check || cat tests/test-suite.log
 %{_mandir}/man1/psl-make-dafsa.1*
 
 %changelog
+* Thu Jan 30 2020 Kamil Dudka <kdudka@redhat.com> - 0.21.0-4
+- fix unnecessary build failure due to missing tree_index.sgml in gtk-doc output
+
 * Wed Jan 29 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.21.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild