Add an update-doc-version target

This is similar to the automation we added to libogg, it needs to be
invoked manually after the package version is changed in configure.ac
when the documentation boilerplate needs to be updated for a release.

Signed-off-by: fandehui <fandehui@xfusion.com>
(cherry picked from commit 8674d688c7e5448beb243dba54f8cbb5ae4e25ba)

Add-an-update-doc-version-target.patch

@@ -0,0 +1,37 @@
+From 210a8afa5e601dda3a05e73f0415df5e8c3b9ef6 Mon Sep 17 00:00:00 2001
+From: Ron <ron@debian.org>
+Date: Mon, 14 Nov 2016 18:27:31 +1030
+Subject: [PATCH] Add an update-doc-version target
+
+This is similar to the automation we added to libogg, it needs to be
+invoked manually after the package version is changed in configure.ac
+when the documentation boilerplate needs to be updated for a release.
+---
+ doc/Makefile.am | 14 ++++++++++++++
+ 1 file changed, 14 insertions(+)
+
+diff --git a/doc/Makefile.am b/doc/Makefile.am
+index ad81252..417a126 100644
+--- a/doc/Makefile.am
++++ b/doc/Makefile.am
+@@ -44,3 +44,17 @@ doc_DATA =  ao_append_option.html \
+             style.css
+ 
+ EXTRA_DIST = $(doc_DATA)
++
++update-doc-version:
++	@YEAR=$$(date +%Y); DAY=$$(date +%Y%m%d);					\
++	for f in $(srcdir)/*.html; do							\
++		sed -e "s/2010-[0-9]\{4\} Monty/2010-$$YEAR Monty/g"			\
++		    -e "s/libao version [0-9. -]\+/libao version $(VERSION) - $$DAY/g"	\
++			< $$f > $$f.tmp;						\
++		if diff -q $$f $$f.tmp > /dev/null; then				\
++			rm $$f.tmp;							\
++		else									\
++			mv $$f.tmp $$f;							\
++		fi;									\
++	done;
++
+-- 
+2.27.0
+

libao.spec

@@ -1,12 +1,13 @@
 Name:           libao
 Version:        1.2.0
-Release:        14
+Release:        15
 Summary:        A cross platform audio library
 License:        GPLv2+
 URL:            http://xiph.org/ao/
 Source0:        http://downloads.xiph.org/releases/ao/libao-%{version}.tar.gz
 Patch1:         0001-ao_pulse.c-fix-latency-calculation.patch
 Patch2:         d5221655dfd1a2156aa6be83b5aadea7c1e0f5bd.diff
+Patch3:         Add-an-update-doc-version-target.patch
 BuildRequires:  gcc alsa-lib-devel pkgconfig(libpulse)
 
 %description
@@ -69,5 +70,8 @@ rm -rf %{buildroot}/%{_docdir}/libao*
 
 
 %changelog
+* Wed Dec 27 2023 fandehui <fandehui@xfusion.com> - 1.2.0-15
+- Add an update-doc-version target
+
 * Thu Nov 28 2019 huyan <hu.huyan@huawei.com> - 1.2.0-14
 - Package Initialization