Fix x265 if git has not been installed.

Original problem report from rhubarbpieguy on blfs-support,
fix found at gentoo.

introduction/welcome/changelog.xml

@@ -41,6 +41,15 @@
       </itemizedlist>
     </listitem>
     -->
+    <listitem>
+      <para>March 25th, 2022</para>
+      <itemizedlist>
+        <listitem>
+          <para>[ken] - Fix x265 when git has not been installed.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>March 24th, 2022</para>
       <itemizedlist>

multimedia/libdriv/x265.xml

@@ -103,7 +103,8 @@
 <screen><userinput>mkdir bld &amp;&amp;
 cd    bld &amp;&amp;
 
-cmake -DCMAKE_INSTALL_PREFIX=/usr ../source &amp;&amp;
+cmake -DCMAKE_INSTALL_PREFIX=/usr \
+      -DGIT_ARCHETYPE=1 ../source &amp;&amp;
 make</userinput></screen>
 
     <para>
@@ -122,6 +123,13 @@ rm -vf /usr/lib/libx265.a </userinput></screen>
   <sect2 role="commands">
       <title>Command Explanations</title>
 
+      <para>
+        <command>-DGIT_ARCHETYPE=1</command>: Upstream no longer provides
+        releases. BLFS is using a git snapshot, but if the builder has not
+        installed <application>git</application> the build will not install
+        the shared library or the pkgconfig file without this switch.
+      </para>
+
       <para>
         <command>rm -vf /usr/lib/libx265.a</command>: BLFS does not recommend
         using static libraries.