Update currnet qtwebengien to build and run on glibc-2.34.

introduction/welcome/changelog.xml

@@ -41,6 +41,17 @@
       </itemizedlist>
     </listitem>
     -->
+    <listitem>
+      <para>August 14th, 2021</para>
+      <itemizedlist>
+        <listitem>
+          <para>Update qtwebengine-20210401 to use build_fixes-4 patch for
+          glibc-2.34. Please note that binutils-2.37 from LFS-dev needs the
+          patch which is now in LFS.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>August 13th, 2021</para>
       <itemizedlist>

x/lib/qtwebengine.xml

@@ -56,6 +56,14 @@
       future chromium vulnerabilities. -->
 
     <warning>
+      <!-- FIXME : remove this para before we release 11.0 -->
+      <para>
+        <emphasis>If you are using a development version of LFS with binutils-2.37,
+        you must rebuild binutils with the patch which is now in LFS, otherwise the
+        build will eventually fail with a message 'error adding symbols: malformed
+        archive'.</emphasis>
+      </para>
+ 
       <para>
         QtWebEngine uses a forked copy of chromium, and is therefore vulnerable
         to many issues found there. The Qt developers have always preferred to
@@ -218,7 +226,7 @@
       <listitem>
         <para>
           Required patch:
-          <ulink url="&patch-root;/qtwebengine-&qtwebengine-version;-build_fixes-3.patch"/>
+          <ulink url="&patch-root;/qtwebengine-&qtwebengine-version;-build_fixes-4.patch"/>
         </para>
       </listitem>
     </itemizedlist>
@@ -300,7 +308,7 @@
       Next apply a patch to fix several issues that can prevent the build working:
     </para>
 
-<screen><userinput remap="pre">patch -Np1 -i ../qtwebengine-&qtwebengine-version;-build_fixes-3.patch</userinput></screen>
+<screen><userinput remap="pre">patch -Np1 -i ../qtwebengine-&qtwebengine-version;-build_fixes-4.patch</userinput></screen>
 
 <!-- start of commands for git versions only -->
     <para>