always use --strip-unneeded for stripping

The behavior of --strip-unneeded and --strip-all are same for
executables and shared libraries.  For static libraries,
--strip-unneeded keeps the symbols needed for relocation processing so
it won't break static archives.

chapter01/changelog.xml

@@ -43,6 +43,16 @@
     appropriate for the entry or if needed the entire day's listitem.
     -->
 
+    <listitem>
+      <para>2021-07-27</para>
+      <itemizedlist>
+        <listitem>
+          <para>[xry111] - Always use --strip-unneeded for stripping.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
+    <listitem>
     <listitem>
       <para>2021-07-27</para>
       <itemizedlist>

chapter07/stripping.xml

@@ -87,7 +87,7 @@ umount $LFS/{sys,proc,run}</userinput></screen>
     symbols.</para>
 
     <para>Strip off debugging symbols from binaries:</para>
-<screen role="nodump"><userinput>strip --strip-debug $LFS/usr/lib/*
+<screen role="nodump"><userinput>strip --strip-unneeded $LFS/usr/lib/*
 strip --strip-unneeded $LFS/usr/{,s}bin/*
 strip --strip-unneeded $LFS/tools/bin/*</userinput></screen>
 
@@ -97,11 +97,6 @@ strip --strip-unneeded $LFS/tools/bin/*</userinput></screen>
     <quote>Binutils pass 2</quote>, since it is the one that knows how to strip
     our cross-compiled programs.--></para>
 
-    <para>Take care <emphasis>NOT</emphasis> to use
-    <parameter>--strip-unneeded</parameter> on the libraries. The static
-    ones would be destroyed and the toolchain packages would need to be
-    built all over again.</para>
-
     <para>At this point, you should have at least 5 GB of free space on the
     chroot partition that can be used to build and install Glibc and GCC in
     the next phase. If you can build and install Glibc, you can build and install

chapter08/strippingagain.xml

@@ -67,7 +67,7 @@ online_usrlib="libbfd-&binutils-version;.so libdl-&glibc-version;.so
 
 for BIN in $online_usrbin; do
     cp /usr/bin/$BIN /tmp/$BIN
-    strip --strip-all /tmp/$BIN
+    strip --strip-unneeded /tmp/$BIN
     install -vm755 /tmp/$BIN /usr/bin
     rm /tmp/$BIN
 done
@@ -79,11 +79,10 @@ for LIB in $online_usrlib; do
     rm /tmp/$LIB
 done
 
-find /usr/lib -type f -name \*.a \
-   -exec strip --strip-debug {} ';'
-
-for i in $(find /usr/lib -type f -name \*.so* ! -name \*dbg); do
-    case "$online_usrlib $save_usrlib" in
+for i in $(find /usr/lib -type f -name \*.so* ! -name \*dbg) \
+         $(find /usr/lib -type f -name \*.a)                 \
+         $(find /usr/{bin,sbin,libexec} -type f); do
+    case "$online_usrbin $online_usrlib $save_usrlib" in
         *$(basename $i)* ) 
             ;;
         * ) strip --strip-unneeded $i 
@@ -91,18 +90,6 @@ for i in $(find /usr/lib -type f -name \*.so* ! -name \*dbg); do
     esac
 done
 
-for i in $(find /usr/bin -type f); do
-    case "$online_usrbin" in
-        *$(basename $i)* ) 
-            ;;
-        * ) strip --strip-all $i 
-            ;;
-    esac
-done
-
-find /usr/{sbin,libexec} -type f \
-    -exec strip --strip-all {} ';'
-
 unset BIN LIB save_usrlib online_usrbin online_usrlib
 </userinput></screen>