changed patch CPPFLAGS part to match how it's done with for example

chapter5/sed


git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1518 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter05/patch-inst.xml

@@ -3,7 +3,9 @@
 
 <para>Install Patch by running the following commands:</para>
 
-<para><screen><userinput>CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE" ./configure --prefix=$LFS/usr &amp;&amp;
+<para><screen><userinput>export CPPFLAGS=-D_GNU_SOURCE &amp;&amp;
+./configure --prefix=$LFS/usr &amp;&amp;
+unset CPPFLAGS &amp;&amp;
 make LDFLAGS=-static &amp;&amp;
 make install</userinput></screen></para>
 

chapter06/patch-inst.xml

@@ -3,7 +3,9 @@
 
 <para>Install Patch by running the following commands:</para>
 
-<para><screen><userinput>CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE" ./configure --prefix=/usr &amp;&amp;
+<para><screen><userinput>export CPPFLAGS=-D_GNU_SOURCE &amp;&amp;
+./configure --prefix=/usr &amp;&amp;
+unset CPPFLAGS &amp;&amp;
 make &amp;&amp;
 make install</userinput></screen></para>