Adjust qca instructions to build with either qt4 or qt5 as

the user desires.


git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@17063 af4574ff-66df-0310-9fd7-8a98e5e911e0

general/genlib/qca.xml

@@ -94,17 +94,29 @@
 
 <screen><userinput>sed -i 's/BSD/DEFAULT/' CMakeLists.txt</userinput></screen>
 
+    <para>This package can be built against <xref linkend="qt4"/> or <xref linkend="qt5"/>.
+    If using qt4, run:</para>
+
+<screen><userinput>QT_DIR=&qt4-dir; &amp;&amp;
+QT4_BUILD=ON</userinput></screen>
+
+    <para>If using qt5, run:</para>
+
+<screen><userinput>QT_DIR=&qt5-dir; &amp;&amp;
+QT4_BUILD=OFF</userinput></screen>
+
     <para>Install <application>Qca</application> by running the following
     commands:</para>
 
 <screen><userinput>mkdir build &amp;&amp;
 cd    build &amp;&amp;
 
-cmake -DCMAKE_INSTALL_PREFIX=&qt4-dir;            \
+cmake -DCMAKE_INSTALL_PREFIX=$QT_DIR            \
       -DCMAKE_BUILD_TYPE=Release                \
-      -DQT4_BUILD=ON                            \
+      -DQT4_BUILD=$QT4_BUILD                    \
       -DQCA_MAN_INSTALL_DIR:PATH=/usr/share/man \
       ..                                        &amp;&amp;
+unset QT_DIR QT4_BUILD                          &amp;&amp;
 
 make</userinput></screen>