Installation of libxml2
        
        
          At first, fix an issue causing xmlcatalog to emit bogus warnings
          when a new catalog file is created. The patch will modify the
          building system, so regenerate the building scripts after applying
          the patch:
        
        patch -Np1 -i ../libxml2-2.13.3-upstream_fix-2.patch
        
          Install libxml2 by running the
          following commands:
        
        ./configure --prefix=/usr           \
            --sysconfdir=/etc       \
            --disable-static        \
            --with-history          \
            --with-icu              \
            PYTHON=/usr/bin/python3 \
            --docdir=/usr/share/doc/libxml2-2.13.3 &&
make
        
          If you downloaded the test suite, issue the following command:
        
        tar xf ../xmlts20130923.tar.gz
        
          To test the results, issue: make
          check > check.log. This command will print
          several lines of error messages like “Failed to
          parse xstc/...” because some test files are
          missing and these messages can be safely ignored. A summary of the
          results can be obtained with grep -E
          '^Total|expected|Ran' check.log. If Valgrind-3.23.0 is
          installed and you want to check for memory leaks, replace
          check with
          check-valgrind.
        
        
          ![[Note]](../images/note.png) 
          
            Note
          
          
            The tests use http://localhost/ to test parsing of
            external entities. If the machine where you run the tests serves
            as a web site, the tests may hang, depending on the content of
            the file served. It is therefore recommended to shut down the
            server during the tests, as the root user:
          
          systemctl stop httpd.service
         
        
          Now, as the root user:
        
        make install
        
          Finally, prevent some packages from unnecessarily linking to ICU
          using the following commands as the root user:
        
        rm -vf /usr/lib/libxml2.la &&
sed '/libs=/s/xml2.*/xml2"/' -i /usr/bin/xml2-config
       
      
        
          Command Explanations
        
        
          --disable-static: This
          switch prevents installation of static versions of the libraries.
        
        
          --with-history: This switch
          enables Readline support when
          running xmlcatalog or
          xmllint in shell
          mode.
        
        
          --with-icu: This switch
          enables support for ICU, which
          provides additional Unicode support. This is needed for some
          packages in BLFS, such as for QtWebEngine.
        
        
          PYTHON=/usr/bin/python3:
          Allows building the libxml2 module with Python3 instead of Python2.