Testing the libxml2 installation

- [Instructor] To test the libxml2 library installation, … I'm using this code, … which outputs the library's version number. … The header file at line 2 must be included. … Libxml/xmlversion.h … Now there's a problem in that … your installation may not have copied the header files … to the libxml folder. … They may instead be in a subfolder of libxml2, … and this issue must be addressed. … In a terminal window, … I'm going to save the current directory, … and then I'm going to go … to where the header files are stored in Unix, … the usr/include directory. … And what I want to look for … is to see if the libxml2 header file directory … has been installed here. … And, indeed, libxml2 is installed with a subdirectory … of libxml, which is where the header files are located. … This isn't good enough, … so we need to use some Unix kung fu to fix the situation. … I'm going to create an alias … in the usr/local/include directory … that's going to handle this problem for us. … What we need to do is to create an alias, or a link, …