you need to have write permission into the directories into which things
will be installed.
+Note for Solaris users: The "ar" command is usually located in
+"/usr/ccs/bin", which is not in the default PATH. You will need to
+add this to your path for the "make" command. If you're using ksh or
+bash, use this command to build:
+
+ PATH=/usr/ccs/bin:$PATH make
+
Alternatively, on Win32 systems with Microsoft's Developer's Studio installed,
you can simply double-click on lib/expat.dsp from Windows Explorer and build
and install in the usual way from with DevStudio.