graphing features will not work. If you do not have it
installed, you must run `configure' with --without-libplot.
+ * ncurses and GNU readline are optional. They make for a more pleasant
+ command line interface.
+
+PSPP also has the following build dependencies:
+
+ * perl 5.6 or later.
+
Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002 Free Software
Foundation, Inc.