* Perl (http://www.perl.org/), version 5.005_03 or later. Perl is
required during build but not after installation.
+ * Python (https://python.org/), version 2.7. Some tests require
+ Python; if it is missing, those tests will be skipped. PSPP
+ does not otherwise require Python.
+
* iconv, which should be installed as part of a Unix-like system.
If you don't have a version already, you can install GNU
libiconv (http://www.gnu.org/software/libiconv/).