* 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 or later (Python 3 is
+ fine). 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/).
0.18 and 0.19 have a bug that will prevent library detection,
but other versions should be fine.
- * GTK+ (http://www.gtk.org/), version 3.14.5 or later.
+ * GTK+ (http://www.gtk.org/), version 3.22.0 or later.
* GtkSourceView (http://projects.gnome.org/gtksourceview/)
version 3.4.0 or later.