* pkg-config (only if you need to regenerate configure after
modifying configure.ac).
+ * 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/).
+
* Optional: libncurses. Without it, PSPP will assume it is
running in an 80x25 terminal.