RRace is written in C, so a working C compiler is compiled.
+To build the terminal UI, a curses library is required. Both
+[ncurses][ncurses-homepage] and [PDcurses][pdcurses-homepage] are free
+software curses implementations that are fully supported. Other
+implementations may work.
+
To build the UI for X11 systems, the [Motif toolkit][motif-homepage] is
required.
Optionally, in order to support localized program messages the [GNU libintl
-library][gettext-homepage] (included wit the GNU C library) is required.
+library][gettext-homepage] (included with the GNU C library) is required.
+[ncurses-homepage]: https://invisible-island.net/ncurses/
+[pdcurses-homepage]: https://pdcurses.org/
[motif-homepage]: https://sourceforge.net/projects/motif/
[gettext-homepage]: https://www.gnu.org/software/gettext/