(runtime dependencies that are also build dependencies):
* GNU libiconv
- + Not needed on systems with glibc, on macOS, and NetBSD.
+ + Not needed on systems with glibc and on NetBSD.
But highly recommended on all other systems.
Needed for character set conversion of PO files from/to Unicode
and for the iconv_ostream class of libtextstyle.
- Other: https://repology.org/project/libiconv/versions
+ If it is installed in a nonstandard directory, pass the option
--with-libiconv-prefix=DIR to 'configure'.
+ + On mingw, a slim alternative is the 'win-iconv' package version 0.0.8
+ from https://github.com/win-iconv/win-iconv .
* GNU ncurses (preferred)
or libtermcap (discouraged) or a curses library (legacy).