$ cat /etc/locales.build
# This file names the list of locales to be built when glibc is installed.
# The format is <locale>/<charmap>, where <locale> is a locale from the
# /usr/share/i18n/locales directory, and <charmap> is name of one of the files
# in /usr/share/i18n/charmaps/. All blank lines and lines starting with # are
# ignored. Here is an example:
# en_US/ISO-8859-1

en_US/ISO-8859-1
en_US/UTF-8
ja_JP/UTF-8
el_GR/UTF-8
el_GR/ISO-8859-7