Development/How to build/localized
From The Document Foundation Wiki
How to build a localized LibreOffice
First of all, you have to read Development/How to build before learning how to build a localized one.
Configuration for localization
The following configurations are needed for localization before running make.
Specify language with configure
Pass the `--with-lang` option to configure, e.g., through autogen.sh:
./autogen.sh --with-lang="de ja vi"
./autogen.sh --with-lang="ALL" # for all languages