Creating a Language Pack

From MDC

To create a language pack, or a localization repack, you first need the L10n Prerequisites.

In the .mozconfig, you want to have

ac_add_options --disable-compile-environment
mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/../firefox

Then type in your mozilla source dir

make -f client.mk configure

and go to your object dir

cd ../firefox

and (for Firefox)

cd browser/locales
make langpack-ab-CD

or, to create an installer

make installers-ab-CD

Unless you have the right en-US binaries in the dist directory, the latter will fail. The easiest way to find out what to put where is to just run the target, and to download the intended en-US binaries to the locations that the error messages say.