Mine

. $topsrcdir/browser/config/mozconfig
mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/ff
mk_add_options MOZ_CO_LOCALES=fr
ac_add_options --enable-ui-locale=fr
ac_add_options --prefix=/usr
ac_add_options --disable-tests
ac_add_options --with-system-zlib
ac_add_options --with-system-jpeg
ac_add_options --enable-strip
ac_add_options --disable-installer