Uninitialized constant Encoding::ASCII_8BIT (NameError)

e$B:G6a!"e(Btest-all e$B$,F0$+$J$$$h$&$J5$$,$7$^$9!#e(B

% make test-all
./miniruby -I./lib -I.ext/i686-linux ./runruby.rb --extout=.ext –
“./test/runner.rb” --basedir="./test" --runner=console
/home/akr/ruby/yarvo0/ruby/test/ruby/test_io_m17n.rb:7:in
<class:TestIO_M17N>': uninitialized constant Encoding::ASCII_8BIT (NameError) from /home/akr/ruby/yarvo0/ruby/test/ruby/test_io_m17n.rb:5:in<top (required)>’
from
/home/akr/ruby/yarvo0/ruby/lib/test/unit/collector/dir.rb:90:in
require' from /home/akr/ruby/yarvo0/ruby/lib/test/unit/collector/dir.rb:90:incollect_file’
from
/home/akr/ruby/yarvo0/ruby/lib/test/unit/collector/dir.rb:73:in block in recursive_collect' from /home/akr/ruby/yarvo0/ruby/lib/test/unit/collector/dir.rb:58:ineach’
from
/home/akr/ruby/yarvo0/ruby/lib/test/unit/collector/dir.rb:58:in
recursive_collect' from /home/akr/ruby/yarvo0/ruby/lib/test/unit/collector/dir.rb:63:inblock
in recursive_collect’
from
/home/akr/ruby/yarvo0/ruby/lib/test/unit/collector/dir.rb:58:in each' from /home/akr/ruby/yarvo0/ruby/lib/test/unit/collector/dir.rb:58:inrecursive_collect’
from
/home/akr/ruby/yarvo0/ruby/lib/test/unit/collector/dir.rb:29:in
collect' from /home/akr/ruby/yarvo0/ruby/lib/test/unit/autorunner.rb:68:inblock (1
levels) in class:AutoRunner
from
/home/akr/ruby/yarvo0/ruby/lib/test/unit/autorunner.rb:213:in []' from /home/akr/ruby/yarvo0/ruby/lib/test/unit/autorunner.rb:213:inrun’
from
/home/akr/ruby/yarvo0/ruby/lib/test/unit/autorunner.rb:12:in run' from ./test/runner.rb:9:in
make: *** [test-all] Error 1
zsh: exit 2 make test-all
% ./ruby -v
ruby 1.9.0 (2008-01-16 revision 0) [i686-linux]