"uninitialized constant Encoding::UTF_8" in rb_require

Ruby
1

When load script with rb_require I got error about Encoding constants.
Ruby 1.9.2

2

Encoding.list return [#Encoding:ASCII-8BIT, #Encoding:UTF-8,
#Encoding:US-ASCII] in program and return more encoding in irb.
As I understood, I have to load required encodings, but cann’t find any
documentation about it.

3

Fixed.
I added next string into ruby initialization code as ruby interpreter
do:

rb_enc_find_index(“encdb”);