[ruby-dev:42100] make distclean時エラーメッセージ

もるです。
連続で申し訳ございませんが。。。

lateau@usb:~/Downloads/ruby-1.9.2-p0_distcleaned> make distclean
...
rmdir: failed to remove `enc/trans': Directory not empty
make[1]: [clean-srcs] Error 1 (ignored)
rmdir: failed to remove `enc': Directory not empty
make[1]: [clean-srcs] Error 1 (ignored)
make[1]: Leaving directory `/home/lateau/.local/src/ruby-1.9.2-p0'

のようなエラーが発生します。

そして、この状態のものをdiffで配布状態のものと比較をして見ましたが、

lateau@usb:~/Downloads> diff ruby-1.9.2-p0/enc/trans/
ruby-1.9.2-p0_distcleaned/enc/trans/
Only in ruby-1.9.2-p0/enc/trans/: big5.c
Only in ruby-1.9.2-p0/enc/trans/: chinese.c
Common subdirectories: ruby-1.9.2-p0/enc/trans//CP and
ruby-1.9.2-p0_distcleaned/enc/trans//CP
Common subdirectories: ruby-1.9.2-p0/enc/trans//EMOJI and
ruby-1.9.2-p0_distcleaned/enc/trans//EMOJI
Only in ruby-1.9.2-p0/enc/trans/: emoji.c
Only in ruby-1.9.2-p0/enc/trans/: emoji_iso2022_kddi.c
Only in ruby-1.9.2-p0/enc/trans/: emoji_sjis_docomo.c
Only in ruby-1.9.2-p0/enc/trans/: emoji_sjis_kddi.c
Only in ruby-1.9.2-p0/enc/trans/: emoji_sjis_softbank.c
Only in ruby-1.9.2-p0/enc/trans/: escape.c
Common subdirectories: ruby-1.9.2-p0/enc/trans//GB and
ruby-1.9.2-p0_distcleaned/enc/trans//GB
Only in ruby-1.9.2-p0/enc/trans/: gb18030.c
Only in ruby-1.9.2-p0/enc/trans/: gbk.c
Only in ruby-1.9.2-p0/enc/trans/: iso2022.c
Only in ruby-1.9.2-p0/enc/trans/: japanese.c
Only in ruby-1.9.2-p0/enc/trans/: japanese_euc.c
Only in ruby-1.9.2-p0/enc/trans/: japanese_sjis.c
Common subdirectories: ruby-1.9.2-p0/enc/trans//JIS and
ruby-1.9.2-p0_distcleaned/enc/trans//JIS
Only in ruby-1.9.2-p0/enc/trans/: korean.c
Only in ruby-1.9.2-p0/enc/trans/: single_byte.c
Only in ruby-1.9.2-p0/enc/trans/: utf_16_32.c
Only in ruby-1.9.2-p0/enc/trans/: utf8_mac.c

となりdistcleanが消しすぎているような気がします。

--
Moru DRS