perl: warning: Setting locale failed

症状
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LANGUAGE = "ja_JP.eucJP",
    LC_ALL = "ja_JP.eucJP",
    LANG = "ja_JP.eucJP"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

対応
setenv PERL_BADLANG 0