The new GNU Emacs and semantic.cache

How can i prevent contaminating each directory with a file semantic-cache?
Set semanticdb-default-save-directory to a directory, by putting the following in your emacs init file (usually .emacs in your home directory):

(setq semanticdb-default-save-directory "~/.semantic")
(replace ~/.semantic with a different directory, if you wish.)

From http://ecb.sourceforge.net/docs/FAQ.html

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