Cyrillic fonts in X Window.

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I have add string 'FontPath "/usr/X11R6/lib/X11/fonts/cyrillic/"' into 
xorg.conf, then I execute fc-cache. However, these fonts unavailable in 
X. What is going wrong?

fc-cache -v
Fontconfig error: Cannot load default config file
/usr/X11R6/lib/X11/fonts/TTF: skipping, 23 fonts, 0 dirs
/usr/X11R6/lib/X11/fonts/Type1: skipping, 29 fonts, 0 dirs
/usr/X11R6/lib/X11/fonts/cyrillic: skipping, 0 fonts, 0 dirs
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