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-- The following OPTIONAL packages could NOT be located on your system.
-- Consider installing them to enable more features from this software.
-----------------------------------------------------------------------------
* libspectre (0.2 or higher) <http://libspectre.freedesktop.org/wiki/>
A PostScript rendering library
Support for PS files in okular.
I suppose this is the cause:
------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- libspectre. freedesktop. org/wiki/>
-- The following OPTIONAL packages could NOT be located on your system.
-- Consider installing them to enable more features from this software.
-------
* libspectre (0.2 or higher) <http://
A PostScript rendering library
Support for PS files in okular.
but I have libspectre-dev package installed...