$clean_ext .= " %R-*.ind %R-*.idx %R-*.ilg %R-*.ind"; $makeindex = 'internal splitindex'; sub splitindex { # Use splitindex instead of makeindex. # The splitindex programe starts from an .idx file, makes a set of # other .idx files for separate indexes, and then runs makeindex to # make corresponding .ind files. # However, it is possible that the document uses the splitindex # package, but in a way compatible with the standard methods # compatible with makeindex, i.e., with a single index and with the # use of the \printindex command. # Then we need to invoke makeindex. # In addition, latexmk assumes that makeindex or its replacement makes # an .ind file from an .idx file, and latexmk gives an error if it # doesn't exist, we need to make an .ind file. # Both problems are solved by running makeindex and then splitindex. # Note: errors are returned by makeindex and splitindex for things # like a missing input file. No error is returned for lines in an # input file that are in an incorrect format; they are simply # ignored. So no problem is caused by lines in the .idx file # that are generated by splitindex in a format incompatible with # makeindex. my $ret1 = system( "makeindex", $$Psource ); my $ret2 = system( "splitindex", $$Psource ); return $ret1 || $ret2; }