.latexmkrc

# vim: ft=perl

use File::Which qw/ which /;
use Data::Dumper;

$pdf_mode = 1; # use pdflatex
$pdflatex = "pdflatex -file-line-error -halt-on-error";

&find_pdf_previewer(\$pdf_previewer);

sub find_pdf_previewer {
    my $result = shift;
    my $os = `uname`;

    if( $os =~ /linux/i ){
        print "is linux\n";
        my @previewers = qw/ evince /;
        for(@previewers){
            $found = which $_;
            if($found){
                $$result = $found;
                return;
            }
        }
    }

}