.latexmkrc.pl

# this is perl code, thats also the latexmk pref file
$pdf_mode = 1 ;

$pdf_previewer  = "open  -a skim   %S --args %O";

# $pdf_update_command = "open -g  -a skim  %S --args %O";



# $pdf_update_method= 4 ; # runs the update command
$pdf_update_method= 0; #  do nothing
# $pdf_update_method= 1 ; # sends signal unix style, not sure if applies to mac, doesn't seem to work 


# $pdf_previewer = "open  -a texshop %S --args %O";
# $pdf_update_command = "open  -g -a texshop %S --args %O"; 


# $pdflatex ="lualatex --output-format=pdf --shell-escape --synctex=1 %O %S";
# $pdflatex ="pdflatex --shell-escape --synctex=1 %O %S";
$pdflatex ="pdflatex   -interaction=nonstopmode --shell-escape --synctex=1 %O %S";

# $pdflatex_silent_switch = " -interaction=batchmode -synctex=1"  ;  
$view = "pdf";
#   $latex_silent_switch   =   "-interaction=batchmode   -c-style-errors";



# lhs automated! its kinda broken
# add_cus_dep( "lhs", "tex", 1, "lhs2tex");
# sub lhs2tex {
#              return  system("lhs2TeX  $_[0].lhs > $_[0].tex");
#           }
 


# adding the support for asymptote rendering
# should test it some time
sub asy {return system("asy '$_[0]'");}
add_cus_dep("asy","eps",0,"asy");
add_cus_dep("asy","pdf",0,"asy");
add_cus_dep("asy","tex",0,"asy");%     

This came up when googling synctex lhs2tex — on the lhs2tex part, http://tex.stackexchange.com/a/143009/1340 might help.