anchor.diff:  vars.LUADIR = S"$FULL_PREFIX\\lua"
   vars.INCDIR = S"$FULL_PREFIX\\include"
   vars.LUA_SHORTV = vars.LUA_VERSION:gsub("%.", "")
  -vars.SYSCONFFILENAME = S"config-$LUA_VERSION.lua"
   
   if INSTALL_LUA then
   	if vars.LUA_VERSION ~= "5.1" then
  
positive.code: end
  f:write(S[=[
  site_config.LUAROCKS_UNAME_M=[[$UNAME_M]]
  site_config.LUAROCKS_SYSCONFIG=[[$SYSCONFDIR\$SYSCONFFILENAME]]
  site_config.LUAROCKS_ROCKS_TREE=[[$TREE_ROOT]]
  site_config.LUAROCKS_PREFIX=[[$PREFIX]]
  site_config.LUAROCKS_DOWNLOADER=[[wget]]
  
negative.code: 		die(S"lua.h not found in $LUA_INCDIR")
  	end
  
  	for _, e in ipairs{ 
          S([[\include\lua\$LUA_VERSION]]), 
          S([[\include\lua$LUA_SHORTV]]), 
          S([[\include\lua$LUA_VERSION]]), 
          S([[\include\$LUA_VERSION]]), 
          [[\include\]],
          [[\]], 
        } do
  		print("    checking for "..directory..e.."\\lua.h")
  		if exists(directory..e.."\\lua.h") then
  			vars.LUA_INCDIR = directory..e
  