You only need to add sdb_vendor in your *.wb to generate the file

{...
hdl_entity = "wb_clk_counters";
sdb_vendor  = 0x7501;
sdb_version = 1;
...
}

Then you can generate with the new example/Makefile by calling:

	make pts

or

	wbgen2 --vo=wb_clk_counters.vhdl --vpo=wb_clk_counters_pkg.vhdl
--hstyle=record wb_clk_counters.wb

IMPORTANT: This new option requires lua-md5 library

	sudo apt-get install lua-md5