how to compile OVM with ncvlog

irun is actually a very convinient wrapper taking care of all the required steps for you. It figures out the required steps, and goes through them one by one, including ncvlog, ncelab, etc.

If you must do this step by step yourself, here's something that can help: Use irun's
   -debugscript <script-file-name>
command line option. This will cause irun to generate a script (with the given name) showing the steps it goes through. You can use that as a refernce to see how -svpp and -ovm are made part of the flow.

       Zeev.

 Hi.

 If you really can't switch to irun, then you will have to take care of the SVPP (SV pre-processor) step until IUS fully supports parameterised classes (not long to wait now). This entails running the "svpp" command on the OVM sources before passing the processed files to ncvlog.

I can't find my 3-step example immediately, so hopefully you can work it out from the svpp help text or someone else might post an example.

One posiblity you might consider is to continue using ncvlog / ncvhdl to compile you DUT, but add a specific "irun -compile" step to just compile the OVM testbench, then continue on to ncelab as per normal:

ncvlog rtl/*.v
irun -compile tb/*.sv -ovm
ncelab work.tb
ncsim work.tb

Or simply replace the ncelab step with irun:
ncvlog rtl/*.v
irun -c tb/*.sv -ovm -snapshot tb
ncsim tb

ZeevK,

 I use $ncroot/tools/urm/bin/svpp to preprocess OVM library individually, then load new library with ncvlog, this issue resolved. Thanks you for your help!