simple way for a shadows only light cycles

Ideally I’m looking to use a sun lamp (hard line shadows) to create shadows on my ground plan on a stylized (cartoonish) render I’m working on. In BI I’d just click the only shadows button but that is not available in cycles, is there a simple way to accomplish this same goal?

So you want the shadows just not the extra brightness the sun would cause? If you are doing a stylized render what do you need cycles for? Can you not just do it in BI? I agree BI is easier to do this. If you have to use cycles you could always composite in the shadows. Though I don’t know if that fits your “easy” criterion.

http://bbs.blendercn.org/data/attachment/forum/201401/08/10032411ggolug1e1sgl6r.jpg

Thanks guys, I’ll try both of those ideas, using BI -its been a while so I hadn’t even considered it and doing the shadow pass in the compositor like Newawa suggested and see which image I like better.

Appreciate the suggestions