[Cin] shared build fix for my Slackware

[Phyllis Smith]

>
> this is exactly why I asked for your help - my single system may work ok,
> but what about unintended sideeffects?
>
*Andrea building on the latest Arch with no side effects is very
reassuring.*

>
> Thankfully, you found none, so may be Phyllis will give this  patch
> another spin with few more old and new distros, and may be add to git if no
> issues surface.
>
I will give it spin on 32-bit and another older distro and then check it
into GIT if no issues.  Sorry for being so paranoid.
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