opencv3.3.0 with TBB, libtbb-dev installed, but build fails

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After my 5th attempt and unable to progress any further, I now call on you all. I'm on Ubuntu 16.04, trying to build opencv3.3.0 with its corresponding contrib modules; libtbb-dev is installed (apt-get install confirms it's already the latest version), the .so libraries are here:

/usr/lib/x86_64-linux-gnu/libtbb.so
/usr/lib/x86_64-linux-gnu/libtbbmalloc_proxy.so
/usr/lib/x86_64-linux-gnu/libtbb.so.2
/usr/lib/x86_64-linux-gnu/libtbbmalloc_proxy.so.2
/usr/lib/x86_64-linux-gnu/libtbbmalloc.so.2
/usr/lib/x86_64-linux-gnu/libtbbmalloc.so

In my cmake I did specify -DWITH_TBB=ON, but got the following error at the [83%] mark:

No rule to make target '/usr/lib/libtbb.so', needed by 'lib/libopencv_sfm.so.3.3.0'.

I then specified a path to the libtbb libraries as follows:

-DTBB_LIB_DIR=/usr/lib/x86_64-linux-gnu

But still to no avail. I've got the same error:

No rule to make target '/usr/lib/libtbb.so', needed by 'lib/libopencv_sfm.so.3.3.0'.

I have also check the interactive cmake (ccmake), and it does show:

TBB_ENV_LIB /usr/lib/x86_64-linux-gnu/libtbb.so

So why, when libtbb is present, when I do give its path and cmake confirms it sees it, the build is looking for a misplaced libtbb.so and fails?