Docs: linux install example broken - or at least vague ? (Feature #3055)

Unworking / untested example ? Please have someone read this stuff who has never done the install, and you will soon see why many of us get lost so fast !

http://docs.opencv.org/doc/tutorials/introduction/linux_install/linux_install.html#linux-installation

Specifically these lines near bottom of page:

For example

cd ~/opencv
mkdir release
cd release
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local

That last line generates a useless, garbage path. e.g, on two of my machines (Fedora and Ubuntu):

CMake Error: The source directory "/home/opencv/release/CMAKE_INSTALL_PREFIX=/usr/local" does not exist.

Also, going back up the page just a bit, note the lines which read:

Enter the <cmake_binary_dir> and type

cmake [<some optional parameters>] <path to the OpenCV source directory>

I had to read that several times, before I realized it is impossible to understand it - because no where does it say where the OpenCV source directory is, not to mention if those "optional parameters" are used in the following steps, e.g. is "-D CMAKE_BUILD_TYPE=RELEASE" an optional parm, or perhaps "-D CMAKE_INSTALL_PREFIX=/usr/local" is, or maybe just the 'usr/local' part is optional, or maybe those are required and mention is just made of optional items that are not used in this example. Or is -D all part of the OpenCV path, which the error I got seems to indicate. ( Perhaps Give ONE that is fully clear, simple, and working, then later or on another page, give more optional examples. We don't want to read the entire CMake manual to get one sample code working ! )

Another confusing item is the inconsistent <dir variable names>

1. <my_working _directory>
2. <cmake_binary_dir>
3. <path to the OpenCV source directory> hmmm, would that be 2 or some other ?
4. CMAKE_INSTALL_PREFIX=/usr/local <-- is that 3 or some other ?

sudo make install

OK, great, but where did it all end up ? And how can I test that. ( Yes, this does overlap an earlier request I made today, but this is really doc bug, is it not ? :))

thanks so much for all your hard work !

H