Shrew vpn used to be in the repositories under the name ike, so on 12.04 you could install it very simply with
sudo apt-get install ike; however this is not possible on 12.10, so one solution would be to compile it.
For compilation you will need the stable release code and the necessary dependencies.
sudo apt-get install build-essential libssl-dev libaudio-dev libcups2-dev
Note: this will build the command-line client, but not the gui unless you have the
qt-dev and toolkit files installed (it requires qt 3.3 or above, but has not been tested with qt4; see the readme with the download for further information).
Now, the configuring with
cmake should be fine, and you can specify all the custom options that I see you require when you run it.
This was the successful completion of the configure with the above dependencies installed:
-- Configuring done
-- Generating done
-- Build files have been written to: /home/mike/src/ike
libssl-dev installed I get exactly the error you received:
CMake Error at CMakeLists.txt:196 (message):
Unable to locate openssl crypto include files
You can use install and use
checkinstall to install the compiled program, or you may have other plans.