I can not install dealii, it was downloaded with Git
pablo@pablo-HP-Spectre-13-Ultrabook:~/dealii/build$ cmake -DCMAKE_INSTALL_PREFIX=/home/pablo/dealii /home/pablo/dealii/source -DOPENCASCADE_DIR=/usr/local/include/oce
-- Setting up library
CMake Error at fe/CMakeLists.txt:113 (DEAL_II_ADD_LIBRARY):
Unknown CMake command "DEAL_II_ADD_LIBRARY".
CMake Warning (dev) in CMakeLists.txt:
No cmake_minimum_required command is present. A line of code such as
cmake_minimum_required(VERSION 2.8)
should be added at the top of the file. The version specified may be lower
if you wish to support older CMake versions for this project. For more
information run "cmake --help-policy CMP0000".
This warning is for project developers. Use -Wno-dev to suppress it.
Advanced thanks
Pablo