Cmake errors in tutorial 0

[straaljager]

When executing the command
cmake -DINSTALL_PREFIX=../install -DTUT_PREFIX=../tutorials ../source

-- The CXX compiler identification is GNU 9.3.0
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Could NOT find Python (missing: Python_EXECUTABLE Python_LIBRARY Python_INCLUDE_DIR Development) (found version "2.7.18")
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE) 
-- Could NOT find Sphinx (missing: SPHINX_EXECUTABLE) 
-- Found SWIG: /usr/bin/swig4.0 (found suitable version "4.0.1", minimum required is "3") 
CMake Error at /usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:146 (message):
  Could NOT find LibXml2 (missing: LIBXML2_LIBRARY LIBXML2_INCLUDE_DIR)
Call Stack (most recent call first):
  /usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:393 (_FPHSA_FAILURE_MESSAGE)
  /usr/share/cmake-3.16/Modules/FindLibXml2.cmake:92 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  CMakeLists.txt:152 (find_package)

-- Configuring incomplete, errors occurred!

[kerimoyle]

• instructions to first instal dependencies (libxml2)
• instructions for bindings dependencies in Python version (SWIG, python)
• check that documentation building is off by default (doxygen, sphinx)

[straaljager]

Solution on fresh Ubuntu 20.04 installation:

sudo apt-get install libxml2-dev
sudo apt-get install python-dev
sudo apt-get install python3-dev
sudo apt-get install python3-sphinx
sudo apt-get install doxygen