@@ -12,25 +12,15 @@ migration strategy for Mantid.
Building Against Python 3
#########################
This is currently possible on Ubuntu or Windows.
Please note that reconfiguring an existing Python 2 build is not supported - a build in a fresh build directory is required.
Ubuntu
^^^^^^
Install the latest version of the `mantid-developer` package. Once installed run cmake as standard but with the additional option ``-DPYTHON_EXECUTABLE=/usr/bin/python3``.
This is currently possible on Ubuntu, Windows and macOS. For Ubuntu/macOS ensure dependencies are update to date.
On Windows all of the required packages are in the third-party bundle that will be fetched for you.
.. warning::
Do not install python packages via ``pip``. Install packages only from the system repositories.
Windows
^^^^^^^
All of the required packages are in the third-party bundle that will be fetched for you.
To build from the command line run cmake as standard but with the additional option ``-DWITH_PYTHON3=ON``.
To build from the GUI ensure the previous cache has been deleted, set the source and build directories as usual
To build from the GUI set the source and build directories as usual
but before clicking configure click "Add Entry" and add an entry with the name ``WITH_PYTHON3`` of type ``BOOL``
and ensure the Value is checked. Now proceed to configure and generate as usual.
