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dft_tools/doc/install.rst

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.. highlight:: bash
.. _install:
Compiling app4triqs from source
===============================
Prerequisites
-------------
#. The :ref:`TRIQS <triqslibs:welcome>` library, see :ref:`TRIQS installation instruction <triqslibs:installation>`.
In the following, we assume that TRIQS is installed in the directory ``path_to_triqs``.
Installation steps
------------------
#. Download the source code of the latest stable version by cloning the ``TRIQS/app4triqs`` repository from GitHub::
$ git clone https://github.com/TRIQS/app4triqs app4triqs.src
#. Make sure that all additional dependencies are installed on your system and available in your environment.
Alternatively build the dependencies from source instead with::
$ (cd deps && ./download.sh)
In this case they will be installed together with your application.
#. Create and move to a new directory where you will compile the code::
$ mkdir app4triqs.build && cd app4triqs.build
#. Ensure that your shell contains the TRIQS environment variables by sourcing the ``triqsvars.sh`` file from your TRIQS installation::
$ source path_to_triqs/share/triqsvarsh.sh
#. In the build directory call cmake, including any additional custom CMake options, see below::
$ cmake ../app4triqs.src
#. Compile the code, run the tests and install the application::
$ make
$ make test
$ make install
Version compatibility
---------------------
Keep in mind that the version of ``app4triqs`` must be compatible with your TRIQS library version,
see :ref:`TRIQS website <triqslibs:versions>`.
In particular the Major and Minor Version numbers have to be the same.
To use a particular version, go into the directory with the sources, and look at all available versions::
$ cd app4triqs.src && git tag
Checkout the version of the code that you want::
$ git checkout 2.1.0
and follow steps 2 to 4 above to compile the code.
Custom CMake options
--------------------
The compilation of ``app4triqs`` can be configured using CMake-options::
cmake ../app4triqs.src -DOPTION1=value1 -DOPTION2=value2 ... ../app4triqs.src
+-----------------------------------------------------------------+-----------------------------------------------+
| Options | Syntax |
+=================================================================+===============================================+
| Specify an installation path other than path_to_triqs | -DCMAKE_INSTALL_PREFIX=path_to_app4triqs |
+-----------------------------------------------------------------+-----------------------------------------------+
| Build in Debugging Mode | -DCMAKE_BUILD_TYPE=Debug |
+-----------------------------------------------------------------+-----------------------------------------------+
| Disable testing (not recommended) | -DBuild_Tests=OFF |
+-----------------------------------------------------------------+-----------------------------------------------+
| Build the documentation | -DBuild_Documentation=ON |
+-----------------------------------------------------------------+-----------------------------------------------+