.. include:: ../images.rst


CFITSIO installation
~~~~~~~~~~~~~~~~~~~~~~~~

whatis : CFITSIO is a library for reading and writing data files in FITS (Flexible Image Transport System) data format

source : NASA site:
`http://heasarc.gsfc.nasa.gov/docs/software/fitsio/fitsio.html <http://heasarc.gsfc.nasa.gov/docs/software/fitsio/fitsio.html>`__

.. note::
   For the recommended **CMake** build (see :doc:`cwb`), the easiest way to
   get CFITSIO is via conda-forge, matching the version required by your
   ``healpix_cxx`` package (see :doc:`healpix` and the
   `library README <https://gitlab.com/gwburst/public/library/-/blob/public/README.md>`__):

   .. code-block:: bash

       conda install -c conda-forge cfitsio

For the **traditional Makefile** build, CFITSIO is instead built from
source, as described below.

Download cfitsio-3.45

.. code-block:: bash

    wget ftp://heasarc.gsfc.nasa.gov/software/fitsio/c/cfitsio3450.tar.gz

Installation :

.. code-block:: bash

    gunzip cfitsio3450.tar.gz
    tar xvf cfitsio3450.tar
    mv cfitsio cfitsio-3.45
    cd cfitsio-3.45
    ./configure CFLAGS=-O
    make shared


.. note::
   set HOME_CFITSIO environment variable in watenv script.