ref: f1fc2168c0075497d39b48b1c88a89c5115ec64d
dir: /doc/requirements.rst/
.. _requirements:
Requirements
============
While aubio can be built without any external dependencies, we **recommend** to
use at least some of the following libraries.
Platform notes
--------------
On all platforms, you will need to have installed:
- a compiler (gcc, clang, msvc, ...)
- python (any version >= 2.7, including 3.x)
- a terminal to run command lines in
Linux
.....
The following `External libraries`_ will be used if found: `libav`_,
`libsamplerate`_, `libsndfile`_, `libfftw3`_.
macOS
.....
The following system frameworks will be used on Mac OS X systems:
- `Accelerate <https://developer.apple.com/reference/accelerate>`_ to compute
FFTs and other vectorized operations optimally.
- `CoreAudio <https://developer.apple.com/reference/coreaudio>`_ and
`AudioToolbox <https://developer.apple.com/reference/audiotoolbox>`_ to
decode audio from files and network streams.
.. note::
To build a fat binary for both ``i386`` and ``x86_64``, use ``./waf configure
--enable-fat``.
The following `External libraries`_ will also be checked: `libav`_,
`libsamplerate`_, `libsndfile`_, `libfftw3`_.
Windows
.......
To use a specific version of the compiler, ``--msvc_version``. To build for a
specific architecture, use ``--msvc_target``. For instance, to build aubio
for ``x86`` using ``msvc 12.0``, use:
.. code:: bash
waf configure --msvc_version='msvc 12.0' --msvc_target='x86'
The following `External libraries`_ will be used if found: `libav`_,
`libsamplerate`_, `libsndfile`_, `libfftw3`_.
iOS
...
The following system frameworks will be used on iOS and iOS Simulator.
- `Accelerate <https://developer.apple.com/reference/accelerate>`_ to compute
FFTs and other vectorized operations optimally.
- `CoreAudio <https://developer.apple.com/reference/coreaudio>`_ and
`AudioToolbox <https://developer.apple.com/reference/audiotoolbox>`_ to
decode audio from files and network streams.
To build aubio for iOS, configure with ``--with-target-platform=ios``. For the
iOS Simulator, use ``--with-target-platform=iosimulator`` instead.
By default, aubio is built with the following flags on iOS:
.. code:: bash
CFLAGS="-fembed-bitcode -arch arm64 -arch armv7 -arch armv7s -miphoneos-version-min=6.1"
and on iOS Simulator:
.. code::
CFLAGS="-arch i386 -arch x86_64 -mios-simulator-version-min=6.1"
Set ``CFLAGS`` and ``LINKFLAGS`` to change these default values, or edit
``wscript`` directly.
Build options
-------------
Some additional options can be passed to the configure step. For the complete
list of options, run:
.. code:: bash
$ ./waf configure --help
Double precision
................
To compile aubio in double precision mode, configure with ``--enable-double``.
To compile aubio in single precision mode, use ``--disable-double`` (default).
Fat binary
..........
To build a fat binary on Mac OS platforms, configure with ``--enable-fat``.
External libraries
------------------
External libraries are checked for using ``pkg-config``. Set the
``PKG_CONFIG_PATH`` environment variable if you have them installed in an
unusual location.
.. note::
If ``pkg-config`` is not found in ``PATH``, the configure step will
succeed, but none of the external libraries will be used.
libav
.....
`libav.org <https://libav.org/>`_, open source audio and video processing
tools.
If all of the following libraries are found, they will be used to compile
``aubio_source_avcodec``. so that ``aubio_source`` will be able to decode audio
from all formats supported by `libav
<https://libav.org/documentation/general.html#Audio-Codecs>`_.
* libavcodec
* libavformat
* libavutil
* libavresample
To enable this option, configure with ``--enable-avcodec``. The build will then
failed if the required libraries are not found. To disable this option,
configure with ``--disable-avcodec``
libsndfile
..........
`libsndfile <http://www.mega-nerd.com/libsndfile/>`_, a C library for reading
and writing sampled sound files.
With libsndfile built in, ``aubio_source_sndfile`` will be built in and used by
``aubio_source``.
To enable this option, configure with ``--enable-sndfile``. The build will then
fail if the required library is not found. To disable this option, configure
with ``--disable-sndfile``
libsamplerate
.............
`libsamplerate <http://www.mega-nerd.com/SRC/>`_, a sample rate converter for
audio.
With libsamplerate built in, ``aubio_source_sndfile`` will support resampling,
and ``aubio_resample`` will be fully functional.
To enable this option, configure with ``--enable-samplerate``. The build will
then fail if the required library is not found. To disable this option,
configure with ``--disable-samplerate``
libfftw3
........
`FFTW <http://fftw.org/>`_, a C subroutine for computing the discrete Fourier
transform
With libfftw3 built in, ``aubio_fft`` will use `FFTW`_ to
compute Fast Fourier Transform (FFT), allowing aubio to compute FFT on length
that are not a power of 2.
To enable this option, configure with ``--enable-fftw3``. The build will
then fail if the required library is not found. To disable this option,
configure with ``--disable-fftw3``
External tools
--------------
If the following tools are found, additional documentations are built:
- `doxygen <http://doxygen.org>`_ to build the :ref:`doxygen-documentation`.
- `txt2man <https://github.com/mvertes/txt2man>`_ to build the :ref:`manpages`
These tools are searched for in the current ``PATH`` environment variable.
By default, the documentation is built only if the tools are found.
To disable the documentation, configure with ``--disable-docs``. To build with
the documentation, configure with ``--enable-docs``.