m4/check_sphinx.m4

   1 # check_sphinx.m4 -- check for Sphinx Python package
   2 #
   3 # Copyright (C) 2015 - Philippe Proulx <pproulx@efficios.com>
   4 #
   5 # This file is free software; the Free Software Foundation gives
   6 # unlimited permission to copy and/or distribute it, with or without
   7 # modifications, as long as this notice is preserved.
   8
   9 # Sphinx ships with a script named "sphinx-build", which is usually
  10 # installed in "/usr/bin". Unfortunately, this script uses
  11 # "/usr/bin/python" as its interpreter. Since "/usr/bin/python" can
  12 # be either Python 2 or Python 3, depending on the distribution, and
  13 # since we absolutely need the Python 3 Sphinx package for Babeltrace
  14 # because it needs to import our bindings for autodocumentation,
  15 # there's no way to tell if "sphinx-build" is actually using Python 2
  16 # or Python 3.
  17 #
  18 # This macro checks if the Sphinx package ("sphinx") is installed
  19 # and visible from the interpreter designated by the PYTHON variable.
  20 # It sets PYTHON_SPHINX_EXISTS to "yes" if Sphinx is found for the
  21 # given Python interpreter, otherwise "no".
  22
  23 # AM_CHECK_PYTHON_SPHINX(PYTHON)
  24 # ---------------------------------------------------------------------------
  25 AC_DEFUN([AM_CHECK_PYTHON_SPHINX],
  26     [prog="
  27 try:
  28     import sphinx
  29     print('yes')
  30 except ImportError:
  31     print('no')"
  32     PYTHON_SPHINX_EXISTS=`${$1} -c "$prog"`])