cmake/FindSphinx.cmake

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# Author: pablo.speciale@gmail.com (Pablo Speciale)
#

# Find the Sphinx documentation generator
#
# This modules defines
#  SPHINX_EXECUTABLE
#  SPHINX_FOUND

find_program(SPHINX_EXECUTABLE
             NAMES sphinx-build
             PATHS
               /usr/bin
               /usr/local/bin
               /opt/local/bin
             DOC "Sphinx documentation generator")

if (SPHINX_EXECUTABLE)

  find_package(PythonInterp 3)

  if(PYTHONINTERP_FOUND)
    # Check for sphinx theme dependency for documentation
    execute_process(
      COMMAND ${PYTHON_EXECUTABLE} -m pip show sphinx-rtd-theme
      RESULT_VARIABLE SPHINX_RTD_THEME
      OUTPUT_QUIET
      ERROR_QUIET
    )
  endif ()

  if (${SPHINX_RTD_THEME} EQUAL 0)
    set(SPHINX_RTD_THEME TRUE)
  else ()
    set(SPHINX_RTD_THEME FALSE)
  endif ()

endif ()

include(FindPackageHandleStandardArgs)

find_package_handle_standard_args(Sphinx DEFAULT_MSG SPHINX_EXECUTABLE SPHINX_RTD_THEME)

mark_as_advanced(SPHINX_EXECUTABLE)