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##############################################################################
# @file FindSphinx.cmake
# @brief Find Sphinx documentation build tools.
#
# @par Input variables:
#
#
# @tp @b Sphinx_DIR @endtp
# Installation directory of Sphinx tools. Can also be set as environment variable. |
#
#
# @tp @b SPHINX_DIR @endtp
# Alternative environment variable for @c Sphinx_DIR. |
#
#
# @tp @b Sphinx_FIND_COMPONENTS @endtp
# Sphinx build tools to look for, i.e., 'apidoc' and/or 'build'. |
#
#
#
# @par Output variables:
#
#
# @tp @b Sphinx_FOUND @endtp
# Whether all or only the requested Sphinx build tools were found. |
#
#
# @tp @b SPHINX_FOUND @endtp
# Alias for @c Sphinx_FOUND. |
# |
#
# @tp @b SPHINX_EXECUTABLE @endtp
# Non-cached alias for @c Sphinx-build_EXECUTABLE. |
#
#
# @tp @b Sphinx_PYTHON_EXECUTABLE @endtp
# Python executable used to run sphinx-build. This is either the
# by default found Python interpreter or a specific version as
# specified by the shebang (#!) of the sphinx-build script. |
#
#
# @tp @b Sphinx_PYTHON_OPTIONS @endtp
# A list of Python options extracted from the shebang (#!) of the
# sphinx-build script. The -E option is added by this module
# if the Python executable is not the system default to avoid
# problems with a differing setting of the @c PYTHONHOME. |
#
#
# @tp @b Sphinx-build_EXECUTABLE @endtp
# Absolute path of the found sphinx-build tool. |
#
#
# @tp @b Sphinx-apidoc_EXECUTABLE @endtp
# Absolute path of the found sphinx-apidoc tool. |
#
#
# @tp @b Sphinx_VERSION_STRING @endtp
# Sphinx version found e.g. 1.1.2. |
#
#
# @tp @b Sphinx_VERSION_MAJOR @endtp
# Sphinx major version found e.g. 1. |
#
#
# @tp @b Sphinx_VERSION_MINOR @endtp
# Sphinx minor version found e.g. 1. |
#
#
# @tp @b Sphinx_VERSION_PATCH @endtp
# Sphinx patch version found e.g. 2. |
#
#
#
# @ingroup CMakeFindModules
##############################################################################
set (_Sphinx_REQUIRED_VARS)
# ----------------------------------------------------------------------------
# initialize search
if (NOT Sphinx_DIR)
if (NOT $ENV{Sphinx_DIR} STREQUAL "")
set (Sphinx_DIR "$ENV{Sphinx_DIR}" CACHE PATH "Installation prefix of Sphinx (docutils)." FORCE)
else ()
set (Sphinx_DIR "$ENV{SPHINX_DIR}" CACHE PATH "Installation prefix of Sphinx (docutils)." FORCE)
endif ()
endif ()
# ----------------------------------------------------------------------------
# default components to look for
if (NOT Sphinx_FIND_COMPONENTS)
set (Sphinx_FIND_COMPONENTS "build")
elseif (NOT Sphinx_FIND_COMPONENTS MATCHES "^(build|apidoc)$")
message (FATAL_ERROR "Invalid Sphinx component in: ${Sphinx_FIND_COMPONENTS}")
endif ()
# ----------------------------------------------------------------------------
# find components, i.e., build tools
foreach (_Sphinx_TOOL IN LISTS Sphinx_FIND_COMPONENTS)
if (Sphinx_DIR)
find_program (
Sphinx-${_Sphinx_TOOL}_EXECUTABLE
NAMES sphinx-${_Sphinx_TOOL} sphinx-${_Sphinx_TOOL}.py
HINTS "${Sphinx_DIR}"
PATH_SUFFIXES bin
DOC "The sphinx-${_Sphinx_TOOL} Python script."
NO_DEFAULT_PATH
)
else ()
find_program (
Sphinx-${_Sphinx_TOOL}_EXECUTABLE
NAMES sphinx-${_Sphinx_TOOL} sphinx-${_Sphinx_TOOL}.py
DOC "The sphinx-${_Sphinx_TOOL} Python script."
)
endif ()
mark_as_advanced (Sphinx-${_Sphinx_TOOL}_EXECUTABLE)
list (APPEND _Sphinx_REQUIRED_VARS Sphinx-${_Sphinx_TOOL}_EXECUTABLE)
endforeach ()
# ----------------------------------------------------------------------------
# determine Python executable used by Sphinx
if (Sphinx-build_EXECUTABLE)
# extract python executable from shebang of sphinx-build
find_package (PythonInterp QUIET)
set (Sphinx_PYTHON_EXECUTABLE "${PYTHON_EXECUTABLE}")
set (Sphinx_PYTHON_OPTIONS)
file (STRINGS "${Sphinx-build_EXECUTABLE}" FIRST_LINE LIMIT_COUNT 1)
if (FIRST_LINE MATCHES "^#!(.*/python.*)") # does not match "#!/usr/bin/env python" !
string (REGEX REPLACE "^ +| +$" "" Sphinx_PYTHON_EXECUTABLE "${CMAKE_MATCH_1}")
if (Sphinx_PYTHON_EXECUTABLE MATCHES "([^ ]+) (.*)")
set (Sphinx_PYTHON_EXECUTABLE "${CMAKE_MATCH_1}")
string (REGEX REPLACE " +" ";" Sphinx_PYTHON_OPTIONS "${CMAKE_MATCH_2}")
endif ()
endif ()
# this is done to avoid problems with multiple Python versions being installed
# remember: CMake command if(STR EQUAL STR) is bad and may cause many troubles !
string (REGEX REPLACE "([.+*?^$])" "\\\\\\1" _Sphinx_PYTHON_EXECUTABLE_RE "${PYTHON_EXECUTABLE}")
list (FIND Sphinx_PYTHON_OPTIONS -E IDX)
if (IDX EQUAL -1 AND NOT Sphinx_PYTHON_EXECUTABLE MATCHES "^${_Sphinx_PYTHON_EXECUTABLE_RE}$")
list (INSERT Sphinx_PYTHON_OPTIONS 0 -E)
endif ()
unset (_Sphinx_PYTHON_EXECUTABLE_RE)
endif ()
# ----------------------------------------------------------------------------
# determine Sphinx version
# some quick experiments by @ploxiln
# - sphinx 1.7 and later have the version output format like "sphinx-build 1.7.2"
# - sphinx 1.2 through 1.6 have the version output format like "Sphinx (sphinx-build) 1.2.2"
# - sphinx 1.1 and before do not have a "--version" flag, but it causes the help output like "-h" does which includes version like "Sphinx v1.0.2"
if (Sphinx-build_EXECUTABLE)
# intentionally use invalid -h option here as the help that is shown then
# will include the Sphinx version information
if (Sphinx_PYTHON_EXECUTABLE)
execute_process (
COMMAND "${Sphinx_PYTHON_EXECUTABLE}" ${Sphinx_PYTHON_OPTIONS} "${Sphinx-build_EXECUTABLE}" --version
OUTPUT_VARIABLE _Sphinx_VERSION
ERROR_VARIABLE _Sphinx_VERSION
)
elseif (UNIX)
execute_process (
COMMAND "${Sphinx-build_EXECUTABLE}" --version
OUTPUT_VARIABLE _Sphinx_VERSION
ERROR_VARIABLE _Sphinx_VERSION
)
endif ()
# The sphinx version can also contain a "b" instead of the last dot.
# For example "Sphinx v1.2b1" or "Sphinx 1.7.0b2" so we cannot just split on "."
if (_Sphinx_VERSION MATCHES "sphinx-build ([0-9]+\\.[0-9]+(\\.|a?|b?)([0-9]*)(b?)([0-9]*))")
set (Sphinx_VERSION_STRING "${CMAKE_MATCH_1}")
set (_SPHINX_VERSION_FOUND)
elseif (_Sphinx_VERSION MATCHES "Sphinx v([0-9]+\\.[0-9]+(\\.|b?)([0-9]*)(b?)([0-9]*))")
set (Sphinx_VERSION_STRING "${CMAKE_MATCH_1}")
set (_SPHINX_VERSION_FOUND)
elseif (_Sphinx_VERSION MATCHES "Sphinx \\(sphinx-build\\) ([0-9]+\\.[0-9]+(\\.|a?|b?)([0-9]*)(b?)([0-9]*))")
set (Sphinx_VERSION_STRING "${CMAKE_MATCH_1}")
set (_SPHINX_VERSION_FOUND)
endif ()
endif ()
if(_SPHINX_VERSION_FOUND)
string(REGEX REPLACE "([0-9]+)\\.[0-9]+(\\.|b)[0-9]+" "\\1" Sphinx_VERSION_MAJOR ${Sphinx_VERSION_STRING})
string(REGEX REPLACE "[0-9]+\\.([0-9]+)(\\.|b)[0-9]+" "\\1" Sphinx_VERSION_MINOR ${Sphinx_VERSION_STRING})
string(REGEX REPLACE "[0-9]+\\.[0-9]+(\\.|b)([0-9]+)" "\\1" Sphinx_VERSION_PATCH ${Sphinx_VERSION_STRING})
# v1.2.0 -> v1.2
if (Sphinx_VERSION_PATCH EQUAL 0)
string (REGEX REPLACE "\\.0$" "" Sphinx_VERSION_STRING "${Sphinx_VERSION_STRING}")
endif ()
endif ()
# ----------------------------------------------------------------------------
# compatibility with FindPythonInterp.cmake and FindPerl.cmake
set (SPHINX_EXECUTABLE "${Sphinx-build_EXECUTABLE}")
# ----------------------------------------------------------------------------
# handle the QUIETLY and REQUIRED arguments and set SPHINX_FOUND to TRUE if
# all listed variables are TRUE
include (FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS (
Sphinx
REQUIRED_VARS
${_Sphinx_REQUIRED_VARS}
# VERSION_VAR # This isn't available until CMake 2.8.8 so don't use it.
Sphinx_VERSION_STRING
)
# ----------------------------------------------------------------------------
# set Sphinx_DIR
if (NOT Sphinx_DIR AND Sphinx-build_EXECUTABLE)
get_filename_component (Sphinx_DIR "${Sphinx-build_EXECUTABLE}" PATH)
string (REGEX REPLACE "/bin/?" "" Sphinx_DIR "${Sphinx_DIR}")
set (Sphinx_DIR "${Sphinx_DIR}" CACHE PATH "Installation directory of Sphinx tools." FORCE)
endif ()
unset (_Sphinx_VERSION)
unset (_Sphinx_REQUIRED_VARS)