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Original file line number | Diff line number | Diff line change |
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# - Find python interpreter | ||
# This module finds if Python interpreter is installed and determines where the | ||
# executables are. This code sets the following variables: | ||
# | ||
# PYTHONINTERP_FOUND - Was the Python executable found | ||
# PYTHON_EXECUTABLE - path to the Python interpreter | ||
# | ||
# PYTHON_VERSION_STRING - Python version found e.g. 2.5.2 | ||
# PYTHON_VERSION_MAJOR - Python major version found e.g. 2 | ||
# PYTHON_VERSION_MINOR - Python minor version found e.g. 5 | ||
# PYTHON_VERSION_PATCH - Python patch version found e.g. 2 | ||
# | ||
# The Python_ADDITIONAL_VERSIONS variable can be used to specify a list of | ||
# version numbers that should be taken into account when searching for Python. | ||
# You need to set this variable before calling find_package(PythonInterp). | ||
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||
#============================================================================= | ||
# Copyright 2005-2010 Kitware, Inc. | ||
# Copyright 2011 Bjoern Ricks <[email protected]> | ||
# Copyright 2012 Rolf Eike Beer <[email protected]> | ||
# | ||
# Distributed under the OSI-approved BSD License (the "License"); | ||
# see accompanying file Copyright.txt for details. | ||
# | ||
# This software is distributed WITHOUT ANY WARRANTY; without even the | ||
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
# See the License for more information. | ||
#============================================================================= | ||
# (To distribute this file outside of CMake, substitute the full | ||
# License text for the above reference.) | ||
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unset(_Python_NAMES) | ||
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set(_PYTHON1_VERSIONS 1.6 1.5) | ||
set(_PYTHON2_VERSIONS 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0) | ||
set(_PYTHON3_VERSIONS 3.4 3.3 3.2 3.1 3.0) | ||
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||
if(PythonInterp_FIND_VERSION) | ||
if(PythonInterp_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$") | ||
string(REGEX REPLACE "^([0-9]+\\.[0-9]+).*" "\\1" _PYTHON_FIND_MAJ_MIN "${PythonInterp_FIND_VERSION}") | ||
string(REGEX REPLACE "^([0-9]+).*" "\\1" _PYTHON_FIND_MAJ "${_PYTHON_FIND_MAJ_MIN}") | ||
list(APPEND _Python_NAMES python${_PYTHON_FIND_MAJ_MIN} python${_PYTHON_FIND_MAJ}) | ||
unset(_PYTHON_FIND_OTHER_VERSIONS) | ||
if(NOT PythonInterp_FIND_VERSION_EXACT) | ||
foreach(_PYTHON_V ${_PYTHON${_PYTHON_FIND_MAJ}_VERSIONS}) | ||
if(NOT _PYTHON_V VERSION_LESS _PYTHON_FIND_MAJ_MIN) | ||
list(APPEND _PYTHON_FIND_OTHER_VERSIONS ${_PYTHON_V}) | ||
endif() | ||
endforeach() | ||
endif() | ||
unset(_PYTHON_FIND_MAJ_MIN) | ||
unset(_PYTHON_FIND_MAJ) | ||
else() | ||
list(APPEND _Python_NAMES python${PythonInterp_FIND_VERSION}) | ||
set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonInterp_FIND_VERSION}_VERSIONS}) | ||
endif() | ||
else() | ||
set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS}) | ||
endif() | ||
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list(APPEND _Python_NAMES python) | ||
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# Search for the current active python version first | ||
find_program(PYTHON_EXECUTABLE NAMES ${_Python_NAMES}) | ||
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# Set up the versions we know about, in the order we will search. Always add | ||
# the user supplied additional versions to the front. | ||
set(_Python_VERSIONS | ||
${Python_ADDITIONAL_VERSIONS} | ||
${_PYTHON_FIND_OTHER_VERSIONS} | ||
) | ||
|
||
unset(_PYTHON_FIND_OTHER_VERSIONS) | ||
unset(_PYTHON1_VERSIONS) | ||
unset(_PYTHON2_VERSIONS) | ||
unset(_PYTHON3_VERSIONS) | ||
|
||
# Search for newest python version if python executable isn't found | ||
if(NOT PYTHON_EXECUTABLE) | ||
foreach(_CURRENT_VERSION ${_Python_VERSIONS}) | ||
set(_Python_NAMES python${_CURRENT_VERSION}) | ||
if(WIN32) | ||
list(APPEND _Python_NAMES python) | ||
endif() | ||
find_program(PYTHON_EXECUTABLE | ||
NAMES ${_Python_NAMES} | ||
PATHS [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath] | ||
) | ||
endforeach() | ||
endif() | ||
|
||
# determine python version string | ||
if(PYTHON_EXECUTABLE) | ||
execute_process(COMMAND "${PYTHON_EXECUTABLE}" -c | ||
"import sys; sys.stdout.write(';'.join([str(x) for x in sys.version_info[:3]]))" | ||
OUTPUT_VARIABLE _VERSION | ||
RESULT_VARIABLE _PYTHON_VERSION_RESULT | ||
ERROR_QUIET) | ||
if(NOT _PYTHON_VERSION_RESULT) | ||
string(REPLACE ";" "." PYTHON_VERSION_STRING "${_VERSION}") | ||
list(GET _VERSION 0 PYTHON_VERSION_MAJOR) | ||
list(GET _VERSION 1 PYTHON_VERSION_MINOR) | ||
list(GET _VERSION 2 PYTHON_VERSION_PATCH) | ||
if(PYTHON_VERSION_PATCH EQUAL 0) | ||
# it's called "Python 2.7", not "2.7.0" | ||
string(REGEX REPLACE "\\.0$" "" PYTHON_VERSION_STRING "${PYTHON_VERSION_STRING}") | ||
endif() | ||
else() | ||
# sys.version predates sys.version_info, so use that | ||
execute_process(COMMAND "${PYTHON_EXECUTABLE}" -c "import sys; sys.stdout.write(sys.version)" | ||
OUTPUT_VARIABLE _VERSION | ||
RESULT_VARIABLE _PYTHON_VERSION_RESULT | ||
ERROR_QUIET) | ||
if(NOT _PYTHON_VERSION_RESULT) | ||
string(REGEX REPLACE " .*" "" PYTHON_VERSION_STRING "${_VERSION}") | ||
string(REGEX REPLACE "^([0-9]+)\\.[0-9]+.*" "\\1" PYTHON_VERSION_MAJOR "${PYTHON_VERSION_STRING}") | ||
string(REGEX REPLACE "^[0-9]+\\.([0-9])+.*" "\\1" PYTHON_VERSION_MINOR "${PYTHON_VERSION_STRING}") | ||
if(PYTHON_VERSION_STRING MATCHES "^[0-9]+\\.[0-9]+\\.[0-9]+.*") | ||
string(REGEX REPLACE "^[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" PYTHON_VERSION_PATCH "${PYTHON_VERSION_STRING}") | ||
else() | ||
set(PYTHON_VERSION_PATCH "0") | ||
endif() | ||
else() | ||
# sys.version was first documented for Python 1.5, so assume | ||
# this is older. | ||
set(PYTHON_VERSION_STRING "1.4") | ||
set(PYTHON_VERSION_MAJOR "1") | ||
set(PYTHON_VERSION_MAJOR "4") | ||
set(PYTHON_VERSION_MAJOR "0") | ||
endif() | ||
endif() | ||
unset(_PYTHON_VERSION_RESULT) | ||
unset(_VERSION) | ||
endif() | ||
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# handle the QUIETLY and REQUIRED arguments and set PYTHONINTERP_FOUND to TRUE if | ||
# all listed variables are TRUE | ||
include(FindPackageHandleStandardArgs) | ||
FIND_PACKAGE_HANDLE_STANDARD_ARGS(PythonInterp REQUIRED_VARS PYTHON_EXECUTABLE VERSION_VAR PYTHON_VERSION_STRING) | ||
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mark_as_advanced(PYTHON_EXECUTABLE) |
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