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149 lines
6.1 KiB
CMake
149 lines
6.1 KiB
CMake
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#.rst:
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# FindPython3Interp
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# ----------------
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#
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# Find python interpreter
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#
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# This module finds if Python interpreter is installed and determines
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# where the executables are. This code sets the following variables:
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#
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# ::
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#
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# PYTHON3INTERP_FOUND - Was the Python executable found
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# PYTHON3_EXECUTABLE - path to the Python interpreter
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#
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#
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#
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# ::
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#
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# PYTHON3_VERSION_STRING - Python version found e.g. 2.5.2
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# PYTHON3_VERSION_MAJOR - Python major version found e.g. 2
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# PYTHON3_VERSION_MINOR - Python minor version found e.g. 5
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# PYTHON3_VERSION_PATCH - Python patch version found e.g. 2
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#
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#
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#
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# The Python3_ADDITIONAL_VERSIONS variable can be used to specify a list
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# of version numbers that should be taken into account when searching
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# for Python. You need to set this variable before calling
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# find_package(Python3Interp).
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#
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# If calling both ``find_package(Python3Interp)`` and
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# ``find_package(Python3Libs)``, call ``find_package(Python3Interp)`` first to
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# get the currently active Python version by default with a consistent version
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# of PYTHON3_LIBRARIES.
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#=============================================================================
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# Copyright 2005-2010 Kitware, Inc.
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# Copyright 2011 Bjoern Ricks <bjoern.ricks@gmail.com>
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# Copyright 2012 Rolf Eike Beer <eike@sf-mail.de>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# * Neither the names of Kitware, Inc., the Insight Software Consortium,
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# nor the names of their contributors may be used to endorse or promote
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# products derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#=============================================================================
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unset(_Python3_NAMES)
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set(_PYTHON3_VERSIONS 3.6 3.5 3.4 3.3 3.2 3.1 3.0)
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if(Python3Interp_FIND_VERSION)
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if(Python3Interp_FIND_VERSION_COUNT GREATER 1)
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set(_PYTHON3_FIND_MAJ_MIN "${Python3Interp_FIND_VERSION_MAJOR}.${Python3Interp_FIND_VERSION_MINOR}")
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list(APPEND _Python3_NAMES
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python${_PYTHON3_FIND_MAJ_MIN}
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python${Python3Interp_FIND_VERSION_MAJOR})
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unset(_PYTHON3_FIND_OTHER_VERSIONS)
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if(NOT Python3Interp_FIND_VERSION_EXACT)
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foreach(_PYTHON3_V ${_PYTHON${Python3Interp_FIND_VERSION_MAJOR}_VERSIONS})
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if(NOT _PYTHON3_V VERSION_LESS _PYTHON3_FIND_MAJ_MIN)
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list(APPEND _PYTHON3_FIND_OTHER_VERSIONS ${_PYTHON3_V})
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endif()
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endforeach()
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endif()
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unset(_PYTHON3_FIND_MAJ_MIN)
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else()
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list(APPEND _Python3_NAMES python${Python3Interp_FIND_VERSION_MAJOR})
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set(_PYTHON3_FIND_OTHER_VERSIONS ${_PYTHON${Python3Interp_FIND_VERSION_MAJOR}_VERSIONS})
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endif()
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else()
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set(_PYTHON3_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS})
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endif()
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find_program(PYTHON3_EXECUTABLE NAMES ${_Python3_NAMES})
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# Set up the versions we know about, in the order we will search. Always add
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# the user supplied additional versions to the front.
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set(_Python3_VERSIONS ${Python3_ADDITIONAL_VERSIONS})
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# If FindPython3Interp has already found the major and minor version,
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# insert that version next to get consistent versions of the interpreter and
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# library.
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if(DEFINED PYTHON3LIBS_VERSION_STRING)
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string(REPLACE "." ";" _PYTHON3LIBS_VERSION "${PYTHON3LIBS_VERSION_STRING}")
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list(GET _PYTHON3LIBS_VERSION 0 _PYTHON3LIBS_VERSION_MAJOR)
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list(GET _PYTHON3LIBS_VERSION 1 _PYTHON3LIBS_VERSION_MINOR)
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list(APPEND _Python3_VERSIONS ${_PYTHON3LIBS_VERSION_MAJOR}.${_PYTHON3LIBS_VERSION_MINOR})
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endif()
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# Search for the current active python version first
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list(APPEND _Python3_VERSIONS ";")
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list(APPEND _Python3_VERSIONS ${_PYTHON3_FIND_OTHER_VERSIONS})
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unset(_PYTHON3_FIND_OTHER_VERSIONS)
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unset(_PYTHON3_VERSIONS)
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# Search for newest python version if python executable isn't found
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if(NOT PYTHON3_EXECUTABLE)
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foreach(_CURRENT_VERSION IN LISTS _Python3_VERSIONS)
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set(_Python3_NAMES python${_CURRENT_VERSION})
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if(WIN32)
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list(APPEND _Python3_NAMES python)
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endif()
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find_program(PYTHON3_EXECUTABLE
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NAMES ${_Python3_NAMES}
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PATHS [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]
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)
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endforeach()
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endif()
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# determine python version string
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if(PYTHON3_EXECUTABLE)
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execute_process(COMMAND "${PYTHON3_EXECUTABLE}" -c
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"import sys; sys.stdout.write(';'.join([str(x) for x in sys.version_info[:3]]))"
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OUTPUT_VARIABLE _VERSION)
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string(REPLACE ";" "." PYTHON3_VERSION_STRING "${_VERSION}")
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list(GET _VERSION 0 PYTHON3_VERSION_MAJOR)
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list(GET _VERSION 1 PYTHON3_VERSION_MINOR)
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list(GET _VERSION 2 PYTHON3_VERSION_PATCH)
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unset(_VERSION)
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endif()
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# handle the QUIETLY and REQUIRED arguments and set PYTHON3INTERP_FOUND to TRUE if
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# all listed variables are TRUE
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include(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(Python3Interp REQUIRED_VARS PYTHON3_EXECUTABLE VERSION_VAR PYTHON3_VERSION_STRING)
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mark_as_advanced(PYTHON3_EXECUTABLE)
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