176 lines
7.7 KiB
CMake
176 lines
7.7 KiB
CMake
# - Find python interpreter
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# This module finds if Python interpreter is installed and determines where the
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# executables are. This code sets the following variables:
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#
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# PYTHONINTERP_FOUND - Was the Python executable found
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# PYTHON_EXECUTABLE - path to the Python interpreter
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#
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# PYTHON_VERSION_STRING - Python version found e.g. 2.5.2
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# PYTHON_VERSION_MAJOR - Python major version found e.g. 2
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# PYTHON_VERSION_MINOR - Python minor version found e.g. 5
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# PYTHON_VERSION_PATCH - Python patch version found e.g. 2
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#
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# The Python_ADDITIONAL_VERSIONS variable can be used to specify a list of
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# version numbers that should be taken into account when searching for Python.
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# You need to set this variable before calling find_package(PythonInterp).
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#
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# You can point to a preferred python install to use by setting the following
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# to the point at the root directory of the python install:
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#
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# PYTHON_ROOT_DIR - The root directory of the python install
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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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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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unset(_Python_NAMES)
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set(_PYTHON1_VERSIONS 1.6 1.5)
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set(_PYTHON2_VERSIONS 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0)
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set(_PYTHON3_VERSIONS 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0)
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if(PythonInterp_FIND_VERSION)
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if(PythonInterp_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
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string(REGEX REPLACE "^([0-9]+\\.[0-9]+).*" "\\1" _PYTHON_FIND_MAJ_MIN "${PythonInterp_FIND_VERSION}")
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string(REGEX REPLACE "^([0-9]+).*" "\\1" _PYTHON_FIND_MAJ "${_PYTHON_FIND_MAJ_MIN}")
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list(APPEND _Python_NAMES python${_PYTHON_FIND_MAJ_MIN} python${_PYTHON_FIND_MAJ})
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unset(_PYTHON_FIND_OTHER_VERSIONS)
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if(NOT PythonInterp_FIND_VERSION_EXACT)
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foreach(_PYTHON_V ${_PYTHON${_PYTHON_FIND_MAJ}_VERSIONS})
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if(NOT _PYTHON_V VERSION_LESS _PYTHON_FIND_MAJ_MIN)
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list(APPEND _PYTHON_FIND_OTHER_VERSIONS ${_PYTHON_V})
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endif()
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endforeach()
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endif()
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unset(_PYTHON_FIND_MAJ_MIN)
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unset(_PYTHON_FIND_MAJ)
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else()
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list(APPEND _Python_NAMES python${PythonInterp_FIND_VERSION})
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set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonInterp_FIND_VERSION}_VERSIONS})
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endif()
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else()
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set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS})
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endif()
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list(APPEND _Python_NAMES python)
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# Search for the preferred executable first
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if( ${PYTHON_ROOT_DIR} )
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# Search for any of the executable names solely in the directory we've
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# been pointed to. Failure to find the python executable here is a fatal
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# fail.
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find_program(PYTHON_EXECUTABLE NAMES ${_Python_NAMES}
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PATHS ${PYTHON_ROOT_DIR}
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NO_DEFAULT_PATH )
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else()
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# If there is no specific path given, look for python in the path
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find_program(PYTHON_EXECUTABLE NAMES ${_Python_NAMES})
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endif()
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# Set up the versions we know about, in the order we will search. Always add
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# the user supplied additional versions to the front.
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set(_Python_VERSIONS
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${Python_ADDITIONAL_VERSIONS}
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${_PYTHON_FIND_OTHER_VERSIONS}
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)
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unset(_PYTHON_FIND_OTHER_VERSIONS)
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unset(_PYTHON1_VERSIONS)
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unset(_PYTHON2_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 PYTHON_EXECUTABLE)
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# If using the MINGW compiler, we mustn't find the standard python
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# distribution because of multiple C-Runtime errors. We must instead
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# use the Python-a-mingw-us distribution
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if(MINGW)
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list( APPEND _Python_PPATHS ${PYTHON_ROOT_DIR} )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.9" )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.8" )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.7" )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.6" )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.5" )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.4" )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.3" )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.2" )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.1" )
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list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.0" )
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else()
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list( APPEND _Python_PPATHS [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath] )
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endif()
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foreach(_CURRENT_VERSION ${_Python_VERSIONS})
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set(_Python_NAMES python${_CURRENT_VERSION})
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if(WIN32)
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list(APPEND _Python_NAMES python)
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endif()
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find_program(PYTHON_EXECUTABLE
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NAMES ${_Python_NAMES}
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PATHS ${_Python_PPATHS}
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)
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endforeach()
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endif()
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# determine python version string
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if(PYTHON_EXECUTABLE)
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execute_process(COMMAND "${PYTHON_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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RESULT_VARIABLE _PYTHON_VERSION_RESULT
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ERROR_QUIET)
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if(NOT _PYTHON_VERSION_RESULT)
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string(REPLACE ";" "." PYTHON_VERSION_STRING "${_VERSION}")
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list(GET _VERSION 0 PYTHON_VERSION_MAJOR)
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list(GET _VERSION 1 PYTHON_VERSION_MINOR)
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list(GET _VERSION 2 PYTHON_VERSION_PATCH)
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if(PYTHON_VERSION_PATCH EQUAL 0)
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# it's called "Python 2.7", not "2.7.0"
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string(REGEX REPLACE "\\.0$" "" PYTHON_VERSION_STRING "${PYTHON_VERSION_STRING}")
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endif()
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else()
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# sys.version predates sys.version_info, so use that
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execute_process(COMMAND "${PYTHON_EXECUTABLE}" -c "import sys; sys.stdout.write(sys.version)"
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OUTPUT_VARIABLE _VERSION
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RESULT_VARIABLE _PYTHON_VERSION_RESULT
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ERROR_QUIET)
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if(NOT _PYTHON_VERSION_RESULT)
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string(REGEX REPLACE " .*" "" PYTHON_VERSION_STRING "${_VERSION}")
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string(REGEX REPLACE "^([0-9]+)\\.[0-9]+.*" "\\1" PYTHON_VERSION_MAJOR "${PYTHON_VERSION_STRING}")
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string(REGEX REPLACE "^[0-9]+\\.([0-9])+.*" "\\1" PYTHON_VERSION_MINOR "${PYTHON_VERSION_STRING}")
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if(PYTHON_VERSION_STRING MATCHES "^[0-9]+\\.[0-9]+\\.[0-9]+.*")
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string(REGEX REPLACE "^[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" PYTHON_VERSION_PATCH "${PYTHON_VERSION_STRING}")
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else()
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set(PYTHON_VERSION_PATCH "0")
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endif()
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else()
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# sys.version was first documented for Python 1.5, so assume
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# this is older.
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set(PYTHON_VERSION_STRING "1.4")
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set(PYTHON_VERSION_MAJOR "1")
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set(PYTHON_VERSION_MAJOR "4")
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set(PYTHON_VERSION_MAJOR "0")
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endif()
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endif()
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unset(_PYTHON_VERSION_RESULT)
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unset(_VERSION)
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endif()
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# handle the QUIETLY and REQUIRED arguments and set PYTHONINTERP_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(PythonInterp REQUIRED_VARS PYTHON_EXECUTABLE VERSION_VAR PYTHON_VERSION_STRING)
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mark_as_advanced(PYTHON_EXECUTABLE)
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