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86578eccf2
Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
154 lines
6.2 KiB
CMake
154 lines
6.2 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#.rst:
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# FindPythonInterp
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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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# 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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#
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#
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# ::
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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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#
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#
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# The Python_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(PythonInterp).
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#
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# If calling both ``find_package(PythonInterp)`` and
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# ``find_package(PythonLibs)``, call ``find_package(PythonInterp)`` first to
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# get the currently active Python version by default with a consistent version
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# of PYTHON_LIBRARIES.
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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 3.7 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_COUNT GREATER 1)
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set(_PYTHON_FIND_MAJ_MIN "${PythonInterp_FIND_VERSION_MAJOR}.${PythonInterp_FIND_VERSION_MINOR}")
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list(APPEND _Python_NAMES
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python${_PYTHON_FIND_MAJ_MIN}
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python${PythonInterp_FIND_VERSION_MAJOR})
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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 ${_PYTHON${PythonInterp_FIND_VERSION_MAJOR}_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 ${_PYTHON_V})
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endif()
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endforeach()
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endif()
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unset(_PYTHON_FIND_MAJ_MIN)
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else()
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list(APPEND _Python_NAMES python${PythonInterp_FIND_VERSION_MAJOR})
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set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonInterp_FIND_VERSION_MAJOR}_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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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
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# the user supplied additional versions to the front.
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set(_Python_VERSIONS ${Python_ADDITIONAL_VERSIONS})
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# If FindPythonInterp has already found the major and minor version,
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# insert that version next to get consistent versions of the interpreter and
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# library.
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if(DEFINED PYTHONLIBS_VERSION_STRING)
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string(REPLACE "." ";" _PYTHONLIBS_VERSION "${PYTHONLIBS_VERSION_STRING}")
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list(GET _PYTHONLIBS_VERSION 0 _PYTHONLIBS_VERSION_MAJOR)
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list(GET _PYTHONLIBS_VERSION 1 _PYTHONLIBS_VERSION_MINOR)
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list(APPEND _Python_VERSIONS ${_PYTHONLIBS_VERSION_MAJOR}.${_PYTHONLIBS_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 _Python_VERSIONS ";")
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list(APPEND _Python_VERSIONS ${_PYTHON_FIND_OTHER_VERSIONS})
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unset(_PYTHON_FIND_OTHER_VERSIONS)
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unset(_PYTHON1_VERSIONS)
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unset(_PYTHON2_VERSIONS)
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unset(_PYTHON3_VERSIONS)
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# Search for newest python version if python executable isn't found
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if(NOT PYTHON_EXECUTABLE)
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foreach(_CURRENT_VERSION IN LISTS _Python_VERSIONS)
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set(_Python_NAMES python${_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 ${_Python_NAMES}
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PATHS [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_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(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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set(PYTHON_VERSION_PATCH "${CMAKE_MATCH_1}")
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else()
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set(PYTHON_VERSION_PATCH "0")
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endif()
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else()
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# sys.version was first documented for Python 1.5, so assume
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# this is older.
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set(PYTHON_VERSION_STRING "1.4")
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set(PYTHON_VERSION_MAJOR "1")
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set(PYTHON_VERSION_MINOR "4")
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set(PYTHON_VERSION_PATCH "0")
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endif()
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endif()
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unset(_PYTHON_VERSION_RESULT)
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unset(_VERSION)
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endif()
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# handle the QUIETLY and REQUIRED arguments and set PYTHONINTERP_FOUND to TRUE if
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# all listed variables are TRUE
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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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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