194 lines
8.0 KiB
CMake
194 lines
8.0 KiB
CMake
##############################################################################
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# @file FindPythonInterp.cmake
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# @brief Find Python interpreter.
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#
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# @par Input variables:
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# <table border="0">
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# <tr>
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# @tp @b Python_ADDITIONAL_VERSIONS @endtp
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# <td>List of version numbers that should be taken into account when
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# searching for Python.</td>
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# </tr>
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# </table>
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#
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# @par Output variables:
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# <table border="0">
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# <tr>
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# @tp @b PYTHONINTERP_FOUND @endtp
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# <td>Was the Python executable found.</td>
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# </tr>
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# <tr>
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# @tp @b PYTHON_EXECUTABLE @endtp
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# <td>Path to the Python interpreter.</td>
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# </tr>
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# <tr>
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# @tp @b PYTHON_VERSION_STRING @endtp
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# <td>Python version found e.g. 2.5.2.</td>
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# </tr>
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# <tr>
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# @tp @b PYTHON_VERSION_MAJOR @endtp
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# <td>Python major version found e.g. 2.</td>
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# </tr>
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# <tr>
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# @tp @b PYTHON_VERSION_MINOR @endtp
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# <td>Python minor version found e.g. 5.</td>
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# </tr>
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# <tr>
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# @tp @b PYTHON_VERSION_PATCH @endtp
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# <td>Python patch version found e.g. 2.</td>
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# </tr>
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# </table>
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#
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# @note This module has been copied from the Git repository of CMake on
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# 4/12/2012, i.e., before the release of CMake 2.8.8. Once CMake 2.8.8
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# or any version is available for all major platforms, consider to
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# remove this module from the BASIS package.
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#
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# @ingroup CMakeFindModules
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##############################################################################
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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(_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 3.3 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 ${_PYTHON_V})
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endif()
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endforeach()
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endif(NOT PythonInterp_FIND_VERSION_EXACT)
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unset(_PYTHON_FIND_MAJ_MIN)
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unset(_PYTHON_FIND_MAJ)
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else(PythonInterp_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
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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(PythonInterp_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
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else(PythonInterp_FIND_VERSION)
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set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS})
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endif(PythonInterp_FIND_VERSION)
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list(APPEND _Python_NAMES python)
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# Search for the current active python version first
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find_program(PYTHON_EXECUTABLE NAMES ${_Python_NAMES})
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# Set up the versions we know about, in the order we will search. Always add
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# the user supplied additional versions to the front.
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set(_Python_VERSIONS
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${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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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 ${_Python_NAMES}
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PATHS [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_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 "${PYTHON_EXECUTABLE}" -E -c
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"import sys; sys.stdout.write(';'.join([str(x) for x in sys.version_info[:3]]))"
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OUTPUT_VARIABLE _VERSION
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RESULT_VARIABLE _PYTHON_VERSION_RESULT
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ERROR_QUIET)
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if(NOT _PYTHON_VERSION_RESULT)
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string(REPLACE ";" "." PYTHON_VERSION_STRING "${_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 "${PYTHON_EXECUTABLE}" -E -c "import sys; sys.stdout.write(sys.version)"
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OUTPUT_VARIABLE _VERSION
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RESULT_VARIABLE _PYTHON_VERSION_RESULT
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ERROR_QUIET)
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if(NOT _PYTHON_VERSION_RESULT)
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string(REGEX REPLACE " .*" "" PYTHON_VERSION_STRING "${_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_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(PYTHON_EXECUTABLE)
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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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