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FindPythonInterp.cmake
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FindPythonInterp.cmake
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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).
#
# You can point to a preferred python install to use by setting the following
# to the point at the root directory of the python install:
#
# PYTHON_ROOT_DIR - The root directory of the python install
#=============================================================================
# Copyright 2005-2010 Kitware, Inc.
# Copyright 2011 Bjoern Ricks <bjoern.ricks@gmail.com>
# Copyright 2012 Rolf Eike Beer <eike@sf-mail.de>
#
# 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.)
unset(_Python_NAMES)
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 3.13 3.12 3.11 3.10 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0)
# Disabling the "search every possible place" code for now
# see https://gitlab.com/kicad/code/kicad/-/issues/8553
#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()
list(APPEND _Python_NAMES python3 python)
# Search for the preferred executable first
if( ${PYTHON_ROOT_DIR} )
# Search for any of the executable names solely in the directory we've
# been pointed to. Failure to find the python executable here is a fatal
# fail.
find_program(PYTHON_EXECUTABLE NAMES ${_Python_NAMES}
PATHS ${PYTHON_ROOT_DIR}
NO_DEFAULT_PATH )
elseif(VCPKG_TOOLCHAIN)
# this is a hack for arm64 builds for now
# the main problem being nobody seems to actually cross-compile kicad
# and insteads compiles it painfully on slow hardware
set(INTERP_TRIPLET "${VCPKG_TARGET_TRIPLET}")
if(${VCPKG_TARGET_TRIPLET} STREQUAL "arm64-windows")
set(INTERP_TRIPLET "x64-windows")
endif()
# Our VCPKG usage will always place it in a known location
find_program(PYTHON_EXECUTABLE
NAMES ${_Python_NAMES}
PATHS "${VCPKG_INSTALLED_DIR}/${INTERP_TRIPLET}/tools/python3"
NO_DEFAULT_PATH
NO_PACKAGE_ROOT_PATH
NO_CMAKE_PATH
NO_CMAKE_ENVIRONMENT_PATH
NO_CMAKE_SYSTEM_PATH
NO_SYSTEM_ENVIRONMENT_PATH
)
else()
# If there is no specific path given, look for python in the path
find_program(PYTHON_EXECUTABLE NAMES ${_Python_NAMES})
endif()
# 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)
# If using the MINGW compiler, we mustn't find the standard python
# distribution because of multiple C-Runtime errors. We must instead
# use the Python-a-mingw-us distribution
if(MINGW)
list( APPEND _Python_PPATHS ${PYTHON_ROOT_DIR} )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.9" )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.8" )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.7" )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.6" )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.5" )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.4" )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.3" )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.2" )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.1" )
list( APPEND _Python_PPATHS "C:/python/${_CURRENT_VERSION}.0" )
else()
list( APPEND _Python_PPATHS [HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath] )
endif()
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 ${_Python_PPATHS}
)
endforeach()
endif()
# determine python version string
if(PYTHON_EXECUTABLE)
execute_process(COMMAND "${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()
# 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)
mark_as_advanced(PYTHON_EXECUTABLE)