| # Find specified Python version |
| # Arguments: |
| # preferred_version (value): Version to check for first |
| # min_version (value): Minimum supported version |
| # library_env (value): Name of Python library ENV variable to check |
| # include_dir_env (value): Name of Python include directory ENV variable to check |
| # found (variable): Set if interpreter found |
| # executable (variable): Output of executable found |
| # version_string (variable): Output of found version |
| # version_major (variable): Output of found major version |
| # version_minor (variable): Output of found minor version |
| # libs_found (variable): Set if libs found |
| # libs_version_string (variable): Output of found libs version |
| # libraries (variable): Output of found Python libraries |
| # library (variable): Output of found Python library |
| # debug_libraries (variable): Output of found Python debug libraries |
| # debug_library (variable): Output of found Python debug library |
| # include_path (variable): Output of found Python include path |
| # include_dir (variable): Output of found Python include dir |
| # include_dir2 (variable): Output of found Python include dir2 |
| # packages_path (variable): Output of found Python packages path |
| # numpy_include_dirs (variable): Output of found Python Numpy include dirs |
| # numpy_version (variable): Output of found Python Numpy version |
| function(find_python preferred_version min_version library_env include_dir_env |
| found executable version_string version_major version_minor |
| libs_found libs_version_string libraries library debug_libraries |
| debug_library include_path include_dir include_dir2 packages_path |
| numpy_include_dirs numpy_version) |
| |
| ocv_check_environment_variables(${executable}) |
| if(${executable}) |
| set(PYTHON_EXECUTABLE "${${executable}}") |
| endif() |
| |
| if(WIN32 AND NOT ${executable}) |
| # search for executable with the same bitness as resulting binaries |
| # standard FindPythonInterp always prefers executable from system path |
| # this is really important because we are using the interpreter for numpy search and for choosing the install location |
| foreach(_CURRENT_VERSION ${Python_ADDITIONAL_VERSIONS} "${preferred_version}" "${min_version}") |
| find_host_program(PYTHON_EXECUTABLE |
| NAMES python${_CURRENT_VERSION} python |
| PATHS |
| [HKEY_LOCAL_MACHINE\\\\SOFTWARE\\\\Python\\\\PythonCore\\\\${_CURRENT_VERSION}\\\\InstallPath] |
| [HKEY_CURRENT_USER\\\\SOFTWARE\\\\Python\\\\PythonCore\\\\${_CURRENT_VERSION}\\\\InstallPath] |
| NO_SYSTEM_ENVIRONMENT_PATH |
| ) |
| endforeach() |
| endif() |
| |
| find_host_package(PythonInterp "${preferred_version}") |
| if(NOT PYTHONINTERP_FOUND) |
| find_host_package(PythonInterp "${min_version}") |
| endif() |
| |
| if(PYTHONINTERP_FOUND) |
| # Copy outputs |
| set(_found ${PYTHONINTERP_FOUND}) |
| set(_executable ${PYTHON_EXECUTABLE}) |
| set(_version_string ${PYTHON_VERSION_STRING}) |
| set(_version_major ${PYTHON_VERSION_MAJOR}) |
| set(_version_minor ${PYTHON_VERSION_MINOR}) |
| set(_version_patch ${PYTHON_VERSION_PATCH}) |
| |
| # Clear find_host_package side effects |
| unset(PYTHONINTERP_FOUND) |
| unset(PYTHON_EXECUTABLE CACHE) |
| unset(PYTHON_VERSION_STRING) |
| unset(PYTHON_VERSION_MAJOR) |
| unset(PYTHON_VERSION_MINOR) |
| unset(PYTHON_VERSION_PATCH) |
| endif() |
| |
| if(_found) |
| set(_version_major_minor "${_version_major}.${_version_minor}") |
| |
| if(NOT ANDROID AND NOT IOS) |
| ocv_check_environment_variables(${library_env} ${include_dir_env}) |
| if(NOT ${${library_env}} EQUAL "") |
| set(PYTHON_LIBRARY "${${library_env}}") |
| endif() |
| if(NOT ${${include_dir_env}} EQUAL "") |
| set(PYTHON_INCLUDE_DIR "${${include_dir_env}}") |
| endif() |
| |
| # not using _version_string here, because it might not conform to the CMake version format |
| if(CMAKE_CROSSCOMPILING) |
| # builder version can differ from target, matching base version (e.g. 2.7) |
| find_host_package(PythonLibs "${_version_major_minor}") |
| else() |
| find_host_package(PythonLibs "${_version_major_minor}.${_version_patch}" EXACT) |
| endif() |
| |
| if(PYTHONLIBS_FOUND) |
| # Copy outputs |
| set(_libs_found ${PYTHONLIBS_FOUND}) |
| set(_libraries ${PYTHON_LIBRARIES}) |
| set(_include_path ${PYTHON_INCLUDE_PATH}) |
| set(_include_dirs ${PYTHON_INCLUDE_DIRS}) |
| set(_debug_libraries ${PYTHON_DEBUG_LIBRARIES}) |
| set(_libs_version_string ${PYTHONLIBS_VERSION_STRING}) |
| set(_debug_library ${PYTHON_DEBUG_LIBRARY}) |
| set(_library ${PYTHON_LIBRARY}) |
| set(_library_debug ${PYTHON_LIBRARY_DEBUG}) |
| set(_library_release ${PYTHON_LIBRARY_RELEASE}) |
| set(_include_dir ${PYTHON_INCLUDE_DIR}) |
| set(_include_dir2 ${PYTHON_INCLUDE_DIR2}) |
| |
| # Clear find_host_package side effects |
| unset(PYTHONLIBS_FOUND) |
| unset(PYTHON_LIBRARIES) |
| unset(PYTHON_INCLUDE_PATH) |
| unset(PYTHON_INCLUDE_DIRS) |
| unset(PYTHON_DEBUG_LIBRARIES) |
| unset(PYTHONLIBS_VERSION_STRING) |
| unset(PYTHON_DEBUG_LIBRARY CACHE) |
| unset(PYTHON_LIBRARY) |
| unset(PYTHON_LIBRARY_DEBUG) |
| unset(PYTHON_LIBRARY_RELEASE) |
| unset(PYTHON_LIBRARY CACHE) |
| unset(PYTHON_LIBRARY_DEBUG CACHE) |
| unset(PYTHON_LIBRARY_RELEASE CACHE) |
| unset(PYTHON_INCLUDE_DIR CACHE) |
| unset(PYTHON_INCLUDE_DIR2 CACHE) |
| endif() |
| endif() |
| |
| if(NOT ANDROID AND NOT IOS) |
| if(CMAKE_HOST_UNIX) |
| execute_process(COMMAND ${_executable} -c "from distutils.sysconfig import *; print(get_python_lib())" |
| RESULT_VARIABLE _cvpy_process |
| OUTPUT_VARIABLE _std_packages_path |
| OUTPUT_STRIP_TRAILING_WHITESPACE) |
| if("${_std_packages_path}" MATCHES "site-packages") |
| set(_packages_path "python${_version_major_minor}/site-packages") |
| else() #debian based assumed, install to the dist-packages. |
| set(_packages_path "python${_version_major_minor}/dist-packages") |
| endif() |
| if(EXISTS "${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}/${${packages_path}}") |
| set(_packages_path "lib${LIB_SUFFIX}/${_packages_path}") |
| else() |
| set(_packages_path "lib/${_packages_path}") |
| endif() |
| elseif(CMAKE_HOST_WIN32) |
| get_filename_component(_path "${_executable}" PATH) |
| file(TO_CMAKE_PATH "${_path}" _path) |
| if(NOT EXISTS "${_path}/Lib/site-packages") |
| unset(_path) |
| get_filename_component(_path "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_version_major_minor}\\InstallPath]" ABSOLUTE) |
| if(NOT _path) |
| get_filename_component(_path "[HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_version_major_minor}\\InstallPath]" ABSOLUTE) |
| endif() |
| file(TO_CMAKE_PATH "${_path}" _path) |
| endif() |
| set(_packages_path "${_path}/Lib/site-packages") |
| unset(_path) |
| endif() |
| |
| set(_numpy_include_dirs ${${numpy_include_dirs}}) |
| |
| if(NOT _numpy_include_dirs) |
| if(CMAKE_CROSSCOMPILING) |
| message(STATUS "Cannot probe for Python/Numpy support (because we are cross-compiling OpenCV)") |
| message(STATUS "If you want to enable Python/Numpy support, set the following variables:") |
| message(STATUS " PYTHON2_INCLUDE_PATH") |
| message(STATUS " PYTHON2_LIBRARIES") |
| message(STATUS " PYTHON2_NUMPY_INCLUDE_DIRS") |
| message(STATUS " PYTHON3_INCLUDE_PATH") |
| message(STATUS " PYTHON3_LIBRARIES") |
| message(STATUS " PYTHON3_NUMPY_INCLUDE_DIRS") |
| else() |
| # Attempt to discover the NumPy include directory. If this succeeds, then build python API with NumPy |
| execute_process(COMMAND "${_executable}" -c "import os; os.environ['DISTUTILS_USE_SDK']='1'; import numpy.distutils; print(os.pathsep.join(numpy.distutils.misc_util.get_numpy_include_dirs()))" |
| RESULT_VARIABLE _numpy_process |
| OUTPUT_VARIABLE _numpy_include_dirs |
| OUTPUT_STRIP_TRAILING_WHITESPACE) |
| |
| if(NOT _numpy_process EQUAL 0) |
| unset(_numpy_include_dirs) |
| endif() |
| endif() |
| endif() |
| |
| if(_numpy_include_dirs) |
| file(TO_CMAKE_PATH "${_numpy_include_dirs}" _numpy_include_dirs) |
| if(CMAKE_CROSSCOMPILING) |
| if(NOT _numpy_version) |
| set(_numpy_version "undefined - cannot be probed because of the cross-compilation") |
| endif() |
| else() |
| execute_process(COMMAND "${_executable}" -c "import numpy; print(numpy.version.version)" |
| RESULT_VARIABLE _numpy_process |
| OUTPUT_VARIABLE _numpy_version |
| OUTPUT_STRIP_TRAILING_WHITESPACE) |
| endif() |
| endif() |
| endif(NOT ANDROID AND NOT IOS) |
| endif() |
| |
| # Export return values |
| set(${found} "${_found}" PARENT_SCOPE) |
| set(${executable} "${_executable}" CACHE FILEPATH "Path to Python interpretor") |
| set(${version_string} "${_version_string}" PARENT_SCOPE) |
| set(${version_major} "${_version_major}" PARENT_SCOPE) |
| set(${version_minor} "${_version_minor}" PARENT_SCOPE) |
| set(${libs_found} "${_libs_found}" PARENT_SCOPE) |
| set(${libs_version_string} "${_libs_version_string}" PARENT_SCOPE) |
| set(${libraries} "${_libraries}" PARENT_SCOPE) |
| set(${library} "${_library}" CACHE FILEPATH "Path to Python library") |
| set(${debug_libraries} "${_debug_libraries}" PARENT_SCOPE) |
| set(${debug_library} "${_debug_library}" CACHE FILEPATH "Path to Python debug") |
| set(${include_path} "${_include_path}" PARENT_SCOPE) |
| set(${include_dir} "${_include_dir}" CACHE PATH "Python include dir") |
| set(${include_dir2} "${_include_dir2}" CACHE PATH "Python include dir 2") |
| set(${packages_path} "${_packages_path}" CACHE PATH "Where to install the python packages.") |
| set(${numpy_include_dirs} ${_numpy_include_dirs} CACHE PATH "Path to numpy headers") |
| set(${numpy_version} "${_numpy_version}" PARENT_SCOPE) |
| endfunction(find_python) |
| |
| find_python(2.7 "${MIN_VER_PYTHON2}" PYTHON2_LIBRARY PYTHON2_INCLUDE_DIR |
| PYTHON2INTERP_FOUND PYTHON2_EXECUTABLE PYTHON2_VERSION_STRING |
| PYTHON2_VERSION_MAJOR PYTHON2_VERSION_MINOR PYTHON2LIBS_FOUND |
| PYTHON2LIBS_VERSION_STRING PYTHON2_LIBRARIES PYTHON2_LIBRARY |
| PYTHON2_DEBUG_LIBRARIES PYTHON2_LIBRARY_DEBUG PYTHON2_INCLUDE_PATH |
| PYTHON2_INCLUDE_DIR PYTHON2_INCLUDE_DIR2 PYTHON2_PACKAGES_PATH |
| PYTHON2_NUMPY_INCLUDE_DIRS PYTHON2_NUMPY_VERSION) |
| |
| find_python(3.4 "${MIN_VER_PYTHON3}" PYTHON3_LIBRARY PYTHON3_INCLUDE_DIR |
| PYTHON3INTERP_FOUND PYTHON3_EXECUTABLE PYTHON3_VERSION_STRING |
| PYTHON3_VERSION_MAJOR PYTHON3_VERSION_MINOR PYTHON3LIBS_FOUND |
| PYTHON3LIBS_VERSION_STRING PYTHON3_LIBRARIES PYTHON3_LIBRARY |
| PYTHON3_DEBUG_LIBRARIES PYTHON3_LIBRARY_DEBUG PYTHON3_INCLUDE_PATH |
| PYTHON3_INCLUDE_DIR PYTHON3_INCLUDE_DIR2 PYTHON3_PACKAGES_PATH |
| PYTHON3_NUMPY_INCLUDE_DIRS PYTHON3_NUMPY_VERSION) |
| |
| # Use Python 2 as default Python interpreter |
| if(PYTHON2INTERP_FOUND) |
| set(PYTHON_DEFAULT_AVAILABLE "TRUE") |
| set(PYTHON_DEFAULT_EXECUTABLE "${PYTHON2_EXECUTABLE}") |
| endif() |
