-if(WIN32 AND NOT PYTHON_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 ${Python_ADDITIONAL_VERSIONS} 2.7 "${MIN_VER_PYTHON}")
- 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 2.7)
-if(NOT PYTHONINTERP_FOUND)
-find_host_package(PythonInterp "${MIN_VER_PYTHON}")
-endif()
+# Find specified Python version
+# Arguments:
+# preferred_version (value): Version to check for first
+# min_version (value): Minimum supported version
+# library_env (value): Name of Python library ENV variable to check
+# include_dir_env (value): Name of Python include directory ENV variable to check
+# found (variable): Set if interpreter found
+# executable (variable): Output of executable found
+# version_string (variable): Output of found version
+# version_major (variable): Output of found major version
+# version_minor (variable): Output of found minor version
+# libs_found (variable): Set if libs found
+# libs_version_string (variable): Output of found libs version
+# libraries (variable): Output of found Python libraries
+# library (variable): Output of found Python library
+# debug_libraries (variable): Output of found Python debug libraries
+# debug_library (variable): Output of found Python debug library
+# include_path (variable): Output of found Python include path
+# include_dir (variable): Output of found Python include dir
+# include_dir2 (variable): Output of found Python include dir2
+# packages_path (variable): Output of found Python packages path
+# numpy_include_dirs (variable): Output of found Python Numpy include dirs
+# numpy_version (variable): Output of found Python Numpy version
+function(find_python preferred_version min_version library_env include_dir_env
+ found executable version_string version_major version_minor
+ libs_found libs_version_string libraries library debug_libraries
+ debug_library include_path include_dir include_dir2 packages_path
+ numpy_include_dirs numpy_version)
-unset(HAVE_SPHINX CACHE)
+ ocv_check_environment_variables(${executable})
+ if(${executable})
+ set(PYTHON_EXECUTABLE "${${executable}}")
+ endif()
-if(PYTHONINTERP_FOUND)
- set(PYTHON_VERSION_MAJOR_MINOR "${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}")
+ 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}" "${min_version}")
+ find_host_program(executable
+ NAMES python${_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()
- if(NOT ANDROID AND NOT IOS)
- ocv_check_environment_variables(PYTHON_LIBRARY PYTHON_INCLUDE_DIR)
- find_host_package(PythonLibs "${PYTHON_VERSION_STRING}" EXACT)
+ find_host_package(PythonInterp "${preferred_version}")
+ if(NOT PYTHONINTERP_FOUND)
+ find_host_package(PythonInterp "${min_version}")
endif()
- if(NOT ANDROID AND NOT IOS)
- if(CMAKE_HOST_UNIX)
- execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "from distutils.sysconfig import *; print(get_python_lib())"
- RESULT_VARIABLE PYTHON_CVPY_PROCESS
- OUTPUT_VARIABLE PYTHON_STD_PACKAGES_PATH
- OUTPUT_STRIP_TRAILING_WHITESPACE)
- if("${PYTHON_STD_PACKAGES_PATH}" MATCHES "site-packages")
- set(_PYTHON_PACKAGES_PATH "python${PYTHON_VERSION_MAJOR_MINOR}/site-packages")
- else() #debian based assumed, install to the dist-packages.
- set(_PYTHON_PACKAGES_PATH "python${PYTHON_VERSION_MAJOR_MINOR}/dist-packages")
+ 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} ${include_dir_env})
+ if(${library})
+ set(PYTHON_LIBRARY "${${library_env}}")
endif()
- if(EXISTS "${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}/${PYTHON_PACKAGES_PATH}")
- set(_PYTHON_PACKAGES_PATH "lib${LIB_SUFFIX}/${_PYTHON_PACKAGES_PATH}")
- else()
- set(_PYTHON_PACKAGES_PATH "lib/${_PYTHON_PACKAGES_PATH}")
+ if(${include_dir})
+ set(PYTHON_INCLUDE_DIR "${${include_dir_env}}")
endif()
- elseif(CMAKE_HOST_WIN32)
- get_filename_component(PYTHON_PATH "${PYTHON_EXECUTABLE}" PATH)
- file(TO_CMAKE_PATH "${PYTHON_PATH}" PYTHON_PATH)
- if(NOT EXISTS "${PYTHON_PATH}/Lib/site-packages")
- unset(PYTHON_PATH)
- get_filename_component(PYTHON_PATH "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${PYTHON_VERSION_MAJOR_MINOR}\\InstallPath]" ABSOLUTE)
- if(NOT PYTHON_PATH)
- get_filename_component(PYTHON_PATH "[HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${PYTHON_VERSION_MAJOR_MINOR}\\InstallPath]" ABSOLUTE)
- endif()
- file(TO_CMAKE_PATH "${PYTHON_PATH}" PYTHON_PATH)
+
+ # not using _version_string here, because it might not conform to the CMake version format
+ find_host_package(PythonLibs "${_version_major_minor}.${_version_patch}" EXACT)
+
+ 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 ${PYTHON_INCLUDE_DIR2})
+
+ # Clear find_host_package side effects
+ unset(PYTHONLIBS_FOUND)
+ unset(PYTHON_LIBRARIES)
+ unset(PYTHON_INCLUDE_PATH)
+ unset(PYTHON_INCLUDE_DIRS)
+ unset(PYTHON_DEBUG_LIBRARIES)
+ unset(PYTHONLIBS_VERSION_STRING)
+ unset(PYTHON_DEBUG_LIBRARY CACHE)
+ unset(PYTHON_LIBRARY)
+ unset(PYTHON_LIBRARY_DEBUG)
+ unset(PYTHON_LIBRARY_RELEASE)
+ unset(PYTHON_LIBRARY CACHE)
+ unset(PYTHON_LIBRARY_DEBUG CACHE)
+ unset(PYTHON_LIBRARY_RELEASE CACHE)
+ unset(PYTHON_INCLUDE_DIR CACHE)
+ unset(PYTHON_INCLUDE_DIR2 CACHE)
endif()
- set(_PYTHON_PACKAGES_PATH "${PYTHON_PATH}/Lib/site-packages")
endif()
- SET(PYTHON_PACKAGES_PATH "${_PYTHON_PACKAGES_PATH}" CACHE PATH "Where to install the python packages.")
-
- if(NOT PYTHON_NUMPY_INCLUDE_DIRS)
- # Attempt to discover the NumPy include directory. If this succeeds, then build python API with NumPy
- execute_process(COMMAND "${PYTHON_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 PYTHON_NUMPY_PROCESS
- OUTPUT_VARIABLE PYTHON_NUMPY_INCLUDE_DIRS
- OUTPUT_STRIP_TRAILING_WHITESPACE)
- if(PYTHON_NUMPY_PROCESS EQUAL 0)
- file(TO_CMAKE_PATH "${PYTHON_NUMPY_INCLUDE_DIRS}" _PYTHON_NUMPY_INCLUDE_DIRS)
- set(PYTHON_NUMPY_INCLUDE_DIRS "${_PYTHON_NUMPY_INCLUDE_DIRS}" CACHE PATH "Path to numpy headers")
+ 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()
- endif()
- if(PYTHON_NUMPY_INCLUDE_DIRS)
- execute_process(COMMAND "${PYTHON_EXECUTABLE}" -c "import numpy; print(numpy.version.version)"
- OUTPUT_VARIABLE PYTHON_NUMPY_VERSION
- OUTPUT_STRIP_TRAILING_WHITESPACE)
- endif()
- endif(NOT ANDROID AND NOT IOS)
+ 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 "${MIN_VER_PYTHON3}" PYTHON3_LIBRARY PYTHON3_INCLUDE_DIR
+ PYTHON3INTERP_FOUND PYTHON3_EXECUTABLE PYTHON3_VERSION_STRING
+ PYTHON3_VERSION_MAJOR PYTHON3_VERSION_MINOR PYTHON3LIBS_FOUND
+ PYTHON3LIBS_VERSION_STRING PYTHON3_LIBRARIES PYTHON3_LIBRARY
+ PYTHON3_DEBUG_LIBRARIES PYTHON3_LIBRARY_DEBUG PYTHON3_INCLUDE_PATH
+ PYTHON3_INCLUDE_DIR PYTHON3_INCLUDE_DIR2 PYTHON3_PACKAGES_PATH
+ PYTHON3_NUMPY_INCLUDE_DIRS PYTHON3_NUMPY_VERSION)
+
+# Use Python 2 as default Python interpreter
+if(PYTHON2LIBS_FOUND)
+ set(PYTHON_DEFAULT_AVAILABLE "TRUE")
+ set(PYTHON_DEFAULT_EXECUTABLE "${PYTHON2_EXECUTABLE}")
endif()
+unset(HAVE_SPHINX CACHE)
+
if(BUILD_DOCS)
find_host_program(SPHINX_BUILD sphinx-build)
find_host_program(PLANTUML plantuml)