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Copy pathOpenCVDetectPython.cmake
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OpenCVDetectPython.cmake
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# 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
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)
if(NOT ${found})
if(${executable})
set(PYTHON_EXECUTABLE "${${executable}}")
endif()
find_package(PythonInterp "${preferred_version}")
if(NOT PYTHONINTERP_FOUND)
find_package(PythonInterp "${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}.${_version_minor}")
if(NOT ANDROID AND NOT APPLE_FRAMEWORK)
# not using _version_string here, because it might not conform to the CMake version format
if(CMAKE_CROSSCOMPILING)
# builder version can differ from target, matching base version (e.g. 2.7)
find_package(PythonLibs "${_version_major_minor}")
else()
find_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_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()
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/${_packages_path}")
endif()
endif()
# Export return values
set(${found} "${_found}" CACHE INTERNAL "")
set(${executable} "${_executable}" CACHE FILEPATH "Path to Python interpretor")
set(${version_string} "${_version_string}" CACHE INTERNAL "")
set(${version_major} "${_version_major}" CACHE INTERNAL "")
set(${version_minor} "${_version_minor}" CACHE INTERNAL "")
set(${libs_found} "${_libs_found}" CACHE INTERNAL "")
set(${libs_version_string} "${_libs_version_string}" CACHE INTERNAL "")
set(${libraries} "${_libraries}" CACHE INTERNAL "Python libraries")
set(${library} "${_library}" CACHE FILEPATH "Path to Python library")
set(${debug_libraries} "${_debug_libraries}" CACHE INTERNAL "")
set(${debug_library} "${_debug_library}" CACHE FILEPATH "Path to Python debug")
set(${include_path} "${_include_path}" CACHE INTERNAL "")
set(${include_dir} "${_include_dir}" CACHE PATH "Python include dir")
set(${include_dir2} "${_include_dir2}" CACHE PATH "Python include dir 2")
set(${packages_path} "${_packages_path}" CACHE PATH "Where to install the python packages.")
endif()
endfunction(find_python)
set(MIN_VER_PYTHON2 2.7)
set(MIN_VER_PYTHON3 3.2)
find_python(2.7 "${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)
find_python(3 "${MIN_VER_PYTHON3}" PYTHON3_LIBRARY PYTHON3_INCLUDE_DIR
PYTHON3INTERP_FOUND PYTHON3_EXECUTABLE PYTHON3_VERSION_STRING
PYTHON3_VERSION_MAJOR PYTHON3_VERSION_MINOR PYTHON3LIBS_FOUND
PYTHON3LIBS_VERSION_STRING PYTHON3_LIBRARIES PYTHON3_LIBRARY
PYTHON3_DEBUG_LIBRARIES PYTHON3_LIBRARY_DEBUG PYTHON3_INCLUDE_PATH
PYTHON3_INCLUDE_DIR PYTHON3_INCLUDE_DIR2 PYTHON3_PACKAGES_PATH)
if(PYTHON_DEFAULT_EXECUTABLE)
set(PYTHON_DEFAULT_AVAILABLE "TRUE")
elseif(PYTHON2INTERP_FOUND) # Use Python 2 as default Python interpreter
set(PYTHON_DEFAULT_AVAILABLE "TRUE")
set(PYTHON_DEFAULT_EXECUTABLE "${PYTHON2_EXECUTABLE}")
elseif(PYTHON3INTERP_FOUND) # Use Python 2 as fallback Python interpreter (if there is no Python 2)
set(PYTHON_DEFAULT_AVAILABLE "TRUE")
set(PYTHON_DEFAULT_EXECUTABLE "${PYTHON3_EXECUTABLE}")
endif()