opencv/cmake/OpenCVDetectPython.cmake
2012-05-18 12:59:40 +00:00

112 lines
5.1 KiB
CMake

if(MSVC 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 ${Python_ADDITIONAL_VERSIONS} 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0)
find_host_program(PYTHON_EXECUTABLE
NAMES python${_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 2.0)
unset(PYTHON_USE_NUMPY CACHE)
unset(HAVE_SPHINX CACHE)
if(PYTHON_EXECUTABLE)
if(PYTHON_VERSION_STRING)
set(PYTHON_VERSION_MAJOR_MINOR "${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}")
string(REGEX MATCH "[0-9]+.[0-9]+.[0-9]+" PYTHON_VERSION_FULL "${PYTHON_VERSION_STRING}")
else()
execute_process(COMMAND ${PYTHON_EXECUTABLE} --version
ERROR_VARIABLE PYTHON_VERSION_FULL
ERROR_STRIP_TRAILING_WHITESPACE)
string(REGEX MATCH "[0-9]+.[0-9]+" PYTHON_VERSION_MAJOR_MINOR "${PYTHON_VERSION_FULL}")
string(REGEX MATCH "[0-9]+.[0-9]+.[0-9]+" PYTHON_VERSION_FULL "${PYTHON_VERSION_FULL}")
endif()
if(NOT ANDROID AND NOT IOS)
find_host_package(PythonLibs ${PYTHON_VERSION_FULL})
# cmake 2.4 (at least on Ubuntu 8.04 (hardy)) don't define PYTHONLIBS_FOUND
if(NOT PYTHONLIBS_FOUND AND PYTHON_INCLUDE_PATH)
set(PYTHONLIBS_FOUND ON)
endif()
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")
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}")
endif()
set(PYTHON_PACKAGES_PATH "${PYTHON_PACKAGES_PATH}" CACHE PATH "Where to install the python packages.")
elseif(CMAKE_HOST_WIN32)
get_filename_component(PYTHON_PATH "${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 "${PYTHON_PATH}" PYTHON_PATH)
endif()
set(PYTHON_PACKAGES_PATH "${PYTHON_PATH}/Lib/site-packages")
endif()
if(NOT PYTHON_NUMPY_INCLUDE_DIR)
# Attempt to discover the NumPy include directory. If this succeeds, then build python API with NumPy
execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "import os; os.environ['DISTUTILS_USE_SDK']='1'; import numpy.distutils; print numpy.distutils.misc_util.get_numpy_include_dirs()[0]"
RESULT_VARIABLE PYTHON_NUMPY_PROCESS
OUTPUT_VARIABLE PYTHON_NUMPY_INCLUDE_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(PYTHON_NUMPY_PROCESS EQUAL 0)
file(TO_CMAKE_PATH "${PYTHON_NUMPY_INCLUDE_DIR}" PYTHON_NUMPY_INCLUDE_DIR)
set(PYTHON_NUMPY_INCLUDE_DIR ${PYTHON_NUMPY_INCLUDE_DIR} CACHE PATH "Path to numpy headers")
endif()
endif()
if(PYTHON_NUMPY_INCLUDE_DIR)
set(PYTHON_USE_NUMPY TRUE)
execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "import numpy; print numpy.version.version"
RESULT_VARIABLE PYTHON_NUMPY_PROCESS
OUTPUT_VARIABLE PYTHON_NUMPY_VERSION
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
endif(NOT ANDROID AND NOT IOS)
if(BUILD_DOCS)
# look for Sphinx
execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "import sphinx; print sphinx.__version__"
RESULT_VARIABLE SPHINX_PROCESS
OUTPUT_VARIABLE SPHINX_VERSION
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(SPHINX_PROCESS EQUAL 0)
find_host_program(SPHINX_BUILD sphinx-build)
if(SPHINX_BUILD)
set(HAVE_SPHINX 1)
message(STATUS "Found Sphinx ${SPHINX_VERSION}: ${SPHINX_BUILD}")
endif()
endif()
endif(BUILD_DOCS)
endif(PYTHON_EXECUTABLE)