diff options
Diffstat (limited to 'src/arrow/cpp/cmake_modules/FindPythonLibsNew.cmake')
| -rw-r--r-- | src/arrow/cpp/cmake_modules/FindPythonLibsNew.cmake | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/src/arrow/cpp/cmake_modules/FindPythonLibsNew.cmake b/src/arrow/cpp/cmake_modules/FindPythonLibsNew.cmake new file mode 100644 index 000000000..581bba9d4 --- /dev/null +++ b/src/arrow/cpp/cmake_modules/FindPythonLibsNew.cmake @@ -0,0 +1,267 @@ +# - Find python libraries +# This module finds the libraries corresponding to the Python interpreter +# FindPythonInterp provides. +# This code sets the following variables: +# +# PYTHONLIBS_FOUND - have the Python libs been found +# PYTHON_PREFIX - path to the Python installation +# PYTHON_LIBRARIES - path to the python library +# PYTHON_INCLUDE_DIRS - path to where Python.h is found +# PYTHON_SITE_PACKAGES - path to installation site-packages +# PYTHON_IS_DEBUG - whether the Python interpreter is a debug build +# PYTHON_OTHER_LIBS - third-party libraries (as link flags) needed +# for linking with Python +# +# PYTHON_INCLUDE_PATH - path to where Python.h is found (deprecated) +# +# A function PYTHON_ADD_MODULE(<name> src1 src2 ... srcN) is defined +# to build modules for python. +# +# Thanks to talljimbo for the patch adding the 'LDVERSION' config +# variable usage. + +#============================================================================= +# Copyright 2001-2009 Kitware, Inc. +# Copyright 2012-2014 Continuum Analytics, Inc. +# +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# +# * Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# * Neither the names of Kitware, Inc., the Insight Software Consortium, +# nor the names of their contributors may be used to endorse or promote +# products derived from this software without specific prior written +# permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +#============================================================================= +# (To distribute this file outside of CMake, substitute the full +# License text for the above reference.) + +# Legacy code for CMake < 3.15.0. The primary point of entry should be +# FindPython3Alt.cmake. + +# Use the Python interpreter to find the libs. +if(PythonLibsNew_FIND_REQUIRED) + find_package(PythonInterp REQUIRED) +else() + find_package(PythonInterp) +endif() + +if(NOT PYTHONINTERP_FOUND) + set(PYTHONLIBS_FOUND FALSE) + return() +endif() + +# According to http://stackoverflow.com/questions/646518/python-how-to-detect-debug-interpreter +# testing whether sys has the gettotalrefcount function is a reliable, +# cross-platform way to detect a CPython debug interpreter. +# +# The library suffix is from the config var LDVERSION sometimes, otherwise +# VERSION. VERSION will typically be like "2.7" on unix, and "27" on windows. +# +# The config var LIBPL is for Linux, and helps on Debian Jessie where the +# addition of multi-arch support shuffled things around. +execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c" + "from distutils import sysconfig as s;import sys;import struct; +print('.'.join(str(v) for v in sys.version_info)); +print(sys.prefix); +print(s.get_python_inc(plat_specific=True)); +print(s.get_python_lib(plat_specific=True)); +print(s.get_config_var('SO')); +print(hasattr(sys, 'gettotalrefcount')+0); +print(struct.calcsize('@P')); +print(s.get_config_var('LDVERSION') or s.get_config_var('VERSION')); +print(s.get_config_var('LIBPL')); +print(s.get_config_var('LIBS') or ''); +" + RESULT_VARIABLE _PYTHON_SUCCESS + OUTPUT_VARIABLE _PYTHON_VALUES + ERROR_VARIABLE _PYTHON_ERROR_VALUE) + +if(NOT _PYTHON_SUCCESS MATCHES 0) + if(PythonLibsNew_FIND_REQUIRED) + message(FATAL_ERROR + "Python config failure:\n${_PYTHON_ERROR_VALUE}") + endif() + set(PYTHONLIBS_FOUND FALSE) + return() +endif() + +# Convert the process output into a list +string(REGEX REPLACE ";" "\\\\;" _PYTHON_VALUES ${_PYTHON_VALUES}) +string(REGEX REPLACE "\n" ";" _PYTHON_VALUES ${_PYTHON_VALUES}) +list(GET _PYTHON_VALUES 0 _PYTHON_VERSION_LIST) +list(GET _PYTHON_VALUES 1 PYTHON_PREFIX) +list(GET _PYTHON_VALUES 2 PYTHON_INCLUDE_DIR) +list(GET _PYTHON_VALUES 3 PYTHON_SITE_PACKAGES) +list(GET _PYTHON_VALUES 4 PYTHON_MODULE_EXTENSION) +list(GET _PYTHON_VALUES 5 PYTHON_IS_DEBUG) +list(GET _PYTHON_VALUES 6 PYTHON_SIZEOF_VOID_P) +list(GET _PYTHON_VALUES 7 PYTHON_LIBRARY_SUFFIX) +list(GET _PYTHON_VALUES 8 PYTHON_LIBRARY_PATH) +list(GET _PYTHON_VALUES 9 PYTHON_OTHER_LIBS) + +# Make sure the Python has the same pointer-size as the chosen compiler +# Skip the check on OS X, it doesn't consistently have CMAKE_SIZEOF_VOID_P defined +if((NOT APPLE) AND (NOT "${PYTHON_SIZEOF_VOID_P}" STREQUAL "${CMAKE_SIZEOF_VOID_P}")) + if(PythonLibsNew_FIND_REQUIRED) + math(EXPR _PYTHON_BITS "${PYTHON_SIZEOF_VOID_P} * 8") + math(EXPR _CMAKE_BITS "${CMAKE_SIZEOF_VOID_P} * 8") + message(FATAL_ERROR + "Python config failure: Python is ${_PYTHON_BITS}-bit, " + "chosen compiler is ${_CMAKE_BITS}-bit") + endif() + set(PYTHONLIBS_FOUND FALSE) + return() +endif() + +# The built-in FindPython didn't always give the version numbers +string(REGEX REPLACE "\\." ";" _PYTHON_VERSION_LIST ${_PYTHON_VERSION_LIST}) +list(GET _PYTHON_VERSION_LIST 0 PYTHON_VERSION_MAJOR) +list(GET _PYTHON_VERSION_LIST 1 PYTHON_VERSION_MINOR) +list(GET _PYTHON_VERSION_LIST 2 PYTHON_VERSION_PATCH) + +# Make sure all directory separators are '/' +string(REGEX REPLACE "\\\\" "/" PYTHON_PREFIX ${PYTHON_PREFIX}) +string(REGEX REPLACE "\\\\" "/" PYTHON_INCLUDE_DIR ${PYTHON_INCLUDE_DIR}) +string(REGEX REPLACE "\\\\" "/" PYTHON_SITE_PACKAGES ${PYTHON_SITE_PACKAGES}) + +if(CMAKE_HOST_WIN32) + # Appease CMP0054 + if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") + set(PYTHON_LIBRARY + "${PYTHON_PREFIX}/libs/Python${PYTHON_LIBRARY_SUFFIX}.lib") + else() + find_library(PYTHON_LIBRARY + NAMES "python${PYTHON_LIBRARY_SUFFIX}" + PATHS "${PYTHON_PREFIX}" NO_DEFAULT_PATH + PATH_SUFFIXES "lib" "libs") + endif() +elseif(APPLE) + + set(PYTHON_LIBRARY "${PYTHON_PREFIX}/lib/libpython${PYTHON_LIBRARY_SUFFIX}.dylib") + + if (NOT EXISTS ${PYTHON_LIBRARY}) + # In some cases libpythonX.X.dylib is not part of the PYTHON_PREFIX and we + # need to call `python-config --prefix` to determine the correct location. + find_program(PYTHON_CONFIG python-config + NO_CMAKE_SYSTEM_PATH) + if (PYTHON_CONFIG) + execute_process( + COMMAND "${PYTHON_CONFIG}" "--prefix" + OUTPUT_VARIABLE PYTHON_CONFIG_PREFIX + OUTPUT_STRIP_TRAILING_WHITESPACE) + set(PYTHON_LIBRARY "${PYTHON_CONFIG_PREFIX}/lib/libpython${PYTHON_LIBRARY_SUFFIX}.dylib") + endif() + endif() +else() + if(${PYTHON_SIZEOF_VOID_P} MATCHES 8) + set(_PYTHON_LIBS_SEARCH "${PYTHON_PREFIX}/lib64" "${PYTHON_PREFIX}/lib" "${PYTHON_LIBRARY_PATH}") + else() + set(_PYTHON_LIBS_SEARCH "${PYTHON_PREFIX}/lib" "${PYTHON_LIBRARY_PATH}") + endif() + message(STATUS "Searching for Python libs in ${_PYTHON_LIBS_SEARCH}") + message(STATUS "Looking for python${PYTHON_LIBRARY_SUFFIX}") + # Probably this needs to be more involved. It would be nice if the config + # information the python interpreter itself gave us were more complete. + find_library(PYTHON_LIBRARY + NAMES "python${PYTHON_LIBRARY_SUFFIX}" + PATHS ${_PYTHON_LIBS_SEARCH} + NO_SYSTEM_ENVIRONMENT_PATH + NO_CMAKE_SYSTEM_PATH) + message(STATUS "Found Python lib ${PYTHON_LIBRARY}") +endif() + +# For backward compatibility, set PYTHON_INCLUDE_PATH, but make it internal. +SET(PYTHON_INCLUDE_PATH "${PYTHON_INCLUDE_DIR}" CACHE INTERNAL + "Path to where Python.h is found (deprecated)") + +MARK_AS_ADVANCED( + PYTHON_LIBRARY + PYTHON_INCLUDE_DIR +) + +# We use PYTHON_INCLUDE_DIR, PYTHON_LIBRARY and PYTHON_DEBUG_LIBRARY for the +# cache entries because they are meant to specify the location of a single +# library. We now set the variables listed by the documentation for this +# module. +SET(PYTHON_INCLUDE_DIRS "${PYTHON_INCLUDE_DIR}") +SET(PYTHON_LIBRARIES "${PYTHON_LIBRARY}") +SET(PYTHON_DEBUG_LIBRARIES "${PYTHON_DEBUG_LIBRARY}") + + +# Don't know how to get to this directory, just doing something simple :P +#INCLUDE(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) +#FIND_PACKAGE_HANDLE_STANDARD_ARGS(PythonLibs DEFAULT_MSG PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS) +find_package_message(PYTHON + "Found PythonLibs: ${PYTHON_LIBRARY}" + "${PYTHON_EXECUTABLE}${PYTHON_VERSION}") + + +# PYTHON_ADD_MODULE(<name> src1 src2 ... srcN) is used to build modules for python. +FUNCTION(PYTHON_ADD_MODULE _NAME ) + GET_PROPERTY(_TARGET_SUPPORTS_SHARED_LIBS + GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS) + OPTION(PYTHON_ENABLE_MODULE_${_NAME} "Add module ${_NAME}" TRUE) + OPTION(PYTHON_MODULE_${_NAME}_BUILD_SHARED + "Add module ${_NAME} shared" ${_TARGET_SUPPORTS_SHARED_LIBS}) + + # Mark these options as advanced + MARK_AS_ADVANCED(PYTHON_ENABLE_MODULE_${_NAME} + PYTHON_MODULE_${_NAME}_BUILD_SHARED) + + IF(PYTHON_ENABLE_MODULE_${_NAME}) + IF(PYTHON_MODULE_${_NAME}_BUILD_SHARED) + SET(PY_MODULE_TYPE MODULE) + ELSE(PYTHON_MODULE_${_NAME}_BUILD_SHARED) + SET(PY_MODULE_TYPE STATIC) + SET_PROPERTY(GLOBAL APPEND PROPERTY PY_STATIC_MODULES_LIST ${_NAME}) + ENDIF(PYTHON_MODULE_${_NAME}_BUILD_SHARED) + + SET_PROPERTY(GLOBAL APPEND PROPERTY PY_MODULES_LIST ${_NAME}) + ADD_LIBRARY(${_NAME} ${PY_MODULE_TYPE} ${ARGN}) + IF(APPLE) + # On OS X, linking against the Python libraries causes + # segfaults, so do this dynamic lookup instead. + SET_TARGET_PROPERTIES(${_NAME} PROPERTIES LINK_FLAGS + "-undefined dynamic_lookup") + ELSEIF(MSVC) + target_link_libraries(${_NAME} ${PYTHON_LIBRARIES}) + ELSE() + # In general, we should not link against libpython as we do not embed the + # Python interpreter. The python binary itself can then define where the + # symbols should loaded from. For being manylinux1 compliant, one is not + # allowed to link to libpython. Partly because not all systems ship it, + # also because the interpreter ABI/API was not stable between patch + # releases for Python < 3.5. + SET_TARGET_PROPERTIES(${_NAME} PROPERTIES LINK_FLAGS + "-Wl,-undefined,dynamic_lookup") + ENDIF() + IF(PYTHON_MODULE_${_NAME}_BUILD_SHARED) + SET_TARGET_PROPERTIES(${_NAME} PROPERTIES PREFIX "${PYTHON_MODULE_PREFIX}") + SET_TARGET_PROPERTIES(${_NAME} PROPERTIES SUFFIX "${PYTHON_MODULE_EXTENSION}") + ELSE() + ENDIF() + + ENDIF(PYTHON_ENABLE_MODULE_${_NAME}) +ENDFUNCTION(PYTHON_ADD_MODULE) |