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# - Find Python libraries
# Find the native Python includes and library
#
# Note:, This is not _yet_ intended to be a general python module for other
# projects to use since its hard coded to fixed Python version
# as Blender only supports a single Python version at the moment.
#
# Note:
# this is for Blender/Unix Python only.
#
# This module defines
# PYTHON_VERSION
# PYTHON_INCLUDE_DIRS
# PYTHON_INCLUDE_CONFIG_DIRS
# PYTHON_LIBRARIES
# PYTHON_LIBPATH, Used for installation
# PYTHON_SITE_PACKAGES, Used for installation (as a Python module)
# PYTHON_LINKFLAGS
# PYTHON_ROOT_DIR, The base directory to search for Python.
# This can also be an environment variable.
#
# also defined, but not for general use are
# PYTHON_LIBRARY, where to find the python library.
#=============================================================================
# Copyright 2011 Blender Foundation.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# If PYTHON_ROOT_DIR was defined in the environment, use it.
IF(NOT PYTHON_ROOT_DIR AND NOT $ENV{PYTHON_ROOT_DIR} STREQUAL "")
SET(PYTHON_ROOT_DIR $ENV{PYTHON_ROOT_DIR})
ENDIF()
SET(PYTHON_VERSION 3.6 CACHE STRING "Python Version (major and minor only)")
MARK_AS_ADVANCED(PYTHON_VERSION)
# See: http://docs.python.org/extending/embedding.html#linking-requirements
# for why this is needed
SET(PYTHON_LINKFLAGS "-Xlinker -export-dynamic" CACHE STRING "Linker flags for python")
MARK_AS_ADVANCED(PYTHON_LINKFLAGS)
# if the user passes these defines as args, we dont want to overwrite
SET(_IS_INC_DEF OFF)
SET(_IS_INC_CONF_DEF OFF)
SET(_IS_LIB_DEF OFF)
SET(_IS_LIB_PATH_DEF OFF)
IF(DEFINED PYTHON_INCLUDE_DIR)
SET(_IS_INC_DEF ON)
ENDIF()
IF(DEFINED PYTHON_INCLUDE_CONFIG_DIR)
SET(_IS_INC_CONF_DEF ON)
ENDIF()
IF(DEFINED PYTHON_LIBRARY)
SET(_IS_LIB_DEF ON)
ENDIF()
IF(DEFINED PYTHON_LIBPATH)
SET(_IS_LIB_PATH_DEF ON)
ENDIF()
STRING(REPLACE "." "" _PYTHON_VERSION_NO_DOTS ${PYTHON_VERSION})
SET(_python_SEARCH_DIRS
${PYTHON_ROOT_DIR}
"$ENV{HOME}/py${_PYTHON_VERSION_NO_DOTS}"
"/opt/py${_PYTHON_VERSION_NO_DOTS}"
"/opt/lib/python-${PYTHON_VERSION}"
)
# only search for the dirs if we havn't already
IF((NOT _IS_INC_DEF) OR (NOT _IS_INC_CONF_DEF) OR (NOT _IS_LIB_DEF) OR (NOT _IS_LIB_PATH_DEF))
SET(_PYTHON_ABI_FLAGS_TEST
"m;mu;u; " # release
"dm;dmu;du;d" # debug
)
FOREACH(_CURRENT_ABI_FLAGS ${_PYTHON_ABI_FLAGS_TEST})
#IF(CMAKE_BUILD_TYPE STREQUAL Debug)
# SET(_CURRENT_ABI_FLAGS "d${_CURRENT_ABI_FLAGS}")
#ENDIF()
STRING(REPLACE " " "" _CURRENT_ABI_FLAGS ${_CURRENT_ABI_FLAGS})
IF(NOT DEFINED PYTHON_INCLUDE_DIR)
FIND_PATH(PYTHON_INCLUDE_DIR
NAMES
Python.h
HINTS
${_python_SEARCH_DIRS}
PATH_SUFFIXES
include/python${PYTHON_VERSION}${_CURRENT_ABI_FLAGS}
include/${CMAKE_LIBRARY_ARCHITECTURE}/python${PYTHON_VERSION}${_CURRENT_ABI_FLAGS}
)
ENDIF()
IF(NOT DEFINED PYTHON_INCLUDE_CONFIG_DIR)
FIND_PATH(PYTHON_INCLUDE_CONFIG_DIR
NAMES
pyconfig.h
HINTS
${_python_SEARCH_DIRS}
PATH_SUFFIXES
include/python${PYTHON_VERSION}${_CURRENT_ABI_FLAGS}
include/${CMAKE_LIBRARY_ARCHITECTURE}/python${PYTHON_VERSION}${_CURRENT_ABI_FLAGS}
)
IF((NOT PYTHON_INCLUDE_CONFIG_DIR) AND PYTHON_INCLUDE_DIR)
# Fallback...
UNSET(PYTHON_INCLUDE_CONFIG_DIR CACHE)
SET(PYTHON_INCLUDE_CONFIG_DIR ${PYTHON_INCLUDE_DIR} CACHE PATH "")
ENDIF()
ENDIF()
IF(NOT DEFINED PYTHON_LIBRARY)
FIND_LIBRARY(PYTHON_LIBRARY
NAMES
"python${PYTHON_VERSION}${_CURRENT_ABI_FLAGS}"
HINTS
${_python_SEARCH_DIRS}
PATH_SUFFIXES
lib64 lib
)
ENDIF()
IF(NOT DEFINED PYTHON_LIBPATH)
FIND_PATH(PYTHON_LIBPATH
NAMES
"python${PYTHON_VERSION}/abc.py" # This is a bit hackish! :/
HINTS
${_python_SEARCH_DIRS}
PATH_SUFFIXES
lib64 lib
)
IF((NOT PYTHON_LIBPATH) AND PYTHON_LIBRARY)
# Fallback...
UNSET(PYTHON_LIBPATH CACHE)
GET_FILENAME_COMPONENT(PYTHON_LIBPATH ${PYTHON_LIBRARY} PATH)
ENDIF()
ENDIF()
IF(PYTHON_LIBRARY AND PYTHON_LIBPATH AND PYTHON_INCLUDE_DIR AND PYTHON_INCLUDE_CONFIG_DIR)
SET(_PYTHON_ABI_FLAGS "${_CURRENT_ABI_FLAGS}")
break()
ELSE()
# ensure we dont find values from 2 different ABI versions
IF(NOT _IS_INC_DEF)
UNSET(PYTHON_INCLUDE_DIR CACHE)
ENDIF()
IF(NOT _IS_INC_CONF_DEF)
UNSET(PYTHON_INCLUDE_CONFIG_DIR CACHE)
ENDIF()
IF(NOT _IS_LIB_DEF)
UNSET(PYTHON_LIBRARY CACHE)
ENDIF()
IF(NOT _IS_LIB_PATH_DEF)
UNSET(PYTHON_LIBPATH CACHE)
ENDIF()
ENDIF()
ENDFOREACH()
UNSET(_CURRENT_ABI_FLAGS)
UNSET(_CURRENT_PATH)
UNSET(_PYTHON_ABI_FLAGS_TEST)
ENDIF()
UNSET(_IS_INC_DEF)
UNSET(_IS_INC_CONF_DEF)
UNSET(_IS_LIB_DEF)
UNSET(_IS_LIB_PATH_DEF)
# handle the QUIETLY and REQUIRED arguments and SET PYTHONLIBSUNIX_FOUND to TRUE IF
# all listed variables are TRUE
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(PythonLibsUnix DEFAULT_MSG
PYTHON_LIBRARY PYTHON_LIBPATH PYTHON_INCLUDE_DIR PYTHON_INCLUDE_CONFIG_DIR)
IF(PYTHONLIBSUNIX_FOUND)
# Assign cache items
SET(PYTHON_INCLUDE_DIRS ${PYTHON_INCLUDE_DIR} ${PYTHON_INCLUDE_CONFIG_DIR})
SET(PYTHON_LIBRARIES ${PYTHON_LIBRARY})
FIND_FILE(PYTHON_SITE_PACKAGES
NAMES
# debian specific
dist-packages
site-packages
HINTS
${PYTHON_LIBPATH}/python${PYTHON_VERSION}
)
# we need this for installation
# XXX No more valid with debian-like py3.5 packages...
# GET_FILENAME_COMPONENT(PYTHON_LIBPATH ${PYTHON_LIBRARY} PATH)
# not required for build, just used when bundling Python.
FIND_PROGRAM(
PYTHON_EXECUTABLE
NAMES
"python${PYTHON_VERSION}${_PYTHON_ABI_FLAGS}"
"python${PYTHON_VERSION}"
"python"
HINTS
${_python_SEARCH_DIRS}
PATH_SUFFIXES bin
)
ENDIF()
UNSET(_PYTHON_VERSION_NO_DOTS)
UNSET(_PYTHON_ABI_FLAGS)
UNSET(_python_SEARCH_DIRS)
MARK_AS_ADVANCED(
PYTHON_INCLUDE_DIR
PYTHON_INCLUDE_CONFIG_DIR
PYTHON_LIBRARY
PYTHON_LIBPATH
PYTHON_SITE_PACKAGES
PYTHON_EXECUTABLE
)
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