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When cross compiling, the architecture of the runtime python interpreter does not match the host architecture. Therefore, don't try to detect it and set it to the min. supported python version instead.
208 lines
8.1 KiB
CMake
208 lines
8.1 KiB
CMake
#
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# Copyright 2010-2011 Ettus Research LLC
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# Copyright 2018 Ettus Research, a National Instruments Company
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# Copyright 2019 Ettus Research, a National Instruments Company
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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#
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if (POLICY CMP0094)
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# See https://cmake.org/cmake/help/v3.15/policy/CMP0094.html
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# set Python3_FIND_STRATEGY to LOCATION - this ensures that Python from
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# sysroot is used first when cross-compiling
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# note: policy CMP0094 is available starting with CMake 3.15
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cmake_policy(SET CMP0094 NEW)
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endif()
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if(NOT DEFINED INCLUDED_UHD_PYTHON_CMAKE)
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set(INCLUDED_UHD_PYTHON_CMAKE TRUE)
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########################################################################
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# Setup Python Part 1: Find the interpreters
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########################################################################
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message(STATUS "")
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message(STATUS "Configuring the Python interpreter...")
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#this allows the user to override PYTHON_EXECUTABLE
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if(PYTHON_EXECUTABLE)
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set(PYTHONINTERP_FOUND TRUE)
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endif(PYTHON_EXECUTABLE)
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if(NOT PYTHONINTERP_FOUND)
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find_package(Python3 ${PYTHON_MIN_VERSION} QUIET)
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if(Python3_Interpreter_FOUND)
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set(PYTHON_VERSION ${Python3_VERSION})
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set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
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set(PYTHONINTERP_FOUND TRUE)
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endif(Python3_Interpreter_FOUND)
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endif(NOT PYTHONINTERP_FOUND)
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if(NOT PYTHONINTERP_FOUND)
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find_package(PythonInterp ${PYTHON_MIN_VERSION} QUIET)
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if(PYTHONINTERP_FOUND)
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set(PYTHON_VERSION ${PYTHON_VERSION_STRING})
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endif(PYTHONINTERP_FOUND)
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endif(NOT PYTHONINTERP_FOUND)
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# If that fails, try using the build-in find program routine.
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if(NOT PYTHONINTERP_FOUND)
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message(STATUS "Attempting to find Python without CMake...")
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find_program(PYTHON_EXECUTABLE NAMES python3 python3.5 python3.6 python3.7 python3.8)
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if(PYTHON_EXECUTABLE)
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set(PYTHONINTERP_FOUND TRUE)
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endif(PYTHON_EXECUTABLE)
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endif(NOT PYTHONINTERP_FOUND)
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if(NOT PYTHON_VERSION)
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message(STATUS "Manually determining build Python version...")
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execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "
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import sys
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print('{}.{}.{}'.format(
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sys.version_info.major,
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sys.version_info.minor,
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sys.version_info.micro))"
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OUTPUT_VARIABLE PYTHON_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif(NOT PYTHON_VERSION)
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# If we still haven't found a Python interpreter, then we're done.
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if(NOT PYTHONINTERP_FOUND)
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message(FATAL_ERROR "Error: Python interpreter required by the build system.")
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endif(NOT PYTHONINTERP_FOUND)
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if(NOT PYTHON_EXECUTABLE)
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message(FATAL_ERROR "Error: Python interpreter required by the build system.")
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endif(NOT PYTHON_EXECUTABLE)
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#make the path to the executable appear in the cmake gui
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set(PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE} CACHE FILEPATH
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"python buildtime interpreter")
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message(STATUS "Python interpreter: ${PYTHON_EXECUTABLE} Version: ${PYTHON_VERSION}")
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message(STATUS "Override with: -DPYTHON_EXECUTABLE=<path-to-python>")
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#this allows the user to override RUNTIME_PYTHON_EXECUTABLE
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if(NOT RUNTIME_PYTHON_EXECUTABLE)
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if(CMAKE_CROSSCOMPILING)
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message(STATUS "Cross compiling, setting python runtime to /usr/bin/python3")
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message(STATUS "and interpreter to min. required version ${PYTHON_MIN_VERSION}")
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message(STATUS "If this is not what you want, please set RUNTIME_PYTHON_EXECUTABLE")
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message(STATUS "and RUNTIME_PYTHON_VERSION manually")
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set(RUNTIME_PYTHON_EXECUTABLE "/usr/bin/python3")
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set(RUNTIME_PYTHON_VERSION ${PYTHON_MIN_VERSION})
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set(EXACT_ARGUMENT "")
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else(CMAKE_CROSSCOMPILING)
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#default to the buildtime interpreter
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set(RUNTIME_PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE})
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set(RUNTIME_PYTHON_VERSION ${PYTHON_VERSION})
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set(EXACT_ARGUMENT "EXACT")
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endif(CMAKE_CROSSCOMPILING)
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else(NOT RUNTIME_PYTHON_EXECUTABLE)
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set(EXACT_ARGUMENT "EXACT")
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endif(NOT RUNTIME_PYTHON_EXECUTABLE)
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if(NOT RUNTIME_PYTHON_VERSION)
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message(STATUS "Manually determining runtime Python version...")
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execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "
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from __future__ import print_function
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import sys
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print('{}.{}.{}'.format(
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sys.version_info.major,
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sys.version_info.minor,
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sys.version_info.micro))"
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OUTPUT_VARIABLE RUNTIME_PYTHON_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif(NOT RUNTIME_PYTHON_VERSION)
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#make the path to the executable appear in the cmake gui
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set(RUNTIME_PYTHON_EXECUTABLE ${RUNTIME_PYTHON_EXECUTABLE} CACHE FILEPATH
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"python runtime interpreter")
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message(STATUS "Python runtime interpreter: ${RUNTIME_PYTHON_EXECUTABLE} Version: ${RUNTIME_PYTHON_VERSION}")
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message(STATUS "Override with: -DRUNTIME_PYTHON_EXECUTABLE=<path-to-python>")
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macro(PYTHON_CHECK_MODULE desc mod cmd have)
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message(STATUS "")
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message(STATUS "Python checking for ${desc}")
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execute_process(
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COMMAND ${PYTHON_EXECUTABLE} -c "
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#########################################
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from distutils.version import LooseVersion
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try: import ${mod}
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except: exit(1)
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try: assert ${cmd}
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except: exit(2)
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exit(0)
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#########################################"
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RESULT_VARIABLE ${have}
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)
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if(${have} EQUAL 0)
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message(STATUS "Python checking for ${desc} - found")
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set(${have} TRUE)
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elseif(${have} EQUAL 1)
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message(STATUS "Python checking for ${desc} - \"import ${mod}\" failed")
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set(${have} FALSE)
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elseif(${have} EQUAL 2)
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message(STATUS "Python checking for ${desc} - \"assert ${cmd}\" failed")
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set(${have} FALSE)
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else()
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message(STATUS "Python checking for ${desc} - unknown error")
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set(${have} FALSE)
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endif()
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endmacro(PYTHON_CHECK_MODULE)
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###############################################################################
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# Part 2: Python Libraries
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###############################################################################
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# The libraries must match the RUNTIME_PYTHON_EXECUTABLE's version.
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# - Figure out version
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# - See if Python3_LIBRARIES is already set (or Python2_LIBRARIES)
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if(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_DIRS)
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message(STATUS "Finding Python Libraries...")
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find_package(PythonLibs ${RUNTIME_PYTHON_VERSION} ${EXACT_ARGUMENT} QUIET)
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if(NOT RUNTIME_PYTHON_VERSION VERSION_LESS 3)
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if(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_DIRS)
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find_package(Python3 ${RUNTIME_PYTHON_VERSION}
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${EXACT_ARGUMENT}
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QUIET
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COMPONENTS Interpreter Development)
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if(Python3_Development_FOUND)
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set(PYTHON_LIBRARIES ${Python3_LIBRARIES})
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set(PYTHON_INCLUDE_DIRS ${Python3_INCLUDE_DIRS})
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endif(Python3_Development_FOUND)
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endif(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_DIRS)
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else(NOT RUNTIME_PYTHON_VERSION VERSION_LESS 3)
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if(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_DIRS)
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find_package(Python2 ${RUNTIME_PYTHON_VERSION}
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${EXACT_ARGUMENT}
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QUIET
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COMPONENTS Interpreter Development)
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if(Python2_Development_FOUND)
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set(PYTHON_LIBRARIES ${Python2_LIBRARIES})
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set(PYTHON_INCLUDE_DIRS ${Python2_INCLUDE_DIRS})
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endif(Python2_Development_FOUND)
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endif(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_DIRS)
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endif(NOT RUNTIME_PYTHON_VERSION VERSION_LESS 3)
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if(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_DIRS)
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message(STATUS "Could not find Python Libraries.")
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endif(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_DIRS)
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endif(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_DIRS)
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if(PYTHON_LIBRARIES AND PYTHON_INCLUDE_DIRS)
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set(HAVE_PYTHON_LIBS TRUE)
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message(STATUS "Python Libraries: ${PYTHON_LIBRARIES}")
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message(STATUS "Python include directories: ${PYTHON_INCLUDE_DIRS}")
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else(PYTHON_LIBRARIES AND PYTHON_INCLUDE_DIRS)
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set(HAVE_PYTHON_LIBS FALSE)
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endif(PYTHON_LIBRARIES AND PYTHON_INCLUDE_DIRS)
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if(NOT PYTHON_LIBRARY)
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set(PYTHON_LIBRARIES ${PYTHON_LIBRARIES} CACHE FILEPATH
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"Python libraries")
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mark_as_advanced(PYTHON_LIBRARIES)
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endif(NOT PYTHON_LIBRARY)
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if(NOT PYTHON_INCLUDE_DIR)
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set(PYTHON_INCLUDE_DIRS ${PYTHON_INCLUDE_DIRS} CACHE FILEPATH
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"Python include dirs")
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mark_as_advanced(PYTHON_INCLUDE_DIRS)
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endif(NOT PYTHON_INCLUDE_DIR)
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endif(NOT DEFINED INCLUDED_UHD_PYTHON_CMAKE)
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