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2988e2ac4a
gnss-sdr/cmake/Modules/SetupPython.cmake
Carles Fernandez f965f4921d
Improve Python detection
2023-10-26 13:23:05 +02:00

197 lines
10 KiB
CMake
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# GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
# This file is part of GNSS-SDR.
#
# SPDX-FileCopyrightText: 2011-2020 C. Fernandez-Prades cfernandez(at)cttc.es
# SPDX-License-Identifier: BSD-3-Clause
########################################################################
# Check for the existence of a python module:
# - desc a string description of the check
# - mod the name of the module to import
# - cmd an additional command to run
# - have the result variable to set
########################################################################
macro(GNSSSDR_PYTHON_CHECK_MODULE desc mod cmd have)
message(STATUS "Python checking for ${desc}")
execute_process(
COMMAND ${PYTHON_EXECUTABLE} -c "
#########################################
try: import ${mod}
except:
try: ${mod}
except: exit(-1)
try: assert ${cmd}
except: exit(-1)
#########################################"
OUTPUT_QUIET ERROR_QUIET
RESULT_VARIABLE ${have}
)
if(${have} EQUAL 0)
message(STATUS "Python checking for ${desc} - found")
set(${have} TRUE)
else()
message(STATUS "Python checking for ${desc} - not found")
set(${have} FALSE)
endif()
endmacro()
########################################################################
# Setup the python interpreter:
# This allows the user to specify a specific interpreter,
# or finds the interpreter via the built-in cmake module.
########################################################################
if(CMAKE_VERSION VERSION_LESS 3.12 OR CMAKE_CROSSCOMPILING)
if(PYTHON_EXECUTABLE)
message(STATUS "User set python executable ${PYTHON_EXECUTABLE}")
string(FIND "${PYTHON_EXECUTABLE}" "python3" IS_PYTHON3)
if(IS_PYTHON3 EQUAL -1)
if(CMAKE_VERSION VERSION_LESS "3.24")
find_package(PythonInterp ${GNSSSDR_PYTHON_MIN_VERSION} REQUIRED)
else()
set(Python_EXECUTABLE ${PYTHON_EXECUTABLE})
find_package(Python2 COMPONENTS Interpreter)
set(PYTHONINTERP_FOUND Python2_Interpreter_FOUND)
set(PYTHON_VERSION_MAJOR "${Python2_VERSION_MAJOR}")
set(PYTHON_VERSION_STRING "${Python2_VERSION_MAJOR}.${Python2_VERSION_MINOR}")
endif()
else()
if(CMAKE_VERSION VERSION_LESS "3.24")
find_package(PythonInterp ${GNSSSDR_PYTHON3_MIN_VERSION} REQUIRED)
else()
set(Python_EXECUTABLE ${PYTHON_EXECUTABLE})
find_package(Python3 COMPONENTS Interpreter)
set(PYTHONINTERP_FOUND Python3_Interpreter_FOUND)
set(PYTHON_VERSION_MAJOR "${Python3_VERSION_MAJOR}")
set(PYTHON_VERSION_STRING "${Python3_VERSION_MAJOR}.${Python3_VERSION_MINOR}")
endif()
endif()
gnsssdr_python_check_module("python >= ${GNSSSDR_PYTHON_MIN_VERSION}" sys "sys.version.split()[0] >= '${GNSSSDR_PYTHON_MIN_VERSION}'" PYTHON_MIN_VER_FOUND)
gnsssdr_python_check_module("mako >= ${GNSSSDR_MAKO_MIN_VERSION}" mako "mako.__version__ >= '${GNSSSDR_MAKO_MIN_VERSION}'" MAKO_FOUND)
if(IS_PYTHON3 EQUAL -1)
gnsssdr_python_check_module("six - python 2 and 3 compatibility library" six "True" SIX_FOUND)
endif()
else()
message(STATUS "PYTHON_EXECUTABLE not set - trying by default python3")
if(CMAKE_VERSION VERSION_LESS "3.24")
set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11)
find_package(PythonInterp ${VOLK_PYTHON_MIN_VERSION})
else()
find_package(Python COMPONENTS Interpreter)
set(PYTHONINTERP_FOUND Python_Interpreter_FOUND)
set(PYTHON_EXECUTABLE "${Python_EXECUTABLE}")
set(PYTHON_VERSION_MAJOR "${Python_VERSION_MAJOR}")
set(PYTHON_VERSION_STRING "${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}")
endif()
if(NOT PYTHONINTERP_FOUND)
message(STATUS "python3 not found - trying with python2.7")
if(CMAKE_VERSION VERSION_LESS "3.24")
set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11)
find_package(PythonInterp ${VOLK_PYTHON_MIN_VERSION})
else()
find_package(Python2 COMPONENTS Interpreter)
set(PYTHONINTERP_FOUND Python2_Interpreter_FOUND)
set(PYTHON_EXECUTABLE "${Python2_EXECUTABLE}")
set(PYTHON_VERSION_MAJOR "${Python2_VERSION_MAJOR}")
set(PYTHON_VERSION_STRING "${Python2_VERSION_MAJOR}.${Python2_VERSION_MINOR}")
endif()
endif()
gnsssdr_python_check_module("python >= ${GNSSSDR_PYTHON_MIN_VERSION}" sys "sys.version.split()[0] >= '${GNSSSDR_PYTHON_MIN_VERSION}'" PYTHON_MIN_VER_FOUND)
gnsssdr_python_check_module("mako >= ${GNSSSDR_MAKO_MIN_VERSION}" mako "mako.__version__ >= '${GNSSSDR_MAKO_MIN_VERSION}'" MAKO_FOUND)
if(PYTHON_VERSION_STRING VERSION_LESS "3.0")
gnsssdr_python_check_module("six - python 2 and 3 compatibility library" six "True" SIX_FOUND)
endif()
endif()
else()
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
set(_previous ${CMAKE_FIND_FRAMEWORK})
set(CMAKE_FIND_FRAMEWORK LAST)
endif()
if(PYTHON_EXECUTABLE)
set(Python_EXECUTABLE ${PYTHON_EXECUTABLE})
endif()
find_package(Python3 COMPONENTS Interpreter)
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
set(CMAKE_FIND_FRAMEWORK ${_previous})
endif()
if(Python3_FOUND)
set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
set(PYTHON_VERSION_MAJOR "${Python3_VERSION_MAJOR}")
set(PYTHON_VERSION_STRING "${Python3_VERSION_MAJOR}.${Python3_VERSION_MINOR}")
gnsssdr_python_check_module("python >= ${GNSSSDR_PYTHON_MIN_VERSION}" sys "sys.version.split()[0] >= '${GNSSSDR_PYTHON_MIN_VERSION}'" PYTHON_MIN_VER_FOUND)
gnsssdr_python_check_module("mako >= ${GNSSSDR_MAKO_MIN_VERSION}" mako "mako.__version__ >= '${GNSSSDR_MAKO_MIN_VERSION}'" MAKO_FOUND)
endif()
if(NOT Python3_FOUND OR NOT MAKO_FOUND)
find_package(Python2 COMPONENTS Interpreter)
if(Python2_FOUND)
set(PYTHON_EXECUTABLE ${Python2_EXECUTABLE})
set(PYTHON_VERSION_MAJOR ${Python2_VERSION_MAJOR})
set(PYTHON_VERSION_STRING "${Python2_VERSION_MAJOR}.${Python2_VERSION_MINOR}")
gnsssdr_python_check_module("python >= ${GNSSSDR_PYTHON_MIN_VERSION}" sys "sys.version.split()[0] >= '${GNSSSDR_PYTHON_MIN_VERSION}'" PYTHON_MIN_VER_FOUND)
gnsssdr_python_check_module("mako >= ${GNSSSDR_MAKO_MIN_VERSION}" mako "mako.__version__ >= '${GNSSSDR_MAKO_MIN_VERSION}'" MAKO_FOUND)
gnsssdr_python_check_module("six - python 2 and 3 compatibility library" six "True" SIX_FOUND)
endif()
if(NOT MAKO_FOUND OR NOT SIX_FOUND)
unset(PYTHON_EXECUTABLE)
if(CMAKE_VERSION VERSION_LESS "3.24")
find_package(PythonInterp ${VOLK_PYTHON_MIN_VERSION})
else()
find_package(Python COMPONENTS Interpreter)
set(PYTHONINTERP_FOUND Python_Interpreter_FOUND)
set(PYTHON_EXECUTABLE "${Python_EXECUTABLE}")
set(PYTHON_VERSION_STRING "${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}")
set(PYTHON_VERSION_MAJOR "${Python_VERSION_MAJOR}")
endif()
gnsssdr_python_check_module("python >= ${GNSSSDR_PYTHON_MIN_VERSION}" sys "sys.version.split()[0] >= '${GNSSSDR_PYTHON_MIN_VERSION}'" PYTHON_MIN_VER_FOUND)
gnsssdr_python_check_module("mako >= ${GNSSSDR_MAKO_MIN_VERSION}" mako "mako.__version__ >= '${GNSSSDR_MAKO_MIN_VERSION}'" MAKO_FOUND)
if(NOT MAKO_FOUND)
unset(PYTHON_EXECUTABLE)
unset(PYTHON_VERSION_STRING)
unset(PYTHON_VERSION_MAJOR)
find_program(PYTHON_EXECUTABLE NAMES python3 python)
if(PYTHON_EXECUTABLE)
set(PYTHONINTERP_FOUND TRUE)
execute_process(COMMAND ${PYTHON_EXECUTABLE} --version OUTPUT_VARIABLE PYTHON_VERSION_STRING_AUX)
string(FIND "${PYTHON_VERSION_STRING_AUX}" " " blank_char_index)
if(blank_char_index GREATER -1)
math(EXPR start_index "${blank_char_index} + 1")
string(SUBSTRING "${PYTHON_VERSION_STRING_AUX}" ${start_index} -1 PYTHON_VERSION_STRING)
string(STRIP ${PYTHON_VERSION_STRING} PYTHON_VERSION_STRING)
string(SUBSTRING "${PYTHON_VERSION_STRING_AUX}" ${start_index} 1 PYTHON_VERSION_MAJOR)
message(STATUS "Found Python: ${PYTHON_EXECUTABLE} (found version: ${PYTHON_VERSION_STRING})")
else()
string(FIND ${PYTHON_EXECUTABLE} "python3" is_python3)
if(is_python3 GREATER -1)
set(PYTHON_VERSION_MAJOR "3")
set(PYTHON_VERSION_STRING "3.10") # ?
else()
set(PYTHON_VERSION_MAJOR "2")
set(PYTHON_VERSION_STRING "2.7")
endif()
endif()
endif()
gnsssdr_python_check_module("mako >= 0.4.2" mako "mako.__version__ >= '0.4.2'" MAKO_FOUND)
endif()
if(MAKO_FOUND AND PYTHON_VERSION_STRING VERSION_LESS "3.0")
gnsssdr_python_check_module("six - python 2 and 3 compatibility library" six "True" SIX_FOUND)
endif()
endif()
endif()
endif()
if("${PYTHON_VERSION_MAJOR}" VERSION_EQUAL 3)
set(PYTHON3 TRUE)
endif()
if(CMAKE_CROSSCOMPILING)
set(QA_PYTHON_EXECUTABLE "/usr/bin/python")
else()
set(QA_PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE})
endif()
# make the path to the executable appear in the cmake gui
set(PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE} CACHE FILEPATH "python interpreter")
set(QA_PYTHON_EXECUTABLE ${QA_PYTHON_EXECUTABLE} CACHE FILEPATH "python interpreter for QA tests")
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