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gnss-sdr/cmake/Modules/SetupPython.cmake

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2018-12-12 00:37:37 +00:00
# Copyright (C) 2011-2018 (see AUTHORS file for a list of contributors)
#
# This file is part of GNSS-SDR.
#
# GNSS-SDR is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GNSS-SDR is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
########################################################################
# 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_RAW desc python_code have)
execute_process(
COMMAND ${PYTHON_EXECUTABLE} -c "${python_code}"
OUTPUT_QUIET ERROR_QUIET
RESULT_VARIABLE return_code
)
if(return_code 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()
macro(GNSSSDR_PYTHON_CHECK_MODULE desc mod cmd have)
gnsssdr_python_check_module_raw(
"${desc}" "
#########################################
try:
import ${mod}
assert ${cmd}
except (ImportError, AssertionError): exit(-1)
except: pass
#########################################"
"${have}")
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)
if(PYTHON_EXECUTABLE)
message(STATUS "User set python executable ${PYTHON_EXECUTABLE}")
string(FIND "${PYTHON_EXECUTABLE}" "python3" IS_PYTHON3)
if(IS_PYTHON3 EQUAL -1)
find_package(PythonInterp ${GNSSSDR_PYTHON_MIN_VERSION} REQUIRED)
else()
find_package(PythonInterp ${GNSSSDR_PYTHON3_MIN_VERSION} REQUIRED)
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)
gnsssdr_python_check_module("six - python 2 and 3 compatibility library" six "True" SIX_FOUND)
else()
message(STATUS "PYTHON_EXECUTABLE not set - trying by default python2")
message(STATUS "Use -DPYTHON_EXECUTABLE=/path/to/python3 to build for python3.")
find_package(PythonInterp ${GNSSSDR_PYTHON_MIN_VERSION})
if(NOT PYTHONINTERP_FOUND)
message(STATUS "python2 not found - trying with python3")
find_package(PythonInterp ${GNSSSDR_PYTHON3_MIN_VERSION} REQUIRED)
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)
gnsssdr_python_check_module("six - python 2 and 3 compatibility library" six "True" SIX_FOUND)
endif()
find_package(PythonLibs ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR} EXACT)
else()
find_package(Python3 COMPONENTS Interpreter)
if(Python3_FOUND)
set(PYTHON_EXECUTABLE ${Python3_EXECUTABLE})
set(PYTHON_VERSION_MAJOR ${Python3_VERSION_MAJOR})
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 Python3_FOUND OR NOT MAKO_FOUND OR NOT SIX_FOUND)
find_package(Python2 COMPONENTS Interpreter)
if(Python2_FOUND)
set(PYTHON_EXECUTABLE ${Python2_EXECUTABLE})
set(PYTHON_VERSION_MAJOR ${Python2_VERSION_MAJOR})
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()
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")