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gnss-sdr/cmake/Modules/SetupPython.cmake
2016-12-26 12:29:05 +01:00

79 lines
2.7 KiB
CMake

########################################################################
# Setup the python interpreter:
# This allows the user to specify a specific interpreter,
# or finds the interpreter via the built-in cmake module.
########################################################################
#this allows the user to override PYTHON_EXECUTABLE
if(PYTHON_EXECUTABLE)
set(PYTHONINTERP_FOUND TRUE)
#otherwise if not set, try to automatically find it
else(PYTHON_EXECUTABLE)
#use the built-in find script
set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6)
find_package(PythonInterp 2)
#and if that fails use the find program routine
if(NOT PYTHONINTERP_FOUND)
find_program(PYTHON_EXECUTABLE NAMES python python2 python2.7 python3)
if(PYTHON_EXECUTABLE)
set(PYTHONINTERP_FOUND TRUE)
endif(PYTHON_EXECUTABLE)
endif(NOT PYTHONINTERP_FOUND)
endif(PYTHON_EXECUTABLE)
if (CMAKE_CROSSCOMPILING)
set(QA_PYTHON_EXECUTABLE "/usr/bin/python")
else (CMAKE_CROSSCOMPILING)
set(QA_PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE})
endif(CMAKE_CROSSCOMPILING)
#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")
#make sure we can use -B with python (introduced in 2.6)
if(PYTHON_EXECUTABLE)
execute_process(
COMMAND ${PYTHON_EXECUTABLE} -B -c ""
OUTPUT_QUIET ERROR_QUIET
RESULT_VARIABLE PYTHON_HAS_DASH_B_RESULT
)
if(PYTHON_HAS_DASH_B_RESULT EQUAL 0)
set(PYTHON_DASH_B "-B")
endif()
endif(PYTHON_EXECUTABLE)
########################################################################
# 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)
#########################################"
RESULT_VARIABLE ${have}
)
if(${have} EQUAL 0)
message(STATUS "Python checking for ${desc} - found")
set(${have} TRUE)
else(${have} EQUAL 0)
message(STATUS "Python checking for ${desc} - not found")
set(${have} FALSE)
endif(${have} EQUAL 0)
endmacro(GNSSSDR_PYTHON_CHECK_MODULE)