forked from osmocom/wireshark
54 lines
2.0 KiB
CMake
54 lines
2.0 KiB
CMake
#LOCATE_PYTHON_MODULE(<module> [PATHS <path1> ... <pathN>] [REQUIRED])
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#
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# This function tries to find the given python module.
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# If found the path is provided in <PY_<module> and <<module>_FOUND> is set to TRUE.
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#
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# After PATHS additional paths for python to search can be provided.
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# When REQUIRED is set, the function will abort the cmake execution is the module is not found
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function(LOCATE_PYTHON_MODULE module)
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if(NOT PYTHON_EXECUTABLE)
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find_package(PythonInterp)
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endif()
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# Parse (additional) arguments
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set(options REQUIRED)
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set(multiValueArgs PATHS)
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cmake_parse_arguments(LPM "${options}" "" "${multiValueArgs}" ${ARGN})
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string(TOUPPER ${module} module_upper)
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if(NOT PY_${module_upper})
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if(LPM_PATHS)
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# Append LPM_PATHS to PYTHONPATH to search at provided location (first)
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file(TO_CMAKE_PATH "$ENV{PYTHONPATH}" CMAKE_PATH)
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list(INSERT CMAKE_PATH 0 ${LPM_PATHS})
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file(TO_NATIVE_PATH "${CMAKE_PATH}" NATIVE_PATH)
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if(UNIX)
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string(REPLACE ";" ":" NATIVE_PATH "${NATIVE_PATH}")
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endif(UNIX)
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set(ENV{PYTHONPATH} "${NATIVE_PATH}")
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endif(LPM_PATHS)
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# Use the (native) python impl module to find the location of the requested module
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execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c"
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"import imp; print(imp.find_module('${module}')[1])"
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RESULT_VARIABLE _${module}_status
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OUTPUT_VARIABLE _${module}_location
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ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(NOT _${module}_status)
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set(PY_${module_upper} ${_${module}_location} CACHE STRING
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"Location of Python module ${module}")
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set(${module_upper}_FOUND TRUE)
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message(STATUS "Found python module ${module}: ${PY_${module_upper}}")
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else(NOT _${module}_status)
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set(${module_upper}_FOUND FALSE)
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if(LPM_REQUIRED)
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message(FATAL_ERROR "Could NOT find python module ${module}")
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else(LPM_REQUIRED)
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message(STATUS "Could NOT find python module ${module}")
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endif(LPM_REQUIRED)
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endif(NOT _${module}_status)
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endif(NOT PY_${module_upper})
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endfunction(LOCATE_PYTHON_MODULE)
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