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# - Find the NumPy libraries
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# This module finds if NumPy is installed, and sets the following variables
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# indicating where it is.
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#
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# TODO: Update to provide the libraries and paths for linking npymath lib.
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#
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# NUMPY_FOUND - was NumPy found
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# NUMPY_VERSION - the version of NumPy found as a string
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# NUMPY_VERSION_MAJOR - the major version number of NumPy
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# NUMPY_VERSION_MINOR - the minor version number of NumPy
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# NUMPY_VERSION_PATCH - the patch version number of NumPy
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# NUMPY_VERSION_DECIMAL - e.g. version 1.6.1 is 10601
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# NUMPY_INCLUDE_DIRS - path to the NumPy include files
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#============================================================================
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# Copyright 2012 Continuum Analytics, Inc.
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#
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# MIT License
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to permit
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# persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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# OTHER DEALINGS IN THE SOFTWARE.
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#
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#============================================================================
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# Finding NumPy involves calling the Python interpreter
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if(NumPy_FIND_REQUIRED)
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find_package(PythonInterp REQUIRED)
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else()
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find_package(PythonInterp)
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endif()
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if(NOT PYTHONINTERP_FOUND)
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set(NUMPY_FOUND FALSE)
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return()
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endif()
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execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c"
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"import numpy as n; print(n.__version__); print(n.get_include());"
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RESULT_VARIABLE _NUMPY_SEARCH_SUCCESS
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OUTPUT_VARIABLE _NUMPY_VALUES_OUTPUT
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ERROR_VARIABLE _NUMPY_ERROR_VALUE
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(NOT _NUMPY_SEARCH_SUCCESS MATCHES 0)
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if(NumPy_FIND_REQUIRED)
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message(FATAL_ERROR
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"NumPy import failure:\n${_NUMPY_ERROR_VALUE}")
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endif()
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set(NUMPY_FOUND FALSE)
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return()
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endif()
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# Convert the process output into a list
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string(REGEX REPLACE ";" "\\\\;" _NUMPY_VALUES ${_NUMPY_VALUES_OUTPUT})
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string(REGEX REPLACE "\n" ";" _NUMPY_VALUES ${_NUMPY_VALUES})
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# Just in case there is unexpected output from the Python command.
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list(GET _NUMPY_VALUES -2 NUMPY_VERSION)
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list(GET _NUMPY_VALUES -1 NUMPY_INCLUDE_DIRS)
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string(REGEX MATCH "^[0-9]+\\.[0-9]+\\.[0-9]+" _VER_CHECK "${NUMPY_VERSION}")
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if("${_VER_CHECK}" STREQUAL "")
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# The output from Python was unexpected. Raise an error always
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# here, because we found NumPy, but it appears to be corrupted somehow.
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message(FATAL_ERROR
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"Requested version and include path from NumPy, got instead:\n${_NUMPY_VALUES_OUTPUT}\n")
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return()
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endif()
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# Make sure all directory separators are '/'
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string(REGEX REPLACE "\\\\" "/" NUMPY_INCLUDE_DIRS ${NUMPY_INCLUDE_DIRS})
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# Get the major and minor version numbers
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string(REGEX REPLACE "\\." ";" _NUMPY_VERSION_LIST ${NUMPY_VERSION})
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list(GET _NUMPY_VERSION_LIST 0 NUMPY_VERSION_MAJOR)
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list(GET _NUMPY_VERSION_LIST 1 NUMPY_VERSION_MINOR)
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list(GET _NUMPY_VERSION_LIST 2 NUMPY_VERSION_PATCH)
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string(REGEX MATCH "[0-9]*" NUMPY_VERSION_PATCH ${NUMPY_VERSION_PATCH})
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math(EXPR NUMPY_VERSION_DECIMAL
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"(${NUMPY_VERSION_MAJOR} * 10000) + (${NUMPY_VERSION_MINOR} * 100) + ${NUMPY_VERSION_PATCH}")
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find_package_message(NUMPY
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"Found NumPy: version \"${NUMPY_VERSION}\" ${NUMPY_INCLUDE_DIRS}"
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"${NUMPY_INCLUDE_DIRS}${NUMPY_VERSION}")
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set(NUMPY_FOUND TRUE)
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