cmake/modules/FindNumPy.cmake

0001 #
0002 # http://numexpr.googlecode.com/hg/FindNumPy.cmake
0003 #
0004 # - Find the NumPy libraries
0005 # This module finds if NumPy is installed, and sets the following variables
0006 # indicating where it is.
0007 #
0008 # TODO: Update to provide the libraries and paths for linking npymath lib.
0009 #
0010 #  NUMPY_FOUND               - was NumPy found
0011 #  NUMPY_VERSION             - the version of NumPy found as a string
0012 #  NUMPY_VERSION_MAJOR       - the major version number of NumPy
0013 #  NUMPY_VERSION_MINOR       - the minor version number of NumPy
0014 #  NUMPY_VERSION_PATCH       - the patch version number of NumPy
0015 #  NUMPY_VERSION_DECIMAL     - e.g. version 1.6.1 is 10601
0016 #  NUMPY_INCLUDE_DIRS        - path to the NumPy include files
0017
0018 #============================================================================
0019 # Copyright 2012 Continuum Analytics, Inc.
0020 #
0021 # MIT License
0022 #
0023 # Permission is hereby granted, free of charge, to any person obtaining
0024 # a copy of this software and associated documentation files
0025 # (the "Software"), to deal in the Software without restriction, including
0026 # without limitation the rights to use, copy, modify, merge, publish,
0027 # distribute, sublicense, and/or sell copies of the Software, and to permit
0028 # persons to whom the Software is furnished to do so, subject to
0029 # the following conditions:
0030 #
0031 # The above copyright notice and this permission notice shall be included
0032 # in all copies or substantial portions of the Software.
0033 #
0034 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
0035 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0036 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
0037 # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
0038 # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0039 # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0040 # OTHER DEALINGS IN THE SOFTWARE.
0041 #
0042 #============================================================================
0043
0044 # Finding NumPy involves calling the Python interpreter
0045 if(NumPy_FIND_REQUIRED)
0046     find_package(PythonInterp REQUIRED)
0047 else()
0048     find_package(PythonInterp)
0049 endif()
0050
0051 if(PYTHONINTERP_FOUND)
0052     execute_process(COMMAND "${PYTHON_EXECUTABLE}" "-c"
0053         "import numpy as n; print(n.__version__); print(n.get_include());"
0054         RESULT_VARIABLE _NUMPY_SEARCH_SUCCESS
0055         OUTPUT_VARIABLE _NUMPY_VALUES
0056         ERROR_VARIABLE _NUMPY_ERROR_VALUE
0057         OUTPUT_STRIP_TRAILING_WHITESPACE)
0058
0059     if(_NUMPY_SEARCH_SUCCESS MATCHES 0)
0060         set(NUMPY_FOUND TRUE)
0061
0062         # Convert the process output into a list
0063         string(REGEX REPLACE ";" "\\\\;" _NUMPY_VALUES ${_NUMPY_VALUES})
0064         string(REGEX REPLACE "\n" ";" _NUMPY_VALUES ${_NUMPY_VALUES})
0065         list(GET _NUMPY_VALUES 0 NUMPY_VERSION)
0066         list(GET _NUMPY_VALUES 1 NUMPY_INCLUDE_DIRS)
0067
0068         # Make sure all directory separators are '/'
0069         string(REGEX REPLACE "\\\\" "/" NUMPY_INCLUDE_DIRS ${NUMPY_INCLUDE_DIRS})
0070
0071         # Get the major and minor version numbers
0072         string(REGEX REPLACE "\\." ";" _NUMPY_VERSION_LIST ${NUMPY_VERSION})
0073         list(GET _NUMPY_VERSION_LIST 0 NUMPY_VERSION_MAJOR)
0074         list(GET _NUMPY_VERSION_LIST 1 NUMPY_VERSION_MINOR)
0075         list(GET _NUMPY_VERSION_LIST 2 NUMPY_VERSION_PATCH)
0076         math(EXPR NUMPY_VERSION_DECIMAL
0077             "(${NUMPY_VERSION_MAJOR} * 10000) + (${NUMPY_VERSION_MINOR} * 100) + ${NUMPY_VERSION_PATCH}")
0078
0079         find_package_message(NUMPY
0080             "Found NumPy: version \"${NUMPY_VERSION}\" ${NUMPY_INCLUDE_DIRS}"
0081             "${NUMPY_INCLUDE_DIRS}${NUMPY_VERSION}")
0082     else()
0083         if(NumPy_FIND_REQUIRED)
0084             message(FATAL_ERROR
0085                 "NumPy import failure:\n${_NUMPY_ERROR_VALUE}")
0086         endif()
0087         set(NUMPY_FOUND FALSE)
0088     endif()
0089 else()
0090     set(NUMPY_FOUND FALSE)
0091 endif()